Tag Archives: Mexico

Tropical Storm Pilar Forms Near Mexico

Tropical Storm Pilar formed just west of Mexico on Saturday.  At 11:00 p.m. EDT on Saturday the center of Tropical Storm Pilar was located at latitude 18.7°N and longitude 105.3°W which put it about 120 miles (195 km) south-southeast of Cabo Corrientes, Mexico.  Pilar was moving toward the north at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1003 mb.

A Tropical Storm Warning was issued for the portion of the coast from Manzanillo to El Roblito including the Islas Marias.

A distinct center of circulation developed within a larger area of low pressure near the west coast of Mexico on Saturday and the system was classified as Tropical Storm Pilar.  Several bands of showers and thunderstorms began to form around the center.  Storms near the center started to generate upper level divergence which was pumping mass away to the west of Tropical Storm Pilar.

Tropical Storm Pilar will move through an environment that will be somewhat favorable for intensification on Sunday.  Pilar will move over water where the Sea Surface Temperature is near 29°C.   An upper level high over Mexico is producing easterly winds which are blowing toward the top of the circulation.  Those winds are producing some vertical wind shear, but the shear was not strong enough to prevent the formation of Tropical Storm Pilar.  The eastern part of the circulation will be moving over western Mexico and increased friction will be the primary factor inhibiting strengthening.  Tropical Storm Pilar is likely to intensify on Sunday.

A ridge in the middle levels of the atmosphere over Mexico is steering Tropical Storm Pilar slowly toward the north.  On its anticipated track the center of Tropical Storm Pilar will be very near Cabo Corrientes on Sunday night.  The center could move inland or it could remain just west of the coast.  Tropical Storm Pilar will drop very heavy rain over parts of the states of Colima and Jalisco.  The heavy rain could cause flash flooding in some locations.

Tropical Storm Norma Drifts Near Baja California, Otis Rapidly Intensifies to Cat. 2 Hurricane

Tropical Storm Norma drifted near Baja California on Sunday, while Hurricane Otis rapidly strengthened into a Category 2 hurricane on the Saffir-Simpson Scale.  At 8:00 p.m. EDT on Sunday the center of Tropical Storm Norma was located at latitude 21.3°N and longitude 111.2°W which put it about 140 miles (220 km) south-southwest of Cabo San Lucas, Mexico.  Norma was moving toward the northwest at 6 m.p.h. (9 km/h).  The maximum sustained wind speed was 50 m.p.h. (80 km/h) and there were wind gusts to 65 m.p.h. (105 km/h).  The minimum surface pressure was 1001 mb.

A Tropical Storm Watch was in effect for the portion of the coast from Los Barriles to Todos Santos, Mexico.

Tropical Storm Norma retains some of the structural features that it had when it was a hurricane.  The remnants of a large circular eye form the center of circulation.  A broken ring of strong thunderstorms surrounds the remnants of the eye and the strongest winds are occurring in that ring.  Bands of showers and weaker thunderstorms are revolving around the core of Tropical Storm Norma.  Some of the outer rainbands of Norma are already dropping heavy rain over parts of the southern end of Baja California.

Tropical Storm Norma will move through an environment that will be only marginally favorable for intensification during the next day or so.  Norma will move over water where the Sea Surface Temperature is near 28°C.  An upper level trough west of North America is producing southwesterly winds which are blowing toward the top of the circulation.  Those winds are causing moderate vertical wind shear.  The circulation of Norma may also be drawing some cooler more stable air into the western part of the tropical storm.  Tropical Storm Norma could intensify somewhat during the next 24 hours, but it will eventually move over cooler water and weaken.

A ridge in the middle troposphere located east of Norma is steering the tropical storm toward the northwest and that general motion is expected to continue for another day or so.  When Norma weakens, it will be steered by the winds in the lower levels of the atmosphere.  Those winds will push Tropical Storm Norma more toward the west during the middle of the weak.  On its anticipated track the center of Tropical Storm Norma is forecast to remain west of Baja California.

Hurricane Otis intensified very rapidly on Sunday from a weak tropical storm to a Category 2 hurricane on the Saffir-Simpson Scale.  At 5:00 p.m. EDT on Sunday the center of Hurricane Otis was located at latitude 17.0°N and longitude 127.3°W which put it about 1200 miles (1930 km) west-southwest of the southern tip of Baja California.  Otis was moving toward the north at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (200 km/h).  The minimum surface pressure was 973 mb.

Hurricane Otis has a very small circulation, which allowed to strengthen very rapidly when the environment became more favorable.  A small eye formed at the center of Hurricane Otis and a tight ring of very strong thunderstorms surrounded the eye.  Those storms began generating upper level divergence which pumped mass away from the center of circulation.  The pressure decreased quickly and the wind speed increased very rapidly.  Hurricane Otis still has a small circulation.  Winds to tropical storm force only extend out about 70 miles (110 km) from the center.

Hurricane Otis may be near its peak intensity.  Otis is still moving over water where the Sea Surface Temperature is near 27°C, but it will soon move over cooler water.  Hurricane Otis will move nearer to the upper level trough west of North America and the hurricane will encounter stronger vertical wind shear.  Because Otis is a small hurricane, it could weaken almost as fast as it intensified.

A small midlevel ridge east of Otis is steering the hurricane toward the north.  Much like Tropical Storm Norma, Otis will be steered by winds lower in the atmosphere when it weakens.  Those winds are forecast to steer Otis more toward the west-southwest later this week.

Max Rapidly Intensifies Into a Hurricane Near Acapulco

Tropical Storm Max intensified rapidly into a hurricane on Thursday morning.  At 11:00 a.m. EDT on Thursday the center of Hurricane Max was located at latitude 16.3°N and longitude 99.9°W which put it about 40 miles (65 km/h) south of Acapulco, Mexico.  Max was moving toward the east at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 95 m.p.h. (155 km/h).  The minimum surface pressure was 988 mb.

A Hurricane Warning was in effect for the portion of the coast from Zihuatenajo to Punta Maldonado, Mexico.  A Tropical Storm Warning was in effect for the portion of the coast from Punta Maldonado to Laguas de Chacahua, Mexico.

The circulation of Hurriane Max is quite small.  Winds to hurricane force only extend out about 15 miles (25 km) from the center of circulation.  Winds to tropical storm force extend out about 50 miles (80 km) from the center.  Although the circulation of Hurricane Max is small, it is very well organized.  There is a small circular eye at the center of circulation.  The eye is surrounded by a ring of strong thunderstorms and the strongest winds are occurring in that ring of storms.

The center of Hurricane Max is very close to the coast of Mexico.  The outer fringes of the northwestern part of the circulation could already be pulling in some drier air.  Max will make landfall on the coast of Mexico within a few hours and it will start to dissipate as soon as the center make landfall.

The core of Hurricane Max will be capable of causing localized wind damage.  Max will also drop very heavy rain over parts of the states or Guerrero and Oaxaca and flash floods could occur in some areas of steeper terrain.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Norma formed to the west of Hurricane Max.  At 11:00 a.m. EDT on Thursday the center of Tropical Storm Norma was located at latitude 17.2°N and longitude 109.5°W which put it about 395 miles (635 km) south of Cabo San Lucas, Mexico.  Norma was moving toward the north at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1004 mb.  Tropical Storm Norma is forecast to strengthen and move toward Baja California.  Normal could be a hurricane when it approaches southern Baja California in a few days.

Tropical Depression 16E Forms, Flood Risk for Mexico

Tropical Depression Sixteen-E formed south of Mexico on Wednesday morning.  At 11:00 a.m. EDT on Wednesday the center of Tropical Depression Sixteen-E was located at latitude 16.2°N and longitude 101.7°W which put it about 105 miles (165 km) south of Zihuatanejo, Mexico.  It was moving toward the north-northeast at 5 m.p.h. (8 km/h).  The maximum sustained wind speed was  35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 1006 mb.

A Tropical Storm Watch was issued for the portion of the coast from Zihuatanejo to Punta Maldonado, Mexico.

A distinct center of circulation formed in a cluster of thunderstorms south of Mexico and that National Hurricane Center designated the system as Tropical Depression Sixteen-E on Wednesday morning.  The circulation of the depression was still organizing.  Several bands of showers and thunderstorms were developing south and east of the center of circulation.  There were fewer showers and thunderstorms in the northwestern quadrant of the circulation and the depression may have been pulling in drier air from Mexico.

The depression has 12 to 18 hours to strengthen before it makes landfall on the coast of Mexico.  It will move over water where the Sea Surface Temperature is near 30°C.  An upper level trough extends from the eastern U.S. to Mexico.  The trough is producing westerly winds which are blowing toward the top of the circulation.  Those winds are generating moderate wind vertical shear, which will inhibit intensification.  Tropical Depression Sixteen-E could strengthen into a tropical storm before it reaches the coast of Mexico.

The upper level trough is forecast to steer Tropical Depression Sixteen-E toward the east.  On its anticipated track the depression could make landfall east of Zihuatanejo in less than 24 hours.  The depression will bring gusty winds, but heavy rain poses a greater threat.  Heavy rain falling in steeper terrain could cause flash floods.

Elsewhere over the Eastern North Pacific Ocean, Tropical Depression Fifteen-E was moving farther away from Mexico.  Tropical Depression Fifteen-E formed when momentum from the upper half of the circulation of former Hurricane Katia spun up a new surface circulation over the Eastern North Pacific.  At 11:00 a.m. EDT on Wednesday the center of Tropical Depression Fifteen-E was located at latitude 14.9°N and longitude 120.6°W which put it about 890 miles (1435 km) southwest of the southern tip of Baja California.  It was moving toward the west at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h).  The minimum surface pressure was 1004 mb.

Hurricane Irma Batters Bahamas, Jose Threatens Leewards, Katia Nears Mexico

The tropical Atlantic Ocean continued to be very active on Friday.  Destructive Hurricane Irma battered the Southeastern Bahamas and Turks and Caicos.  Powerful Hurricane Jose threatened the northern Leeward Islands only 48 hours after Hurricane Irma caused significant damage to them.  Hurricane Katia neared a landfall on the coast of Mexico between Tampico and Veracruz.

At 5:00 p.m. EDT on Friday the center of Hurricane Irma was located at latitude 22.1°N and longitude 76.5°W which put it about 345 miles (555 km) southeast of Miami, Florida.  Irma was moving toward the west at 12 m.p.h.  The maximum sustained wind speed was 155 m.p.h. (250 km/h) and there were wind gusts to 180 m.p.h. (290 km/h).  The minimum surface pressure was 925 mb.

A Hurricane Warning was in effect for the portion of the coast from Anna Maria Island to Sebastian Inlet, Florida including the Florida Keys and Lake Okeechobee.  Hurricane Watches were in effect for the portions of the coast from Anna Maria Island to the Suwannee River and from Sebastian Inlet to the Flagler/Volusia Count line.  A Hurricane Warning was in effect for the Cuban provinces of Camaguey, Ciego de Avila, Sancti Spiritus and Villa Clara.  Hurricane Warnings were in effect for the northwestern Bahamas including the Abacos, Andros island, Berry Island, Bimini, Eleuthera, Grand Bahama Island and New Providence.  Hurricane Warnings were in effect for the central Bahamas including Cat Island, the Exumas, Long Island, Rum Cay and San Salvador.  Hurricane Warnings were in effect for the southeastern Bahamas including the Acklins, Long Cay, Crooked Island, the Inaguas, Mayaguana and the Ragged Islands.

Hurricane Watches were in effect for the Cuba provinces of Matanzas, Holguin, Las Tunas and Guantanamo.  Tropical Storm Warnings were in effect for the Cuban provinces of Holguin, Las Tunas and Guantamo.

Hurricane Irma completed an eyewall replacement cycle on Friday morning.  After the inner eyewall dissipated the circulation rapidly concentrated on the outer eyewall.  The eyewall replacement cycle caused some weakening of Hurricane Irma but it remained a powerful Category 4 hurricane on the Saffir-Simpson Scale.  The eyewall replacement cycle resulted in an increase in the size of the circulation of Hurricane Irma.  Winds to hurricane force now extend out about 70 miles (110 km) from the center of circulation.  Winds to tropical storm force extend out almost 185 miles (295 km) from the center.

The Hurricane Intensity Index (HII) for Hurricane Irma is 33.3.  The Hurricane Size Index is 23.0 and the Hurricane Wind Intensity Size Index is 56.3.  Hurricane Irma is stronger, but a little smaller than Hurricane Wilma was when Wilma made landfall in south Florida in 2005.

Hurricane Irma is moving through a very favorable environment.  Irma is moving over water where the Sea Surface Temperature is near 30°C.  The upper level winds are weak and there is little vertical wind shear.  Part of the southern side of the circulation is passing over Cuba, but the core of Hurricane Wilma is remaining over water.  Hurricane Irma should remain a very powerful hurricane during the next 36 hours.

Hurricane Irma is moving near the western end of a large subtropical high that has been steering the hurricane toward the west.  Irma started to move a little more slowly on Friday afternoon as it approached the end of the high.  Hurricane Irma is forecast to continue to move west-northwest for another 12 to 24 hours.  When Hurricane Irma reaches the end of the high, it will start moving toward the north.  On its anticipated track the core of Hurricane Irma will pass north of the north coast of Cuba on Saturday.  Hurricane Irma is forecast to reach the Florida Keys on Saturday night.

Hurricane Irma is a large and dangerous hurricane.  Irma is capable of causing widespread extensive damage.  Hurricane Irma’s winds will be very destructive and they could cause widespread power outages in Florida.  There will be a significant storm surge in the Florida Keys and on both the east and west coast of Florida.

Hurricane Jose intensified rapidly on Friday to Category 4 on the Saffir-Simpson Scale.  Jose now threatens to bring very strong winds to places devastated by Hurricane Irma earlier this week.  At 5:00 p.m. EDT on Friday the center of Hurricane Jose was located at latitude 16.6°N and longitude 58.3°W which put it about 335 miles (540 km) east of the Leeward Islands.  Jose was moving toward the west-northwest at 17 m.p.h.  The maximum sustained wind speed was 150 m.p.h. (240 km/h) and there were wind gusts to 180 m.p.h. (290 km/h).  The minimum surface pressure was 940 mb.

Hurricane Warnings are in effect for Barbuda, Anguilla, St. Barthelemy, Sint Maarten and St. Martin.  A Hurricane Watch is in effect for Antigua.  Tropical Storm Warnings are in effect for Antigua, Saba and St. Eustatius.  Tropical Storm Watches are in effect for Montserrat, St. Kitts, Nevis, the British Virgin Islands, St. Thomas and St. John.

Hurricane Jose has a small, well organized circulation.  There is a clear eye at the center of circulation.  The eye is surrounded by a ring of strong thunderstorms and the strong winds are occurring in that ring of storms.  Hurricane Jose is much smaller than Hurricane Irma.  Winds to hurricane force extend out about 35 miles (55 km) from the center of circulation.  Winds to tropical storm force extend out about 140 miles (225 km) from the center.

Upper level divergence from Hurricane Irma is causing some vertical wind shear over Hurricane Jose, but the shear did not prevent Jose from intensifying into a major hurricane.  Hurricane Jose is forecast to remain a major hurricane for several more days.  The same subtropical high steering Hurricane Irma is also steering Jose toward the west north-west.  On its anticipated track Hurricane Jose could reach the northern Leeward Islands late on Saturday.  Some of those islands suffered widespread extensive damage from Hurricane Irma and a direct hit by Jose would be devastating.  Even if the core of Hurricane Jose moves just north of those islands, the strong winds will serious affect efforts to recover from Hurricane Irma.

After being nearly stationary over the southwestern Gulf of Mexico for several days, Hurricane Katia began to move toward the coast of Mexico on Friday.  At 5:00 p.m. EDT on Friday the center of Hurricane Katia was located near latitude 21.0°N and longitude 96.5°W which put it about 125 miles (225 km) north of Veracruz, Mexico.  Katia was moving toward the west-southwest at 7 m.p.h.  The maximum sustained wind speed was 105 m.p.h. (165 km/h) and there were wind gusts to 125 m.p.h. (205 km/h).  The minimum surface pressure was 972 mb.

A Hurricane Warning was in effect for the portion of the coast from Cabo Rojo to Laguna Verde, Mexico.

Hurricane Katia is a small hurricane.  Winds to hurricane force only extend out about 25 miles (40 km) from the center.  Winds to tropical storm force only extend out about 70 miles (110 km) from the center.

A mid-level ridge over the western Gulf of Mexico is steering Hurricane Katia toward the west-southwest.  On its anticipated track Hurricane Katia will make landfall on the coast of Mexico between Tampico and Veracruz on Friday night.  The center is likely to make landfall near Tecolutla.  Although the small size of Katia’s circulation will limit the wind damage, the hurricane will cause a significant storm surge along the portion of the coast where the center makes landfall.  Katia will also produce heavy rain and a chance for flash floods as it moves inland and dissipates.

Powerful Hurricane Irma Approaches Bahamas, Watches Issued for Florida

Powerful Hurricane Irma move north of the Dominican Republic on its approach to the Bahamas on Thursday morning.  Hurricane Watches were issued for south Florida because of the potential impact of Hurricane Irma.  At 11:00 a.m. EDT on Thursday the center of Hurricane Irma was located at latitude 20.4°N and longitude 69.7°W which put it about 120 miles (190 km) southeast of Grand Turk Island and about 785 miles (1265 km) east-southeast of Miami, Florida.  The maximum sustained wind speed was 175 m.p.h. (280 km/h) and there were wind gusts to 200 m.p.h. (320 km/h).  The minimum surface pressure was 921 mb.

Hurricane Warnings were in effect for the portion of the coast from Cabo Engano, Dominican Republic to Le Mole St. Nicholas, Haiti, the Turks and Caicos, the southeastern Bahamas including the Acklins, Crooked Island, Long Cay, the Inaguas, Mayaguana and the Ragged Islands, the central Bahamas including Cat Island, the Exumas, Long Island, Rum Cay and San Salvador, the northwestern Bahamas including the Abacos, Andros Island, Berry Island, Bimini, Eleuthera, Grand Bahama Island and New Providence.

A Hurricane Watch was in effect for the portion of the coast from Jupiter Inlet to Bonita Beach, Florida including the Florida Keys and Lake Okeechobee and from Matanzas province to Guantanamo province in Cuba.

A Tropical Storm Warning is in effect for the portion of the coast from Cabo Engano, Dominican Republic to the southern border with Haiti, from Le Mole St. Nicholas to Port Au Prince, Haiti and for the Cuban provinces of Guantanamo, Holguin and Las Tunas.

Hurricane Irma remains a large and dangerous hurricane.  Irma weakened slightly on Thursday morning, but it still was a Category 5 hurricane on the Saffir-Simpson Scale.  Irma has a large circular eye at the center of circulation.  The eye is surrounded by a ring of strong thunderstorms and the strongest winds are occurring in that ring of storms.  Winds to hurricane force extend out about 60 miles (95 km) from the center.  Winds to tropical storm force extend out about 185 miles (305 km) from the center.

The Hurricane Intensity Index (HII) for Hurricane Irma is 40.4.  The Hurricane Size Index (HSI) is 19.2 and the Hurricane Wind Intensity Size Index (HWISI) is 59.6.  Those indices indicate that Hurricane Irma is capable of causing widespread catastrophic damage.

Hurricane Irma will remain in a favorable environment for the next several days.  Irma will move over water where the Sea Surface Temperature is near 30°C.  The upper level winds will be weak and there will be little vertical wind shear during the next 24 to 36 hours.  When Irma gets farther north it will be near the southern end of a large upper level trough over the eastern U.S.  The trough will produce southeasterly winds which will increase the shear somewhat.  Hurricane Irma will remain a large dangerous hurricane.

Hurricane Irma is moving around the western end of a subtropical high over the Atlantic Ocean.  The high is steering Irma toward the west-northwest and that general motion is expected to continue for another 36 to 48 hours.  The effects of the upper level trough are expected to turn Irma toward the north during the weekend.  On its anticipated track Hurricane Irma will reach the Turks and Caicos on Thursday night.  Irma will move across the southeastern Bahamas on Friday and it could be north of Cuba by Saturday morning.  Hurricane Irma could reach southern Florida by Sunday morning.

Hurricane Irma is capable of causing widespread catastrophic damage.  Irma will generate storm surges as high as 19 feet (6 meters) when it passes over the Bahamas.  Irma will cause widespread wind damage and locally heavy rain could cause flash floods.

The destructive core of Hurricane Irma moved over Barbuda, St. Barthelemy and St. Martin.  There are reports of widespread damage on those islands.  Other nearby islands my have also suffered significant damage.

Hurricane Jose is following in the wake of Hurricane Irma and Watches have been issued for some of the northern Leeward Islands.  At 11:00 a.m. EDT on Thursday the center of Hurricane Jose was located at latitude 14.9°N and longitude 50.6°W which put it about 715 miles (1155 km) east of the Leeward Islands.  Jose was moving toward the west-northwest at 18 m.p.h. (30 km/h).  The maximum sustained wind speed was 90 m.p.h. (150 km/h) and there were wind gusts to 105 m.p.h. (170 km/h).  The minimum surface pressure was 986 mb.

Hurricane Watches have been issued for Antigua and Barbuda.  Tropical Storm Watches have been issued for Anguilla, Montserrat, St. Kitts and Nevis.

Hurricane Jose is moving through a favorable environment of warm Sea Surface Temperatures and little vertical wind shear.  Hurricane Jose is forecast to intensify into a major hurricane.  The same subtropical high steering Hurricane Irma is also steering Hurricane Jose.  On its anticipated track Hurricane Jose could reach the northern Leeward Islands on Saturday.  It could be a major hurricane at that time.  If Hurricane Jose moves over some of the same places hit by Hurricane Irma it will serious impede efforts to recover from Irma.

Hurricane Katia is threatening parts of Mexico.  At 11:00 a.m. EDT on Thursday the center of Hurricane Katia was located at latitude 21.6°N and longitude 94.6°W which put it about 215 miles (345 km) east of Tampico, Mexico.  Katia was stationary.  the maximum sustained wind speed was 80 m.p.h. (130 km/h) and there were wind gusts to 95 m.p.h. (155km/h)  The minimum surface pressure was 980 mb.

A Hurricane Warning is in effect for the portion of the coast from Cabo Rojo to Laguna Verde, Mexico.

 

Tropical Storm Lidia Weakens, Still Raining on Baja California

Tropical Storm Lidia has weakened but it is producing rain over Baja California.  At 2:00 p.m. EDT on Saturday the center of Tropical Storm Lidia was located at latitude 28.3°N and longitude 114.6°W which put it about 40 miles (65 km) northeast of Punta Eugenia, Mexico.  Lidia was moving toward the northwest at 12 m.p.h. (19 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 999 mb.

A Tropical Storm Warning is in effect for the portion of the coast from Punta Abreojos to San Jose de Las Palomas, from Mulege to Isla San Luis and from Guaymas to Puerto Libertad, Mexico.

Tropical Storm Lidia weakened during the past 24 hours as it slowly moved northwest over Baja California.  There are some indications that the upper portion of the circulation may have decoupled from the lower half of Tropical Storm Lidia.  The upper portion of the circulation appears to be over the Gulf of California.  There are stronger thunderstorms over the Gulf of California because the Sea Surface Temperature is near 32°C in that body of water.  Those thunderstorms are producing heavy rain over parts of the eastern side of Baja California and the western part of Mexico adjacent to the Gulf of California.  The lower level center appears to be located northeast of Punta Eugenia over the Pacific Ocean just west of Baja California.  There are showers and thunderstorms near the low level center and they are dropping heavy rain in that area.  The potential for flash floods still exists in the areas where heavy rain is falling.

The low level center of Tropical Storm Lidia is forecast to continue to move toward the northwest.  Lidia will continue to weaken because the low level center is moving over water where the Sea Surface Temperature is near 23°C.  It will take several more days for the low level center to spin down and it could still produce locally heavy rain over the northern part of Baja California during that time.  The upper level portion of the circulation will likely be absorbed by the larger scale environmental flow in those levels.  Some clouds and moisture in the upper levels could flow over the southwestern U.S.

Tropical Storm Lidia Brings Wind and Heavy Rain to Baja California

Tropical Storm Lidia brought gusty winds and very heavy rain to Baja California on Thursday night.  At 11:00 p.m. EDT on Thursday the center of Tropical Storm Lidia was located at latitude 23.3°N and longitude 110.4°W which put it about 40 miles (65 km) northwest of Cabo San Lucas, Mexico.  Lidia was moving toward the north-northwest at 4 m.p.h. (6 km/h).  The maximum sustained wind speed was 65 m.p.h. (105 km/h) and there were wind gusts to 80 m.p.h. (130 km/h).  The minimum surface pressure was 991 mb.

A Hurricane Watch was in effect for the portion of the coast from Puerto Cortes to La Paz, Mexico including Cabo San Lucas.  A Tropical Storm Warning was in effect for the portion of the coast from Punta Eugenia to Bahia San Juan Bautista including Cabo San Lucas and from Bahia Tempehuaya to Bahia Kino.  A Tropical Storm Watch was in effect for the portion of the coast from Punta Eugenia to San Juan de Las Palomas and from Bahia San Juan Bautista to Isla San Luis and from Bahia Kino to Puerto Libertad.

Tropical Storm Lidia intensified as it approached the southern tip of Baja California on Thursday.  Several bands of showers and thunderstorms wrapped around the center of circulation and a partial eyewall appeared to form.  The airport at Cabo San Lucas reported sustained winds of 58 m.p.h. (83 km/h) and a Mexican automated station reported a sustained wind of 70 m.p.h. (113 km/h) and gusts to 90 m.p.h. (145 km/h) at a height of 735 feet (244 meters).  Tropical Storm Lidia has a large circulation.  Winds to tropical storm force extend out about 185 miles (295 km) from the center of circulation.

The large size of Tropical Storm Lidia meant that it was bringing tropical storm winds to the southern part of Baja California and parts of the west coast of Mexico.  Lidia was also producing very heavy rain over Baja California.  Flash floods are likely in places where steep terrain causes water to run off quickly.

Tropical Storm Lidia is forecast to move slowly north-northwest over Baja California.  The slow motion will prolong the period of gusty winds.  It will also cause the rain totals to be higher and increase the risk for floods.  Much of the circulation will remain over water and the large size of Lidia will mean that the tropical storm will weaken slowly.

Tropical Storm Lidia Threatens Baja California

Tropical Storm Lidia became an increased threat to Baja California as it moved closer on Wednesday night.  At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Lidia was located at latitude 20.7°N and longitude 109.2°W which put it about 160 miles (255 km) south-southeast of the southern tip of Baja California.  Lidia was moving toward the north-northwest at 7 m.p.h. (11 km/h).  The maximum sustained wind speed was 40 m.p.h. (65 km/h) and there were wind gusts to 50 m.p.h. (80 km/h).  The minimum surface pressure was 1001 mb.

A Hurricane Watch is in effect for the portion of the coast from Puerto Cortes to La Paz, Mexico including Cabo San Lucas.  A Tropical Storm Warning is in effect for the portion of the coast from Puerto Cortes to San Evaristo including Cabo San Lucas and from Tempehuaya to Huatabampito, Mexico.  A Tropical Storm Watch is in effect for the portion of the coast from San Evaristo to Loreto, Mexico and from Puerto Cortes to Puerto Andresito.

A distinct center of circulation began consolidating in a large area of low pressure previously designated Potential Tropical Cyclone Fourteen-E on Wednesday.  Numerous bands of showers and thunderstorms started developing around the consolidating center.  There were more showers and thunderstorms in the southern half of the circulation than there were in the northern half of the circulation.  Thunderstorms southwest of the center of circulation were beginning to generate some upper level divergence, but it was not well developed.  Tropical Storm Lidia formed out of a large low pressure system and it still has a large circulation.  Winds to tropical storm force extend out about 120 miles (195 km) from the center on the eastern side of Lidia.

Tropical Storm Lidia was in an environment that was marginally favorable for intensification on Wednesday.  Lidia was moving over water where the Sea Surface Temperature was near 30°C.  An upper level ridge to the east of Lidia was producing westerly winds which were causing moderate vertical wind shear, especially over the northern half of the circulation.  The environment around Tropical Storm Lidia is forecast to become a little more favorable for intensification on Thursday.  The upper level winds are forecast to become weaker, which would reduce the wind shear.  Lidia will still be moving over very warm water and it should intensify on Thursday.  The rate of intensification could increase as the core of the tropical storm becomes more organized.  There is a chance that Lidia could strengthen into a hurricane which is why there is a Hurricane Watch for part of Baja California.

Lidia is moving around the western end of a subtropical ridge, which is steering the tropical storm toward the north-northwest.  A general north-northwesterly motion is expected to continue for another day or two.  On its anticipated track the center of Tropical Storm Lidia could reach the southern tip of Baja California by Thursday evening.  In addition to gusty winds Tropical Storm Lidia will produce very heavy rain.  Heavy rain falling on the steep terrain of Baja California creates the risk of flash floods.

Potential Tropical Cyclone Fourteen-E Prompts Hurricane Watch for Baja California

The National Hurricane Center is forecasting that a weather system currently designated as Potential Tropical Cyclone Fourteen-E will become a tropical storm and affect Baja California.  The government of Mexico has issued a Hurricane Watch and a Tropical Storm Warning for the portion of the coast from Todos Santo to Los Barriles including Cabo San Lucas.

At 5:00 p.m. EDT on Tuesday the center of Potential Tropical Cyclone Fourteen-E was located at latitude 17.2°N and longitude 107.2°W which put it about 430 miles (695 km) south-southeast of the southern tip of Baja California.  It was moving toward the northwest at 9 m.p.h. (15 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1006 mb.

The circulation of Potential Tropical Cyclone Fourteen-E is in the early stages of organization.  There is a large counterclockwise circulation over the Eastern North Pacific Ocean west of Mexico.  Numerous showers and thunderstorms are forming within the circulation, but there is no well defined center of circulation.  There are fewer showers and thunderstorms in the eastern portion of the circulation.  An upper level ridge centered over Mexico is generating brisk easterly winds which are blowing over the top of the circulation.  Those winds are causing moderate vertical wind shear and the system has not yet begun to generate much upper level divergence.

Potential Tropical Cyclone Fourteen-E will move through an environment that will be somewhat favorable for intensification.  It will move over water where the Sea Surface Temperature is near 30°C.  So, there is plenty of energy in the upper ocean to support intensification.  The strength of the upper level winds is forecast to diminish and the wind shear is likely to decrease.  If the wind shear decreases, then the environment will become more favorable for intensification.  Intensification is likely to be slow while the circulation becomes more organized and develops a distinct low level center.  Potential Tropical Cyclone Fourteen-E could become a tropical storm on Wednesday.  It has a chance to intensify to a hurricane on Thursday.

Potential Tropical Cyclone Fourteen-E is moving around the western end of a subtropical ridge.  The ridge is steering the system toward the northwest and a general northwesterly motion is expected to continue for another day or two.  On its anticipated track the center of Potential Tropical Cyclone Fourteen-E could approach the southern part of Baja California by late on Thursday.  It could be a strong tropical storm or a hurricane at that time.  Locally heavy rain falling on the steep terrain of Baja California always creates a risk for flash floods.