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Tropical Storm Celia Passes South of Baja California

Tropical Storm Celia passed south of Baja California on Saturday. At 11:00 a.m. EDT on Saturday the center of Tropical Storm Celia was located at latitude 18.5°N and longitude 110.8°W which put it about 310 miles (500 km) south of Cabo San Lucas, Mexico. Celia was moving toward the west-northwest at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 65 m.p.h. (105 km/h) and and there were wind gusts to 80 m.p.h. (130 km/h). The minimum surface pressure was 994 mb.

Tropical Storm Celia began to be affected by cooler water to its northwest on Saturday. The distribution of thunderstorms around Celia’s circulation was asymmetrical. The strongest thunderstorms were occurring in bands in the eastern half of Tropical Storm Celia, which was still over warmer water. Bands in the western half of Celia, which was over cooler water, consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 100 miles (160 km) in the eastern side of Tropical Storm Celia. Winds to tropical storm force extended out 60 miles (95 km) in the western side of Celia.

Tropical Storm Celia will move into an environment that will be unfavorable for intensification during the next few days. Celia will move over water where the Sea Surface Temperatures are colder than 26˚C. It will move under the southeastern part of an upper level ridge over the Eastern North Pacific Ocean. The ridge will produce northeasterly winds that will blow toward the top of Celia’s circulation. Those winds will cause more vertical wind shear. A combination of cooler water and more vertical wind shear will cause Tropical Storm Celia to weaken during the next few days.

Tropical Storm Celia will move south of a high pressure system over northern Mexico and the Eastern North Pacific. The high pressure system will steer Celia toward the west-northwest during the next few days. On its anticipated track Tropical Storm Celia will move farther away from Baja California.

Tropical Storm Celia Churns Southwest of Mexico

Tropical Storm Celia churned over the Eastern North Pacific Ocean southwest of Mexico on Wednesday night. At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Celia was located at latitude 14.2°N and longitude 104.4°W which put it about 330 miles (535 km) south of Manzanillo, Mexico. Celia was moving toward the northwest at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 50 m.p.h. (80 km/h) and and there were wind gusts to 65 m.p.h. (105 km/h). The minimum surface pressure was 1000 mb.

Winds to tropical storm force extended out 70 miles (110 km) from the center of Celia’s circulation. Even though Tropical Storm Celia strengthened a little on Wednesday, the distribution of thunderstorms remained asymmetrical. The strongest thunderstorms were occurring in bands in the western and southern parts of Celia’s circulation. Bands in the eastern and northern parts of Tropical Storm Celia consisted primarily of showers and lower clouds. An upper level ridge over Mexico and the Eastern North Pacific Ocean was producing moderate east-northeasterly winds that were blowing toward the top of Celia’s circulation. Those winds were causing some vertical wind shear and the wind shear was contributing to the asymmetrical distribution of thunderstorms.

Tropical Storm Celia will move through an environment that will become more favorable for intensification during the next 48 hours. Celia will move over water where the Sea Surface Temperatures are near 28˚C. Although the upper level ridge over Mexico and the Eastern North Pacific will continue to produce east-northeasterly winds, those winds will weaken during the next 48 hours. When the upper level winds weaken, the vertical wind shear will diminish. Tropical Storm Celia is likely to intensify during the next 48 hours. Celia could strengthen to a hurricane on Friday.

Tropical Storm Celia will move southwest of a high pressure system over Mexico during the next 48 hours. The high pressure system will steer Celia toward the west-northwest. On its anticipated track Tropical Storm Celia will move south of Baja California by Saturday.

Celia Strengthens Back to a Tropical Storm

One time Tropical Storm Celia strengthened back to a tropical storm over the Eastern North Pacific Ocean south of Mexico on Tuesday morning. At 11:00 a.m. EDT on Tuesday the center of Tropical Storm Celia was located at latitude 11.6°N and longitude 99.5°W which put it about 365 miles (590 km) south of Acapulco, Mexico. Celia was moving toward the west at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 1005 mb.

After passing south of Guatemala during the weekend as a weak tropical depression, former Tropical Storm Celia strengthened back to a tropical storm on Tuesday morning. Winds to tropical storm force extended out 60 miles in the northern half of Tropical Storm Celia. Winds in the southern half of Celia were blowing at less than tropical storm force. The circulation around Tropical Storm Celia continued to be poorly organized. The strongest thunderstorms were occurring in bands located west of the center of Celia’s circulation. Bands in the eastern half of the circulation consisted primarily of showers and lower clouds. An upper level ridge over southern Mexico was producing moderate easterly winds that were blowing across the top of Celia’s circulation. Those winds cause moderate vertical wind shear and the wind shear was causing the asymmetrical distribution of thunderstorms.

Tropical Storm Celia will move through an environment that will be only marginally favorable for intensification during the next 24 hours. Celia will move over water where the Sea Surface Temperatures are near 29˚C. However, the upper level ridge over southern Mexico will continue to cause moderate vertical wind shear. The wind shear will inhibit intensification during the next day or so. Tropical Storm Celia will move into an area where the upper level winds are weaker later this week. That will cause the vertical wind shear to diminish. Tropical Storm Celia is likely to intensify when the shear diminishes. Celia could strengthen to a hurricane by the end of the week.

Tropical Storm Celia will move south of a high pressure system over Mexico during the next 48 hours. The high pressure system will steer Celia toward the west-northwest. On its anticipated track Tropical Storm Celia will move parallel to the coast of southwest Mexico.

Tropical Depression Celia Passes South of Guatemala

Tropical Depression Celia passed south of Guatemala on Sunday. At 11:00 a.m. EDT on Sunday the center of Tropical Depression Celia was located at latitude 12.8°N and longitude 92.4°W which put it about 130 miles (210 km) southwest of Puerto San Jose, Guatemala. Celia was moving toward the west at 8 m.p.h. (13 km/h). The maximum sustained wind speed was 30 m.p.h. (50 km/h) and and there were wind gusts to 40 m.p.h. (65 km/h). The minimum surface pressure was 1008 mb.

The circulation around Tropical Depression Celia weakened during the weekend. A few thunderstorms formed near the center of Celia, but most of the circulation consisted of bands of showers and lower clouds. An upper level ridge over southeastern Mexico produced easterly winds that blew across the top of Tropical Depression Celia. Those winds caused moderate vertical wind shear. The wind shear blew the tops off of many of the thunderstorms that started to develop in Tropical Depression Celia.

Tropical Depression Celia will move through an environment mostly unfavorable for intensification during the next 24 hours. Celia will move over water where the Sea Surface Temperatures are near 28˚C. However, the upper level ridge over southeastern Mexico will continue to cause moderate vertical wind shear. The wind shear will prevent intensification during the next day or so. Tropical Depression Celia will move into an area where the upper level winds are weaker early next week. That will cause the vertical wind shear to diminish. Tropical Depression Celia could strengthen when the shear diminishes.

Tropical Depression Celia will move south of a high pressure system over Mexico during the next 48 hours. The high pressure system will to steer Celia toward the west. On its anticipated track Tropical Depression Celia will move parallel to the south coast of Mexico.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Blas weakened south of Baja California. At 11:00 a.m. EDT on Sunday the center of Tropical Storm Blas was located at latitude 19.0°N and longitude 113.0°W which put it about 335 miles (540 km) southwest of the southern tip of Baja California. Blas was moving toward the west-northwest at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 1001 mb.

Tropical Depression Three-E Strengthens to Tropical Storm Celia

Former Tropical Depression Three-E strengthened to Tropical Storm Celia over the Eastern North Pacific Ocean south of El Salvador on Friday morning. At 11:00 a.m. EDT on Friday the center of Tropical Storm Celia was located at latitude 11.6°N and longitude 89.3°W which put it about 145 miles (235 km) south of San Salvador, El Salvador. Celia was moving toward the north-northeast at 3 m.p.h. (5 km/h). The maximum sustained wind speed was 40 m.p.h. (65 km/h) and and there were wind gusts to 50 m.p.h. (80 km/h). The minimum surface pressure was 1004 mb.

The circulation around former Tropical Depression Three-E strengthened on Friday morning and the National Hurricane Center upgraded it to Tropical Storm Celia. The strongest thunderstorms were occurring in bands in the western half of Tropical Storm Celia. Bands in the eastern half of Celia’s circulation consisted primarily of showers and lower clouds. The thunderstorms in the western half of the circulation generated upper level divergence that pumped mass away from the tropical storm. The circulation around Tropical Storm Celia was small. Winds to tropical storm force extended out 35 miles (55 km) from the center of Celia.

Tropical Storm Celia will move through an environment favorable for intensification during the next 24 hours. Celia will move over water where the Sea Surface Temperatures are near 27˚C. It will be in an area where the upper level winds are weak and there will be little vertical wind shear. Tropical Storm Celia could strengthen gradually during the next 24 hours.

Tropical Storm Celia will be in an area where the steering winds are weak during the next 18 hours. A broad area of low pressure over Central America and the adjacent part of the Eastern North Pacific Ocean will steer Celia slowly toward the north during the next 18 hours. On its anticipated track Tropical Storm Celia will move slowly closer to El Salvador. Rainbands in the northern fringes of Celia could drop heavy rain over parts of El Salvador and Guatemala. Heavy rain could cause flash floods in some locations. A high pressure system will strengthen over Mexico during the weekend. The high pressure system is likely to steer Tropical Storm Celia toward the west.

Elsewhere over the Eastern North Pacific Ocean, Hurricane Blas strengthened a little as it moved away from the southwest coast of Mexico. At 11:00 a.m. EDT on Friday the center of Hurricane Blas was located at latitude 17.8°N and longitude 109.0°W which put it about 320 miles (515 km) southwest of Manzanillo, Mexico. Blas was moving toward the west-northwest at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 90 m.p.h. (145 km/h) and and there were wind gusts to 105 m.p.h. (165 km/h). The minimum surface pressure was 976 mb.

Tropical Depression Three-E Forms South of El Salvador

Tropical Depression Three-E formed over the Eastern North Pacific Ocean south of El Salvador on Thursday afternoon. At 5:00 p.m. EDT on Thursday the center of Tropical Depression Three-E was located at latitude 10.8°N and longitude 89.9°W which put it about 205 miles (330 km) south-southwest of San Salvador, El Salvador. The tropical depression was moving toward the north at 2 m.p.h. (3 km/h). The maximum sustained wind speed was 35 m.p.h. (55 km/h) and and there were wind gusts to 45 m.p.h. (75 km/h). The minimum surface pressure was 1006 mb.

A low pressure system over the Eastern North Pacific Ocean south of El Salvador strengthened on Thursday afternoon and the National Hurricane Center designated the system as Tropical Depression Three-E. The inner end of a rainband wrapped around the western and southern sides of the center of Tropical Depression Three-E. Other bands of showers and thunderstorms were revolving around the center of the depression. Storms near the center of circulation generated upper level divergence that pumped mass away from the tropical depression.

Tropical Depression Three-E will move through an environment favorable for intensification during the next 24 hours. The tropical depression will move over water where the Sea Surface Temperatures are near 28˚C. It will be in an area where the upper level winds are weak and there will be little vertical wind shear. Tropical Depression Three-E is very likely to strengthen to a tropical storm during the next 24 hours.

Tropical Depression Three-E will be in an area where the steering winds are weak during the next 24 hours. A broad area of low pressure over Central America and the adjacent part of the Eastern North Pacific Ocean will steer the tropical depression slowly toward the north during the next 24 hours. On its anticipated track Tropical Depression Three-E will move slowly closer to El Salvador. Rainbands in the northern fringes of the tropical depression could drop heavy rain over parts of El Salvador and Guatemala. Heavy rain could cause flash floods in some locations.

Elsewhere over the Eastern North Pacific Ocean, Hurricane Blas churned southwest of Mexico. At 5:00 p.m. EDT on Thursday the center of Hurricane Blas was located at latitude 16.2°N and longitude 105.6°W which put it about 210 miles (340 km) south-southwest of Manzanillo, Mexico. Blas was moving toward the west-northwest at 8 m.p.h. (13 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 980 mb.

Tropical Storm Carlos Forms Southwest of Baja California

Tropical Storm Carlos formed southwest of Baja California on Saturday night. At 11:00 p.m. EDT on Saturday the center of Tropical Storm Carlos was located at latitude 11.9°N and longitude 124.5°W which put it about 1225 miles (1970 km) southwest of the southern tip of Baja California. Carlos was moving toward the west 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 1005 mb.

The circulation around a low pressure system southwest of Baja California exhibited more organization on satellite imagery on Saturday night and the National Hurricane Center designated the system as Tropical Storm Carlos. More thunderstorms were developing near the center of Carlos. Storms near the center of circulation began to generate upper level divergence that pumped mass away from the tropical storm. However, the distribution of thunderstorms was asymmetrical. The strongest thunderstorms were occurring in bands in the southern half of Tropical Storm Carlos. Bands in the northern half of the circulation consisted primarily of showers and lower clouds. Winds to tropical storm force extended out 25 miles (40 km) on the northern side of Carlos. The winds were blowing at less than tropical storm force in the southern half of the circulation.

Tropical Storm Carlos will move through an environment that is somewhat favorable for intensification during the next 24 hours. Carlos will move over an area where the Sea Surface Temperatures are near 28°C. It will move under the southeastern part of an upper level ridge over the Eastern North Pacific Ocean. The ridge will produce northeasterly winds that will blow toward the top of Tropical Storm Carlos. Those winds will cause vertical wind shear and they already contributed to the asymmetrical distribution of thunderstorms. The wind shear will inhibit intensification, but the shear will not be enough to prevent intensification. Tropical Storm Carlos will likely strengthen on Sunday.

Tropical Storm Carlos will move south of a subtropical high pressure system over the Eastern North Pacific Ocean. The high pressure system will steer Carlos toward the west during the next 24 hours. The steering currents could weaken during the early part of next week and Tropical Storm Carlos could meander slowly well to the southwest of Baja California.

Tropical Storm Boris Develops East-Southeast of Hawaii

Tropical Storm Boris developed east-southeast of Hawaii on Thursday afternoon.  At 5:00 p.m. EDT on Thursday the center of Tropical Storm Boris was located at latitude 11.2°N and longitude 137.1°W which put it about 1330 miles (2145 km) east-southeast of Hilo, Hawaii.  Boris was moving toward the west-northwest at 9 m.p.h. (15 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 1005 mb.

More thunderstorms developed Thursday afternoon near a low pressure system southeast of Hawaii that was previously designated as Tropical Depression Three-E.  A scatterometer on board a satellite detected winds to 40 m.p.h. (65 km) near the center of the low pressure system and the National Hurricane Center designated the system as Tropical Storm Boris.  A band of showers and thunderstorms wrapped around the southern and eastern sides of the center of circulation and the strongest winds were occurring in that band of storms.  A few other short bands of showers and thunderstorms developed in the eastern half of Boris.  Bands in the western half of the circulation consisted primarily of showers and lower clouds.  Winds to tropical storm force extended out about 50 miles from the center of circulation.

Tropical Storm Boris will move through an environment marginally favorable for intensification during the next 12 to 24 hours.  Boris will move over water where the Sea Surface Temperature is near 26.5°C.  A large upper level trough between Hawaii and the West Coast of the U.S. will produce southwesterly winds which will blow toward the top of the circulation.  Those winds will cause moderate vertical wind shear and the shear will limit intensification.  In addition, there is drier air north and west of Tropical Storm Boris.  Boris could intensify during the next 12 hours in spite of the moderate vertical wind shear and drier air.  However, Tropical Storm Boris will move into a region where the upper level winds are stronger during the weekend.  When the vertical wind shear increases, Boris will weaken.

Tropical Storm Boris will move south of a subtropical high pressure system over the Eastern North Pacific Ocean.  The will steer Boris toward the west-northwest during the next 24 hours.  When Tropical Storm Boris weakens during the weekend, it will be steered by winds closer to the surface.  Those winds will steer Boris toward the west.  On its anticipated track the weakening Tropical Storm Boris will pass southeast of Hawaii.

Tropical Storm Cosme Forms Southwest of Baja California

Tropical Storm Cosme formed southwest of Baja California on Saturday.  At 11:00 a.m. EDT on Saturday the center of Tropical Storm Cosme was located at latitude 15.6°N and longitude 115.7°W which put it about 630 miles (1015 km) southwest of the southern tip of Baja California.  Cosme was moving toward the west-northwest at 14 m.p.h. (22 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.

The National Hurricane Center (NHC) determined on Saturday that a distinct center of circulation had developed in a broader area of lower pressure and NHC designated the system as Tropical Storm Cosme.  The distribution of thunderstorms around Tropical Storm Cosme was asymmetrical.  The stronger thunderstorms were occurring in bands in the eastern half of the circulation.  Bands in the western half of the circulation consisted primarily of showers and lower clouds.  An upper level trough near Baja California was producing strong southwesterly winds which were blowing across the top of the circulation.  Those winds were causing strong vertical wind shear and they were probably the reason for the asymmetrical distribution of thunderstorms.  Winds to tropical storm force extended out about 150 miles (240 km) from the center of circulation.

Tropical Storm Cosme will move through an environment that is not favorable for significant intensification.  Cosme will move over water where the Sea Surface Temperature is near 26°C.  The upper level trough will continue to produce southwesterly winds that will blow toward the top of Tropical Storm Cosme.  The upper level winds are likely to weaken somewhat, but they will continue to cause vertical wind shear.  Tropical Storm Cosme could intensify a little during the next 24 hours, but it is not likely to strengthen significantly.

Tropical Storm Cosme will move south of a subtropical high pressure system over Eastern North Pacific Ocean.  The high will steer Cosme toward the west-northwest.  On its anticipated track Tropical Storm Cosme is forecast to remain well to the west of Baja California.

Elsewhere over the Eastern North Pacific Ocean, Tropical Storm Barbara continued to weaken as it moved toward Hawaii.  At 11:00 a.m. EDT on Saturday the center of Tropical Storm Barbara was located at latitude 18.7°N and longitude 139.2°W which put it about 1040 miles (1670 km) east of Hilo, Hawaii.  Barbara was moving toward the west at 17 m.p.h. (28 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 1000 mb.

TD 4E Strengthens to Tropical Storm Carlotta

Tropical Depression Four-E strengthened to Tropical Storm Carlotta south of Mexico on Friday afternoon.  At 2:00 p.m. EDT on Friday the center of Tropical Storm Carlotta was located at latitude 16.0°N and longitude 99.4°W which put it about 60 miles (95 km) south-southeast of Acapulco, Mexico.  Carlotta was moving toward the northeast 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 1006 mb.  A Tropical Storm Warning was in effect for the portion of the coast from Tecpan de Galeana to Lagunas de Chacahua, Mexico.

A single, distinct center of circulation developed in Tropical Depression Four-E on Friday afternoon and the National Hurricane Center designated the system as Tropical Storm Carlotta.  It is possible that the mountains in Mexico deflected the circulation in the lower levels and contributed to the improved organization of Tropical Storm Carlotta.  Stronger thunderstorms were forming near the center of circulation.  A primary band of showers and thunderstorms developed east and south of the core of Carlotta.  Other rainbands were revolving around the core of the tropical storm.  Storms in the core were generating upper level divergence and Carlotta looked like a tropical storm on satellite images.

Tropical Storm Carlotta will remain in an environment favorable for intensification while the center is over water.  The Sea Surface Temperature of the water south of Mexico is near 30°C.  The upper level winds are weak in that area and there is little vertical wind shear.  Carlotta could strengthen further during the next 12 hours.  When the center nears the coast of Mexico, the circulation could begin to pull in drier air from over the land.  If that happens, then Tropical Storm Carlotta could start to weaken even before the center officially makes landfall.

The steering winds are weak around Tropical Storm Carlotta.  A trough in the lower levels is moving across the southwestern Gulf of Mexico and it appears to be pulling Carlotta slowly toward the northeast.  On its anticipated track the center of Tropical Storm Carlotta will reach the coast of Mexico in 12 to 18 hours.  Tropical Storm Carlotta is expected to make landfall east of Acapulco.  Carlotta will produce some gusty winds but the greater risks are heavy rain and flash floods.

Elsewhere, Tropical Depression Bud is moving over the Gulf of California.  At 11:00 a.m. EDT on Friday the center of Tropical Depression Bud was located at latitude 25.3°N and longitude 110.0°W which put it about 70 miles (110 km) west of Los Mochis, Mexico.  Bud was moving toward the north at 12 m.p.h. (19 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 1002 mb.  Bud could drop heavy rain and cause flash floods in the states of Sinaloa, Sonora and Chihuahua.