Tag Archives: EP05

Hurricane Darby Rapidly Intensifies to Cat. 2

Hurricane Darby rapidly intensified to Category 2 on the Saffir-Simpson Scale over the Eastern North Pacific Ocean between Mexico and Hawaii on Sunday night. At 6:00 a.m. EDT on Monday the center of Hurricane Darby was located at latitude 14.5°N and longitude 122.2°W which put it about 995 miles (1595 km) southwest of the southern tip of Baja California. Darby was moving toward the west at 16 m.p.h. (26 km/h). The maximum sustained wind speed was 105 m.p.h. (165 km/h) and and there were wind gusts to 125 m.p.h. (200 km/h). The minimum surface pressure was 975 mb.

Hurricane Darby rapidly intensified on Sunday night. A circular eye with a diameter of 12 miles (19 km) was evident on infrared and microwave satellite images. The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the small core of Darby’s circulation. Storms near the core generated upper level divergence that pumped mass away from the hurricane. Winds to hurricane force extended out 15 miles (25 km) from the center of Darby’s circulation. Winds to tropical storm force extended out 60 miles (95 km) from the center of circulation.

The circulation around Hurricane Darby was small but very symmetrical. Darby looked like a small, annular hurricane. The Hurricane Intensity Index (HII) for Hurricane Darby was 17.8. The Hurricane Size Index (HSI) was 4.5 and the Hurricane Wind Intensity Size Index (HWISI) was 22.3.

Hurricane Darby will move through an environment favorable for intensification during the next 24 hours. Darby will move over water where the Sea Surface Temperatures are near 28˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane Darby is likely to continue to intensify during the 24 hours. Darby could strengthen to a major hurricane. The small size of the circulation around Hurricane Darby means that the intensity could continue to change rapidly if the environmental conditions change. If the inner end of a rainband wraps around the small core of Darby’s circulation, then an eyewall replacement cycle could cause fluctuations in intensity.

Hurricane Darby will move around the southern side of a high pressure system over the Eastern North Pacific Ocean. The high pressure system will steer Darby toward the west during the next 24 hours. On its anticipated track Hurricane Darby will move farther away from Baja California. Darby could cross into the Central Pacific Ocean later this week.

Darby Strengthens to a Hurricane Southwest of Baja California

Former Tropical Storm Darby strengthened to a hurricane over the Eastern North Pacific Ocean southwest of Baja California on Sunday evening. At 11:00 p.m. EDT on Sunday the center of Hurricane Darby was located at latitude 14.6°N and longitude 120.6°W which put it about 905 miles (1455 km) southwest of the southern tip of Baja California. Darby was moving toward the west at 17 m.p.h. (28 km/h). The maximum sustained wind speed was 75 m.p.h. (120 km/h) and and there were wind gusts to 90 m.p.h. (145 km/h). The minimum surface pressure was 993 mb.

Former Tropical Storm Darby strengthened to a hurricane on Sunday. A very small circular eye appeared intermittently on satellite images of Hurricane Darby. The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the small core of Darby’s circulation. Storms near the core generated upper level divergence that pumped mass away from the hurricane. Winds to hurricane force extended out 15 miles (25 km) in the northeastern quadrant of Hurricane Darby. Winds to tropical storm force extended out 60 miles (95 km) from the center of Darby.

Hurricane Darby will move through an environment favorable for intensification during the next 36 hours. Darby will move over water where the Sea Surface Temperatures are near 28˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane Darby is likely to continue to intensify during the 36 hours. The small size of the circulation around Hurricane Darby means that it could change intensity rapidly if the environmental conditions change. If the inner end of a rainband wraps around the small core of Darby’s circulation, then an eyewall replacement cycle could cause fluctuations in intensity.

Hurricane Darby will move around the southern side of a high pressure system over the Eastern North Pacific Ocean. The high pressure system will steer Darby toward the west during the next 36 hours. On its anticipated track Hurricane Darby will move farther away from Baja California. Darby could cross into the Central Pacific Ocean later this week.

Tropical Storm Darby Forms South of Baja California

Tropical Storm Darby formed over the Eastern North Pacific Ocean south of Baja California on Saturday. At 11:00 p.m. EDT on Saturday the center of Tropical Storm Darby was located at latitude 14.3°N and longitude 114.9°W which put it about 680 miles (1090 km) south-southwest of the southern tip of Baja California. Darby was moving toward the west at 17 m.p.h. (28 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 1004 mb.

A well defined low pressure system formed in a tropical wave located south of Baja California on Saturday and the National Hurricane Center designated the system as Tropical Storm Darby. A small, well defined center of circulation was evident on visible and infrared satellite images. Bands of showers and thunderstorms were revolving around the center of Darby. Storms near the center generated upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 35 miles (55 km) from the center of circulation.

Tropical Storm Darby will move through an environment favorable for intensification during the next 48 hours. Darby will move over water where the Sea Surface Temperatures are near 28˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Tropical Storm Darby will intensify during the 48 hours and it could strengthen to a hurricane.

Tropical Storm Darby will move around the southern side of a high pressure system over the Eastern North Pacific Ocean. The high pressure system will steer Darby toward the west during the next 48 hours. On its anticipated track Tropical Storm Darby will move farther away from Baja California.

Elsewhere over the Eastern North Pacific Ocean, the National Hurricane Center designated former Tropical Storm Bonnie as a Post Tropical Cyclone. At 5:00 p.m. EDT on Saturday the center of former Tropical Storm Bonnie was located at latitude 19.5°N and longitude 129.4°W which put it about 1275 miles (2055 km) west of the southern tip of Baja California. Bonnie was moving toward the west at 21 m.p.h. (33 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 1009 mb.

Tropical Storm Enrique Moves over Gulf of California

Tropical Storm Enrique moved over the southern Gulf of California on Tuesday evening. At 11:00 p.m. EDT on Tuesday the center of Tropical Storm Enrique was located at latitude 23.8°N and longitude 109.1°W which put it about 80 miles (130 km) northeast of Cabo San Lucas, Mexico. Enrique 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 1003 mb.

The small circulation around Tropical Storm Enrique moved over the warmer water in the southern Gulf of California on Tuesday evening. New thunderstorms formed just to the east of the center of Enrique. Downdrafts in those thunderstorms transported stronger winds to the surface and Enrique maintained tropical storm intensity. Winds to tropical storm force extended out 35 miles (55 km) in the northeastern quadrant of Enrique. Bands in the other quadrants of the circulation consisted of showers and lower clouds. The winds were blowing at less than tropical storm force in those parts of Enrique.

Tropical Storm Enrique will move through an environment that could allow it to maintain its intensity during the next few hours. Enrique will move over water in the Gulf of California where the Sea Surface Temperatures are near 28°C. It will move through an area where the upper level winds are weak and there will be little vertical wind shear. Tropical Storm Enrique is likely to weaken rapidly when the center moves over mountains in southern Baja California.

Tropical Storm Enrique will move around the southwestern part of a high pressure system over northern Mexico. The high will steer Enrique toward the northwest during the next 24 hours. On its anticipated track Tropical Storm Enrique could pass near La Paz during the middle of Wednesday. Enrique could make landfall north of La Paz later on Wednesday. Tropical Storm Enrique will bring gusty winds and isolated heavy rainfall to parts of southeastern Baja California on Wednesday.

Enrique Moves away from Cabo Corrientes, Watch Issued for Baja California

Hurricane Enrique moved slowly away from Cabo Corrientes on Monday morning and a Tropical Storm Watch was issued for a portion of the coast of southern Baja California. At 11:00 a.m. EDT on Monday the center of Hurricane Enrique was located at latitude 20.4°N and longitude 106.7°W which put it about 65 miles (105 km) west of Cabo Corrietnes, Mexico. Enrique was moving toward the north-northwest at 5 m.p.h. (8 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (165 km/h). The minimum surface pressure was 977 mb.

A Tropical Storm Watch was issued for the portion of the coast from Cabo San Lucas to Los Barriles, Mexico. A Hurricane Warning was in effect for the portion of the coast from Playa Perula to Cabo Corrientes, Mexico. A Hurricane Watch was in effect for the portion of the coast from Manzanillo to Playa Perula, Mexico. A Tropical Storm Warning was in effect for the portions of the coast from Punta San Telmo to Playa Perula and from Cabo Corrientes to Punta Mita, Mexico. A Tropical Storm Watch was in effect for the portion of the coast from Punta Mita to San Blas, Mexico.

Hurricane Enrique was moving slowly away from Cabo Corrientes on Monday morning. Enrique began to weaken as it moved away from the west coast of Mexico. Drier air was wrapping into the core of Hurricane Enrique. The thunderstorms around the eye were not as tall and breaks appeared to be developing in the eyewall. The wind speed was decreasing slowly near the center of circulation. Thunderstorms were also not as strong in the bands revolving around the core of Enrique. Winds to hurricane force extended out 20 miles (30 km) from the center of circulation. Winds to tropical storm force extended out 100 miles (160 km) from the center.

Hurricane Enrique will move through an environment that will be less favorable for a hurricane during the next several days. Enrique will move over water where the Sea Surface Temperatures are cooler. It will move into a region where there is more drier air. The upper level winds will be weak and there will be little vertical wind shear. However, a combination of cooler water and drier air is likely to cause Hurricane Enrique to weaken gradually during the next 48 hours. Enrique could weaken to a tropical storm on Tuesday.

Hurricane Enrique will move around the southwestern part of a surface high pressure system during the next several days. The high will steer Enrique toward the northwest. On its anticipated track Hurricane Enrique will move away from the west coast of Mexico. Enrique could approach the southern end of Baja California on Tuesday night. It is likely to be a tropical storm when it reaches Baja California.

Mexico Issues Hurricane Warning for Enrique

The government of Mexico issued a Hurricane Warning for a portion of the west coast of Mexico on Sunday afternoon because of the potential effects of Hurricane Enrique. At 5:00 p.m. EDT on Sunday the center of Hurricane Enrique was located at latitude 19.0°N and longitude 105.7°W which put it about 95 miles (155 km) south of Cabo Corrietnes, Mexico. Enrique was moving toward the north at 8 m.p.h. (13 km/h). The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 110 m.p.h. (175 km/h). The minimum surface pressure was 977 mb.

A Hurricane Warning was issued for the portion of the coast from Playa Perula to Cabo Corrientes, Mexico. A Hurricane Watch was in effect for the portion of the coast from Manzanillo to Play Perula, Mexico. A Tropical Storm Warning was in effect for the portions of the coast from Punta San Telmo to Playa Perula and from Cabo Corrientes to Punta Mita, Mexico. A Tropical Storm Watch was in effect for the portion of the coast from Punta Mita to San Blas, Mexico.

A small eye appeared intermittently at the center of Hurricane Enrique on visible satellite images on Sunday. High clouds from a ring of thunderstorms around the eye obscured the eye at other times. The strongest winds were occurring in the ring of storms around the eye. Bands of showers and thunderstorms were revolving around the core of Enrique. Storms near the core generated upper level divergence that pumped mass away from the hurricane. Winds to hurricane force extended out 25 miles (40 km) from the center of Hurricane Enrique. Winds to tropical storm force extended out 110 miles (175 km) from the center of circulation.

Hurricane Enrique will move through an environment that will be mostly favorable for intensification during the next 24 hours. Enrique will move over water where the Sea Surface Temperatures are near 29°C. It will move through an area where the upper level winds are weak and there will be little vertical wind shear. The circulation on the eastern side of Hurricane Enrique will draw in some drier air from over Mexico. The drier air could limit the formation of thunderstorms in the eastern half of Enrique. Hurricane Enrique could get a little stronger during the next 24 hours. However, if drier air makes it to the core of Enrique, it could weaken the hurricane.

Hurricane Enrique will move around the western side of a surface high pressure system during the next few hours. The high will steer Enrique toward the north during that time period. On its anticipated track the core of Enrique is forecast to pass just to the west of Cabo Corrientes during the first half of Monday. The core of Hurricane Enrique with the strongest winds is forecast to pass just west of the coast. However, the eastern side of Enrique will bring gusty winds and locally heavy rain to portions of Jalisco around Cabo Corrientes.

A second, smaller high pressure system is forecast to form northeast of Hurricane Enrique on Monday. The second high will steer Enrique toward the northwest on Monday. On its anticipated track Hurricane Enrique could approach the southern end of Baja California on Wednesday.

Enrique Strengthens to a Hurricane

Former Tropical Storm Enrique strengthened to a hurricane south of Mexico on Saturday morning. At 11:00 a.m. EDT on Saturday the center of Hurricane Enrique was located at latitude 17.1°N and longitude 105.3°W which put it about 230 miles (370 km) south of Cabo Corrietnes, Mexico. Enrique was moving toward the west-northwest at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 85 m.p.h. (135 km/h) and there were wind gusts to 100 m.p.h. (160 km/h). The minimum surface pressure was 982 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Zihuatanejo to Cabo Corrientes, Mexico. A Tropical Storm Watch was in effect for the portion of the coast from Cabo Corrientes to San Blas, Mexico.

The circulation around Hurricane Enrique exhibited much more organization on Saturday morning. The inner end of a rainband wrapped around the western and southern sides of the center of Enrique. Other bands of showers and thunderstorms were revolving around the core of Hurricane Enrique. Storms near the core generated upper level divergence that pumped mass away from the hurricane. Winds to hurricane force extended out 25 miles (40 km) from the center of Enrique. Winds to tropical storm force extended out 140 miles (220 km) from the center of circulation.

Hurricane Enrique will move through an environment favorable for intensification during the next 24 hours. Enrique will move over water where the Sea Surface Temperatures are near 29°C. It will move southeast of an upper level ridge centered over the southwestern U.S. The ridge will produce northeasterly winds that will blow toward the top of the tropical storm. Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. A small upper level low south of Baja California will enhance upper level divergence to the northwest of Hurricane Enrique. Enrique will intensify continue to during the next 24 hours.

Hurricane Enrique will move around the southwestern side of a surface high pressure system over Mexico. The high will steer Enrique toward the northwest during the next few days. On its anticipated track the center of Hurricane Enrique is forecast to be southwest of Cabo Corrientes by Sunday evening. Bands on the eastern side of Enrique could bring gusty winds and locally heavy rain to parts of the west coast of Mexico. Heavy rain could cause flash floods in Michoacan, Colima and Jalisco.

Tropical Storm Enrique Forms South of Mexico

Tropical Storm Enrique formed south of Mexico on Friday morning. At 5:00 a.m. EDT on Friday the center of Tropical Storm Enrique was located at latitude 15.0°N and longitude 101.7°W which put it about 325 miles (525 km) south-southeast of Manzanillo, Mexico. Enrique 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. (75 km/h). The minimum surface pressure was 1005 mb.

An area of low pressure south of Mexico strengthened on Friday morning and the National Hurricane Center designated the system as Tropical Storm Enrique. The circulation around Tropical Storm Enrique was organizing on Friday morning. Thunderstorms were developing near the center of Enrique. Storms near the center were generating upper level divergence that pumped mass away from the tropical storm. Bands of showers and thunderstorms were revolving around the center of circulation. Winds to tropical storm force extended out 70 miles (110 km) in the southeastern quadrant of Tropical Storm Enrique. The winds were blowing at less than tropical storm force in the other parts of Enrique.

Tropical Storm Enrique will move through an environment favorable for intensification during the next 48 hours. Enrique will move over water where the Sea Surface Temperatures are near 29°C. It will move southeast of an upper level ridge centered over the southwestern U.S. The ridge will produce northeasterly winds that will blow toward the top of the tropical storm. Those winds will cause some vertical wind shear, but the shear will not be strong enough to prevent intensification. Tropical Storm Enrique will intensify during the next 48 hours and it could strengthen to a hurricane during the weekend.

Tropical Storm Enrique will move around the southwestern side of a surface high pressure system over Mexico. The high will steer Enrique toward the west-northwest during the next few days. On its anticipated track the center of Tropical Storm Enrique is forecast to move parallel to the west coast of Mexico during the next 48 hours.

Tropical Storm Cristina Starts to Weaken

Tropical Storm Cristina started to weaken on Saturday.  At 5:00 p.m. EDT on Saturday the center of Tropical Storm Cristina was located at latitude 20.6°N and longitude 121.0°W which put it about 730 miles (1175 km) west of the southern tip of Baja California.  Cristina was moving toward the west at 14 m.p.h. (22 km/h).   The maximum sustained wind speed was 60 m.p.h. (95 km/h)  and there were wind gusts to 75 m.p.h. (120 km/h).  The minimum surface pressure was 999 mb.

Tropical Storm Cristina began to weaken on Saturday when it moved over cooler water.  Cristina moved over water where the Sea Surface Temperature was near 24°C.  The circulation around Tropical Storm Cristina was well organized, but the thunderstorms were not as tall,  A thin broken ring of thunderstorms surrounded the center of circulation and the strongest winds were occurring in that ring of storms.  Other bands of showers and thunderstorms were revolving around the center of circulation.  Storms near the center were still generating upper level divergence.  However, the circulation was unable to extract enough energy from the cooler water to maintain the stronger wind speeds.  Winds to tropical storm force extended out about 80 miles (130 km) from the center of circulation.

Tropical Storm Cristina will continue to weaken during the next few days when it moves over water where the Sea Surface Temperature is near 23°C.  Cristina could weaken to a tropical depression by Monday.

Tropical Storm Cristina will move south of a subtropical high pressure system over the Eastern North Pacific Ocean.  The high will steer Cristina toward the west during the next few days.  On its anticipated track Tropical Storm Cristina will move in the general direction of Hawaii while it weakens.

Tropical Storm Cristina Forms South of Acapulco

Tropical Storm Cristina formed south of Acapulco on Monday.  At 11:00 p.m. EDT on Monday the center of Tropical Storm Cristina was located at latitude 11.2°N and longitude 101.3°W which put it about 405 miles (650 km) south-southwest of Acapulco, Mexico.  Cristina was moving toward the west-northwest at 15 m.p.h. (24 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.

A distinct low pressure center organized quickly in a tropical wave south of Mexico on Monday.  Satellite images showed a well developed counterclockwise rotation around the center of circulation.  Bands of showers and thunderstorms were revolving around the center of Tropical Storm Cristina.  The inner end of a rainband wrapped around the southern and eastern sides of the center of circulation.  Storms near the center of circulation were generating upper level divergence which was pumping mass away in all directions from the tropical storm,  Winds to tropical storm force extended out about 35 miles (55 km) from the center of Cristina.

Tropical Storms Cristina will move through an environment favorable for intensification during the next several days.  Cristina will move over water where the Sea Surface Temperature is near 29.5°C.  It will move through a region where the upper level winds are weak and there will be little vertical wind shear.  Tropical Storm Cristina will continue to strengthen and it could intensify rapidly.  Cristina will intensify into a hurricane within 36 hours and it could strengthen into a major hurricane later this week.

Tropical Storm Cristina will move around the southwestern part of a ridge of high pressure over Mexico and the southwestern U.S.  The ridge will steer Cristina toward the west-northwest during the next few days.  On its anticipated track Tropical Storm Cristina will move away from the west coast of Mexico.