Muifa Intensifies to a Typhoon

Former Tropical Storm Muifa intensified to a typhoon over the Western North Pacific Ocean south of the Ryukyu Islands on Friday night. At 11:00 p.m. EDT on Friday the center of Typhoon Muifa was located at latitude 20.9°N and longitude 125.8°E which put it about 260 miles (420 km) south-southeast of Ishigaki, Japan. Muifa was moving toward the northwest at 9 m.p.h. (15 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. (150 km/h). The minimum surface pressure was 976 mb.

Former Tropical Storm Muifa strengthened over the warm water in the Western North Pacific Ocean on Friday and it intensified to a typhoon south of the southern Ryukyu Islands. The inner end of a rainband wrapped around the western and southern sides of the center of circulation. A small eye appeared to be developing at the center of Typhoon Muifa. Bands of showers and thunderstorms were revolving around the core of Muifa’s circulation. Storms near the core generated upper level divergence that pumped mass away from the typhoon. Winds to typhoon force extend out 25 miles (40 km) from the center of Muifa. Winds to tropical storm force extended out 100 miles (160 km) from the center of circulation.

Typhoon Muifa will move through an environment favorable for intensification during the next 36 hours. Muifa will move over water where the Sea Surface Temperatures are near 30˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Typhoon Muifa will intensify during the next 36 hours and it could strengthen to the equivalent of a major hurricane.

Typhoon Muifa will move around the southwestern part of a high pressure system over the Western North Pacific Ocean. The high pressure system will steer Muifa toward the northwest during the next 36 hours. On its anticipated track Typhoon Muifa could be south of Ishigakijima in 36 hours. Muifa could be the equivalent of a major hurricane when it approaches the southern Ryukyu Islands.

Tropical Storm Kay Brings Rain to Southern California

Tropical Storm Kay brought rain to parts of southern California. At 2:00 p.m. EDT on Friday the center of Tropical Storm Kay was located at latitude 30.7°N and longitude 117.2°W which put it about 140 miles (225 km) south of San Diego, California. Kay was moving toward the northwest at 13 m.p.h. (20 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 992 mb.

A Tropical Storm Warning was in effect for the portion of the coast from Punta Eugenia, Mexico to the border with the U.S. A Tropical Storm Warning was also in effect for the portion of the coast from Bahia De Los Angeles to Puerto Libertad, Mexico.

Rainbands in the northern side of Tropical Storm Kay dropped rain over parts of southern California. Heavy rain was also falling over parts of northwestern Mexico and there were reports of flash floods in that region. The center of Tropical Storm Kay was over the Eastern North Pacific Ocean south of San Diego. Bands of showers and thunderstorms were revolving around the center of Kay’s circulation. Winds to tropical storm force extended out 200 miles (320 km) from the center of circulation. The strongest winds were occurring over the Eastern North Pacific and the Gulf of California. Strong wind gusts were also reported in mountains in northwestern Mexico and southern California.

Tropical Storm Kay will continue to weaken gradually. Kay will move over water where the Sea Surface Temperatures are near 22˚C. As Tropical Storm Kay weakens, the clouds will not rise as high in the atmosphere and Kay will be steered by the winds closer to the surface. Those winds will steer Tropical Storm Kay toward the west during the next 36 hours. The rain over southern California will diminish during the weekend as Kay moves westward and weakens.

Hurricane Earl Passes Southeast of Bermuda

Hurricane Earl passed southeast of Bermuda on Thursday night. At 11:00 p.m. EDT on Thursday the center of Hurricane Earl was located at latitude 31.3°N and longitude 63.7°W which put it about 95 miles (150 km) southeast of Bermuda. Earl was moving toward the north-northeast at 15 m.p.h. (24 km/h). The maximum sustained wind speed was 90 m.p.h. (145 km/h) and there were wind gusts to 105 m.p.h. (165 km/h). The minimum surface pressure was 964 mb.

A Tropical Storm Warning was in effect for Bermuda.

Hurricane Earl was producing winds to nearly tropical storm force in Bermuda. The L.F. Wade International Airport reported a sustained wind speed of 36 m.p.h. (58 km/h) and a wind gust of 50 m.p.h. (80 km/h). The structure of Hurricane Earl was beginning to resemble a hurricane that was moving from the tropics into the middle latitudes. An eye with a diameter of 60 miles (95 km) was at the center of Earl’s circulation. The eye was surrounded by a broken ring of thunderstorms and the strongest winds were occurring in that ring of storms. Bands of showers and thunderstorms were revolving around the large core of Hurricane Earl. Storms near the core generated upper level divergence that pumped mass away from the hurricane. Winds to hurricane force extended out 60 miles (95 km) from the center of Earl’s circulation. Winds to tropical storm force extended out 185 miles (295 km) from the center of circulation.

Hurricane Earl will move through an environment somewhat favorable for intensification during the next 24 hours. Earl will move over water where the Sea Surface Temperatures are near 29˚C. An upper level trough near the East Coast of the U.S. will produce southwesterly winds that will blow toward the top of Earl’s circulation. Those winds will cause some vertical wind shear and the wind shear will inhibit intensification. The southwesterly winds could also enhance divergence to the northeast of Hurricane Earl. Earl could intensify on Friday if the effect of the enhanced divergence exceeds the effect of the vertical wind shear. The southwesterly winds are forecast to increase during the weekend when the upper level trough moves closer to Hurricane Earl. Stronger vertical wind shear will cause Earl to weaken and to make a transition to an extratropical cyclone.

The upper level trough near the East Coast of the U.S. will steer Hurricane Earl toward the northeast during the next 36 hours. On its anticipated track, Hurricane Earl will move away from Bermuda on Friday. The gusty winds and rain in Bermuda will diminish on Friday when Earl moves farther away.

Hurricane Kay Hits Baja California

Hurricane Kay hit Baja California on Thursday afternoon. At 5:00 p.m. EDT on Thursday the center of Hurricane Kay was located at latitude 27.1°N and longitude 114.3°W which put it about 70 miles (110 km) southeast of Punte Eugenia, Mexico. Kay was moving toward the north-northwest at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h). The minimum surface pressure was 982 mb.

A Hurricane Warning was in effect for the portion of the coast from Punta Abreojos to San Jose De Las Palomas, Mexico. A Hurricane Watch was in effect for the portion of the coast from Puerto Cortes to Punta Abreojos, Mexico. A Tropical Storm Warning was in effect for the portion of the coast from San Jose De Las Palomas, Mexico to the border with the U.S. A Tropical Storm Warning was in effect for the portion of the coast from Punta Abreojos to Puerto Cortes, Mexico. A Tropical Storm Warning was also in effect for the portion of the coast from San Evaristo to Guaymas, Mexico.

The center of Hurricane Kay made landfall on the west coast of Baja California southeast of Punta Eugenia on Thursday afternoon. Kay weakened slowly as it approached the west coast of Baja California. Winds to hurricane force extended out 35 miles (55 km) in the northeastern quadrant of Hurricane Kay. Winds to tropical storm force extended out 220 miles (350 km) from the center of Kay’s circulation. Bands in the eastern side of Hurricane Kay dropped heavy rain over parts of Baja California and there were reports of flash floods in some locations.

Hurricane Kay will continue to move toward the north-northwest during the next 24 hours. The center of Hurricane Kay will be over land during the next few hours before it moves back over water when the center gets north of Punta Eugenia. Kay will weaken steadily during the next 24 hours. The eastern half of Kay’s circulation will be flowing over Baja California, where the mountains will disrupt the flow of air. Hurricane Kay will move over water where the Sea Surface Temperatures are near 23˚C. Kay will continue to produce gusty winds and locally heavy rain over Baja California as it moves northwards.

Clouds in the rainbands will not rise as high into the atmosphere when Hurricane Kay weakens. Kay will be steered by winds closer to the surface on Friday. The winds in the lower levels of the atmosphere will steer Kay more toward the northwest on Friday. On its anticipated track, the center of Kay will be southeast of San Diego, California on Friday night. Kay could be a tropical storm when it is southeast of San Diego. Bands in the eastern side of Kay could bring gusty winds and locally heavy rain to parts of southern California and western Arizona. A High Wind Watch is in effect for parts of southern California. Flood Watches are in effect for parts of southern California and western Arizona.

Tropical Storm Muifa Forms Southeast of the Ryukyu Islands

Tropical Storm Muifa formed over the Western North Pacific Ocean southeast of the Ryukyu Islands on Wednesday night. At 11:00 p.m. EDT on Wednesday the center of Tropical Storm Muifa was located at latitude 17.2°N and longitude 132.6°E which put it about 730 miles (1175 km) south-southeast of Okinawa. Muifa was moving toward the west at 8 m.p.h. (13 km/h). The maximum sustained wind speed was 45 m.p.h. (75 km/h) and there were wind gusts to 60 m.p.h. (95 km/h). The minimum surface pressure was 997 mb.

The circulation around a low pressure system southeast of the Ryukyu Islands exhibited more organization on Wednesday night and the Japan Meteorological Agency designated the system as Tropical Storm Muifa. The distribution of thunderstorms around Tropical Storm Muifa was asymmetrical. Most of the thunderstorms were occurring in bands in the western side of Muifa’s circulation. Bands in the eastern side of Muifa consisted primarily of showers and lower clouds. Storms west of the center of circulation generated upper level divergence that pumped mass away to the west of the tropical storm. Winds to tropical storm force extended out 100 miles (160 km) from the center of circulation.

Tropical Storm Muifa will move through an environment favorable for intensification during the next 24 hours. Muifa will move over water where the Sea Surface Temperatures are near 30˚C. It will move under the southern part of an upper level ridge over the Western North Pacific Ocean. The ridge will produce easterly winds that will blow toward the top of Muifa’s circulation. Those winds will cause some vertical wind shear, but the wind shear will not be strong enough to prevent intensification. Tropical Storm Muifa will intensify during the next 48 hours. Muifa could strengthen to a typhoon in 24 hours. Muifa could intensify to the equivalent of a major hurricane in 48 hours.

Tropical Storm Muifa will move around the southwestern part of a high pressure system over the Western North Pacific Ocean. The high pressure system will steer Muifa toward the northwest during the next 48 hours. On its anticipated track Tropical Storm Muifa could approach the southern Ryukyu Islands in 72 hours. Muifa is likely to be a typhoon when it approaches the southern Ryukyu Islands.

Bermuda Issues Hurricane Watch for Hurricane Earl

The government of Bermuda issued a Hurricane Watch on Wednesday afternoon because of the potential effects of Hurricane Earl. At 5:00 p.m. EDT on Wednesday the center of Hurricane Earl was located at latitude 26.5°N and longitude 65.5°W which put it about 405 miles (650 km) south of Bermuda. Earl was moving toward the north at 8 m.p.h. (13 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 974 mb.

A Hurricane Watch was in effect for Bermuda. A Tropical Storm Warning was also in effect for Bermuda.

Hurricane Earl exhibited more organization on Thursday afternoon. An circular eye with a diameter of 18 miles (30 km) was at the center of Earl’s circulation. The eye was surrounded by a partial ring of thunderstorms. Thunderstorms surrounded the northern half of the eye. Bands of showers and thunderstorms were revolving around the more organized core of Hurricane Earl. Storms near the center of Earl generated upper level divergence that pumped mass away from the hurricane.

The circulation around Hurricane Earl increased in size on Thursday. Winds to hurricane force extended out 45 miles (75 km) from the center of Earl’s circulation. Winds to tropical storm force extended out 150 miles (240 km) from the center. The Hurricane Intensity Index (HII) for Hurricane Earl was 12.7. The Hurricane Size Index (HSI) was 14.8 and the Hurricane Wind Intensity Size Index (HWISI) was 27.5.

Hurricane Earl will move through an environment favorable for intensification during the next 36 hours. Earl will move over water where the Sea Surface Temperatures are near 29˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane Earl will intensify during the next 36 hours. After an inner core with a fully formed eye and eyewall develops, Earl could intensify rapidly. Hurricane Earl could strengthen to a major hurricane within 36 hours.

Hurricane Earl will move around the western end of a high pressure system over the Atlantic Ocean. The high pressure system will steer Earl toward the north during the next 12 hours. An upper level trough near the East Coast of the U.S. will turn Hurricane Earl toward the northeast on Thursday. On its anticipated track, the center of Hurricane Earl will pass southeast of Bermuda on Thursday evening. Bands in the western side of Hurricane Earl could bring strong winds and locally heavy rain to Bermuda.

Elsewhere over the Atlantic Ocean, Hurricane Danielle maintained hurricane intensity northwest of the Azores. At 5:00 p.m. EDT on Wednesday the center of Hurricane Danielle was located at latitude 44.9°N and longitude 34.9°W which put it about 625 miles (1010 km) northwest of the Azores. Danielle was moving toward the northeast at 16 m.p.h. (26 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. (150 km/h). The minimum surface pressure was 972 mb.

Hurricane Kay Strengthens to Cat. 2

Hurricane Kay strengthened to Category 2 on the Saffir-Simpson Scale over the Eastern North Pacific Ocean southwest of Baja California on Wednesday morning. At 8:00 a.m. EDT on Wednesday the center of Hurricane Kay was located at latitude 20.6°N and longitude 112.3°W which put it about 220 miles (355 km) southwest of the southern tip of Baja California. Kay was moving toward the north-northwest at 12 m.p.h. (19 km/h). The maximum sustained wind speed was 100 m.p.h. (160 km/h) and there were wind gusts to 120 m.p.h. (195 km/h). The minimum surface pressure was 975 mb.

A Hurricane Warning was in effect for the portion of the coast from Punta Abreojos to San Jose De Las Palmas, Mexico. A Hurricane Watch was in effect for the portion of the coast from Punta Abreojos to Puerto Cortes, Mexico. A Tropical Storm Warning was in effect for the portion of the coast from Punta Abreojos to Bahia De Los Angeles, Mexico. The Tropical Storm Warning included Cabo San Lucas. A Tropical Storm Watch was in effect for the portion of the coast from Bahia De Los Angeles to San Felipe, Mexico. A Tropical Storm Watch was in effect for the portion of the coast from San Jose De Las Palmas to Cabo San Quintin, Mexico.

Hurricane Kay continue to strengthen on Wednesday morning. A circular eye was present at the center of Kay’s circulation. 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 core of Hurricane Kay. Storms near the core generated upper level divergence that pumped mass away from the hurricane in all directions.

The circulation around Hurricane Kay was large. Winds to hurricane force extended out 30 miles (50 km) from the center of Kay’s circulation. Winds to tropical storm force extended out 230 miles (370 km) from the center. The Hurricane Intensity Index (HII) for Hurricane Kay was 16.5. The Hurricane Size Index (HSI) was 11.3 and the Hurricane Wind Intensity Size Index (HWISI) was 27.8. Kay was capable of causing regional serious damage.

Hurricane Kay will move through an environment favorable for intensification during the next 18 hours. Kay 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 wind shear. Hurricane Kay will intensify during the next 18 hours. Kay could strengthen to a major hurricane.

Hurricane Kay will move around the southwestern part of a high pressure system over Mexico. The high pressure system will steer Kay toward the north-northwest during the next 24 hours. On its anticipated track, Hurricane Kay will approach the west coast of Baja California south of Punta Eugenia on Thursday morning. Kay will bring strong winds to the portion of the coast near Punta Eugenia. Bands on the eastern side of Hurricane Kay will drop locally heavy rain over much of Baja California. Heavy rain is likely to cause flash floods in some locations. Widespread outages of electricity could occur in Baja California.

Kay Causes Hurricane Watch for Baja California

A potential risk posed by Hurricane Kay caused the government of Mexico to issue a Hurricane Watch for a portion of the coast of Baja California. At 5:00 p.m. EDT on Tuesday the center of Hurricane Kay was located at latitude 18.8°N and longitude 111.0°W which put it about 290 miles (470 km) south-southwest of the southern tip of Baja California. Kay was moving toward the northwest at 15 m.p.h. (24 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 978 mb.

A Hurricane Watch was in effect for the portion of the coast from Puerto Cortes to Punta Eugenia, Mexico. A Tropical Storm Warning was in effect for the portion of the coast from Punta Abreojos to Santa Rosalia, Mexico. The Tropical Storm Warning included Cabo San Lucas. A Tropical Storm Watch was in effect for the portion of the coast from Santa Rosalia to Bahia De Los Angeles, Mexico. A Tropical Storm Watch was in effect for the portion of the coast from Punta Eugenia to San Jose De Las Palmas, Mexico.

Hurricane Kay strengthened slowly on Tuesday afternoon. An eye appeared intermittently at the center of Kay’s circulation. A partial ring of thunderstorms surrounded the eye. The strongest storms were in the southeastern part of the ring and that was where the strongest winds were occurring. Most of the thunderstorms were in bands in the southern half of Hurricane Kay. Bands in the northern half of the circulation consisted primarily of showers and lower clouds. Storms near the center of Kay’s circulation generated upper level divergence that pumped mass away to the south and west of the hurricane. Winds to hurricane force extended out 30 miles (50 km) from the center of Kay. Winds to tropical storm force extended out 200 miles (320 km) from the center of circulation.

Hurricane Kay will move through an environment favorable for intensification during the next 36 hours. Kay will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the southern part of an upper level ridge centered over the Southwest U.S. The upper level ridge will produce northerly winds that will blow toward the top of Kay’s circulation. Those winds will cause some vertical wind shear. The wind shear will slow the rate of intensification, but Hurricane Kay is likely to strengthen during the next 24 hours. Kay will move closer to the axis of the ridge later on Wednesday. The upper level winds are weaker near the axis of the ridge and the wind shear will decrease. Hurricane Kay will intensify faster when the wind shear decreases. Kay could strengthen to a major hurricane, when the wind shear decreases.

Hurricane Kay will move around the southwestern part of a high pressure system over Mexico. The high pressure system will steer Kay toward the north-northwest during the next 36 hours. On its anticipated track, Hurricane Kay will approach the west coast of Baja California south of Punta Eugenia on Thursday morning. Kay could bring strong winds and locally heavy rain to Baja California. Heavy rain could cause flash floods in some locations.

Tropical Storm Earl Prompts Watch for Bermuda

A potential risk posed by Tropical Storm Earl prompted the issuance of a Tropical Storm Watch for Bermuda on Tuesday afternoon. At 5:00 p.m. EDT on Tuesday the center of Tropical Storm Earl was located at latitude 24.1°N and longitude 65.8°W which put it about 570 miles (915 km) south of Bermuda. Earl was moving toward the north-northwest at 5 m.p.h. (8 km/h). The maximum sustained wind speed was 70 m.p.h. (110 km/h) and there were wind gusts to 85 m.p.h. (135 km/h). The minimum surface pressure was 994 mb.

A Tropical Storm Watch was in effect for Bermuda.

Tropical Storm Earl was close to strengthening to a hurricane on Tuesday afternoon. The inner end of a rainband wrapped around the eastern half of the center of circulation. An eye appeared to be forming at the center of Earl’s circulation. Bands of thunderstorms were located in the eastern and northern parts of Tropical Storm Earl. Bands in the southern and western parts of the circulation still consisted primarily of showers and lower clouds. Storms near the center of circulation generated upper level divergence that pumped mass away to the northeast of the tropical storm. Winds to tropical storm force extended out 125 miles (200 km) from the center of Earl.

Tropical Storm Earl will move through an environment favorable for intensification during the next 48 hours. Earl will move over water where the Sea Surface Temperatures are near 29˚C. An upper level low southwest of Bermuda will produce southwesterly winds that will blow toward the top of Earl’s circulation. Those winds will cause vertical wind shear. The wind shear will inhibit intensification, but Tropical Storm Earl could continue to intensify slowly. The upper level winds are forecast to weaken later on Wednesday, and Earl is likely to intensify to a major hurricane after that happens.

Tropical Storm Earl will move around the western end of a high pressure system over the Atlantic Ocean. The high pressure system will steer Earl toward the north during the next 48 hours. On its anticipated track, Tropical Storm Earl will approach Bermuda on Thursday afternoon. Earl will be a hurricane when it approaches Bermuda.

Elsewhere over the Atlantic Ocean, Hurricane Danielle was moving toward the east-northeast west of the Azores. At 5:00 p.m. EDT on Tuesday the center of Hurricane Danielle was located at latitude 42.5°N and longitude 40.3°W which put it about 765 miles (1230 km) west-northwest of the Azores. Danielle was moving toward the east-northeast at 7 m.p.h. (11 km/h). The maximum sustained wind speed was 75 m.p.h. (120 km/h) and there were wind gusts to 90 m.p.h. (145 km/h). The minimum surface pressure was 986 mb.

Kay Strengthens to a Hurricane Southwest of Mexico

Former Tropical Storm Kay strengthened to a hurricane over the Eastern North Pacific Ocean southwest of Mexico on Monday afternoon. At 5:00 a.m. EDT on Monday the center of Hurricane Kay was located at latitude 15.6°N and longitude 107.3°W which put it about 305 miles (495 km) southwest of Manzanillo, Mexico. Kay was moving toward the west-northwest at 10 m.p.h. (16 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. (150 km/h). The minimum surface pressure was 981 mb.

The government of Mexico issued a Tropical Storm Watch for the portion of the coast from Loreto to Puerto San Andresito.

Former Tropical Storm Kay intensified rapidly to a hurricane on Monday afternoon. The inner end of a rainband wrapped completely the center of Kay’s circulation. An eye formed at the center of Hurricane Kay. The eye was surrounded by a ring of thunderstorms and the strongest winds were occurring in that ring of storms. Other bands of showers and thunderstorms were revolving around the center of Kay’s circulation. Storms near the center of circulation generated upper level divergence that pumped mass away from the hurricane. Winds to hurricane force extended out 25 miles (40 km) in the northeastern quadrant of Hurricane Kay. Winds to tropical storm force extended out 175 miles (280 km) from the center of circulation.

Hurricane Kay will move through an environment favorable for intensification during the next 36 hours. Kay will move over water where the Sea Surface Temperatures are near 29˚C. It will move through a region where the upper level winds are weak and there will be little vertical wind shear. Hurricane Kay will intensify during the next 36 hours. Kay could strengthen to a major hurricane.

Hurricane Kay will move around the southwestern part of a high pressure system over Mexico. The high pressure system will steer Kay toward the northwest during the next 36 hours. On its anticipated track, Hurricane Kay will move parallel to the west coast of Mexico. Kay could approach Baja California on Wednesday.