Monthly Archives: July 2022

Bonnie Intensifies to a Major Hurricane

Hurricane Bonnie intensified to a major hurricane over the Eastern North Pacific Ocean south of Mexico on Tuesday morning. At 11:00 a.m. EDT on Tuesday the center of Hurricane Bonnie was located at latitude 15.3°N and longitude 104.3°W which put it about 250 miles (400 km) southwest of Zihuatanejo, Mexico. Bonnie was moving toward the west at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 115 m.p.h. (185 km/h) and and there were wind gusts to 135 m.p.h. (230 km/h). The minimum surface pressure was 964 mb.

Hurricane Bonnie intensified to a major hurricane southwest of Zihuatanejo on Tuesday morning. A small circular eye with a diameter of 12 miles (19 km) was present at the center of Bonnie’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 Bonnie. Storms near the core generated upper level divergence that pumped mass away from the hurricane.

The circulation around Hurricane Bonnie was small. Winds to hurricane force extended out 30 miles (50 km) from the center of Bonnie. Winds to tropical storm force extended out 115 miles (185 km) from the center. The Hurricane Intensity Index (HII) for Hurricane Bonnie was 20.6. The Hurricane Size Index (HSI) was 10.0 and the Hurricane Wind Intensity Size Index (HWISI) was 30.6.

Hurricane Bonnie will move through an environment favorable for a major hurricane during the next 24 hours. Bonnie will move over water where the Sea Surface Temperatures are near 28˚C. It will move under the southern side of an upper level ridge over the Eastern North Pacific Ocean. The ridge will produce northeasterly winds that will blow toward the top of Bonnie’s circulation. Those winds will cause some vertical wind shear. The wind shear will inhibit intensification, but Hurricane Bonnie could strengthen a little more during the next 24 hours.

Hurricane Bonnie will move south of a high pressure system over Mexico. The high pressure system will steer Bonnie toward the west-northwest during the next 24 hours. On its anticipated track Hurricane Bonnie will more farther to the southwest of the coast of Mexico.

Hurricane Bonnie Strengthens to Cat. 2

Hurricane Bonnie strengthened to Category 2 on the Saffir-Simpson Scale over the Eastern North Pacific Ocean south of Acapulco, Mexico on Monday afternoon. At 5:00 p.m. EDT on Monday the center of Hurricane Bonnie was located at latitude 13.9°N and longitude 100.3°W which put it about 210 miles (335 km) south of Acapulco, Mexico. Bonnie was moving toward the west at 17 m.p.h. (28 km/h). The maximum sustained wind speed was 100 m.p.h. (160 km/h) and and there were wind gusts to 120 m.p.h. (195 km/h). The minimum surface pressure was 978 mb.

Hurricane Bonnie continued to strengthen on Sunday. A small circular eye developed at the center of Bonnie’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 Bonnie. Storms near the core generated upper level divergence that pumped mass away to the west of the hurricane.

The circulation around Hurricane Bonnie was small. Winds to hurricane force extended out 25 miles (40 km) from the center of Bonnie. Winds to tropical storm force extended out 90 miles (145 km) from the center. The Hurricane Intensity Index (HII) for Hurricane Bonnie was 16.5. The Hurricane Size Index (HSI) was 7.6 and the Hurricane Wind Intensity Size Index (HWISI) was 24.1.

Hurricane Bonnie will move through an environment favorable for intensification during the next 24 hours. Bonnie will move over water where the Sea Surface Temperatures are near 28˚C. It will move under the southern side of an upper level ridge over the Eastern North Pacific Ocean. The ridge will produce northeasterly winds that will blow toward the top of Bonnie’s circulation. Those winds will cause some vertical wind shear. The wind shear will inhibit intensification, but Hurricane Bonnie could intensify during the next 24 hours. Bonnie could strengthen to a major hurricane on Tuesday.

Hurricane Bonnie will move south of a high pressure system over Mexico. The high pressure system will steer Bonnie toward the west-northwest during the next 24 hours. On its anticipated track Hurricane Bonnie will remain southwest of the coast of Mexico.

Bonnie Intensifies to a Hurricane South of Mexico

Former Tropical Storm Bonnie intensified to a hurricane over the Eastern North Pacific Ocean on Sunday night. At 11:00 p.m. EDT on Sunday the center of Hurricane Bonnie was located at latitude 13.2°N and longitude 95.5°W which put it about 210 miles (335 km) south of Salina Cruz, Mexico. Bonnie was moving toward the west-northwest at 17 m.p.h. (28 km/h). The maximum sustained wind speed was 80 m.p.h. (130 km/h) and and there were wind gusts to 95 m.p.h. (150 km/h). The minimum surface pressure was 987 mb.

A larger, ragged eye appeared at the center of Hurricane Bonnie on Sunday night. 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 core of Hurricane Bonnie. 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) in the eastern side of Bonnie’s circulation. Winds to tropical storm force extended out 80 miles (130 km) from the center of Bonnie.

Hurricane Bonnie will move through an environment favorable for intensification during the next 36 hours. Bonnie will move over water where the Sea Surface Temperatures are near 28˚C. It will move under the southern side of an upper level ridge over the Eastern North Pacific Ocean. The ridge will produce easterly winds that will blow toward the top of Bonnie’s circulation. Those winds will cause some vertical wind shear, but the shear will not be enough to prevent intensification. Hurricane Bonnie will intensify during the next 36 hours. A period of rapid intensification could occur after the ring of thunderstorms around the eye becomes fully formed. Bonnie could strengthen to a major hurricane early next week.

Tropical Storm Bonnie will move south of a high pressure system over Mexico. The high pressure system will steer Bonnie toward the west-northwest during the next 36 hours. On its anticipated track Tropical Storm Bonnie will remain south of the coast of Mexico.

Tropical Storm Bonnie Moves over Eastern North Pacific

Tropical Storm Bonnie moved over the Eastern North Pacific Ocean on Saturday. At 5:00 p.m. EDT on Saturday the center of Tropical Storm Bonnie was located at latitude 11.3°N and longitude 88.0°W which put it about 130 miles (210 km) west-southwest of Managua, Nicaragua. Bonnie was moving toward the west at 16 m.p.h. (26 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.

Tropical Storm Bonnie moved across Central America and over the Eastern North Pacific Ocean on Saturday. The center of Bonnie’s circulation moved along the border between Nicaragua and Costa Rica. Bonnie dropped heavy rain on parts of Nicaragua and Costa Rica. It took about 12 hours for Tropical Storm Bonnie to cross Central America. Bonnie’s circulation was intact when it emerged over the Eastern North Pacific Ocean. The inner end of a rainband wrapped around the center of Tropical Storm Bonnie and an eye was visible on conventional and microwave satellite images. A ring of strong thunderstorms surrounded the eye and the strongest winds were occurring in that ring of storms. Storms near the center of circulation generated upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 70 miles (110 km) from the center of Bonnie.

Tropical Storm Bonnie will move through an environment favorable for intensification during the next 36 hours. Bonnie will move over water where the Sea Surface Temperatures are near 28˚C. It will move under an upper level ridge over Central America and the Eastern North Pacific Ocean. The upper level winds are weak in the ridge and there will be little vertical wind shear. Tropical Storm Bonnie will intensify during the next 36 hours. Bonnie is likely to strengthen to a hurricane by Sunday night. A period of rapid intensification could occur. Bonnie could intensify to a major hurricane early next week.

Tropical Storm Bonnie will move south of a high pressure system over Mexico. The high pressure system will steer Bonnie toward the west-northwest during the next 36 hours. On its anticipated track Tropical Storm Bonnie will remain south of El Salvador and Guatemala.

Typhoon Chaba Hits Southern China

Typhoon Chaba hit southern China on Saturday morning. At 5:00 a.m. EDT on Saturday the center of Typhoon Chaba was located at latitude 21.5°N and longitude 111.0°E which put it about 25 miles (40 km) east of Wuchuan, China. Chaba was moving toward the north-northwest at 8 m.p.h. (13 km/h). The maximum sustained wind speed was 80 m.p.h. (130 km/h) and and there were wind gusts to 95 m.p.h. (150 km/h). The minimum surface pressure was 978 mb.

The center of Typhoon Chaba made landfall on the south coast of China near Wuchuan and Dianbai in Guangdong on Saturday morning. Typhoon Chaba was strengthening when it made landfall. A small circular eye was as the center of Chaba’s circulation. Winds to typhoon force extended out 60 miles (95 km) from the center of Chaba. Winds to tropical storm force extended out 190 miles (305 km) from the center of circulation.

Typhoon Chaba will move around the western end of a high pressure system over the Western North Pacific Ocean. The high pressure system will steer Chaba toward the north-northwest during the next 24 hours. On its anticipated track Typhoon Chaba will move inland over southern China. Chaba will weaken gradually as it moves inland. Typhoon Chaba will bring strong winds and locally heavy rain to southwestern Guangdong. Heavy rain could cause flash floods in some locations. There were reports a ship broke in two in heavy seas in the South China Sea.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Aere brought gusty winds and heavy rain to the center Ryukyu Islands. At 5:00 p.m. EDT on Saturday the center of Tropical Storm Aere was located at latitude 26.3°N and longitude 129.1°E which put it about 115 miles (185 km) east-southeast of Okinawa. Aere was moving toward the north-northwest at 17 m.p.h. (19 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 994 mb.

Tropical Storm Colin Forms on South Carolina Coast

Tropical Storm Colin formed on the coast of South Carolina on Saturday morning. At 8:00 a.m. EDT on Saturday the center of Tropical Storm Colin was located at latitude 33.6°N and longitude 79.3°W which put it about 25 miles (40 km) west-southwest of Myrtle Beach, South Carolina. Colin was moving toward the northeast at 8 m.p.h. (13 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 1012 mb.

A Tropical Storm Warning was in effect for the portion of the coast from South Santee River, South Carolina to Duck, North Carolina.

A small low pressure system dropped heavy rain over the area around Charleston, South Carolina on Friday. An area of winds to tropical storm force was detected off the coast of South Carolina on Saturday morning and the National Hurricane Center designated the system as Tropical Storm Colin. The strongest winds were occurring in bands in the eastern side of Tropical Storm Colin, which was over the Atlantic Ocean. Winds to tropical storm force extended out 70 miles (110 km) in the eastern side of Colin’s circulation. The winds over land were weaker. The heaviest rain was also falling in the bands over the Atlantic Ocean.

Tropical Storm Colin will move through an environment that is unfavorable for intensification during the next 36 hours. Although the Sea Surface Temperatures off the coast of North Carolina are near 27˚C, the center of Colin’s circulation is likely to move along the coast. An upper level trough over the eastern U.S. will produce southwesterly winds that will cause moderate vertical wind shear. Proximity to land and vertical wind shear are likely to prevent Tropical Storm Colin from strengthening during the next 36 hours.

The upper level trough will steer Tropical Storm Colin toward the northeast during the next 36 hours. On its anticipated track, the center of Tropical Storm Colin will move along the coast of North Carolina. Colin could bring gusty winds and locally heavy rain to the coast of North Carolina.

Elsewhere, Tropical Storm Bonnie was moving along the border between Nicaragua and Costa Rica. At 8:00 a.m. EDT on Saturday the center of Tropical Storm Bonnie was located at latitude 11.2°N and longitude 85.8°W which put it about 65 miles (105 km) southeast of Managua, Nicaragua. Bonnie was moving toward the west at 14 m.p.h. (22 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 1002 mb. Tropical Storm Bonnie will move over the Eastern North Pacific Ocean in a few hours.

A Tropical Storm Warning was in effect for the portion of the Caribbean coast from Limon, Costa Rica to Sandy Bay Sirpi, Nicaragua. A Tropical Storm Warning was also in effect for the portion of the Pacific coast from Cabo Blanco, Costa Rica to the border between Nicaragua and Honduras.

Tropical Storm Bonnie Hits Nicaragua and Costa Rica

Tropical Storm Bonnie hit southern Nicaragua and northern Costa Rica on Friday night. At 11:00 p.m. EDT on Friday the center of Tropical Storm Bonnie was located at latitude 10.9°N and longitude 83.8°W which put it about 75 miles (120 km) south of Bluefields, Nicaragua. Bonnie was moving toward the west at 16 m.p.h. (26 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 995 mb.

A Tropical Storm Warning was in effect for the portion of the Caribbean coast from Limon, Costa Rica to Sandy Bay Sirpi, Nicaragua. A Tropical Storm Warning was also in effect for the portion of the Pacific coast from Cabo Blanco, Costa Rica to the border between Nicaragua and Honduras.

The center of Tropical Storm Bonnie made landfall on the Caribbean coast near the border between Nicaragua and Costa Rica on Friday night. Bonnie was beginning to strengthen rapidly just prior to landfall. A reconnaissance plane reported an eye with a diameter of 12 miles (19 km) had developed at the center of Tropical Storm Bonnie. The eye was surrounded by a ring of strong thunderstorms and the strongest winds were occurring in that ring of storms. Winds to tropical storm force extended out 115 miles (185 km) on the northern side of Bonnie’s circulation. Winds to tropical storm force extended out 20 miles (30 km) on the southern side of Tropical Storm Bonnie.

Tropical Storm Bonnie will move south of the western part of a high pressure system over the western Atlantic Ocean and the Caribbean Sea. The high pressure system will steer Bonnie toward the west during the next 24 hours. On its anticipated track Tropical Storm Bonnie will move along the border between Nicaragua and Costa Rica. Bonnie will bring gusty winds and locally heavy rain to southern Nicaragua and northern Costa Rica. Heavy rain could cause flash floods and mudslides in some locations. Bonnie will move over the Eastern North Pacific Ocean on Saturday.

Tropical Storm Bonnie will weaken while it moves over land. Mountains are likely to disrupt the low level circulation and to cause the developing eye and eyewall to dissipate. Bonnie will move over water where the Sea Surface Temperatures are near 28˚C when it moves over the Eastern North Pacific Ocean. Bonnie is forecast to strengthen back to a tropical storm when it moves over the Eastern North Pacific Ocean and it could intensify to a hurricane in a couple of days.

Chaba Strengthens to a Typhoon Northeast of Hainan

Former Tropical Storm Chaba strengthened to a typhoon northeast of Hainan Island on Friday afternoon. At 5:00 p.m. EDT on Friday the center of Typhoon Chaba was located at latitude 20.4°N and longitude 111.8°E which put it about 100 miles (160 km) southeast of Wuchuan, China. Chaba was moving toward the northwest at 12 m.p.h. (19 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 981 mb.

Former Tropical Storm Chaba strengthened to a typhoon over the warm water in the northern South China Sea on Friday afternoon. The inner end of a rainband wrapped around the center of Typhoon Chaba’s circulation and the strongest winds were occurring in a ring around the center. Bands of showers and thunderstorms were revolving around the core of Typhoon Chaba. Storms near the core generated upper level divergence that pumped mass away from the typhoon. Winds to typhoon force extended out 60 miles (95 km) from the center of Chaba. Winds to tropical storm force extended out 180 miles (290 km) from the center of circulation.

Typhoon Chaba will move through an environment favorable for intensification during the next 12 hours. Chaba will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the middle of an upper level ridge over the northern part of the South China Sea. The upper level winds are weak near the center of the ridge and there will be little vertical wind shear. Typhoon Chaba could continue to intensify during the next 12 hours.

Typhoon Chaba will move around the western end of a high pressure system over the Western North Pacific Ocean during the next 24 hours. The high will steer Chaba toward the northwest. On its anticipated track the center of Typhoon Chaba could make landfall on the coast of southern China near Wuchuan in 12 hours. Chaba will bring strong winds and locally heavy rain to southwestern Guangdong. Heavy rain is likely to cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Aere intensified gradually southeast of Okinawa. At 5:00 p.m. EDT on Friday the center of Tropical Storm Aere was located at latitude 23.6°N and longitude 130.4°E which put it about 305 miles (495 km) southeast of Okinawa. Aere was moving toward the north-northwest at 12 m.p.h. (19 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 994 mb. Tropical Storm Aere is forecast to move toward the north-northwest and to continue to strengthen gradually. Aere could be near Okinawa in 18 hours.

Tropical Storm Bonnie Forms over Southwest Caribbean Sea

Tropical Storm Bonnie formed over the Southwestern Caribbean Sea on Friday morning. At 11:00 a.m. EDT on Friday the center of Tropical Storm Bonnie was located at latitude 11.2°N and longitude 81.9°W which put it about 195 miles (315 km) east-southeast of Bluefields, Nicaragua. Bonnie was moving toward the west at 20 m.p.h. (32 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.

A Tropical Storm Warning was in effect for San Andres Island, Colombia. A Tropical Storm Warning was in effect for the portion of the Caribbean coast from Limon, Costa Rica to Sandy Bay Sirpi, Nicaragua. A Tropical Storm Warning was also in effect for the portion of the Pacific coast from Cabo Blanco, Costa Rica to the border between Nicaragua and Honduras.

A U.S. Air Force Reserve Hurricane Hunter reconnaissance aircraft found westerly winds in the southwestern part of former Potential Tropical Cyclone Two on Friday morning. Based on data from the reconnaissance plane, the National Hurricane Center designated the system as Tropical Storm Bonnie. More thunderstorms formed in bands revolving around the center of Tropical Storm Bonnie. Storms near the center of Bonnie generated upper level divergence that pumped mass away from the tropical storm. Winds to tropical storm force extended out 100 miles (160 km) in the northern side of Bonnie’s circulation. Winds in the southern side of Tropical Storm Bonnie were blowing at less than tropical storm force.

Tropical Storm Bonnie will move through an environment favorable for intensification during the next 12 hours. Bonnie will move over water where the Sea Surface Temperatures are near 28˚C. It will be under an upper level ridge over the Southwestern Caribbean Sea. The upper level winds are weak in the ridge and there will be little vertical wind shear. Tropical Storm Bonnie will strengthen during the next 12 hours. Bonnie will weaken when it moves over Nicaragua and Costa Rica, but it could strengthen again over the Eastern North Pacific Ocean on Saturday.

Tropical Storm Bonnie will move south of the western part of a high pressure system over the western Atlantic Ocean and the Caribbean Sea. The high pressure system will steer Bonnie toward the west during the next 24 hours. On its anticipated track Tropical Storm Bonnie will hit southern Nicaragua and northern Costa Rica on Friday night. Bonnie will bring gusty winds and locally heavy rain to southern Nicaragua and northern Costa Rica. Heavy rain could cause flash floods and mudslides in some locations.

Tropical Storm Chaba Strengthens South of Hong Kong

Tropical Storm Chaba strengthened over the South China Sea south of Hong Kong on Thursday night. At 11:00 p.m. EDT on Thursday the center of Tropical Storm Chaba was located at latitude 18.6°N and longitude 113.7°E which put it about 275 miles (445 km) south of Hong Kong, China. Chaba was moving toward the northwest at 10 m.p.h. (16 km/h). The maximum sustained wind speed was 60 m.p.h. (95 km/h) and and there were wind gusts to 75 m.p.h. (120 km/h). The minimum surface pressure was 991 mb.

Tropical Storm Chaba strengthened south of Hong Kong on Thursday night. The inner end of a rainband wrapped around most of the center of circulation. The strongest winds were occurring in the part of the rainband wrapped around the center. Bands of thunderstorms were occurring in the southern half of Chaba’s circulation. Bands in the northern half of Chaba contained more showers and lower clouds. Storms near the center of circulation pumped mass away to the south and west of the tropical storm. Winds to tropical storm force extended out 140 miles (225 km) from the center.

Tropical Storm Chaba will move through an environment favorable for intensification during the 24 hours. Chaba will move over water where the Sea Surface Temperatures are near 29˚C. It will move under the middle of an upper level ridge over the northern part of the South China Sea. The upper level winds are weak near the center of the ridge and there will be little vertical wind shear. Tropical Storm Chaba will continue to intensify during the next 24 hours and it could strengthen to a typhoon.

Tropical Storm Chaba will move around the western end of a high pressure system over the Western North Pacific Ocean during the next 24 hours. The high will steer Chaba toward the northwest. On its anticipated track the center of Tropical Storm Chaba could be near the northeastern part of Hainan Island in 18 hours. Chaba could approach the coast of southern China near Zhanjiang in 24 hours. Chaba could be a typhoon when it approaches southern China. It will bring strong winds and locally heavy rain. Heavy rain is likely to cause flash floods in some locations.

Elsewhere over the Western North Pacific Ocean, Tropical Storm Aere formed south-southeast of Okinawa. At 11:00 p.m. EDT on Thursday the center of Tropical Storm Aere was located at latitude 20.8°N and longitude 130.8°E which put it about 470 miles (760 km) south-southeast of Okinawa. Aere was moving toward the east-northeast at 9 m.p.h. (15 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 1000 mb. Tropical Storm Aere is forecast to move toward the north-northwest and to strengthen gradually. Aere could be near Okinawa in 36 hours.