Tag Archives: Hurricane Blas

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.

Blas Rapidly Intensifies to a Hurricane

Former Tropical Storm Blas rapidly intensified to a hurricane over the Eastern North Pacific Ocean on Wednesday morning. At 11:00 a.m. EDT on Wednesday the center of Hurricane Blas was located at latitude 14.9°N and longitude 102.8°W which put it about 300 miles (485 km) south-southeast of Manzanillo, Mexico. Blas was moving toward the west-northwest at 5 m.p.h. (8 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 988 mb.

Former Tropical Storm Blas rapidly intensified during the past 24 hours and Blas reached hurricane intensity on Wednesday morning. The inner end of a rainband wrapped around the center of Hurricane Blas and a small eye was apparent on 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 core of Hurricane Blas. Storms near the core generated upper level divergence that pumped mass away from the hurricane in all directions. The circulation around Blas was small. Hurricane force winds extended out 15 miles (25 km) from the center of circulation. Tropical storm force winds extended out 45 miles from the center.

Hurricane Blas will move through an environment favorable for intensification during the next 24 hours. Blas 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 Blas will strengthen during the next 24 hours. Blas could continue to intensify rapidly since an inner core has formed.

Hurricane Blas will move south of the western end of a high pressure system over Mexico during the next several days. The high pressure system will steer Blas toward the west-northwest. On its anticipated track Hurricane Blas will move slowly away from the west coast of Mexico during the next 24 hours.

Blas Strengthens to Cat. 4 Hurricane

Hurricane Blas strengthened rapidly Tuesday to a Category 4 hurricane on the Saffir-Simpson Scale.  At 11:00 p.m. EDT on Thursday the center of Hurricane Blas was located at latitude 14.4°N and longitude 121.7°W which put it about 970 miles (1560 km) west-southwest of the southern tip of Baja California.  Blas was moving toward the west at 13 m.p.h. (20 km/h).  The maximum sustained wind speed was 140 m.p.h. (220 km/h) and there were wind gusts to 170 m.p.h. (275 km/h).  The minimum surface pressure was 947 mb.

The Hurricane Intensity Index (HII) for Blas was 28.2.  The Hurricane Size Index (HSI) was 12.2 and the Hurricane Wind Intensity Size Index (HWISI) was 40.4.

The circulation of Hurricane Blas is fairly symmetrical and well organized, although many of the stronger thunderstorms are occurring in the southeastern quadrant.  Blas has a clear eye which is surrounded by a ring of strong thunderstorms.  Those storms generated upper level divergence which pumped out a lot of mass in all directions and allowed the pressure to decrease rapidly on Tuesday.

Hurricane Blas is in an environment that is favorable for strong hurricanes.  It is moving over water where the Sea Surface Temperature is near 29°C.  The winds in the upper levels are light and there is not much vertical wind shear.  Hurricane Blas could get stronger on Wednesday.  However, eyewall replacement cycles sometimes occur in strong hurricanes.  When an eyewall replacement cycle occurs, it can bring an end to a period of intensification.

A ridge of high pressure located north of Blas is steering the hurricane toward the west and that motion is expected to continue for several more days.  Hurricane Blas continues to move farther away from Mexico.

Blas Intensifies Into a Hurricane

Tropical Storm Blas intensified into the first Eastern North Pacific hurricane of 2016 on Monday.  At 5:00 p.m. EDT on Monday the center of Hurricane Blas was located at latitude 13.7°N and longitude 115.7°W which put it about 740 miles (1190 km) southwest of the southern tip of Baja California.  Blas was moving toward the west-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 gusts  to 90 m.p.h. (145 km/h).  The minimum surface pressure was 994 mb.

The Hurricane Intensity Index (HII) for Blas was 10.4.  The Hurricane Size Index (HSI) was 6.1.  The Hurricane Wind Intensity Size Index (HWISI) was 16.5.

The large circulation of Hurricane Blas is still organizing.  A primary rainband wrapped around the center of circulation and an eye may be forming in the center of Blas.  Additional bands of thunderstorms are spiraling around the core of Hurricane Blas.  The thunderstorms near the center of circulation are generating upper level divergence which is pumping out mass.  Despite the improved organization the wind field around Hurricane Blas is asymmetrical.  Winds to hurricane force are occurring primarily in the eastern half of the circulation.  The strongest winds extend out about 25 miles (40 km) east of the center of Hurricane Blas.  Winds to tropical storm force extend out about 150 miles (240 km) east of the center, but only about 80 miles (130 km) west of the center.

Hurricane Blas is in an environment that is favorable for further intensification.  It is moving over water where the Sea Surface Temperature is near 29°C.  An upper level ridge north of Blas is generating some northeasterly winds which are blowing over the top of the circulation.  The vertical wind shear is moderate.  It is slowing the rate of intensification, but the shear is unlikely to prevent Hurricane Blas from intensifying during the next several days.  Blas does have a chance to become a major hurricane later this week.

A ridge of high pressure is steering Hurricane Blas toward the west-northwest and that general motion is expect to continue for several more days.  Hurricane Blas is moving farther away from Mexico.