Tag Archives: Tropical Storm Patricia

Tropical Storm Patricia Intensifies Quickly and Mexico Issues Warnings

Tropical Storm Patricia reorganized and intensified quickly on Wednesday and the government of Mexico issued warnings for portions of its west coast.  At 5:00 p.m. EDT on Wednesday the center of Tropical Storm Patricia was located at latitude 13.1°N and longitude 99.5°W, which put it about 265 miles (425 km) south of Acapulco, Mexico and about 515 miles (830 km) southeast of Manzanillo.  Patricia was moving toward the west at 16 m.p.h. (26 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 995 mb.

The government of Mexico has issued a Hurricane Warning for the portion of the coast from Cabo Corrientes to Punta San Telmo.  A Tropical Storm Warning and a Hurricane Watch has been issued for the portion of the coast from Punta San Telmo to Lazaro Cardenas.  A Tropical Storm Watch has been issued for the portion of the coast from Lazaro Cardenas to Tecpan de Galeana.

A NOAA aircraft investigated Tropical Storm Patricia on Wednesday and it found that the center of circulation had reorganized farther west of the remnants of the center that existed on Tuesday.  The new center was west of the northerly low level winds blowing out of the Gulf of Tehuantepec and it was in a more favorable environment.  Thunderstorms are developing near the center of circulation and multiple spiral bands are rotating around the center.

Patricia is moving over water where the Sea Surface Temperature is near 31°C and there is a lot of energy in the upper ocean.  The upper level winds are light and there is not much vertical wind shear.  The lack of wind shear is allowing the thunderstorms near the center to pump out mass and the surface pressure is decreasing.  Patricia will remain a favorable environment until it approaches the west coast of Mexico later this week.  Rapid intensification is likely and Patricia could intensify into a major hurricane before it reaches the coast.

A ridge over the Gulf of Mexico and Mexico is steering Patricia toward the west and that motion is expected to continue for another day or so.  After that time Patricia will reach the western end of the ridge and it will turn toward the north.  On its anticipated track Patricia could be nearing the west coast of Mexico on Friday.

 

Tropical Storm Patricia Forms South of Mexico

A center of circulation began to consolidate inside an area of thunderstorms south of the Gulf of Tehuantepec on Tuesday and the National Hurricane Center designated the system as Tropical Storm Patricia.  At 11:00 p.m. EDT on Tuesday the center of Tropical Storm Patricia was located at latitude 13.1°N and longitude 95.3°W which put it about 220 miles (355 km) south-southeast of Puerto Escondido, Mexico.  Patricia was moving toward the west-southwest 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 1004 mb.

The circulation of Tropical Storm Patricia was still organizing on Tuesday.  A cluster of thunderstorms formed northeast of the center of circulation earlier on Tuesday, but those storms weakened during recent hours.  A primary rainband extends around the western and southern side of the circulation.  However, there is not much convection northwest of the center of circulation.

Tropical Storm Patricia is over water where the Sea Surface Temperature (SST) is near 30°C.  An upper level ridge surrounds Patricia and it should produce light winds near the tropical storm.  Warm SSTs and little vertical wind shear should allow for intensification.  However, closer to the surface northerly winds blowing across the Gulf of Tehuantepec could be transporting some drier air toward the western side of the circulation.  The drier air could explain the current lack of thunderstorms in that part of Patricia.  Over time the favorable large scale environment should allow for intensification and Patricia could eventually become a hurricane.

A ridge of high pressure north of Patricia is steering the tropical storm toward the west.  That steering motion is expected to continue for another day or so.  When Patricia reaches the western end of the ridge, it will turn toward the north.  Patricia could be approaching the western coast of Mexico on Friday and it could be a hurricane at that time.