Tag Archives: Potential Tropical Cyclone Four

Tropical Storm Warnings and Watches Issued for Florida

The potential threat posed by a tropical wave over eastern Cuba prompted the issuance of Tropical Storm Warnings and Watches for parts of Florida.  The U.S. National Hurricane Center designated the tropical wave as Potential Tropical Cyclone Four in order to issue the watches and warnings.  The tropical wave was previous designated as Invest 97L.

At 11:00 a.m. EDT on Friday the center of Potential Tropical Cyclone Four was located at latitude 20.9°N and longitude 76.6°W which put the center about 90 miles (145 km) east-southeast of Camaguey, Cuba and about 420 miles (675 km) southeast of Key West, Florida.  The tropical wave was moving toward the west-northwest at 16 m.p.h. (26 km/h).  The maximum sustained wind speed was 30 m.p.h. (50 km/h) and there were wind gusts to 40 m.p.h. (65 km/h).  The minimum surface pressure was 1012 mb.

A Tropical Storm Warning was in effect for the portion of the coast from East Cape Sable to Bonita Beach, Florida.

A Tropical Storm Watch was in effect for the Florida Keys from south of Card Sound Bridge.  A Tropical Storm Watch was in effect for the portion of the coast from East Cape Sable to Card Sound Bridge, Florida.  A Tropical Storm Watch was in effect for the portion of the coast from Bonita Beach to Aripeka,, Florida. 

The tropical wave currently designated as Potential Tropical Cyclone Four will move into an environment favorable for the formation of a tropical cyclone during the next 24 hours.  Potential Tropical Cyclone Four will move over water where the Sea Surface Temperatures are near 30°C.  It will move under the southeastern part of an upper level ridge over the southeastern U.S.  The ridge will produce northeasterly winds that will blow toward the top of the tropical wave.  The winds in the lower levels of the atmosphere will also blow from the east and there will be little vertical wind shear.  The tropical wave is unlikely to develop into a tropical cyclone as long as the center of the wave is over Cuba.  A tropical depression or a tropical storm is likely to form on Saturday when Potential Tropical Cyclone Four moves north of Cuba.  The system could strengthen to a tropical storm over the eastern Gulf of Mexico.

The tropical wave is moving around the southwestern part of a high pressure system over the western Atlantic Ocean.  The high pressure system will steer Potential Tropical Cyclone Four toward the northwest during the next 24 hours.  On its anticipated track, the tropical wave will move toward the Florida Keys.  Potential Tropical Cyclone Four is likely to move toward the north during the weekend when it reaches the western end of the high pressure system.

Potential Tropical Cyclone Four is likely to bring gusty winds and locally heavy rain to Florida during the weekend.  Heavy rain could cause widespread flooding.  Potential Tropical Cyclone Four could also cause a storm surge along the west coast of Florida.

Potential Tropical Cyclone Four Brings Rain to Northeast Mexico

A tropical wave designated as Potential Tropical Cyclone Four brought rain to northeastern Mexico on Saturday night. At 11:00 p.m. EDT on Saturday the center of Potential Tropical Cyclone Four was located at latitude 25.3°N and longitude 97.9°W which put it about 60 miles (95 km) southwest of the Mouth of the Rio Grande River. Potential Tropical Cyclone Four was moving toward the northwest at 13 m.p.h. (20 km/h). The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h). The minimum surface pressure was 1010 mb.

A tropical wave designated as Potential Tropical Cyclone Four moved inland over northeastern Mexico during Saturday night. A center of circulation never formed in the lower levels of the of the tropical wave and so it never developed into a tropical depression or a tropical storm. The tropical wave will move northwest over the Lower Rio Grande Valley on Sunday. Thunderstorms in the tropical wave could drop locally heavy rain over northeastern Mexico and South Texas. Some places could receive 3 to 5 inches (75 to 125 mm) of rain. The heavy rain could cause flash floods in some locations.

Potential Tropical Cyclone Four Prompts Tropical Storm Warnings for Texas and Mexico

A weather system over the southwestern Gulf of Mexico was designated as Potential Tropical Cyclone Four on Friday afternoon and Tropical Storm Warnings were issued for portions of the coasts of Texas and Mexico. At 5:00 p.m. EDT on Friday the center of Potential Tropical Cyclone Four was located at latitude 20.7°N and longitude 94.5°W which put it about 400 miles (640 km) south-southeast of the Mouth of the Rio Grande River. Potential Tropical Cyclone Four was moving toward the northwest at 14 m.p.h. (22 km/h). The maximum sustained wind speed was 35 m.p.h. (55 km/h) and there were wind gusts to 45 m.p.h. (75 km/h). The minimum surface pressure was 1009 mb.

A Tropical Cyclone Warning was issued for the portion of the coast from Port Mansfield, Texas to Boca de Catan, Mexico.

A weather system over the southwestern Gulf of Mexico exhibited more organization on Friday. However, observations from a U.S. Air Force Reserve Hurricane Hunter plane on Friday afternoon indicated that there was not a well defined center of low level circulation in the weather system. The National Hurricane Center designated the system as Potential Tropical Cyclone Four in order to issue a Tropical Storm Warning for the coast of South Texas. The government of Mexico also issued a Tropical Storm Warning for the northern coast of Mexico.

More thunderstorms developed in Potential Tropical Cyclone Four on Friday afternoon. Some of the thunderstorms in the eastern half of the circulation appeared to be organizing into bands. The thunderstorms in Potential Tropical Cyclone Four began to generate upper level divergence that pumped mass away from the weather system.

Potential Tropical Cyclone Four will move through an environment favorable for intensification during the next 18 hours. Potential Tropical Cyclone Four will move over water where the Sea Surface Temperatures are 30˚C. It will move under an upper level ridge over the southwestern Gulf of Mexico. The upper level winds are weak in that region and there will be little vertical wind shear. Potential Tropical Cyclone Four is likely to intensify during the next 18 hours. A well defined low level center of circulation will have to develop in order for the system to become a tropical storm.

Potential Tropical Cyclone Four will move around the southwestern part of a subtropical high pressure system that extends over the Gulf of Mexico. The high pressure system will steer Potential Tropical Cyclone Four toward the northwest during the next 24 hours. On its anticipated track Potential Tropical Cyclone Four will make landfall south of Brownsville, Texas during Saturday night. It will bring locally heavy rain and gusty winds to South Texas and northern Mexico. Locally heavy rain could cause flash floods in some locations.