Developing Cyclone Arabian Sea / INVEST 94L Caribbean / Warm Weather Ahead

By: Dr. Jeff Masters, 6:09 PM GMT on October 25, 2014

(By Steve Gregory - Substituting for Dr. Masters who is taking the weekend off.)


A disturbance (INVEST IO90) in the Arabian Sea has been slowly developing into a Tropical Cyclone over the last few days, and appears very close to reaching Tropical Depression intensity. The developing storm is located about 600NM SE of the Oman coast, and remains quasi-stationary. Most models are showing intensi...

Hurricane Winter Weather arabian sea tropical cyclone

Updated: 7:02 PM GMT on October 25, 2014

Invest 94L in Western Caribbean Little Threat to Develop

By: Dr. Jeff Masters, 2:48 PM GMT on October 24, 2014

The remains of Tropical Depression Nine, which dissipated over Mexico's Yucatan Peninsula on Wednesday night, were moving offshore of Belize into the Western Caribbean on Friday morning. This disturbance is being labeled Invest 94L by NHC. Belize radar and satellite loops show that 94L has only a few poorly-organized clusters of heavy thunderstorms over the Yucatan Peninsula, Belize, Honduras, Guatemala, and the adjacent waters. None of our reliable models for predi...


Tropical Depression Nine Dissipates

By: Dr. Jeff Masters, 1:45 PM GMT on October 23, 2014

Small and weak Tropical Depression Nine dissipated over Mexico's Yucatan Peninsula Wednesday night, shortly after making landfall near 8 pm EDT Wednesday October 22, 2014 on the western shore of the peninsula. Mexican radar out of Sabancuy and satellite loops show that ex-TD 9 is bringing some heavy rains to the Yucatan Peninsula, Belize, Guatemala, and the adjacent waters, and this activity will continue into the weekend. By Saturday, some of the spin associated wi...


Tropical Depression Nine Forms in Gulf of Mexico

By: Dr. Jeff Masters, 1:56 PM GMT on October 22, 2014

Tropical Depression Nine has formed in the Gulf of Mexico's Bay of Campeche, and will bring dangerous heavy rains of 5 - 10 inches to Mexico's Yucatan Peninsula the next two days. Satellite loops show that TD 9 has only a small amount of heavy thunderstorms near its center, and these thunderstorms are poorly organized, due to high wind shear of 20 - 30 knots. Mexican radar out of Sabancuy showed only one spiral band associated with the storm. Dry air from Mexico flo...


Updated: 7:55 PM GMT on October 22, 2014

Gulf of Mexico's 93L a Heavy Rain Threat; Ana Leaves Hawaii Alone

By: Dr. Jeff Masters, 3:25 PM GMT on October 21, 2014

An area of low pressure over the Gulf of Mexico's Bay of Campeche (93L) contains moisture and spin from the Eastern Pacific's Tropical Storm Trudy, which made landfall near Acapulco last weekend. 93L will bring heavy rains to Mexico's Yucatan Peninsula, Western Cuba, and South Florida Wednesday through Friday. Satellite loops show the low has a moderate degree of spin and plenty of heavy thunderstorm activity, but these thunderstorms are poorly organized, due to hi...


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Jeff co-founded the Weather Underground in 1995 while working on his Ph.D. He flew with the NOAA Hurricane Hunters from 1986-1990.