The atmosphere is becoming unsettled thanks to some deep tropical moisture set to move in later today and stick around through the rest of the week. Here is the setup, we have an upper-level low pressure sitting over the Gulf of Mexico, then we have a plume of tropical moisture over the Caribbean. Where the upper-level low  is located it will provide as the steering mechanism to push the tropical moisture from the Caribbean into South Florida. This will be a slow process as all of these weather elements are expected to lift slowly north -northwest in the next few days. This will continue to keep South Florida under a soggy set up.  The models pull some strong storms possible over the next few days with very heavy rainfall that could cause street flooding. Keep those umbrella's handy you may need them.

 

Tropics Update:

The National Hurricane Center is watching the area in the Caribbean for possible tropical cyclone development. They are giving this area a 10% chance of development as it moves towards the northwest. The large area of clouds and showers over the Caribbean Sea is associated with a surface trough although upper-level conditions are nor favorable for development. Areas of heavy rainfall are likely during the next few days over the Cayman Islands, Cuba, The Bahamas and South Florida.

The other area we are following is located in the Atlantic 440 miles southeast of Halifax, NS. This non-tropical low pressure system has a 50% chance of becoming a tropical cyclone before it encounters cooler waters and more stable atmospheric conditions. If or when this system may develop it will continue to push away from the U.S.

 

While we are dealing with the possibility of showers & storms most of the week the mid-Atlantic and the Northeast will be dealing with a heat wave.As an area of high pressure shifts eastward today and towards the mid-Atlantic and the Northeast into Wednesday, heat will arrive in places that are not used to these high thermometer readings. Forecast models show cities as far north as Boston and Syracuse are forecast to break the 90-degree mark on Wednesday. Pittsburgh, New York City, Philadelphia and Baltimore among others along the I-95 corridor are also expected to receive a HOT welcome to summer. Wednesday which marks the first official day of Summer will feature the first 90-degree reading of the year for many cities in the northeast.Then on Thursday the forecast shows, 90-degree readings will persist in the same region for the first full day of summer. Unfortunately, Its not just the the high temperatures in the mid-Atlantic and Northeast will have to deal with, it will also be accompanied by high humidity due to the southerly wind flow they will have.

 

Julie Durda

Wsvn Morning Meteorologist

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