Talking the Tropics With Mike: Weak upper trough of low pressure from the Bahamas to Florida

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A weak upper trough/low pressure area is over the Bahamas drifting west around the Bermuda High. No surface development is expected but there will be an uptick in heavy showers & t’storms for Florida, the Bahamas & nearby areas through Tue.

Dr. Phil Klotzbach, CSU updated his seasonal Atlantic Basin tropical cyclone forecast Thu. & did up the #’s a bit. Looks like a busy few months ahead. Always be prepared.

Saharan dust. Dry air - yellow/orange/red/pink - is extensive over the Central & Eastern Atlantic. Such widespread dust is common early in the hurricane season & is indicitive of dry air that can impede the development of tropical cyclones. However, sometimes “wanna’ be” waves will just wait until they get to the other side of the plume then try to develop.

2021 names..... “Fred” is the next name on the Atlantic list (names are picked at random by the World Meteorological Organization... repeat every 6 years... historic storms are retired (Florence & Michael in ’18... Dorian in ’19 & Laura, Eta & Iota in ‘20). Last year - 2020 - had a record 30 named storms. The WMO decided beginning in 2021 that the Greek alphabet will be no longer used & instead there will be a supplemental list of names if the first list is exhausted (has only happened twice - 2005 & 2020). More on the history of naming tropical cyclones * here *.

East Atlantic:

Mid & upper level wind shear (enemy of tropical cyclones) analysis (CIMMS). The red lines indicate strong shear which is widespread from the Gulf of Mexico & Caribbean eastward across much of the Atlantic:

Water vapor imagery (dark blue indicates dry air):

Deep oceanic heat content is slowly increasing across the SE Gulf, Caribbean & deep tropical Atlantic:

Sea surface temp. anomalies:

SE U.S. surface map:

Surface analysis centered on the tropical Atlantic:

Surface analysis of the Gulf:

Caribbean:

Atlantic Basin wave forecast for 24, 48 & 72 hours respectively:

Global tropical activity:

Cox Media Group