Talking the Tropics With Mike: Stalled weak low over NW Atlantic

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Weak nontropical low pressure remains over the N. Atlantic north & northeast of Bermuda. Convection is disorganized. This meandering low will finally be picked up by a trough of low pressure & pulled north & northeast Fri. into the weekend. No significant development is expected.

Otherwise we’re in good shape across the Atlantic Basin.

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