Talking the Tropics With Mike: Thankful for a quiet Atlantic Basin

No global tropical cyclones on Thanksgiving Day

Jacksonville, Fl. — The “Buresh Bottom Line”: Always be prepared!.....First Alert Hurricane Survival Guide... City of Jacksonville Preparedness Guide... Georgia Hurricane Guide.

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REMEMBER WHEN A TROPICAL STORM OR HURRICANE IS APPROACHING: Taping windows is *NOT* helpful & will not keep glass from breaking... & realize the forecast cone is the average forecast error over a given time - out to 5 days - & *does not* indicate the width of the storm &/or damage that might occur.

The last name on this season’s Atlantic list has been used. A combination of a bunch of short term storms this year (8 were “alive” for less than 48 hours) + better detection methods (satellite & radar) + less conventional (quick to pull the trigger, in other words) manner in which NHC now names storms has led to the 3rd year (in addition to 2005 & 2020) in which all names have been used up (naming storms became a “thing” in the 1950s).

It has been a quiet end to the hurricane season. According to Phil Klotzbach: “The globe has had no major (Category 3+, max winds >=111 mph) hurricane/typhoon/cyclone formations since September 25. All other hurricane seasons in the satellite era (since 1966) have had at least two global major hurricane formations between September 26 - November 19.”

An autumn upper level weather pattern continues to be well established across the N. Hemisphere & Atlantic Basin with a series of deep troughs & nontropical surface lows. The result has been a “parade” of cold fronts marching across the Atlantic penetrating deep into the Gulf & sometimes into the Caribbean.


Saharan dust. Dry air - yellow/orange/red/pink. Widespread dust is indicative 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 if everything else happens to be favorable. In my personal opinion, way too much is made about the presence of Saharan dust & how it relates to tropical cyclones.

2021 names..... “Wanda” was the last 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]). “Adria” is next. Last year - 2020 - had a record 30 named storms. The WMO decided - beginning this year - 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 three times - 2005 & 2020 & 2021). The naming of tropical cyclones began on a consistent basis in 1953. 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:

Water vapor imagery (dark blue indicates dry air):

Deep oceanic heat content over the Gulf, Caribbean & deep tropical Atlantic & remains pretty impressive late in the season from the Central/NW Caribbean into the Gulf of Mexico:

Sea surface temp. anomalies:

SE U.S. surface map:

Surface analysis centered on the tropical Atlantic:

Surface analysis of the Gulf:

Caribbean:

GFS wave forecast at 48 & 72 hours (2 & 3 days):

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

The East Pacific:

West Pacific IR satellite:

Global tropical activity:



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