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Regional and Mesoscale Meteorology Branch

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Genesis Climatology Root

SITE LAST UPDATED: November 10th, 2006

Monthly Climatological Tropical Cyclone Formation Probabilities

(Based on 1949-2005 Data)

Contours indicate the probability of the formation of at least one tropical cyclone over a 5 by 5 degree lat/lon area any time in each month.


12 Month Animation

January

February

March

April

May

June

July

August

September

October

November

December

Probability of One or More TC Formations by Month


Atlantic

East Pacific

Central Pacific

West Pacific