National Weather Service United States Department of Commerce

Heavy Rains from the Plains to the East; Fire Weather Risk in the Desert Southwest

Thunderstorms, some severe, may produce heavy to excessive rainfall and isolated flooding over portions of the Southern Plains through Saturday. Widespread showers and thunderstorms will spread east into the Great Lakes, Ohio Valley, Mid Atlantic and Northeast. Dry conditions, combined with gusty winds will continue to support an elevated fire weather threat in the Desert Southwest. Read More >

Overview:

Based on the common patterns of the subtropical ridge, meteorologists at the National Weather Service Forecast Office in Ruskin, FL identified eight wind patterns or "Flow Regimes" and produced high resolution spatial and temporal probability of precipitation (PoP) climatologies for each across the Southeast United States, spanning the years 2002-2019.

This page defines the regimes and gives the graphics of the probability of precipitation ≥ 0.01 inch for the NWS Tampa Bay County Warning Area. Once you know what the regime number is for the day you're interested in click on the tab for that regime.
 
 
Early afternoon Cumulonimbus over southern Pinellas County in Regime 6
Early Afternoon Cumulonimbus over Pinellas County in Regime 6
 

Most images on this page can be magnified by clicking, and resized back to original size with a second click.