...The threat for flash flooding from post-tropical cyclone Andrea will
quickly diminish on Saturday...
...Severe thunderstorms will be possible over portions of the Great Plains and Midwest...
...Excessive heat warnings remain in effect across the Desert Southwest...
Heavy rains and the threat for flash flooding from what is now
post-tropical cyclone Andrea will quickly diminish over the Northeast on Saturday as the storm races northeastward along the New England coast and then out into the Atlantic. While conditions clear out in the Northeast...a weak disturbance in Andrea's wake will trigger scattered showers and thunderstorms over portions of the Mid-Atlantic region on Saturday.
Also...showers and thunderstorms will remain in the forecast across Florida...where plenty of moisture across the sunshine state could
lead to some periods of moderate to heavy rains.
Active weather is expected across the Central U.S. this weekend as an upper trough amplifies over the Great Plains and closes off over the Midwest. Widespread showers and thunderstorms will continue to break out ahead of the associated surface boundary...which will cross the Northern/Central Plains on Saturday and then head into the Middle/Upper Mississippi Valley on Sunday. Abundance amounts of moisture streaming northward out of the Gulf of Mexico should help fuel organized...and potentially severe...thunderstorms. Please refer to the Storm Prediction Center for the latest information on severe weather.
Out west...record breaking heat will continue for portions of the Desert
Southwest. Excessive heat warnings remain in effect where daytime
temperatures will soar well into triple digits...and overnight lows will
not offer much relief from the heat. Conditions should begin to cool off by the beginning of the work week as a ridge aloft slides eastward and a closed low off the California coast moves inland.