682
FXUS01 KWBC 251921
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
320 PM EDT Wed Jun 25 2025

Valid 00Z Thu Jun 26 2025 - 00Z Sat Jun 28 2025

...Extremely dangerous heat persists across the Midwest and East
Coast...

...Heavy rain and flash flooding possible for portions of the
Southwest, Plains, and Upper Midwest today and Thursday...

...Severe thunderstorms possible in the Southeast, Plains, and
Upper Midwest today and in the Northern Plains on Friday...

An anomalously strong high pressure ridge remains in place over
the Eastern U.S. and is creating sweltering conditions east of the
Mississippi. Heat Advisories are in effect for portions of the
Midwest, South, Southeast, and East Coast, and Extreme Heat
Warnings are in effect for portions of the Ohio Valley and
Mid-Atlantic. Extreme heat will linger in the Ohio Valley through
the end of the work week, with high temperatures in the 90s and
lows in the 70s each day, but temperatures elsewhere should begin
to moderate by Thursday night. This level of heat can be dangerous
to anyone without effective cooling and/or adequate hydration.
Heat related illnesses increase significantly during extreme
longer duration heat. Take action when you see symptoms of heat
exhaustion and heat stroke.

In the Western and Central U.S., upper level troughing will keep
conditions cooler and support multiple days of showers and storms
for portions of the Southwest, Plains, and Upper Midwest. Moisture
will flow north along the western edge of the ridge and interact
with a frontal system draped across the Central/Northern Plains
and Midwest to create potential for isolated to scattered flash
flooding today and Thursday. Flash flooding chances will be
heightened in portions of New Mexico and West Texas near steep
terrain and burn scars. This frontal system should slowly push
east, expanding rain chances to the East Coast Friday into the
weekend.

With extremely warm, moist, unstable air in place across most of
the Central and Eastern U.S., some thunderstorm activity may
become severe. Scattered severe thunderstorms with damaging winds
are expected to develop this evening across the Southwest, Plains,
and Upper Midwest, and diurnal thunderstorms will likely become
severe this evening across the Southeast as well. Severe
thunderstorm chances will decrease on Thursday, but there may
still be isolated severe storms with strong wind gusts in portions
of the Central and Eastern U.S.. On Friday, low pressure will
strengthen along the stationary front draped over the Plains and
Northern Rockies, and this system will push east while gaining
momentum. Scattered severe thunderstorms are expected to form in
the warm sector of this system over the Northern Plains, with
large hail and locally damaging winds being the primary threats.


Dolan


Graphics available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php


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