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