568
FXUS01 KWBC 031859
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
258 PM EDT Sun Aug 03 2025

Valid 00Z Mon Aug 04 2025 - 00Z Wed Aug 06 2025

...Heavy rain and excessive rainfall threat linger across the
Southeast near a stalled frontal boundary...

...Rounds of strong to severe thunderstorms across the
south-central High Plains through tonight and then across the
northern Plains later on Tuesday...

...Air Quality Alerts from the upper Midwest to the Great Lakes as
well as the interior Northeast...

...Extreme Heat Watches and Warnings across the Desert Southwest
and southern Arizona...

A large dome of cool air will continue to provide cooler than
normal conditions for early August from the Great Plains to much
of the eastern U.S. except New England through the next couple of
days.  The southern boundary of this cool dome will remain nearly
stationary through the next couple of days with heavy rain and a
threat of excessive rainfall especially from Florida Panhandle
northward.  As a low pressure wave develops on the stalled front,
the excessive rainfall threat is forecast to lift further inland
across the interior sections of the Southeast through Tuesday.
Scattered showers and thunderstorms will also lift gradually north
into North Carolina on Tuesday.

Meanwhile, additional rounds of strong to severe thunderstorms are
expected to impact the south-central High Plains
through tonight to the east of the stalled front that bends back
across the Great Plains.  The hazards associated with these
thunderstorms include frequent lightning, severe thunderstorm wind
gusts, hail, and occasional
tornadoes.  A marginal threat of excessive rainfall is expected up
and down the Great Plains through tonight.  By Monday, the front
is forecast to weaken, leading to a lessening threat of severe
weather and heavy rainfall.  By Tuesday, a low pressure wave
associated with an upper trough from the Pacific is expected to
trigger the next round of strong to severe storms later that day
across the northern Plains.

For the western U.S., widely-scattered thunderstorms across the
interior Pacific Northwest are forecast to become more widespread
by tonight and spreading into the northern Rockies and continue
into early Tuesday as a cold front develops and passes through the
region.  Meanwhile, Extreme Heat Watches and Warnings are in
effect for high temperatures exceeding 110 degrees across the
Desert Southwest and southern Arizona.  Over the Great Basin to
the Four Corners, elevated to critical fire weather danger is
anticipated through the next couple of days with the arrival of
the aforementioned cold front later on Monday.

Kong


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