082
FXUS01 KWBC 022022
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
421 PM EDT Sat Aug 02 2025

Valid 00Z Sun Aug 03 2025 - 00Z Tue Aug 05 2025

...Heavy rain and excessive rainfall threat linger across the
Southeast as low pressure waves develop on a stalled frontal
boundary...

...Rounds of strong to severe thunderstorms over parts of the
northern Plains and south-central High Plains through the next
couple of days...

...Air Quality Alerts across the northern Plains/upper Midwest,
Dallas-Fort Worth, and northern New England; Fire weather hazards
from the Great Basin to the Four Corners...

...Extreme Heat Warnings across the Desert Southwest/southern
Arizona...

As a large dome of cool air provides relief to the most recent
heat wave across much of the central and eastern U.S., the leading
edge of the cool air mass will be stalled from the Gulf Coast to
just off the coast of the southeastern U.S.  Numerous showers and
thunderstorms, heavy at times, will be triggered near and to the
north of this frontal boundary through the next couple of days
especially where waves of low pressure are forecast to form.
Areas across the interior sections of the Southeast to coastal
Georgia and South Carolina should see the highest chance of heavy
rain where a few inches of rainfall with locally higher amounts
can be expected.  The threat of flash flooding will persist within
this area of heavy rain through the weekend, with the threat
possibly lessening on
Monday.  Temperatures will be cool enough to challenge low daytime
temperature records across the interior Southeast.

Meanwhile, rounds of strong to severe thunderstorms are expected
to impact portions of the northern Plains down to the
south-central High Plains through the next couple of days when
upper-level disturbances ejecting from the Rockies interact with
the same 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 threat of excessive rainfall can also be expected
within these areas, especially across the south-central Plains
through Sunday night, and portions of the northern Plains through
tonight.  Across the northern Plains to the upper Midwest, into
the Great Lakes and northern New England, poor air quality due to
smoke arriving from Canadian wildfires has continued to prompt Air
Quality Alerts for these areas.

For the western U.S., scattered thunderstorms across the interior
Pacific Northwest into the northern Rockies are forecast to become
more widespread by Sunday and into Monday as a cold front develops
and passes through the region.  Meanwhile, Extreme Heat Warnings
are in effect for high temperatures exceeding 110 degrees across
the Desert Southwest/southern Arizona.  Over the Great Basin to
the Four Corners, elevated to critical fire weather danger is
anticipated through the remainder of the weekend prior to the
arrival of the cold front later on Monday.

Kong


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