Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 PM EDT Sun Jul 30 2023

Valid 00Z Mon Jul 31 2023 - 00Z Wed Aug 02 2023

...Cool and fair weather will persist across the northeastern quadrant of
the country as triple-digit heat continues across the southern half of the
Plains to the eastern Gulf Coast...

...Strong to severe thunderstorms are possible over the northern High
Plains into tonight as scattered showers and thunderstorms stretch across
the north-central Plains toward the Midwest...

...Monsoonal rainfall will become more widespread across the Desert
Southwest and into the Four Corners region while dry conditions persist
over the Pacific Northwest...

During the next couple of days, a broad upper-level trough will dominate
the weather pattern across the northeastern quadrant of the country.  This
will keep a large dome of cool Canada in place across the entire area as
the cool air will continue to spread southward into the Carolinas behind a
well-defined cold front.  The front is forecast to reach the Florida
Panhandle by Tuesday morning before becoming stationary, bringing some
less humid air down into the southern Atlantic states on Monday.  On the
other hand, the cool air will not push as far south across the mid-section
of the country as triple-digit heat is forecast to continue over the
southern half of the Great Plains eastward to the eastern Gulf Coast.  To
the north of the front, relatively cool and unsettled weather is expected
to prevail across the northern Plains toward the Midwest, where rounds of
thunderstorms can be expected especially over the northern High Plains for
the next couple of days and particularly this evening.  Florida will
remain hot and humid with typical summer-time showers and thunderstorms.

Over the southwestern portion of the country, increasing southerly flow
aloft is forecast to spread monsoonal moisture farther north from the
subtropics and Mexico as a high pressure cell aloft edges eastward into
the southern Plains.  Showers and thunderstorms can be expected to become
more widespread across the Desert Southwest and into the Four Corners
region through the next couple of days.  In addition, the rain will have a
tendency to spread farther north into the central to northern Rockies as
well as the nearby High Plains on Monday, and remain in these areas into
Tuesday.  Meanwhile, dry conditions are forecast to persist over the
Pacific Northwest under the protection of an extension of the upper-level
high prior to the arrival of the next upper trough from the eastern North
Pacific.  Temperatures will be warmer than normal over the Intermountain
region into the northern Rockies and the northern Plains but near or below
normal closer to the West Coast.

Kong


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