Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
323 AM EDT Sun Apr 21 2024

Valid 12Z Sun Apr 21 2024 - 12Z Tue Apr 23 2024

...Lingering showers and storms expected across the Southeast today and
Florida through Monday...

...Above average temperatures forecast throughout the Southwest, with
below average readings for most locations east of the Rockies...

Strong high pressure over the central U.S. today is set to slide eastward
by early this week and will allow for mostly tranquil weather conditions
across the Nation. A lingering frontal boundary along the Southeast will
produce additional scattered showers and thunderstorms through tonight
across the Carolinas, Georgia, and northern Florida. Rainfall amounts are
expected to remain mostly light as the activity quickly races to the east,
with rainfall chances on Monday confined to the Florida Peninsula. As the
aforementioned frontal boundary crosses central Florida to start the new
workweek, a few storms could strengthen enough to contain damaging wind
gusts and hail. The Storm Prediction Center has issued a Marginal Risk
(level 1/5) for severe weather across parts of the central and southern
Florida Peninsula in order to highlight this potential.

Outside of a few rain and snow showers across New England associated with
an approaching cold front on Sunday night, the only other areas with
notable precipitation will be linked to a low pressure system and attached
cold front stretching from the Upper Great Lakes to the central Plains
Monday night. Rainfall amounts are expected to remain meager and mostly
under a half inch through Tuesday as the system swings into Midwest and
Ohio Valley.

Temperatures across the country will remain split today, with warmth in
the Southwest and cooler than average highs across the central and eastern
United States. As high pressure weakens and slides east, a gradual warm up
can be expected east of the Rockies. The greatest turnaround is
anticipated over the southern Plains, where highs in the 60s today could
be replaced by 80s on Tuesday. Meanwhile, lows into the 20s and 30s this
morning are likely to lead to frost/freeze concerns throughout the Midwest
and parts of the Ohio Valley. Chilly morning temperatures are also
expected to linger on Monday, before cool weather erodes to the Northeast
on Tuesday with portions the Appalachians, Mid-Atlantic, and Northeast
waking up to frosty temperatures in the 30s.

Snell


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