Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
336 AM EDT Wed Oct 19 2022

Valid 12Z Wed Oct 19 2022 - 12Z Fri Oct 21 2022

...Record breaking cold to impact the Southeast through Thursday; warm air
in Northwest spreads into Great Plains...

...Freeze warnings and frost advisories are in effect from portions of the
Southern/Central Plains to the Mid-Atlantic...

The main weather story during the short range period will be the ongoing
record cold that is impacting the southeastern quadrant of the country.
High pressure over the Plains and Mississippi Valley paired with a
departing trough off of the East Coast will keep cool northerly winds
flowing into the eastern half of the country. This cold setup will allow
for the potential for record high temperatures across the Florida
peninsula today and record lows in much of the Southeast tonight as clear
skies allow temperatures to dive to right around freezing overnight. The
frigid conditions will also warrant Freeze warnings and frost advisories
to span from the panhandle of Texas/Oklahoma to the East Coast. Many areas
in the Southeast and central Gulf Coast will likely experience their first
freeze of the season which will impact sensitive crops and livestock.

Meanwhile, the heavy rain threat in Maine should wrap up this morning as a
potent cold front providing the focus for precipitation moves into the
Canadian maritime. Farther upstream, light rain/snow showers and isolated
thunderstorms will continue over the Great Lakes today, and slowly
diminish over the next couple of days. Ridging in the Northwest will
continue the warm trend in the region today before spreading east into the
Northern Plains on Thursday. High temperatures will be 15-25 degrees above
average for many parts of the Northwest and Northern Plains over the next
two days. Warm, dry and windy conditions will warrant a critical fire
weather risk over much of central and eastern Montana on Thursday. Red
flag warnings are in effect for the Wyoming/Colorado Front Range. A new
system enters the Pacific Northwest on Friday, and brings with it the
chance for unsettled weather to the West this weekend.

Kebede

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