Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
300 AM EDT Mon Oct 21 2019

Valid 12Z Mon Oct 21 2019 - 12Z Wed Oct 23 2019

...Strong storm system to bring a variety of weather impacts to the
central and eastern states...
  
A strong low pressure system will continue to intensify across the Upper
Midwest on Monday as it lifts northeastward towards Ontario by Tuesday
night.  This is expected to produce widespread rain from the eastern
Dakotas to the upper Great Lakes, with some locations receiving over an
inch of rainfall before the storm system departs.  Unlike the previous
strong surface low that hammered the northern Plains with blizzard
conditions, temperatures on the west side of the low will not be cold
enough to support any widespread snow.  There may be a small area of
rain/snow mix on the northwestern edge, but nothing significant is
currently anticipated.

Numerous showers and thunderstorms are expected farther southward towards
the Gulf Coast along and ahead of the trailing cold front.  There will be
enough instability ahead of the front across parts of the Deep South to
support the development of some strong to severe thunderstorms on Monday,
and there may be additional strong storms over the Southeast U.S. on
Tuesday.  Given the progressive nature of the storm, the flash flood
threat appears to be limited at this time.

Elsewhere across the continental U.S., heavy rain and mountain snow is
forecast across western Washington and Oregon as persistent onshore flow
coupled with a frontal passage leads to numerous showers and orographic
precipitation enhancement.  Sunny to partly cloudy conditions are expected
to continue from California to the High Plains, with below normal
temperatures across the Rockies and Plains, and slightly above normal for
the Desert Southwest.

Hamrick


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