Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
355 PM EDT Mon Apr 18 2022

Valid 00Z Tue Apr 19 2022 - 00Z Thu Apr 21 2022

...Late season snow for the interior Northeast on Monday night through
Tuesday...

...Temperatures will be 10 to 20 degrees below average east of the
Plains...

...There is a Critical Risk of fire weather over parts of the Southern
Rockies...

On Monday evening, an upper-level low over the Great Lakes will move
slowly off the Northeast Coast by Wednesday evening. The system will
produce snow from parts of the Great Lakes to the Northeast and Central
Appalachians. The snow will end from west to east by late Tuesday night.
Heavy snow will fall over interior portions of New York State and
northeastern Pennsylvania through Tuesday late afternoon. Rain will
develop over parts of the Ohio Valley and move into parts of the
Mid-Atlantic and coastal New England through Tuesday morning. In addition,
showers and thunderstorms will develop over parts of the Southeast and
Mid-Atlantic Coast through Monday evening. Furthermore, temperatures will
be 10 to 20 degrees below average east of the Plains under the upper-level
low. The temperatures will start to moderate on Tuesday.

Meanwhile, a front over the Pacific Northwest will move to the Upper
Midwest to Southern Plains by Wednesday evening. The system will produce
coastal rain and higher elevation snow over the Pacific Northwest and
Northern California into late Tuesday night. The light snow expands into
the Northern Intermountain Region by Tuesday morning and parts of the
Northern Rockies by Tuesday evening. Overnight Tuesday, snow will develop
over parts of the Northern Plains and Upper Mississippi Valley as the
system moves onto the Plains. The snow ends over the Northern Plains by
Wednesday afternoon and continues over the Upper Mississippi Valley. The
northwest coast of Lake Superior will get lake-enhanced snow on Wednesday.
Additionally, upper-level energy over the Southern Rockies/Southern Plains
and moist flow off the Western Gulf of Mexico will produce showers and
thunderstorms over parts of Southern Plains on Tuesday into Tuesday
evening.

On Wednesday, moisture will continue to stream northward over the Plains,
aiding in the development of showers and thunderstorms over the
Central/Southern Plains and Middle/Lower Mississippi Valley. Rain will
also develop over parts of the Northern Central Plains and move into the
Upper/Middle Mississippi Valley by Wednesday evening.

Moreover, the SPC has issued an Elevated Risk of fire weather over the
Southwest to Southern Rockies and far eastern Nebraska and western Iowa
through Tuesday morning. The fire weather hazard is due to gusty winds,
dry fuels, and low humidity. However, the fire weather risk increases to a
Critical Risk over parts of the Southern Rockies on Tuesday.

Ziegenfelder





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