Prognostic Meteorological Discussion
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000
FXUS01 KWBC 220751
PMDSPD

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
350 AM EDT Sun Apr 22 2018

Valid 12Z Sun Apr 22 2018 - 12Z Tue Apr 24 2018

...Heavy rain possible from parts of the Ohio/Tennessee Valleys
into the Southern Mid-Atlantic/Southeast...

...Heavy snow possible over parts of the Northern Rockies/Northern
High Plains...

A storm over the Lower Mississippi Valley will slowly move into
the Tennessee Valley/Southeast by Monday evening.  Showers and
thunderstorms will develop along and ahead of the associated front
over the Lower Mississippi Valley that will move eastward to the
Southeast Coast into the Tennessee Valley by Monday evening into
Tuesday.  Rain will also develop over parts of the Middle
Mississippi Valley into parts of the Tennessee Valley that will
expand into parts of the Ohio Valley/Southern Appalachians and
parts of the Southern Mid-Atlantic by Sunday evening.  The rain
will expand into parts of the Central Appalachians and the
Mid-Atlantic by Monday evening.

Meanwhile, upper-level energy over the Pacific Northwest will move
eastward to the Northern Rockies/Northern High Plains by Monday
evening into Tuesday.  The energy will produce rain and higher
elevation snow over parts of the Northern/Central Rockies
overnight Sunday that will expand into parts of the
Northern/Central High Plains by Monday evening.


Ziegenfelder


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




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