Prognostic Meteorological Discussion
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FXUS01 KWBC 230758

Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
357 AM EDT Fri Mar 23 2018

Valid 12Z Fri Mar 23 2018 - 12Z Sun Mar 25 2018

...Heavy snow possible over parts of the Shasta/Trinity Mountain
and the Sierras...

...Heavy snow possible for portions of the Northern Plains to the
Middle Mississippi Valley and parts of the Central Appalachians...

...Heavy rain possible over parts of Northern California Coast...

A storm over the Northern/Central High Plains will move
southeastward to the Lower Mississippi and Tennessee Valleys by
Saturday evening.  The system will produce rain and higher
elevation snow over parts of the Great Basin and the
Northern/Central Rockies a long with the Northern Plains on Friday
morning.  The snow and rain will end over parts of the Northern
Rockies by Friday afternoon and over the Great Basin/Central
Rockies overnight Friday.  Rain and snow will move into parts of
the Upper/Middle Mississippi Valley by Friday evening that will
continue to expand southeastward into the Ohio Valley into the
Central Appalachians by Saturday morning.  Showers and
thunderstorms will develop over parts of the Central Plains by
Friday evening moving into the Middle Mississippi Valley by
Saturday morning and into the Tennessee Valley by Saturday
evening.  In addition, rain will move into parts of the
Southeast/Southern Mid-Atlantic on Saturday morning into Saturday

Meanwhile, a deep upper-level low just off the Northwest Coast
will eject areas of upper-level energy into the Pacific Northwest
into the Northern Rockies and parts of Northern California by
Saturday evening.  The system will produce rain and higher
elevation snow over parts of the Pacific Northwest/Northern
California on Friday morning that will slowly expand eastward into
Northern Intermountain Region by Friday evening.


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