The Weather Prediction Center

Short Range Forecast Discussion

[Abbreviations and acronyms used in this product]
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Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
420 PM EDT Sat Apr 18 2015

Valid 00Z Sun Apr 19 2015 - 00Z Tue Apr 21 2015

...There is a slight risk of severe thunderstorms over parts of
the Central/Southern Plains...

...Heavy rain possible from parts of the Mid-Atlantic
southwestward to Central Gulf Coast...

An upper-level low over the Central High Plains will move to the
Ohio Valley and get in lockstep with upper-level energy over
South-Central Canada by Monday.  Moisture from the Gulf of Mexico
will move into the Ohio Valley then into the Mid-Atlantic by
Monday.  Showers and thunderstorms will develop over parts of the
Central/Southern Plains into the Middle Mississippi Valley/Central
Gulf Coast and the Southeast on Saturday evening.  The showers and
thunderstorms will move into the Mid-Atlantic to the Southeast and
over parts of the Ohio/Tennessee Valleys/Southern Appalachians by
Monday.  In addition, the storm will produce snow over parts of
the Central Rockies through Sunday morning with pockets of snow
lingering over parts of the Central Rockies Sunday evening into
Monday morning.  Rain will also develop over the Northern Plains
and slowly move eastward to the Great Lakes/Northern Ohio Valley
by Monday.  Another area of rain will develop over parts of the
Mid-Atlantic on Sunday evening and move into the Northeast by
Monday morning.  Elsewhere, low pressure over Southern New England
Coast will move eastward out over the Atlantic by early Sunday
morning.  The low will produce rain over parts of New England on
Saturday evening, ending with rain and snow by late Saturday


Graphics available at

Last Updated: 420 PM EDT Sat Apr 18 2015