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
329 AM EDT Fri May 22 2015

Valid 12Z Fri May 22 2015 - 12Z Sun May 24 2015

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

...Heavy rain possible over the Southern Plains into parts of the
Central Plains...

...Temperatures will be 10 to 20 degrees below average over parts
of the Central/Southern Plains...

A quasi-stationary front along the Gulf Coast will begin to return
northward over the Southern Plains on Saturday.  The boundary will
aid in focusing showers and thunderstorms over parts of the
Central/Eastern Gulf Coast through Saturday.  Moisture streaming
northward over the Southern/Central Plains will aid in producing
showers and thunderstorms over the Central/Southern Plains into
parts of the Central High Plains on Friday and Saturday. 

Meanwhile, an upper-level low over Southern California will move
northeastward to the Central Rockies by Saturday evening.  The
energy along with diurnal heating will trigger afternoon and
evening showers and thunderstorms from parts of the Pacific
Northwest/California eastward to the Central/Northern Rockies
through Saturday.  The areal coverage of the precipitation will
wane during the late night and morning hours to rain with embedded
thunderstorms on Friday and Saturday morning. 

Elsewhere, a reinforcing cold front extending from the Northern
Appalachians to the Ohio Valley will move off the Northeast Coast
while dissipating over parts of the Ohio Valley by Saturday
morning.  Scattered areas of rain will develop over parts of
Northern New England and parts of the Central Appalachians on


Graphics available at

Last Updated: 329 AM EDT Fri May 22 2015