Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
327 PM EDT Thu Jul 24 2014
Valid 00Z Fri Jul 25 2014 - 00Z Sun Jul 27 2014
...There is a slight risk of severe thunderstorms over parts of the
Northern Plains and Carolinas...
...Temperatures will be 10 to 15 degrees below average over the Pacific
A strong upper level ridge will continue to dominate the weather pattern
over the U.S. for the next several days. A storm system moving through the
Pacific Northwest and Western Canada will be forced eastward across the
northern tier of the U.S. Much below normal temperatures will be common
across the Pacific Northwest in wake of the cold frontal passage today. As
the storm system moves into the Central U.S., active weather will be
confined to areas along and ahead of the occluded front and warm front in
the Northern Plains and later the Great Lakes. Strong subsidence from the
upper ridge should suppress shower activity in the Central Plains through
the period even though a cold front will be approaching the region.
In the east, a frontal boundary will slowly drift southward from the Mid
Atlantic to the Southeast. Showers and thunderstorms are expected along
the boundary tonight from the Mid Atlantic to the Central Gulf Coast. By
tomorrow scattered thunderstorm activity should be limited to coastal
areas from the Carolinas to Texas.
In the Southwest, diurnally driven showers and thunderstorms are expected
into the weekend. With a strong upper ridge in place to the east, tropical
moisture will be drawn northward off the Eastern Pacific. Precipitable
water values nearing two standard deviations above normal over the region
will allow for isolated heavy rainfall and potentially flash flooding.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php