Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
500 AM EDT Thu Jul 31 2014
Valid 12Z Thu Jul 31 2014 - 12Z Sat Aug 02 2014
...Heavy rain and thunderstorms will move eastward into the Lower
Mississippi Valley on Thursday...
...Conditions will become increasingly wet over the Southeast and
...Heavy rains and flash flooding possible over the Southern Rockies...
An organized area of heavy rains and thunderstorms will continue to
develop to the northeast of a surface low slowly sinking through East
Texas on Thursday. Locations surrounding the Ark-La-Tex region should see
the highest rainfall totals and greatest chance for any flash flooding.
The organized area of rain and thunderstorms will slide farther southeast
through the Lower Mississippi Valley on Friday...but the threat for heavy
downpours and flash flooding should diminish as the wave weakens while
dropping towards the Louisiana coast.
A frontal boundary initially shoved well off the Atlantic coast will
gradually edge back westward the next few days. The increase in moisture
with the approaching front...combined with weak energy aloft...should fuel
and trigger showers and thunderstorms across the Southeast on Thursday.
Moist upslope flow into the terrain should lead to especially heavy
amounts along the Southern Appalachians. Rain and thunderstorms should
spread north on Friday...impacting much of the Mid-Atlantic states.
Anomalous moisture in place should continue to fuel widespread shower and
thunderstorm activity across much of the terrain of the Western U.S.
Thursday and Friday. The greatest chance for organized and heavy
precipitation will be along the Southern Rockies...and locations across
New Mexico and into south central Colorado could see localized areas of
Summer heat will continue across portions of the northern Rockies and
Intermountain west late this week. Daytime temperatures could approach or
reach triple digits beneath a persistent upper ridge amplified over the
Weak energy rotating around an upper vortex spinning over eastern Canada
should trigger scattered showers and thunderstorms across the Great Lakes
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php