Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
527 PM EDT Mon Aug 25 2014
Valid 00Z Tue Aug 26 2014 - 00Z Thu Aug 28 2014
...Cooler air to push across the Midwest on Tuesday and Wednesday while
temperatures will warm across the East...
...Heat and humidity will continue across the Southern Plains into the
lower Mississippi Valley...
...Scattered showers and thunderstorms will persist across the Southwest
and Southern Rockies and expand eastward across the Central Plains with
localized flash flooding possible...
Cooler air across the northern Rockies and Northern Plains will continue
moving eastward towards the Midwest over the next couple days. Along the
leading edge of the accompanying cold front, some scattered showers and
thunderstorms will fire up along the Mid Mississippi Valley across the
Midwest and approach the Northeast on Wednesday. Out ahead of the front,
the high pressure area that brought comfortable temperatures to much of
the East will weaken and stagnate over the next couple days allowing
temperatures to warm up and temperatures could become relatively hot by
Wednesday out ahead of the approaching cold front with temperatures likely
to rise above 90 degrees from the Mid Atlantic states into New England.
While the heat and humidity of late will break across the Mid to Upper
Mississippi Valley, cooler air will remain mostly north of Kansas and
Missouri southward across the Southern Plains and lower Mississippi Valley
where heat and high humidity will continue through Wednesday with
temperatures in the 90s to near 100 degrees.
An upper level disturbance will cross the Great Basin on Tuesday and cross
the Rockies on Wednesday bringing diurnally enhanced showers and
thunderstorms to those regions. As this system approaches the Central
Plains, it will interact with the frontal boundary separating the hot and
humid air across the Southern Plains from the cooler air to the north and
will focus the threat of showers and thunderstorms especially across the
Central Plains toward the mid and upper Mississippi Valley on Tuesday into
Wednesday. In these areas, the possibility that some of the rainfall
could be quite heavy could also bring the threat of flash flooding in some
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php