Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
358 PM EDT Sun Jul 23 2017

Valid 00Z Mon Jul 24 2017 - 00Z Wed Jul 26 2017

...Concerns of flash flooding and severe weather across the Mid-Atlantic
region will end tonight...

...Relief from the dangerous heat expected from the Plains to the
Mid-Atlantic as a cold front moves across the East...

...Localized flooding will be possible for the Southwest and southern and
central Rockies over the next few days...


The wavy frontal boundary that stretches from the Northeast to the central
Plains will continue to be the focus for showers and thunderstorms over
the next few days.  The last round of showers and thunderstorms for the
Mid-Atlantic will move over the region tonight and could last through
Monday morning.  These storms could produce both flash flooding and severe
weather.  By Monday, isolated storms could be possible for the
Mid-Atlantic however organized precipitation as seen in the last few days
is not expected.  Meanwhile, precipitation increases across the Southeast
through the Carolinas on Monday and Tuesday as the cold front slowly
drifts south.  Farther north, as an amplified upper level disturbance
moves eastward over the Great Lakes region, heavy rain and severe weather
could be possible tonight and into Monday morning.  An increase in
precipitation can be expected for the Northeast and New England on Monday
night and into Tuesday as this upper level energy moves over New England. 

Dangerous heat that has plagued areas across the eastern half of the U.S.
will finally be delivered some relief as the cold front sinks over the
central Plains and Middle Mississippi Valley.  Temperatures in these areas
will be close to normal.  One more hot and humid day for the Mid-Atlantic
can be expected on Monday before the cold front moves over the area.

Elsewhere, monsoonal moisture along with daytime heating will trigger
thunderstorms across the Southwest and the southern half of the Rockies on
Sunday. Heavy downpours associated with these thunderstorms could lead to
localized flash flooding. An increase in flash flooding threat will be
possible across Arizona on Monday.

As a cold front sweeps across the northern Plains and into the Upper
Midwest on Tuesday, showers and thunderstorms will develop along and ahead
of it.  There is a slight risk of flash flooding and severe weather for
the eastern portions of the northern Plains and areas across the Upper
Midwest. 

Reinhart

Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php