Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
300 AM EDT Thu May 23 2019

Valid 12Z Thu May 23 2019 - 12Z Sat May 25 2019

...Cool for the West and Hot for the Southeast with more storms across the
Plains...

A very active weather pattern is forecast to continue across the central
part of the nation through the end of the week.  This is in response to an
anomalous upper level trough situated over the Intermountain West and a
large upper level ridge anchored over the southeastern U.S.  A clash of
air masses from the southern plains to the Ohio Valley region will support
multiple episodes of bad weather in the general vicinity of a slow moving
frontal boundary with waves of low pressure developing along it. 

The first of these surface lows will cross the Great Lakes region on
Thursday and bring a cool front to the East Coast by Friday morning.  In
the warm sector of this low, severe thunderstorms will be possible from
the Ohio Valley to the Mid-Atlantic and Northeast on Thursday.  After some
lingering showers across New England on Friday, expect better conditions
across the northeastern quadrant of the nation to end the work week, with
slightly cooler conditions and lower humidity compared to Thursday.

The second low pressure system develops across the western High Plains
Thursday night and lifts northeastward across the Upper Midwest by Friday
evening.  A corridor of enhanced rainfall along with severe weather is
likely from the Texas Panhandle to Wisconsin over the next couple of days.
 Flash flooding is possible across portions of the central plains during
this time, and SPC has an enhanced risk of severe storms from northwest
Texas to central Kansas on Thursday.

In terms of temperatures, readings will continue to be well below average
for the Rockies and extending westward across the Great Basin and into
California given the presence of the upper level trough and increased
cloud cover, and snow showers are expected to continue for some of the
higher mountain ranges.  Across the Deep South and the Carolinas, record
high temperatures will be possible towards Friday and especially into the
weekend with highs soaring well into the 90s and perhaps close to 100
degrees for some areas by Friday.

D. Hamrick


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