Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
339 AM EDT Thu Jul 19 2018
Valid 12Z Thu Jul 19 2018 - 12Z Sat Jul 21 2018
...There is a slight risk of severe thunderstorms over parts of the Middle
...Heavy rain possible over parts of the Ohio Valley...
...Heavy rain possible over parts of the Southeast Coast and the Eastern
A quasi-stationary front extending from the Southeast Coast westward to
Tennessee Valley will aid in producing showers and thunderstorms over the
region through Friday evening. In addition, a developing upper-level low
over the Northern Plains will move roughly eastward to the Upper
Mississippi Valley/Great Lakes by Friday evening into Saturday morning.
The energy will aid in producing showers and thunderstorms over parts of
the Northern Plains into the Middle Mississippi Valley that will move
eastward to the Upper Mississippi Valley/Great Lakes and the
Ohio/Tennessee Valleys while expanding into parts of the Central
Appalachian and the Southern Mid-Atlantic by Friday evening.
Meanwhile, monsoonal moisture and daytime heating will aid in producing
showers and thunderstorms over parts of the Southwest/Great Basin and the
Central/Southern Rockies through Friday evening, too. The showers and
thunderstorms will have the greatest areal coverage during the late
afternoon into the late evening on Thursday and Friday.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php