Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
400 PM EDT Sat May 19 2018
Valid 00Z Sun May 20 2018 - 00Z Tue May 22 2018
...Widespread shower and thunderstorm activity will continue from the
southern and central Plains to the East Coast...
...Dry and cool conditions expected with a surface ridge while it builds
over the north central U.S....
...An amplifying upper trough will bring unsettled weather and below
normal temperatures to portions of the western U.S....
Widespread showers and thunderstorms will continue to develop within a
warm and moist airmass in place from the southern and central Plains to
the eastern U.S. The greatest threat for any organized areas of heavy
rainfall or strong to severe thunderstorms will be from central Texas into
the Middle Mississippi Valley as an impulse of energy aloft ejects
northeastward out of the central Rockies Saturday evening. As the energy
and an associated weak surface wave track eastward on Sunday, the chance
for heavy rain and strong thunderstorms will shift into the Ohio Valley.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php