Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
351 AM EDT Sun Aug 17 2014
Valid 12Z Sun Aug 17 2014 - 12Z Tue Aug 19 2014
...There is a slight risk of severe thunderstorms over the
...Heavy rain possible over parts of the Ohio Valley...
Upper-level energy over the Middle Mississippi Valley will move slowly
eastward to the Mid-Atlantic while weakening. The associated surface
boundary will likewise move eastward to the Central Appalachians by Monday
evening. The system will produce showers and thunderstorms over the
Middle Mississippi Valley that will trail southwestward to the Southern
Plains on Sunday. The area of showers and thunderstorms will move into
the Ohio Valley by Sunday evening and move to the Mid-Atlantic by Monday
A weak upper-level impulse over the Mid-Atlantic will trigger light rain
over parts of the Mid-Atlantic/Eastern Ohio Valley on Sunday morning. In
addition, upper-level low over the Northeast will slowly move eastward to
Southeastern Canada by Monday. The energy will aid in producing light
rain over parts of Northern New England through Monday morning.
Meanwhile, upper-level energy over West-Central Canada will move to the
Upper Mississippi Valley/Upper Great Lakes by Monday evening. A weakening
front associated with the energy will produce showers and thunderstorms
over the Upper Mississippi Valley on Sunday. The main energy will produce
showers and thunderstorms over parts of the Northern Plains on Sunday
moving slowly to the Upper Great Lakes/Middle Mississippi Valley by
Elsewhere, weak upper-level impulses and moisture pooling along the Gulf
Coast will trigger showers and thunderstorms over the area on Sunday.
Furthermore, monsoonal moisture and diurnal heating will produce showers
and thunderstorms over parts of the Southwest and the Southern/Central
Rockies during the late afternoon and evening on Sunday and Monday.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php