Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
421 AM EDT Thu Oct 18 2018
Valid 12Z Thu Oct 18 2018 - 12Z Sat Oct 20 2018
...Heavy rain possible over parts of the Western Gulf Coast...
...Rain will persist across parts of the Southern Plains with more areas
of heavy rain and flash flooding expected...
...Temperatures will be 10 to 25 degrees below average over parts of the
Southern Plains and Southern Rockies...
Upper-level energy over the Southwest/Great Basin will slowly move
eastward to parts of the Central Plains to the Middle Mississippi Valley
by Friday evening. Moisture flowing northwestward out of the Gulf of
Mexico aided by the upper-level energy will producing rain and snow over
parts of the Great Basin will slowly move into parts of the Central
Rockies by Thursday evening, ending by Friday afternoon. Rain will
develop over parts of the Southern High Plains that will move into the
Southern Plains by Friday morning and into parts of the Lower Mississippi
Valley/Ohio Valley by Friday evening. The rain will end over the Southern
High Plains by Friday morning. In addition, the onshore flow off the
Western Gulf of Mexico will also aid in developing showers and
thunderstorms over parts of the Western Gulf Coast through Friday evening.
Furthermore, easterly flow off the Atlantic will aid in producing showers
and thunderstorms over parts of Florida through Friday evening, too.
Meanwhile, an upper-level trough over the Northeast will aid in producing
light snow and rain over parts of Northern New England through Thursday
evening. A front moving southeastward from Central Canada will move to
the Upper Great Lakes to parts of the Southern High Plains by Friday
evening. The boundary will aid in producing rain over parts of the Upper
Great Lakes/Upper Mississippi Valley on Friday morning that will move into
the Great Lakes by Friday evening. Additional rain will develop over
parts of the Upper Mississippi Valley on Friday evening into Saturday.
Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php