Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
334 PM EDT Thu Oct 19 2023

Valid 00Z Fri Oct 20 2023 - 00Z Sun Oct 22 2023

...Rain from the Great Lakes to the Northeast...

...Temperatures will be 15 to 25 degrees above average over the western
half of the country...

On Thursday evening, a front extending from the Great Lakes to the
Western/Central Gulf Coast will advance off the Eastern Seaboard by
Saturday. The system will produce rain over parts of the Great Lakes/Ohio
Valley by Thursday evening, which will develop southward over the
Tennessee Valley into the Central Gulf Coast overnight Thursday.

In addition, on Thursday evening, moisture from the Atlantic will stream
into the Mid-Atlantic, creating rain over the region overnight Thursday
into Friday. As the front moves eastward on Friday, rain moves into parts
of the Northeast and extends southward into the Southeast by Friday
evening. Overnight Friday, the rain will become more scattered from the
Lower Great Lakes/Ohio Valley to the Mid-Atlantic into Saturday.

Furthermore, on Friday, a second front over the Northern High Plains will
move southeastward to the southern Mid-Atlantic/Southern Appalachians to
the Southern Plains by Saturday evening. The system will keep light rain
over parts of the Upper Midwest Friday evening into Saturday.

Meanwhile, upper-level ridging over the Southwest creeps eastward into the
Plains by Saturday. The upper-level ridging will allow temperatures to be
15 to 25 degrees above average over the Northern Intermountain
Region/Southwest into the Plains. Additionally, weak onshore flow over the
Northwest will aid in creating very scattered rain over parts of the
region from Thursday afternoon into Friday.


Ziegenfelder


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