Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
259 PM EST Sat Nov 12 2022

Valid 00Z Sun Nov 13 2022 - 00Z Tue Nov 15 2022

...Lake-effect snow downwind from the Great Lakes Saturday night into
Sunday...

...Below average temperatures for much of the lower 48 through Monday...

...Freeze Waning and Freeze Watch across parts of the Southern Plains,
Lower Mississippi Valley, and Tennessee Valley...

There is a lot of uncertainty with the frontal structure and placement for
this forecast cycle. Upper-level energy over the Midwest will produce
lake-effect snow downwind from Lakes Superior, Michigan, Huron, and Erie
from Saturday evening into Sunday evening. The snow will result in reduced
visibility and hazardous driving conditions. The energy will also produce
light rain over parts of the Northeast into the Central/Southern
Appalachians, ending overnight for the Central/Southern Appalachians. The
rain will end over the Northeast by Sunday evening.

Meanwhile, upper-level energy moving across the West and Northern Rockies
will produce light snow over parts of the Great Basin and Northern Rockies
starting on Saturday evening into Sunday. By Sunday evening, snow will
develop over parts of the Central/Southern Rockies in the Central/Southern
High Plains through Monday. Furthermore, light snow will develop over
parts of the Northern Plains into the Upper Mississippi Valley from Sunday
evening into Monday. The snow will result in reduced visibility and
hazardous driving conditions.

Moreover, cold high pressure over the Southern Plains will produce
temperatures 10 to 15 degrees below average over the region. The low
temperatures have prompted Freeze Waning and Freeze Watch across parts of
the Southern Plains, Lower Mississippi Valley, and Tennessee Valley from
Saturday evening into Sunday morning.


Ziegenfelder

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