Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
300 AM EST Fri Dec 08 2023

Valid 12Z Fri Dec 08 2023 - 12Z Sun Dec 10 2023

...Unsettled weather with Excessive Rainfall and Heavy Snowfall
implications return to the Pacific Northwest this weekend...

...Severe Thunderstorms and Heavy rainfall spread from Gulf Coast to East
Coast this weekend...

...Warm temperatures shift from Mississippi Valley to East Coast...


Light to moderate snow is expected over the Rockies today beneath an area
of low pressure. A deep mid-latitude cyclone will spread snow and wind
across the Northern Plains today before the shortwave aloft phases with a
southern stream trough and re-focuses activity over areas east of the
Great Plains this weekend. This phasing upper-level pattern will "open up"
the Gulf of Mexico by drawing anomalous moisture and spreading it out
across the Lower Mississippi Valley beginning Friday night. Showers and
thunderstorms are expected to expand up into the Midwest on Saturday.
There's currently Slight Risk of Severe Thunderstorms from east Texas to
the Tennessee Valley on Saturday afternoon and evening carrying the threat
of tornadoes, damaging winds and large hail.

This deepening upper trough will promote warm southerly flow into the
eastern half of the country over the next few days. As a result,
temperatures across the Plains and Midwest will be well above average
today and Saturday before shifting into the East Coast on Sunday.
Conversely, high pressure will settle in over the West and support below
average temperatures for much of the Intermountain West and Rockies this
weekend.


Kebede


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