Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
1035 PM EST Sat Dec 09 2023

Valid 12Z Sun Dec 10 2023 - 12Z Tue Dec 12 2023

...Moderate to heavy Snow for the northern Cascades/Rockies today...

...Heavy to Excessive Rainfall and wind impacts Northeast/Mid-Atlantic
Coast beginning tonight; Heavy Snow likely over Northern
Appalachians/interior Northeast...

...Cold front brings cooler temperatures from Midwest to East Coast...

Low pressure system will continue dumping heavy rain to the Washington and
Oregon coasts today while spreading snow across the northern Cascades and
Northern Rockies. Excessive Rainfall concerns will remain Marginal over
Oregon as the heaviest Rainfall will have ended by this morning.
Temperatures in the West moderate a bit for the next few days.

In the East an amplified upper-level trough will support a deep
mid-latitude cyclone as it moves through the Midwest and East Coast over
the next couple of days. This dynamic system will bring wind showers and
thunderstorms to much of the East Coast today while supporting winter
weather from the Central Appalachians to the interior Northeast beginning
tonight. Heavy to Excessive Rainfall is expected for most of the
Mid-Atlantic to Northeast Coast, while there are severe weather concerns
from the Mid-Atlantic down to the Southeast Coast today. There's a Slight
Risk of Excessive Rainfall leading to Flash Flooding for parts of the
Northeast Coast and southern New England today. Moderate to heavy snow
will develop on the backside of this system as cold air flows into the
interior Northeast and down the spine of the Northern/Central Appalachians
tonight. Conditions should begin to improve Monday night into Tuesday
morning.

A secondary cold front will bring snow showers to the Upper Great Lakes
today. The lower 48 will quiet down considerably after the East Coast
storm system departs Monday night. Temperatures will drop across the East
on the backside of the primary cold front. Temperatures across the rest of
the country will be seasonable. Dry and gusty conditions will support
Elevated Fire Weather conditions for southern California today.


Kebede


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