US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
552 PM EST Tue Jan 05 2021
 
Valid Friday January 08 2021 - Tuesday January 12 2021
 
Hazards:
- Heavy precipitation across portions of the Pacific Northwest and the Northern Great Basin, 
Mon-Tue, Jan 11-Jan 12.
- Heavy rain across portions of the Lower Mississippi Valley and the Southern Plains, Sun, Jan 10.
- Heavy snow across portions of the Central Rockies, the Central Plains, and the Southern Plains, 
Sat, Jan 9.
- Flooding occurring or imminent across portions of the Southern Plains, the Mid-Atlantic, and the 
Pacific Northwest.
- Flooding likely across portions of the Mid-Atlantic.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sun-Mon, Jan 
10-Jan 11.
 
Detailed Summary:

Low pressure over the Central High Plains will advance southward to Eastern Mexico by Sunday.  The 
system will produce snow over parts of the Central Rockies/Central High Plains and Southern High 
Plains on Saturday.  The same system will produce an area of heavy rain along the Western and 
Central Gulf Coast on Sunday.  The area of low pressure moves to the Eastern Gulf Coast on Monday 
and northeastward to off the Mid-Atlantic Coast by Tuesday.   The system will produce rain and snow 
over parts of the Tennessee Valley into the Central/Southern Appalachians on Sunday evening into 
Monday.  Some snow may make it to the Virginia Piedmont but will be low than warning criteria.  
Meanwhile, an approaching system to the Pacific Northwest will produce coastal rain and higher 
elevation snow over parts of the Northwest on Monday and Tuesday.

Over Alaska, an area of deep low pressure over the North Pacific will move eastward along the 
Aleutians on Saturday and then move into the Gulf of Alaska on Monday and Tuesday.  The system will 
produce heavy precipitation from Kenai Peninsula eastward to Alaska's Panhandle on Monday and 
Tuesday.  With the deep low pressure, weak upper-level ridging will develop over parts of the Far 
North into parts of the Interior.  This upper-level feature will allow temperatures to become high 
than average.  However, the surface temperatures will still be below freezing in the single digits 
and low to mid-teens.    

Ziegenfelder