US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
248 PM EST Wed Jan 06 2021
 
Valid Saturday January 09 2021 - Wednesday January 13 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 Southern Plains, Sun, Jan 10.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sat-Mon, Jan 
9-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. However, at this point in time there the snow is not heavy enough to meet 
criteria for heavy snow.  The same system will produce an area of heavy rain along the Western Gulf 
Coast on Sunday. The area of low pressure moves to the just off the Southern Mid-Atlantic Coast 
Tuesday. The system will produce rain and snow over parts of the Tennessee Valley into the 
Central/Southern Appalachians on Monday into early Tuesday. The snow 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 meeting our criteria for heavy precipitation 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 Sunday into 
Tuesday. The pressure gradient associated with the deep low will produce wind strong enough to meet 
the criteria for high winds on mainly Sunday weakening on Monday.   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