US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
305 PM EST Wed Feb 05 2020
 
Valid Saturday February 08 2020 - Wednesday February 12 2020
 
Hazards:
- Heavy precipitation across portions of the Pacific Northwest and the Northern Great Basin, Sat, 
Feb 8.
- Heavy precipitation across portions of the Pacific Northwest, Mon-Tue, Feb 10-Feb 11.
- Heavy rain across portions of the Southern Plains, the Lower Mississippi Valley, the Tennessee 
Valley, the Middle Mississippi Valley, the Mid-Atlantic, the Southern Appalachians, the Southeast, 
the Southern Plains, and the Ohio Valley, Mon-Wed, Feb 10-Feb 12.
- Heavy snow across portions of the Central Plains, the Central Great Basin, the Northern Plains, 
the Northern Rockies, the Central Rockies, and the Northern Great Basin, Sat, Feb 8.
- Flooding possible across portions of the Southeast, the Southern Appalachians, the Mid-Atlantic, 
the Northeast, and the Central Appalachians.
- Flooding occurring or imminent across portions of the Lower Mississippi Valley, the Pacific 
Northwest, and the Northern Plains.
- Flooding likely across portions of the Pacific Northwest.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sat, Feb 8.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sun, Feb 9.
- High winds across portions of mainland Alaska and the Aleutians, Sat-Mon, Feb 8-Feb 10.
 
Detailed Summary:

As a system moving across the Northwest continues to produce heavy precipitation, including 
mountain snow across the Olympics and Cascades on Saturday, moisture associated with this storm 
will reach the higher elevations of western Oregon, northern Idaho and  western Montana and 
Wyoming, where more heavy mountain snow may also occur.  Sunday and into early Monday are expected 
to be drier across the Northwest before unsettled weather returns when another system drops south 
from western Canada.  This system is expected to bring heavy precipitation to portions of western 
Oregon, including heavy snow along the Cascades.      

By early next week, as an upper low develops and moves across the Southwest and ridging increases 
over the Gulf of Mexico, a frontal boundary is forecast to settle across the Lower Ohio to the 
Lower Mississippi valleys and eastward to the Southern Appalachians.  Increasing southerly winds 
will spread Gulf moisture initially over the Southern Plains and Lower Mississippi Valley on Monday 
along the frontal boundary Tuesday and Wednesday -- supporting heavy rainfall across these areas.  

A strong area of low pressure is expected to track through the eastern Bering Sea late Friday into 
early Saturday, with strong winds expected from the Aleutians to the southwest coast.  Heavy 
precipitation is expected along the central Gulf coast on Saturday before shifting farther south 
into the Panhandle on Sunday.

Pereira