US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
305 PM EST Thu Feb 06 2020
 
Valid Sunday February 09 2020 - Thursday February 13 2020
 
Hazards:
- Heavy precipitation across portions of the Southwest, Tue-Wed, Feb 11-Feb 12.
- Heavy rain across portions of the Southern Plains, Lower Mississippi Valley, the Middle 
Mississippi Valley, the Tennessee Valley, the Ohio Valley, the Mid-Atlantic, the Southern 
Appalachians,  and the Southeast Tue-Thu, Feb 11-Feb 13.
- Heavy rain across portions of the Southeast, the Southern Appalachians, the Lower Mississippi 
Valley, the Southern Plains, and the Tennessee Valley, Sun-Mon, Feb 9-Feb 10.
- Heavy snow across portions of the Southern Rockies, the Central Rockies, the Central Great Basin, 
and the Southwest, Tue-Wed, Feb 11-Feb 12.
- Heavy snow across portions of the Northeast, the Great Lakes, and the Upper Mississippi Valley, 
Sun, Feb 9.
- Heavy snow across portions of the Northeast, Mon, Feb 10.
- Flooding possible across portions of the Northeast, the Central Appalachians, the Northern 
Plains, the Tennessee Valley, the Mid-Atlantic, the Southern Appalachians, and the Southeast.
- 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 and the Northern Great Basin.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sun-Mon, Feb 
9-Feb 10.
 
Detailed Summary:

Moisture from the Gulf of Mexico lifting north into a slow-moving frontal boundary is expected to 
support a heavy rainfall threat from the from the Lower Mississippi Valley northward into the 
Tennessee Valley and Southern Appalachians late Sunday through Monday.  Then beginning on Tuesday 
and continuing in Thursday, as a weakening upper low lifts northeastward from the southwestern U.S. 
and northwestern Mexico and into the Southern Plains, heavy rains are expected to redevelop and 
spread north and east from the Southern Plains and Lower Mississippi Valley to the Tennessee and 
Lower Ohio valleys, Southern Appalachians and Southeast.

A fast-moving area of low pressure is expected to support a brief period of potentially heavy snow 
from Wisconsin to northern New York late Sunday and across northern New England on Monday.

A second system dropping into the southwestern U.S. is expected to support heavy precipitation, 
including high elevation snow along the Mogollon Rim in Arizona and heavy snows across the San Juan 
Mountains into southwestern Colorado and far northern New Mexico on Tuesday and Wednesday.

Across Alaska, persistent onshore winds along with a weak surface low tracking east from the Gulf 
of Alaska will support heavy precipitation along the Panhandle beginning Sunday and continuing 
through Monday.

Pereira