US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
200 PM EST Mon Nov 04 2019
 
Valid Thursday November 07 2019 - Monday November 11 2019
 
Hazards:
- Heavy snow across portions of the Great Lakes, the Mid-Atlantic, the Northeast, and the Central 
Appalachians, Thu-Fri, Nov 7-Nov 8.
- Flooding occurring or imminent across portions of the Middle Mississippi Valley, the Northeast, 
the Great Lakes, and the Northern Plains.
- Flooding likely across portions of the Northern Plains.
- Much below normal temperatures across portions of the Central Plains, the Mid-Atlantic, the Lower 
Mississippi Valley, the Central Appalachians, the Northern Plains, the Tennessee Valley, the Great 
Lakes, the Middle Mississippi Valley, the Northeast, the Southern Appalachians, the Upper 
Mississippi Valley, the Southeast, the Southern Plains, and the Ohio Valley, Thu-Mon, Nov 7-Nov 11.
 
Detailed Summary:

The medium range period will feature upper-level ridging across the west and troughing across the 
east. Two potent cold fronts are forecast to swing through the central and eastern United States, 
bringing widespread temperatures well below average between Thursday and Tuesday. Low temperatures 
below freezing could reach as far south as central Mississippi on Saturday, with lows in the single 
digits possible across the Northern Plains on Monday.  

The only precipitation hazard on today's map is a heavy snow area across the Northeast. A cold 
front is forecast to push across the region on Thursday, with light rain/snow possible. As the 
front exits the New England coast on Friday, a low pressure system may develop and strengthen, 
leading to a swath of light-to-moderate snow. The greatest chance for accumulating snow greater 
than 4 inches currently stretches from northern Pennsylvania to Maine, but uncertainty still 
remains on exact amounts and location. Lake effect snow is a possibility as the system exits on 
Friday evening and again on Sunday/Monday after a second cold front crosses the Great Lakes.

Across Alaska, above average temperatures and a few rounds of rain and snow are possible across  
southern portions of the state during the medium range period. However, no weather hazards are 
currently expected.

Snell