US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
416 PM EST Mon Nov 02 2020
 
Valid Thursday November 05 2020 - Monday November 09 2020
 
Hazards:
- Heavy rain across portions of the Central/Southern Plains, and the Upper/Middle Mississippi 
Valley, Mon, Nov 9.
- Heavy rain across portions of the Southeast, Sat-Mon, Nov 7-Nov 9.
- Heavy snow across portions of the Northern Plains/Rockies, Sat-Sun, Nov 7-Nov 8.
- Flooding possible across portions of the Pacific Northwest and the Northern Great Basin.
- Much below normal temperatures across portions of the Central Plains/Great Basin, the Central 
Great Basin, and the Northern Plains/Rockies, Mon, Nov 9.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sun, Nov 8.
- Heavy precipitation across portions of the Alaska Panhandle, Mon, Nov 9.
- High significant wave heights for coastal portions of mainland Alaska, Thu, Nov 5.
 
Detailed Summary:

The medium range period (Thursday, November 5th - Monday, November 9th) will feature an active 
pattern over Alaska and the western U.S.. High pressure will settle over much of the eastern third 
of the country during the medium range period, while a new system emerges from the Rockies. This 
system is expected to produce heavy snow over parts of central and eastern Montana on Saturday 
before moving into the Plains and Mississippi Valley. Heavy rain will be a threat across the 
Southern/Central Plains through to the Upper Midwest on Monday as the low pressure system 
strengthens and enhances rainfall along its cold front. Temperatures will quickly drop on the 
backside of this system as cold air filters into the western U.S. beneath an area of high pressure. 
High temperatures are expected to be down to 26 degrees below average for parts of Nevada and 
western Utah, as well as the Northern/Central Plains on Monday. This may lead to widespread high 
temperature records being broken. Meanwhile, a late season plume of tropical moisture will make its 
way into South Florida this weekend which will lead to the threat of heavy rain for that area from 
Saturday through Monday. Anomalously warm low temperatures may lead to records being broken across 
parts of the northwest and southwest on Thursday, as well as the Central Plains and Upper Midwest 
on Saturday and Sunday.

In Alaska, a pair of systems will produce scattered areas of rainfall and heavy precipitation 
between Thursday and Monday. On Thursday an emerging Bering Sea low pressure system will generate 
enough rain and wind to cause coastal flooding. Another low pressure system will emerge over the 
Gulf of Alaska on the 8th. This system is likely to be the cause of heavy precipitation across the 
southeastern mainland and northern panhandle on the 8th. The heavy precipitation is likely to 
recede into the rest of the panhandle on Monday. Above average temperatures across the northern 
mainland as well as below average temps over the southeastern part of the state are also expected 
during the medium range period despite not being particularly hazardous.

Kebede