US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
241 PM EDT Wed Oct 30 2019
 
Valid Saturday November 02 2019 - Wednesday November 06 2019
 
Hazards:
- Flooding possible across portions of the Middle Mississippi Valley, the Great Lakes, and the 
Northern Plains.
- Flooding occurring or imminent across portions of the Middle Mississippi Valley, the Upper 
Mississippi Valley, and the Northern Plains.
- Much below normal temperatures from portions of the Central Rockies to the Southern/Central 
Plains, and Lower Mississippi Valley, Sat-Sun, Nov 2-Nov 3.
- Heavy rain across portions of the Alaska Panhandle, Sat, Nov 2.
 
Detailed Summary:

The medium range period remains fairly quiet through especially the second half of the period. The 
only main hazard for the CONUS is associated with a surge of cold air into the Central U.S. this 
weekend bringing the threat for much below normal temperatures. Minimum temperature anomalies of 10 
to 20 degrees would reach criteria for a hazard area, and should shift eastward with time on 
Saturday from the Central Rockies/Plains to mainly the Lower Mississippi Valley/Southern Plains by 
Sunday. After this, the airmass moderates a bit as it shifts into the eastern U.S. next week and 
temperature anomalies are not expected to reach criteria for an area on the hazard chart.

In Alaska, strong onshore flow around a stationary frontal boundary will bring the threat for heavy 
rainfall to the Alaska Panhandle late this week and into this weekend. While most of the heavy 
rainfall is expected to fall before the medium range period begins (Sat, Nov 2), it may linger into 
Saturday and so a heavy rainfall area was maintained for southern portions of the Panhandle today. 
Elsewhere in Alaska, weather should be fairly quiet/below hazard criteria. Strong high pressure 
across northern/eastern parts of the state will bring a threat for below normal temperatures, but 
criteria meeting values may be confined to small portions of the southeast/Panhandle region and may 
be too limited to include on the hazards chart.

Santorelli