US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
447 PM EDT Fri Oct 02 2020
 
Valid Monday October 05 2020 - Friday October 09 2020
 
Hazards:
- Heavy rain across portions of the Southeast, Wed-Fri, Oct 7-Oct 9.
- Flooding possible across portions of the Southeast.
- Flooding occurring or imminent across portions of the Mid-Atlantic.
- Flooding likely across portions of the Southwest.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Mon, Oct 5.
 
Detailed Summary:

A more settled pattern is expected for the medium range (Monday, October 5th - Friday, October 
9th). The upper-level pattern suggests a surface low pressure system will swing across the northern 
tier states starting from the Northern Plains eastward. This will produce rain out ahead of the 
system and wind on its backside from the Upper Midwest to the Northeast through next Friday. 
Neither the rain nor the wind is expected to be hazardous at this time. Meanwhile, the current 
stream of tropical moisture will continue to impact southern Florida through the medium range as 
Tropical Storm Twenty-Five, which will remain well out into the Gulf of Mexico, is forecast to 
steer a weaker wave of low pressure toward the Florida Peninsula. The fetch of tropical moisture 
associated with the wave of low pressure paired with an entrenched area of high pressure to the 
north will lead to the continued threat for heavy rainfall over southern Florida through next 
Friday.

Elsewhere, high pressure will build over the central U.S. and shift eastward on Thursday and Friday 
while a warm front develops along the lee of the Rockies and moves over the Plains. This will lead 
to an increased chance for much above normal temperatures for the Northern/Central Plains, but a 
hazard area was not added due to the lack of model consensus on the magnitude and location of the 
anomalous temperatures. Above average temperatures will continue in the west through the medium 
range, but will not be hazardous. Fire risk will remain a concern during this time, particularly 
over northern California and much of the Pacific Northwest due to the ongoing severe drought. 

In Alaska, a deep low pressure system will produce heavy precipitation over the southeastern Gulf 
coast on Monday. Another powerful low pressure system will approach Alaska from the Bering Sea on 
Tuesday. This system may produce high winds across the Aleutians, and along Alaska's west coast on 
Wednesday. It is forecast to impact the southeast coast and Panhandle with potentially heavy 
precipitation on Thursday and Friday. A heavy precipitation area was not added at this time due to 
the lack of confidence on the magnitude of the precipitation.

Kebede