US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
518 PM EDT Mon Oct 07 2019
 
Valid Thursday October 10 2019 - Monday October 14 2019
 
Hazards:
- Heavy precipitation across portions of the Northern/Central Plains, the Great Lakes, the Upper 
Mississippi Valley, Thu-Sat, Oct 10-Oct 12.
- Heavy rain across portions of the Central/Southern Plains, the Mississippi/Ohio Valley, the Great 
Lakes, and the Northeast, Thu-Fri, Oct 10-Oct 11.
- Heavy snow across portions of the Central Rockies and the Central Plains, Fri, Oct 11.
- Severe weather across portions of the Central/Southern Plains and the Middle/Lower Mississippi 
Valley, Thu, Oct 10.
- Flooding occurring or imminent across portions of the Great Plains, the Mississippi Valley, and 
the Great Lakes.
- Flooding likely across portions of the Northern Plains.
- High winds across portions of the Central Rockies and the Central/Southern Plains, Thu, Oct 10.
- Much below normal temperatures across portions of the Great Plains, the Rockies, the 
Northern/Central Great Basin, the Upper/Middle Mississippi Valley, California, the Pacific 
Northwest, and the Southwest, Thu-Fri, Oct 10-Oct 11.
- Enhanced wildfire risk for part of southern California, Thu, Oct 10.
- Heavy rain across portions of the Alaska Panhandle and mainland Alaska, Thu-Fri, Oct 10-Oct 11.
 
Detailed Summary:

Heavy snow and much below normal temperatures will feature during the medium range period 
(Thursday, Oct. 10 through Monday Oct. 14). A strong upper level trough will descend into the 
Northwest on Wednesday and produce heavy rain and snow for the Central Rockies and extending up 
through the Upper Mississippi Valley starting Thursday. Snowfall totals exceeding 6 inches are 
possible for parts of the Northern Plains and Upper Midwest on Friday with lesser amounts in the 
Central Rockies. The heavy snow will continue into Minnesota on Saturday before ending on Sunday. 
Ahead of the snow threat will be a risk of heavy rainfall between Thursday and Saturday as the 
surface low gathers strength from an amplifying upper level low and begins to ascend north toward 
Minnesota and eastern Ontario. Rainfall will impact much of the Upper/Middle Mississippi Valleys 
and down into the Southern Plains. Totals with this system are expected to be between 1-2 inches.

Behind the strong upper level disturbance will be a cool airmass that descends into much of the 
Northwest and Great Plains. Temperatures are expected to be up to 40 degrees below normal in 
eastern Wyoming on Thursday. The cool air will linger, but shift east over the Northern Plains by 
Friday and Saturday where temperatures could be between 10-20 degrees below normal. Seasonable 
temperatures are likely elsewhere across the U.S.. High winds of 25 kts are possible across parts 
of the Central Rockies and Northern/Central Plains. There is a chance for severe weather associated 
with this system over the Southern Plains on Thursday.

Meanwhile heavy rain is forecast to impact the far eastern portion of New England on Friday as a 
disturbance currently stationed near Bermuda propagates north. High winds and waves are possible 
for the New England coast as well with most of the higher winds amounts staying well out to sea. 
Heavy rain is possible for parts of the Northern Gulf and Panhandle of Alaska on Thursday and 
Friday as a low enters the region. Rainfall totals of up to 2.5 inches are possible with this 
system. Things should clear out as calm weather presides over the beginning of the next work week.

Kebede