US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
314 PM EDT Wed Aug 05 2020
 
Valid Saturday August 08 2020 - Wednesday August 12 2020
 
Hazards:
- Severe weather across portions of the Central Plains and the Northern Plains, Sat, Aug 8.
- Flooding possible across portions of the Mid-Atlantic and the Northeast.
- Flooding occurring or imminent across portions of the Middle Mississippi Valley, the 
Mid-Atlantic, and the Northern Plains.
- Heavy rain across portions of the Alaska Panhandle, Sat-Sun, Aug 8-Aug 9.
 
Detailed Summary:

The medium range period (Saturday, Aug. 8 to Wednesday, Aug. 12) will have very few large-scale 
weather hazards across the United States. The Storm Prediction Center has highlighted an area at 
risk for severe weather on Saturday across portions of North Dakota and northern Nebraska. The main 
threat will be damaging winds as thunderstorms develop ahead of a cold front and form into a 
possible MCS. Although no areas of heavy rain are indicated, locally heavy rainfall will be 
possible along and ahead of the aforementioned cold front as it progresses across the northern 
Plains and Great Lakes, before stalling across central Plains and Ohio Valley by early next week. 
Meanwhile, afternoon and early evening thunderstorms can be expected across the Florida peninsula 
through next Wednesday. Since impacts will likely be very local and hard to pin-point this far in 
advance, no heavy rain areas were added to the hazards chart. 

Temperatures are not expected to stray too far from normal across the country through next 
Wednesday and remain close to typical August conditions. A few areas that may notice a little extra 
heat include the central and southern High Plains, as well as Arizona and New Mexico, where high 
temperatures are forecast to run 5 to 10 degrees above average. High temperatures could also reach 
up to 10 degrees above average across the Great Lakes and New England early next week, this would 
equate to forecast highs in the upper-80s.

Meanwhile, a relatively active pattern is expected to continue for Alaska. Persistent rain and an 
approaching weather system could impact the Alaskan Panhandle on Saturday and Sunday. Total 
rainfall amounts of 1-3 inches are possible, with locally higher amounts along the coast. 
Considerable clouds and areas of rain will keep afternoon high temperatures cooler than normal 
across much of Alaska (especially the Panhandle), but overnight lows are expected to be near normal 
(slightly above normal for the interior). As we enter the beginning of next week, a low pressure 
system is expected to enter the Aleutian Islands and bring rain and gusty winds. Due to large 
uncertainty with this system, no hazard areas were added today, but could be added later this week.

Snell