US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
336 PM EDT Mon Aug 03 2020
 
Valid Thursday August 06 2020 - Monday August 10 2020
 
Hazards:
- Flooding possible across portions of the central and southern Appalachians, the Mid-Atlantic, the 
Northeast, as well as the northern Plains.
- Flooding occurring or imminent across portions of the Mid-Mississippi Valley and the northern 
Plains.
- Flooding likely across portions of the northern Plains.
- Heavy rain across portions of the southern coastal areas of Alaska, Thu-Fri, Aug 6-Aug 7.
 
Detailed Summary:

With the expected departure of Isaias into eastern Canada, a more tranquil medium-range period is 
forecast for the entire mainland U.S.  Although no general areas of heavy rain are indicated, 
locally heavy rainfall could impact parts of the northern Plains and the mid-Mississippi Valley 
during the weekend as a stationary front drapping across the Plains returns as a warm front.  Rain 
associated with a frontal wave should slowly move off the Mid-Atlantic states during the weekend.  
Meanwhile, afternoon and early evening thunderstorms can be expected across the Florida peninsula 
through the medium-range period.  Temperatures are not expected to stray too far from normal across 
the country through next Monday as a Pacific cold front moves through the northwestern U.S. into 
the northern Plains.

Meanwhile, a relatively active pattern is expected to continue for Alaska.  A large occluded 
cyclone is forecast to make landfall across southwestern Alaska on Thursday--likely bringing heavy 
rain into much of the Kenai Peninsula Borough in southern Alaska on Thursday and Friday, together 
with some strong gusty winds and rough seas near the coast across the Alaska Peninsula.  The 
occluded cyclone is not expected to bring heavy rain into much of Alaska as the cyclone gradually 
weakens and dissipates over land.  Meanwhile, persistent rain and cool conditions are foreacst 
along the Alaska Panhandle.  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 (slighty above normal for the interior).

Kong