US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
505 PM EDT Tue Jun 09 2020
 
Valid Friday June 12 2020 - Tuesday June 16 2020
 
Hazards:
- Heavy rain across portions of the Southeast, Sun-Mon, Jun 14-Jun 15.
- Heavy rain across portions of the Central/Southern Appalachians, and the Mid-Atlantic, Tue, Jun 
16.
- Flooding possible across portions of the Upper/Middle Mississippi Valley, the Great Lakes, the 
Northern Plains, and the Ohio Valley.
- Flooding occurring or imminent across portions of the Mississippi Valley, the Northern Plains, 
the Northern Rockies, and the Southeast.
- Flooding likely across portions of the Central Plains, the Central Great Basin, the Northern 
Plains, the Northern/Central Rockies, and the Middle Mississippi Valley.
- High winds across portions of the Northern/Central Great Basin, and the Southwest, Fri, Jun 12.
- High winds across portions of the Northern/Central Plains, the Central Great Basin, the Southern 
Rockies, and the Southwest, Sat, Jun 13.
- Enhanced wildfire risk across portions of the the Central Great Basin and the Southwest, Fri, Jun 
12.
- Enhanced wildfire risk across portions of the the Central Rockies, the Central Great Basin, and 
the Southwest, Sat, Jun 13.
- Much above normal temperatures across portions of mainland Alaska, Fri-Sun, Jun 12-Jun 14.
 
Detailed Summary:


A front moving across the Great Basin will aid in producing very strong wind and with low relative 
humidity will aid in producing conditions that are favorable for wildfires across parts of the 
Great Basin into parts of the Southwest on Friday into Saturday.  Associated with the front, will 
be a tight pressure gradient over parts of the Northern/Central High Plains, the Central Rockies, 
Great Basin, and the Southwest that will aid in producing areas of high wind across the region also 
on Friday into Saturday.   Meanwhile, a front over the Great Lakes will move to the 
Mid-Atlantic/Southeast Coast by Saturday.  The front will stall out and linger over the area 
through Tuesday.  The boundary will aid in producing showers and thunderstorms over parts of the 
southern tip of the Florida Peninsula on Sunday into Monday.  The associated rain will meet the 
criteria for heavy rain over the region.  Energy will move along the front aiding in producing 
showers and thunderstorms over parts of the Mid-Atlantic on Tuesday.  Likewise, the criteria will 
be met for a region of heavy rain over parts of the Mid-Atlantic.  

Over Alaska, much warmer than normal temperatures will develop across the northwestern part of the 
state with the potential for near threshold warmth over the northern-most regions from Friday to 
Sunday.  Meanwhile, topographically-induced/enhanced precipitation is also expected to linger 
across the mainland each afternoon throughout the interior. Fire potential is most concerning in 
the Yukon Flats but increased thunderstorm potential, particularly in Interior Alaska, along 
thermal troughs running through mainland Alaska compounded by parched/favorable fuels could spark a 
number of starts.

Ziegenfelder