US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
331 PM EDT Wed Jun 10 2020
 
Valid Saturday June 13 2020 - Wednesday June 17 2020
 
Hazards:
- Heavy rain across portions of the Southeast, Mon-Tue, Jun 15-Jun 16.
- Heavy rain across portions of the Mid-Atlantic and the Central Appalachians, Mon, Jun 15.
- 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, the Southeast, and the Great Lakes.
- Flooding likely across portions of the Northern/Central Plains, and the Middle Mississippi Valley.
- High winds across portions of the Northern/Central Plains, the Central/Southern Rockies, the 
Central Great Basin, and the Southwest, Sat, Jun 13.
- Much above normal temperatures across portions of the Central/Southern Plains, Wed, Jun 17.
- Much above normal temperatures across portions of the Northern/Central Plains, Sat, Jun 13.
- 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, Sat-Sun, Jun 13-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 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 Saturday. 
 Upper-level ridging over the Plains will aid in producing temperatures much above normal over the 
Northern High Plains on Saturday.  Upper-level energy will pass through the upper-level ridging 
bringing a brief relief from the heat before the upper-level ridging builds back over the Central 
High Plains on Wednesday producing a separate region of temperatures much above normal.  Meanwhile, 
a front over the Mid-Atlantic/Southeast Coast will stall out and linger over the area through 
Wednesday. The boundary will aid in producing showers and thunderstorms over parts of the southern 
tip of the Florida Peninsula on Monday into Tuesday. 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 Monday. 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 Saturday 
into 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