US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
424 PM EDT Fri Jun 12 2020
 
Valid Monday June 15 2020 - Friday June 19 2020
 
Hazards:
- Heavy rain across portions of the Central Plains and the Middle Mississippi Valley, Thu-Fri, Jun 
18-Jun 19.
- Heavy rain across portions of the Southeast, the Central/Southern Appalachians, and the 
Mid-Atlantic, Mon-Wed, Jun 15-Jun 17.
- Flooding occurring or imminent across portions of the Mississippi Valley, the Northern Plains,  
the Southeast, the Great Lakes, and the Ohio Valley.
- Flooding likely across portions of the Upper/Middle Mississippi Valley, the Northern Plains, and 
the Northern Rockies.
- Much above normal temperatures across portions of the Northern/Central Plains, the Upper/Middle 
Mississippi Valley, and the Great Lakes, Mon-Thu, Jun 15-Jun 18.
 
Detailed Summary:

An upper-level ridge extending from the Southern Plains northeastward to the Upper Great Lakes will 
remain in place from Monday into Wednesday when upper-level troughing over the Northwest moves 
eastward to the Upper Great Lakes by Friday.  The upper-level ridging will allow temperatures to 
become 12 degrees above normal, starting in the Central Plains and building into the Great Lakes by 
Wednesday.  These conditions met the criteria for depicting and area of much above normal 
temperatures over the region.  

The front associated with the upper-level troughing will move eastward from the Northwest to the 
Great Lakes by Thursday.  By Friday, the front will become west-east orientated across the Central 
Plains into the Great Lakes.  Moisture will pool along the boundary aiding in the development of 
showers and thunderstorms from the Central Plains into the Middle Mississippi Valley on Thursday 
and Friday.  The rain will be heavy enough to met the criteria for heavy rain over the region from 
Thursday into Friday. 

An upper-level low over the Central Appalachians will induce a low along a front over the Southeast 
Coast on Monday.  The surface low will aid in producing showers and thunderstorms over the Southern 
Mid-Atlantic Coast on Monday into Wednesday.  The rain will be heavy enough to met the criteria for 
depicting an area of heavy rain over the region.     

No hazards are delineated over Alaska. 

Ziegenfelder