US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
330 PM EDT Wed Mar 13 2019
 
Valid Saturday March 16 2019 - Wednesday March 20 2019
 
Hazards:
- Heavy rain across portions of the Southeast, Tue-Wed, Mar 19-Mar 20.
- Flooding possible across portions of the Plains, Mississippi Valley, the Tennessee Valley, and 
the Great Lakes.
- Flooding occurring or imminent across portions of the Southeast, the Middle/Lower Mississippi 
Valley, and the Ohio/Tennessee Valleys.
- Flooding likely across portions of the Northern/Central Plains, and the Upper/Middle Mississippi 
Valley.
- Much below normal temperatures across portions of the Southern Rockies, the Southern Plains, and 
the Southwest, Sat-Sun, Mar 16-Mar 17.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sat-Tue, Mar 
16-Mar 19.
- High winds across portions of the Alaska Panhandle and mainland Alaska, Sat-Tue, Mar 16-Mar 19.
 
Detailed Summary:

A deep surface low over Northeastern Canada will move northeastward out over the Labrador Sea by 
Sunday.  The associated trailing front will become quasi-stationary over the southern tip of the 
Florida Peninsula on Saturday through Wednesday with a wave of low pressure developing along the 
boundary just off of the southern tip of Florida on Wednesday.  The front will focus moisture a 
long and near the boundary producing heavy rain over parts of southern Florida on Tuesday into 
Wednesday.  Cold high pressure and deep upper-level trough will aid in producing an area of much 
below normal temperatures on Saturday into Sunday.   

In Alaska, a series of storms will move across parts of the North Pacific and move into the Gulf of 
Alaska on Saturday into Wednesday with a stream of moisture moving into the Gulf of Alaska Coast 
that will aid in producing heavy precipitation from the Alaska Peninsula to Prince William Sound 
and into parts of the Alaska Panhandle on Saturday into Tuesday. High wind is also possible from 
Kodiak Island to Prince William Sound into parts of the Alaska Panhandle on Saturday into Tuesday 
associated with the strong pressure gradient associated with the multiple storms moving into the 
area.

Ziegenfelder