US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
314 PM EDT Wed Apr 17 2019
 
Valid Saturday April 20 2019 - Wednesday April 24 2019
 
Hazards:
- Heavy rain across portions of the Southern Plains, Tue-Wed, Apr 23-Apr 24.
- Flooding possible across portions of the Mid-Atlantic, the Lower Mississippi Valley, the 
Central/Southern Appalachians, the Northern Plains, the Tennessee Valley, the Great Lakes, the 
Northeast, the Upper Mississippi Valley, the Southern Plains, and the Ohio Valley.
- Flooding occurring or imminent across portions of the Northeast, the Northern Plains, the 
Mississippi Valley, and the Ohio Valley.
- Flooding likely across portions of the Southeast, the Upper Mississippi Valley, the Mid-Atlantic, 
the Northern Plains, and the Northern Great Basin.
- High winds across portions of the Central Plains and the Southern Plains, Sun-Mon, Apr 21-Apr 22.
- Heavy precipitation across portions of the Alaska Panhandle and mainland Alaska, Sat-Mon, Apr 
20-Apr 22.
- Heavy precipitation across portions of the Alaska Panhandle, Tue-Wed, Apr 23-Apr 24.
- High winds across portions of the Alaska Panhandle and mainland Alaska, Sat-Sun, Apr 20-Apr 21.
 
Detailed Summary:


The strength of the pressure gradient associated with another area of low pressure over the Central 
High Plains on Sunday will aid in producing an area of high wind of 34 mph and gust of 58 mph over 
parts of the Central/Southern Plains on Sunday. In addition, moist return flow off the Western Gulf 
of Mexico will intersect a quasi-stationary front over parts of Texas that will aid in producing 
and area of heavy rain over parts of Texas on Tuesday into Wednesday.

Recent rain and snow melt will aid in producing flooding over parts of the Northern Plains and the 
Upper/Middle Mississippi Valley. Flood water moving south in the Mississippi River and recent rain 
will aid in producing flooding over the Lower Mississippi Valley through Sunday.  Heavy rain over 
parts of the Northeast and the Mid-Atlantic on Thursday and Friday will aid in producing possible 
areas of flooding over the region from Saturday into Monday.   

Over Alaska, low pressure over the Gulf of Alaska will aid in streaming moisture into the Alaska 
Coast from Kenal Peninsula to near Yakutal that will aid in producing heavy precipitation over the 
region on Saturday into Monday.  In addition, the associated strong pressure gradient will aid in 
producing high wind over the coastal areas from Kenal Peninsula to near the northern portion of the 
Alaska Panhandle on Saturday into Sunday.  Onshore flow over the Alaska Panhandle will aid in 
producing an area of heavy precipitation over the area on Tuesday into Wednesday.   


Ziegenfelder