US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
425 PM EDT Tue Jul 30 2019
 
Valid Friday August 2 2019 - Tuesday August 6 2019
 
Hazards:
- Heavy rain across portions of the Central Plains, the Central Rockies, the Central Great Basin, 
the Southern Rockies, the Southern Plains, and the Southwest, Sun-Tue, Aug 4-Aug 6.
- Heavy rain across portions of the Central Plains, the Middle Mississippi Valley, the Lower 
Mississippi Valley, and the Southern Plains, Fri-Sat, Aug 2-Aug 3.
- Heavy rain across portions of the Southeast, Fri-Sun, Aug 2-Aug 4.
- Flooding possible across portions of the Upper Mississippi Valley and the Northern Plains.
- Flooding occurring or imminent across portions of the Lower Mississippi Valley and the Northern 
Plains.
- Flooding likely across portions of the Northern Plains.
- Heavy rain across portions of mainland Alaska, Fri, Aug 2.
- Heavy rain across portions of mainland Alaska, Sat, Aug 3.
- High winds across portions of mainland Alaska, Sat, Aug 3.
 
Detailed Summary:

A few areas in the continental U.S. could be impacted by heavy rain during the medium range period 
(Friday, August 2 through Tuesday, August 6).  Heavy rain is likely from southeast Nebraska to 
northern Arkansas for the end of the week as a mesoscale convective complex is expected to develop 
and track towards the southeast.  Farther west, monsoonal moisture interacting with a lee trough or 
low pressure center could lead to areas of heavy rain across portions of northern New Mexico and 
southern Colorado.  Over the southern half of Florida, moisture associated with a tropical wave is 
forecast to merge with a dissipating stationary front to result in enhanced rainfall.  The rain may 
become more widespread during the weekend as the tropical wave approaches from the Bahamas.  While 
the daily rainfall does not appear to be particularly heavy by Florida standards, the rain is 
expected to last through the first half of the medium range period.

For Alaska, a frontal system ahead of an occluded cyclone is expected to bring strong winds across 
much of the west coast of mainland Alaska late Friday and into Saturday.  The rain associated with 
the cold front is expected to bring heavy rain for the south-facing mountains in northwestern 
Alaska, with some rainfall totals in the 1 to 3 inch range possible.

The tropics east of Hawaii have become more active recently with the development of Hurricanes 
Erick and Flossie.  The latest forecast from the National Hurricane Center indicates that Erick 
will pass a couple hundred miles south of Hawaii as a weakening tropical storm from Friday into 
Saturday.  Possible effects for Hawaii could be some increase in northeasterly winds along with 
more frequent showers and increasing swells, particularly for the Big Island.  

Hamrick/Kong