US Day 3-7 Hazards Outlook
NWS Weather Prediction Center College Park MD
314 PM EDT Thu May 02 2019
 
Valid Sunday May 05 2019 - Thursday May 09 2019
 
Hazards:
- Heavy rain across portions of the Lower Mississippi Valley and the Southern Plains, Tue-Wed, May 
7-May 8.
- Heavy rain across portions of the Middle Mississippi Valley, the Lower Mississippi Valley, the 
Southern Plains, the Ohio Valley, and the Tennessee Valley, Thu, May 9.
- Severe weather across portions of the Central Plains, the Middle Mississippi Valley, the Upper 
Mississippi Valley, and the Northern Plains, Mon, May 6.
- Flooding possible across portions of the Central Plains, the Lower Mississippi Valley, the Great 
Lakes, the Middle Mississippi Valley, the Upper Mississippi Valley, the Southern Plains, and the 
Ohio Valley.
- Flooding occurring or imminent across portions of the Central Plains, the Lower Mississippi 
Valley, the Northern Plains, the Great Lakes, the Middle Mississippi Valley, the Upper Mississippi 
Valley, the Southern Plains, and the Ohio Valley.
- Flooding likely across portions of the Central Plains, the Middle Mississippi Valley, the Great 
Lakes, and the Ohio Valley.
- Heavy precipitation across portions of mainland Alaska, Tue-Wed, May 7-May 8.
 
Detailed Summary:

An active weather pattern will persist across the south central U.S. Moisture from the Gulf of 
Mexico will interact with a slow moving frontal boundary to generate multiple rounds of showers and 
thunderstorms Tue-Thu. Rain is expected to be heavy at times, some of which may fall across areas 
that have already seen recent heavy rains. The heaviest rains are expected to focus in a band from 
northeast Texas through much of Arkansas into extreme southeast Missouri and western 
Kentucky/Tennessee, where 2-4 inches (with locally higher amounts) are possible. Farther north, 
severe thunderstorms will also be possible across portions of the Central/Northern Plains and the 
Midwest on Mon. Showers and thunderstorms across these areas will focus along a stationary surface 
frontal boundary, with additional support provided by an approaching upper-level disturbance.

Meanwhile, a couple frontal systems and upper-level disturbances affecting southern mainland Alaska 
during the Tue-Wed time frame will result in the potential for heavy precipitation for portions of 
the Kenai Peninsula and areas along western Prince William Sound.

Ryan