Short Range Forecast Discussion
NWS Weather Prediction Center College Park MD
431 PM EDT Wed Aug 24 2022

Valid 00Z Thu Aug 25 2022 - 00Z Sat Aug 27 2022

...There is a Slight Risk of excessive rainfall over parts of the Lower
Mississippi Valley/Tennessee Valley/Western Gulf Coast through Thursday
morning...

...There is a Slight Risk of excessive rainfall over parts of the
Southwest and Northern Rockies through Thursday morning...

...There is a Slight Risk of excessive rainfall over parts of the Northern
Rockies and Lower Mississippi Valley/Tennessee Valley/Central Gulf Coast
from Thursday into Friday morning...

Tropical moisture, upper-level energy, and a weak front over parts of the
Western and Central Gulf Coast/Lower Mississippi Valley will aid in
producing showers and thunderstorms with heavy rain over parts of Texas,
Louisiana, Mississippi, and Alabama. Therefore, the WPC has issued a
Slight Risk of excessive rainfall over parts of the Lower Mississippi
Valley/Tennessee Valley through Thursday morning. The associated heavy
rain will create mainly localized areas of flash flooding, with urban
areas, roads, and small streams the most vulnerable.

The threat of excessive rainfall reduces slightly on Thursday over the
Central Gulf Coast/Lower Mississippi Valley. However, the system will
continue to produce showers and thunderstorms with heavy rain over the
area. Therefore, the WPC has issued a Slight Risk of excessive rainfall
over parts of the Central Gulf Coast, Lower Mississippi Valley, and
Tennessee Valley from Thursday into Friday morning. The associated heavy
rain will create mainly localized areas of flash flooding, with urban
areas, roads, and small streams the most vulnerable. Furthermore, on
Friday, the threat of excessive rainfall continues to reduce a Marginal
Risk of excessive rainfall over the region.

Meanwhile, an upper-level low over the Northwest will aid in producing
showers and thunderstorms with heavy rain over northern Idaho and
northwestern Montana through Friday. Therefore, the WPC has issued a
Slight Risk of excessive rainfall over parts of the Northern Rockies and
Northern High Plains through Friday morning. The associated heavy rain
will create mainly localized areas of flash flooding, with urban areas,
roads, and small streams the most vulnerable. On Friday, the threat of
excessive rainfall ends; however, showers and thunderstorms will continue
over parts of the region.

Moreover, monsoonal moisture and upper-level energy will aid in producing
diurnal showers and thunderstorms with heavy rain over parts of the
Southwest and Great Basin. Therefore, the WPC has issued a Slight Risk of
excessive rainfall over parts of the Southwest through Thursday morning.
The associated heavy rain will create mainly localized areas of flash
flooding, with urban areas, roads, and small streams the most vulnerable.
On Thursday, the threat of excessive rainfall reduces to a Marginal Risk
of excessive rainfall over the region through Friday.


Ziegenfelder


Graphics are available at
https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php