151
AGUS74 KWCO 261303
HMDNWC

National Hydrologic Discussion - EXPERIMENTAL
NWS National Water Center - Tuscaloosa AL
700 AM CST WED NOV 26 2025

.Update...

The potential for hydrologic impacts is low across the Continental United
States for the next 7 days. Therefore, all highlighted areas have been
removed.

A limited flood area has been added to the Flood Hazard Outlook for the
American Samoa islands for the potential of flash flooding through at least
Friday.

//GKendrick

...Localized flash and urban flooding is possible through today in the
Southeast into the Tennessee Valley...

.Southeast into the Tennessee Valley...

Flash and urban flooding is possible through today in Central Alabama,
North Georgia, Southeast Tennessee, and far Western Carolinas as persistent
convection pushes east across the region, as reflected in the Limited
impacts area on the FHO. Current soil moisture is relatively low to normal
(1545% RSM, NASA SPoRT), which would typically mitigate immediate runoff.
However, two geographical factors in this region will counteract the drier
soils. The first is the terrain and geology the steep slopes of the
southern Appalachians and shallow depth to bedrock will promote rapid
runoff efficiency. The second is the seasonal vegetation due to the late
fall season, vegetation coverage is low, increasing potential for rapid and
excessive runoff. Consequently, while widespread river or small stream
flooding is unlikely due to the soil capacity, heavy pockets of
precipitation could still generate rapid runoff, resulting in localized
flash and urban flooding.

//DPL

Additional National Water Center products are available at
www.weather.gov/owp/operations




$$