NWS Jackson MSFF.W 0052August 21, 2026
Flash Flood Warning: Simpson, MS
The National Weather Service office in Jackson issued a flash flood warning for Simpson in Mississippi, which was in force until 7:00 p.m. local time on August 21. It was the 52nd flash flood warning the NWS office in Jackson issued in 2026. Mississippi had 5 flash flood warnings in August 2026, against 21 in an average August of 2008-2025 (Mississippi's flash flood warnings by year).
ExpiredWarning
In force for 1.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Jackson MS
- Area
- Simpson
- State
- Mississippi
- Level
- Warning
- Issued
- 5:06 p.m. CDT, August 21, 2026
- Expires
- 7:00 p.m. CDT, August 21, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- KJAN FF.W 0052
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWJAN The National Weather Service in Jackson has issued a * Flash Flood Warning for... Eastern Simpson County in central Mississippi... * Until 700 PM CDT. * At 506 PM CDT, local law enforcement reported thunderstorms producing heavy rain in Mendenhall. Between 3 and 4 inches of rain have fallen. The expected rainfall rate is 0.5 to 1 inch in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Law enforcement reported. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Magee, Mendenhall and Sanatorium.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.