public-safety
Flash Flood Warning issued Sept. 7, 2026 by NWS Sioux Falls SD
Flash Flood Warning issued September 7 at 8:07PM CDT until September 7 at 11:00PM CDT by NWS Sioux Falls SD. Areas named: Charles Mix, SD. Whether this alert is still in effect is shown on the page, computed from its stated expiry when you load it.
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NWS Sioux Falls SD issued a Flash Flood Warning on Sept. 7, 2026, 7:07 p.m. MDT / 8:07 p.m. CDT, according to the National Weather Service's public alert record.
The alert states an effective time of Sept. 7, 2026, 7:07 p.m. MDT / 8:07 p.m. CDT, an onset of Sept. 7, 2026, 7:07 p.m. MDT / 8:07 p.m. CDT, and an expiry of Sept. 7, 2026, 10 p.m. MDT / 11 p.m. CDT. South Dakota spans two time zones and this alert may reach both, so each instant is shown in Mountain and then Central time; the office's own published offset is preserved in the machine-readable record.
The alert separately states that the hazard itself ends at Sept. 7, 2026, 10 p.m. MDT / 11 p.m. CDT. That is a different field from the message's expiry above and the two can differ.
Whether this alert is currently in effect is not stated in this text, deliberately: it depends on the time you are reading, so 605Buzz computes it from the expiry above each time the page is loaded rather than storing an answer that would go out of date without anyone noticing. The status shown at the top of this page is the computed one.
The issuing office classified this message as severity "Severe", certainty "Likely" and urgency "Immediate". Those are the National Weather Service's own categories, reproduced exactly; 605Buzz does not re-rank them or translate them into a scale of its own.
The recommended response type on the message is "Avoid".
The alert names these areas: Charles Mix, SD. The National Weather Service zone codes are SDC023.
The full text of the alert as issued on Sept. 7, 2026, 7:07 p.m. MDT / 8:07 p.m. CDT, reproduced without changes:
FFWFSD
The National Weather Service in Sioux Falls has issued a
* Flash Flood Warning for... Southeastern Charles Mix County in south central South Dakota...
* Until 1100 PM CDT.
* At 807 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 1 to 3 inches in 1 hour. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
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... Wagner, Marty, Dante and Yankton Sioux Tribal Nation.
The protective-action text the issuing office attached, reproduced without changes:
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.
Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely.
The National Weather Service superseded this message at Sept. 7, 2026, 9:48 p.m. MDT / 10:48 p.m. CDT with a later one. This article records the message as issued.
This alert is a work of the United States federal government — the National Weather Service, part of NOAA — and is in the public domain; no copyright is claimed on it and none is asserted here. 605Buzz reproduces the record and does not add meteorological judgement. For live conditions and alerts, go to the National Weather Service.
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