public-safety
Severe Thunderstorm Watch issued Sept. 1, 2026 by NWS Sioux Falls SD
Severe Thunderstorm Watch issued September 1 at 9:51PM CDT until September 2 at 5:00AM CDT by NWS Sioux Falls SD. Areas named: Cherokee, IA; Ida, IA; Lyon, IA; Plymouth, IA; Sioux, IA; Woodbury, IA; Dakota, NE; Dixon, NE; Union, SD. Whether this alert is still in effect is shown on the page, computed from its stated expiry when you load it.
Published automatically from public-record data — not yet reviewed by an editor. A language model shortens some articles by choosing whole sentences to delete; it cannot write, rephrase, reorder or add text, so every word is the template's. A person approves each one. See /about.
NWS Sioux Falls SD issued a Severe Thunderstorm Watch on Sept. 1, 2026, 8:51 p.m. MDT / 9:51 p.m. CDT, according to the National Weather Service's public alert record.
The alert states an effective time of Sept. 1, 2026, 8:51 p.m. MDT / 9:51 p.m. CDT, an onset of Sept. 1, 2026, 8:51 p.m. MDT / 9:51 p.m. CDT, and an expiry of Sept. 2, 2026, 4 a.m. MDT / 5 a.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. 2, 2026, 4 a.m. MDT / 5 a.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so 605Buzz computes it from the expiry above each time the page is loaded rather than storing an answer that would go out of date without anyone noticing.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 "Possible" and urgency "Future". 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 "Monitor".
The alert names these areas: Cherokee, IA; Ida, IA; Lyon, IA; Plymouth, IA; Sioux, IA; Woodbury, IA; Dakota, NE; Dixon, NE; Union, SD. The National Weather Service zone codes are IAC035, IAC093, IAC119, IAC149, IAC167, IAC193, NEC043, NEC051 and SDC127.
The full text of the alert as issued on Sept. 1, 2026, 8:51 p.m. MDT / 9:51 p.m. CDT, reproduced without changes:
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 640 UNTIL 5 AM CDT WEDNESDAY WHICH REPLACES A PORTION OF SEVERE THUNDERSTORM WATCH 639. THE NEW WATCH IS VALID FOR THE FOLLOWING AREAS
IN IOWA THE NEW WATCH INCLUDES 6 COUNTIES
IN NORTHWEST IOWA
CHEROKEE LYON PLYMOUTH SIOUX
IN WEST CENTRAL IOWA
IDA WOODBURY
IN NEBRASKA THE NEW WATCH INCLUDES 2 COUNTIES
IN NORTHEAST NEBRASKA
DAKOTA DIXON
IN SOUTH DAKOTA THE NEW WATCH INCLUDES 1 COUNTY
IN SOUTHEAST SOUTH DAKOTA
UNION
THIS INCLUDES THE CITIES OF ALCESTER, ALLEN, BATTLE CREEK, BERESFORD, CHEROKEE, ELK POINT, GEORGE, HAWARDEN, HOLSTEIN, HULL, IDA GROVE, INWOOD, JEFFERSON, LARCHWOOD, LE MARS, NORTH SIOUX CITY, ORANGE CITY, PONCA, ROCK RAPIDS, ROCK VALLEY, SIOUX CENTER, SIOUX CITY, SOUTH SIOUX CITY, AND WAKEFIELD.
The message carries no separate protective-action text.
The National Weather Service superseded this message at Sept. 2, 2026, 4:19 a.m. MDT / 5:19 a.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.
605Buzz publishes alerts the National Weather Service gave a window of two hours or longer, and checks once a day. Short-notice warnings — including tornado and severe thunderstorm warnings, which the service typically issues for under an hour — are NOT carried here, so their absence from this site says nothing about whether one was issued. For those, and for live conditions, go to the National Weather Service.