Severe Thunderstorm Watch issued Sept. 8, 2026 by NWS Sioux Falls SD

Severe Thunderstorm Watch issued September 8 at 1:57AM CDT until September 8 at 2:00AM CDT by NWS Sioux Falls SD. Areas named: Aurora, SD; Bon Homme, SD; Charles Mix, SD; Clay, SD; Davison, SD; Douglas, SD; Gregory, SD; Hanson, SD; Hutchinson, SD; Lincoln, SD; McCook, SD; Minnehaha, SD; Turner, SD; Yankton, SD. Whether this alert is still in effect is shown on the page, computed from its stated expiry when you load it.

605Buzz automated newsroom, from public records Added Sept. 8, 2026 Record date Sept. 8, 2026

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. 8, 2026, 12:57 a.m. MDT / 1:57 a.m. CDT, according to the National Weather Service's public alert record.

The alert states an effective time of Sept. 8, 2026, 12:57 a.m. MDT / 1:57 a.m. CDT, an onset of Sept. 8, 2026, 12:57 a.m. MDT / 1:57 a.m. CDT, and an expiry of Sept. 8, 2026, 2 a.m. MDT / 3 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. 8, 2026, 1 a.m. MDT / 2 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so 605Buzz computes it from the expiry above each time the page is loaded rather than storing an answer that would go out of date without anyone noticing.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: Aurora, SD; Bon Homme, SD; Charles Mix, SD; Clay, SD; Davison, SD; Douglas, SD; Gregory, SD; Hanson, SD; Hutchinson, SD; Lincoln, SD; McCook, SD; Minnehaha, SD; Turner, SD; Yankton, SD. The National Weather Service zone codes are SDC003, SDC009, SDC023, SDC027, SDC035, SDC043, SDC053, SDC061, SDC067, SDC083, SDC087, SDC099, SDC125 and SDC135.

The full text of the alert as issued on Sept. 8, 2026, 12:57 a.m. MDT / 1:57 a.m. CDT, reproduced without changes:

THE NATIONAL WEATHER SERVICE WILL ALLOW SEVERE THUNDERSTORM WATCH 664 TO EXPIRE AT 2 AM CDT EARLY THIS MORNING FOR THE FOLLOWING AREAS

IN SOUTH DAKOTA THIS ALLOWS TO EXPIRE 14 COUNTIES

IN SOUTH CENTRAL SOUTH DAKOTA

AURORA CHARLES MIX DOUGLAS GREGORY

IN SOUTHEAST SOUTH DAKOTA

BON HOMME CLAY DAVISON HANSON HUTCHINSON LINCOLN MCCOOK MINNEHAHA TURNER YANKTON

THIS INCLUDES THE CITIES OF ALEXANDRIA, ARMOUR, AVON, BRIDGEWATER, BURKE, CANISTOTA, CANTON, CENTERVILLE, CHANCELLOR, CLAYTON, CORSICA, DELMONT, EMERY, FREEMAN, GREGORY, HARRISBURG, HURLEY, IRENE, LAKE ANDES, LENNOX, MARION, MARTY, MENNO, MITCHELL, MONTROSE, PARKER, PARKSTON, PLANKINTON, PLATTE, SALEM, SCOTLAND, SIOUX FALLS, SPRINGFIELD, STICKNEY, TABOR, TEA, TRIPP, TYNDALL, VERMILLION, VIBORG, WAGNER, WHITE LAKE, AND YANKTON.

The message carries no separate protective-action text.

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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