public-safety
Dense Fog Advisory issued Nov. 5, 2026 by NWS Rapid City SD
Dense Fog Advisory issued November 5 at 11:48PM MST until November 6 at 9:00AM MST by NWS Rapid City SD. Areas named: Northern Perkins; Northern Meade Co Plains; Ziebach; Southern Meade Co Plains; Southern Perkins.
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. See /about. This article was not shortened: every word below is the template's.
Key facts
- What
- Public safety
- When
- Record date Nov. 5, 2026; Added Nov. 6, 2026
- Source
- Weather alerts
- Read time
- About 3 minutes
NWS Rapid City SD issued a Dense Fog Advisory at 11:48 p.m. Mountain time Nov. 5, 2026 (12:48 a.m. Central Nov. 6), according to the National Weather Service's public alert record.
The alert states that it takes effect at 11:48 p.m. Mountain Nov. 5 (12:48 a.m. Central Nov. 6), gives the onset as midnight Mountain (1 a.m. Central) as Nov. 6 begins and expires at 9 a.m. Mountain (10 a.m. Central). It may reach both of South Dakota's time zones, so each time is given in both.
The alert separately states that the hazard itself ends at 9 a.m. Mountain (10 a.m. Central), which can differ from when the message expires.
Whether this alert is currently in effect is not stated in this text, deliberately: it depends on the time you are reading, so it is computed from the expiry above each time the page is loaded, rather than stored as an answer that would go out of date without anyone noticing.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 "Moderate", certainty "Likely" and urgency "Expected". Those are the National Weather Service's own categories, reproduced exactly, not re-ranked or translated into another scale.
The recommended response type on the message is "Execute".
The alert names these areas: Northern Perkins; Northern Meade Co Plains; Ziebach; Southern Meade Co Plains; Southern Perkins. The National Weather Service zone codes are SDZ002, SDZ013, SDZ014, SDZ073 and SDZ078.
The issuing office's own summary line, as written at 11:48 p.m. Mountain Nov. 5 (12:48 a.m. Central Nov. 6):
DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM MST FRIDAY
The full text of the alert as issued at 11:48 p.m. Mountain Nov. 5 (12:48 a.m. Central Nov. 6), reproduced without changes:
* WHAT...Visibility less than one quarter mile in dense fog. Visibilities will rapidly change, especially in low spots.
* WHERE...Northern Meade Co Plains, Northern Perkins, Southern Meade Co Plains, Southern Perkins, and Ziebach.
* WHEN...Until 9 AM MST Friday.
* IMPACTS...Low visibility could make driving conditions hazardous.
The protective-action text the issuing office attached, reproduced without changes:
If driving, slow down, use your headlights, and leave plenty of distance ahead of you.
The National Weather Service superseded this message at 1:36 a.m. Mountain (2:36 a.m. Central) Nov. 6 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. The alert is reproduced without added meteorological judgement. For live conditions and alerts, go to the National Weather Service.
Only alerts the National Weather Service gave a window of two hours or longer appear here, checked 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 here says nothing about whether one was issued. For those, and for live conditions, go to the National Weather Service.