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Public safety / First published

Dense Fog Advisory issued Nov. 7, 2026 by NWS Aberdeen SD

Published automatically from public-record data. Whether a person reviewed any later version is recorded against that version below. This heading is the article's current headline.

Article identifier: alert-03f88975fcdadd2f18e67ca53cff64dba0dc7003-001-1

Read the live article →

Version history

Every published version of this article, newest first. Versions are append-only: a correction adds a row, it never rewrites history. Each version below states what changed against the version before it — which fields moved, and which body lines were added or removed.

The content hash is a SHA-256 fingerprint of that version's stored headline and body, computed when the version was written. Two versions with the same hash hold identical text; a changed hash proves the text moved. It is the tamper-evidence check — recompute it against an exported copy of a version and any silent edit shows up as a mismatch.

How we verify a hash — and how you can

Canonicalization: the hashed bytes are the version's stored headline, then the two characters ||, then the version's stored body markdown — UTF-8, SHA-256, lowercase hex. Nothing else is in the input: no normalization, re-wrapping or rendering is applied first, no trailing newline is added, and no other field (including the parent version's id) is mixed in.

Export a version's stored headline and body, join them with the two characters ||, and take the SHA-256 of the UTF-8 bytes. It must equal the hash printed beside that version. In a shell: 

printf '%s' "HEADLINE||BODY" | shasum -a 256

  1. Version 3

    Source update — the underlying public record changed

    Update from the source feed — no human edit

    The body text changed; the headline did not. (compared against version 2)

    Removed (1 line )

    • The National Weather Service superseded this message at 3:36 a.m. MST (4:36 a.m. CST) with a later one. This article records the message as issued.

    Added (1 line)

    • The National Weather Service superseded this message at 7:47 a.m. MST (8:47 a.m. CST) with a later one. This article records the message as issued.

    Content hash: 5441db4f704d97587c6bdba23e9891d52bb64db2bb551dd17c0ce2e477298f7f

  2. Version 2

    Wording carried forward. 605Buzz changed its own wording of this page after the previous entry and before the next one. This entry records the page as it read just before the source’s change, so the next entry shows only the source’s change. It does not say whether the earlier wording was right or wrong.

    Revised by 605Buzz — recorded under an internal label that names no person who read this version

    The body text changed; the headline did not. (compared against version 1)

    Removed (6 lines )

    • **NWS Aberdeen SD issued a Dense Fog Advisory** at 1:35 a.m. Mountain time (2:35 a.m. Central) Nov. 7, 2026, according to the National Weather Service's public alert record.
    • The alert states that it takes effect at 1:35 a.m. Mountain (2:35 a.m. Central), gives the onset as 1:35 a.m. Mountain (2:35 a.m. Central) and expires at 8 a.m. Mountain (9 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 8 a.m. Mountain (9 a.m. Central), which can differ from when the message expires.
    • The issuing office's own summary line, as written at 1:35 a.m. Mountain (2:35 a.m. Central):
    • The full text of the alert as issued at 1:35 a.m. Mountain (2:35 a.m. Central), reproduced without changes:
    • The National Weather Service superseded this message at 3:36 a.m. Mountain (4:36 a.m. Central) with a later one. This article records the message as issued.

    Added (6 lines)

    • **NWS Aberdeen SD issued a Dense Fog Advisory** at 1:35 a.m. MST (2:35 a.m. CST) Nov. 7, 2026, according to the National Weather Service's public alert record.
    • The alert states that it takes effect at 1:35 a.m. MST (2:35 a.m. CST), gives the onset as 1:35 a.m. MST (2:35 a.m. CST) and expires at 8 a.m. MST (9 a.m. CST). 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 8 a.m. MST (9 a.m. CST), which can differ from when the message expires.
    • The issuing office's own summary line, as written at 1:35 a.m. MST (2:35 a.m. CST):
    • The full text of the alert as issued at 1:35 a.m. MST (2:35 a.m. CST), reproduced without changes:
    • The National Weather Service superseded this message at 3:36 a.m. MST (4:36 a.m. CST) with a later one. This article records the message as issued.

    Content hash: 6d73d871dd1b24b7b9197c70f281c177845f1a16eb9bce2110ee5fda54619e55

  3. Version 1

    Initial publication

    Initial publication — no human byline

    No earlier version is in this record, so there is nothing to compare against.

    Content hash: 3ee4ec2b936b50dfff8bff9f2a1d835ab1b922ac115a12c917cc13fd2fc92f8a

1 correction has been issued.

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