Alert archive / Wyoming / Winter Storm Warnings in 2026

Winter Storm Warning 2, NWS Riverton, WY

February 23, 20266 counties in Wyoming

NWS Riverton, WY issued this winter storm warning at Feb 23, 2026, 1:12 AM MST for 6 counties in Wyoming. It took effect at Feb 24, 2026, 5:00 AM MST. It was in force for 36 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Feb 23, 2026, 1:12 AM MST (08:12 UTC)
In effect from: Feb 24, 2026, 5:00 AM MST
Expired: Feb 25, 2026, 5:00 PM MST
In force: 36 hr
Issued by: NWS Riverton, WY

Counties Fremont County, WY, Hot Springs County, WY, Lincoln County, WY, Park County, WY, Sublette County, WY, Teton County, WY

The radar

The Riverton/Lander radar (KRIW), 100 km from the middle of the area, began a volume at 08:14 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Riverton, WY wrote its last area forecast discussion before this winter storm warning went out at Feb 22, 9:52 PM MST, 3 hours 20 minutes earlier.

Area forecast discussion, Feb 22, 9:52 PM MST, 3 hours 20 minutes before

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Hazardous weather outlook, Feb 22, 11:58 AM MST, 13 hours 14 minutes before

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<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Riverton, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 23, 12:45 AM MST	High Wind Warning	RIW	Fremont, Hot Springs, Johnson, Park, Sublette	40 hr
Feb 23, 1:12 AM MST	Winter Weather Advisory	RIW	Big Horn, Fremont, Johnson, Lincoln, Natrona, Teton and 1 more	59 hr
Feb 23, 2:56 AM MST	High Wind Watch	RIW	Fremont, Lincoln, Natrona, Sublette, Sweetwater	33 hr

Nearby

Winter Storm Warnings in Wyoming, 2026 Every winter storm warning in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.