Alert archive / Montana / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 7, NWS Great Falls, MT

May 13, 20265 counties in Montana

NWS Great Falls, MT issued this severe thunderstorm warning at May 13, 2026, 4:08 PM MDT for 5 counties in Montana. It was in force for 97 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 13, 2026, 4:08 PM MDT (22:08 UTC)
Expired: May 13, 2026, 5:45 PM MDT
In force: 97 min
Issued by: NWS Great Falls, MT
Area: Storm-based polygon
Damage threat: Considerable
Hail: 0.75 in
Wind: 70.0 mph

Counties Blaine County, MT, Chouteau County, MT, Fergus County, MT, Hill County, MT, Liberty County, MT

The radar

The Great Falls radar (KTFX), 132 km from the middle of the area, began a volume at 22:12 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 13, 12:50 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

What forecasters said that day

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

NWS Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at May 13, 1:51 PM MDT, 2 hours 17 minutes earlier.

Area forecast discussion, May 13, 1:51 PM MDT, 2 hours 17 minutes before

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In the hours before

Special weather statement, May 13, 3:36 PM MDT, 32 minutes before

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    <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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Local storm report, May 13, 3:48 PM MDT, 20 minutes before

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    <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.
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      <p id="message2">
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Local storm report, May 13, 3:51 PM MDT, 17 minutes before

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  <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.
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      <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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Special weather statement, May 13, 3:51 PM MDT, 17 minutes before

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<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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Local storm report, May 13, 3:53 PM MDT, 15 minutes before

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<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.
      </p>
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Local storm report, May 13, 4:04 PM MDT, 4 minutes before

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<head>
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  <title>Service Notice</title>
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</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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Great Falls, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 12, 11:48 PM MDT	High Wind Warning	TFX	Beaverhead, Blaine, Broadwater, Cascade, Chouteau, Fergus and 12 more	44 hr
May 13, 12:06 AM MDT	Winter Weather Advisory	TFX	Glacier, Pondera	35 hr
May 13, 12:59 PM MDT	Special Weather Statement	TFX	Madison	46 min
May 13, 1:59 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Lewis and Clark	35 min
May 13, 2:04 PM MDT	Special Weather Statement	TFX	Jefferson	41 min
May 13, 2:13 PM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Beaverhead, Madison	47 min
May 13, 2:31 PM MDT	Special Weather Statement	TFX	Judith Basin	29 min
May 13, 2:31 PM MDT	Special Weather Statement	TFX	Gallatin, Madison	44 min
May 13, 2:33 PM MDT	Special Weather Statement	TFX	Cascade	27 min
May 13, 2:46 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Chouteau, Fergus, Judith Basin	44 min
May 13, 2:50 PM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Cascade, Chouteau, Teton	40 min
May 13, 2:59 PM MDT	Severe Thunderstorm Warning	TFX	Broadwater, Jefferson	46 min
May 13, 3:28 PM MDT	Severe Thunderstorm Warning Considerable damage threat	TFX	Blaine, Cascade, Chouteau, Fergus, Hill, Judith Basin and 1 more	47 min
May 13, 3:36 PM MDT	Special Weather Statement	TFX	Beaverhead, Madison	54 min
May 13, 3:51 PM MDT	Special Weather Statement	TFX	Meagher	39 min
May 13, 5:22 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	38 min

Nearby

Severe Thunderstorm Warnings in Montana, 2026 Every severe thunderstorm 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.