Alert archive / Montana / Flash Flood Warnings in 2023

Flash Flood Warning 33, NWS Billings, MT

June 23, 2023Stillwater County, Montana

NWS Billings, MT issued this flash flood warning at Jun 23, 2023, 4:52 PM MDT for Stillwater County, Montana. It was in force for 2 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: Jun 23, 2023, 4:52 PM MDT (22:52 UTC)
Expired: Jun 23, 2023, 7:14 PM MDT
In force: 2 hr
Issued by: NWS Billings, MT
Area: Storm-based polygon
Flood severity: None

County Stillwater County, MT

The radar

The Billings radar (KBLX), 65 km from the middle of the area, began a volume at 22:53 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 nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 10.9 hours before the alert went out and 300 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 26 J/kg
Mixed-layer CIN: -247 J/kg
Mixed-layer LCL: 1054 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -17 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Billings, MT wrote its last area forecast discussion before this flash flood warning went out at Jun 23, 2:28 PM MDT, 2 hours 24 minutes earlier.

Area forecast discussion, Jun 23, 2:28 PM MDT, 2 hours 24 minutes before

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In the hours before

Special weather statement, Jun 23, 2:00 PM MDT, 2 hours 52 minutes before

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Special weather statement, Jun 23, 3:03 PM MDT, 1 hour 49 minutes before

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      <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">
        Please try again in a few minutes.
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Local storm report, Jun 23, 3:54 PM MDT, 58 minutes before

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      <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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Local storm report, Jun 23, 4:12 PM MDT, 40 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.
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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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Local storm report, Jun 23, 4:24 PM MDT, 28 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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Special weather statement, Jun 23, 4:24 PM MDT, 28 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 Billings, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 10:39 AM MDT	Winter Weather Advisory	BYZ	Carbon, Park, Stillwater, Sweet Grass	24 hr
Jun 23, 1:04 PM MDT	Special Weather Statement	BYZ	Big Horn	12 hr
Jun 23, 2:50 PM MDT	Flash Flood Warning	BYZ	Big Horn, Carbon	4 hr
Jun 23, 3:03 PM MDT	Special Weather Statement	BYZ		57 min
Jun 23, 3:21 PM MDT	Flash Flood Warning	BYZ	Stillwater	4 hr
Jun 23, 3:24 PM MDT	Areal Flood Advisory	BYZ	Big Horn, Rosebud	4 hr
Jun 23, 3:34 PM MDT	Flash Flood Warning	BYZ	Stillwater	4 hr
Jun 23, 3:37 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	38 min
Jun 23, 3:54 PM MDT	Flash Flood Warning	BYZ	Rosebud	4 hr
Jun 23, 4:08 PM MDT	Severe Thunderstorm Warning Considerable damage threat	BYZ	Powder River	29 min
Jun 23, 4:24 PM MDT	Special Weather Statement	BYZ	Carter	66 min
Jun 23, 5:18 PM MDT	Special Weather Statement	BYZ	Carter	57 min
Jun 23, 5:27 PM MDT	Flash Flood Warning	BYZ	Big Horn	3 hr
Jun 23, 5:39 PM MDT	Areal Flood Advisory	BYZ	Powder River	4 hr
Jun 23, 5:50 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	70 min
Jun 23, 12:50 PM MDT	Special Weather Statement	BYZ	Big Horn	40 min
Jun 23, 2:00 PM MDT	Special Weather Statement	BYZ	Sheridan	30 min

Nearby

Flash Flood Warnings in Montana, 2023 Every flash flood warning in 2023

Sources

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