Alert archive / Montana / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 145, NWS Billings, MT

August 27, 1997Custer County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Aug 27, 1997, 9:37 PM MDT for Custer County, Montana. It was in force for 63 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: Aug 27, 1997, 9:37 PM MDT (03:37 UTC)
Expired: Aug 27, 1997, 10:40 PM MDT
In force: 63 min
Issued by: NWS Billings, MT
Area: Whole counties

County Custer County, MT

The radar

The Glasgow radar (KGGW), 231 km from the middle of the area, began a volume at 03:38 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

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.6 hours before the alert went out and 232 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: 1641 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 2711 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 27, 8:30 PM MDT, 1 hour 7 minutes earlier.

Area forecast discussion, Aug 27, 8:30 PM MDT, 1 hour 7 minutes before

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In the hours before

Local storm report, Aug 27, 8:12 PM MDT, 1 hour 25 minutes before

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Local storm report, Aug 27, 8:13 PM MDT, 1 hour 24 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>
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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.
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      <p id="message2">
        Please try again in a few minutes.
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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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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 6:22 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	63 min
Aug 27, 11:49 PM MDT	Severe Thunderstorm Warning	BYZ	Fallon	61 min
Aug 28, 12:53 AM MDT	Severe Thunderstorm Warning	BYZ	Fallon	47 min

Nearby

Severe Thunderstorm Warnings in Montana, 1997 Every severe thunderstorm warning in 1997

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.