Alert archive / Wyoming / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 2, NWS Riverton, WY

June 12, 1996Sheridan County, Wyoming

NWS Riverton, WY issued this severe thunderstorm warning at Jun 12, 1996, 7:34 PM MDT for Sheridan County, Wyoming. It was in force for 56 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: Jun 12, 1996, 7:34 PM MDT (01:34 UTC)
Expired: Jun 12, 1996, 8:30 PM MDT
In force: 56 min
Issued by: NWS Riverton, WY
Area: Whole counties

County Sheridan County, WY

The nearest sounding before it

Riverton, WY (KRIW), launched 00:00Z, 1.6 hours before the alert went out and 227 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: 28 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 3141 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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.

In the hours before

Special weather statement, Jun 12, 6:09 PM MDT, 1 hour 25 minutes before

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Special weather statement, Jun 12, 6:34 PM MDT, 1 hour before

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Special weather statement, Jun 12, 6:42 PM MDT, 52 minutes before

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Special weather statement, Jun 12, 6:42 PM MDT, 52 minutes before

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Special weather statement, Jun 12, 7:10 PM MDT, 24 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.
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      <p id="message2">
        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 7:34 PM MDT	Severe Thunderstorm Warning	RIW	Washakie	56 min

Nearby

Severe Thunderstorm Warnings in Wyoming, 1996 Every severe thunderstorm warning in 1996

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.