Alert archive / Wyoming / Flash Flood Warnings in 1996

Flash Flood Warning 3, NWS Riverton, WY

June 21, 1996Fremont County, Wyoming

NWS Riverton, WY issued this flash flood warning at Jun 21, 1996, 2:38 PM MDT for Fremont County, Wyoming. It was in force for 3 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 21, 1996, 2:38 PM MDT (20:38 UTC)
Expired: Jun 21, 1996, 6:00 PM MDT
In force: 3 hr
Issued by: NWS Riverton, WY
Area: Whole counties

County Fremont County, WY

The radar

The Riverton/Lander radar (KRIW), 13 km from the middle of the area, began a volume at 20:24 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

Salt Lake City I, UT (KSLC), launched 12:00Z, 8.6 hours before the alert went out and 369 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2304 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 231 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 flash flood 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 21, 12:17 PM MDT, 2 hours 21 minutes before

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Special weather statement, Jun 21, 1:33 PM MDT, 1 hour 5 minutes before

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Special weather statement, Jun 21, 1:57 PM MDT, 41 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
Jun 21, 2:02 PM MDT	Severe Thunderstorm Warning	RIW	Fremont, Sublette	58 min
Jun 21, 2:28 PM MDT	Severe Thunderstorm Warning	RIW	Sweetwater	62 min
Jun 21, 2:56 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	59 min
Jun 21, 3:43 PM MDT	Severe Thunderstorm Warning	RIW	Fremont	62 min

Nearby

Flash Flood Warnings in Wyoming, 1996 Every flash flood 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; radar from the NEXRAD Level II archive.