Alert archive / Oklahoma / Flash Flood Warnings in 1996

Flash Flood Warning 37, NWS Norman, OK

October 21, 19964 counties in Oklahoma

NWS Norman, OK issued this flash flood warning at Oct 21, 1996, 9:38 AM CDT for 4 counties in Oklahoma. 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
Oct 21, 1996, 9:38 AM CDT (14:38 UTC)
Expired
Oct 21, 1996, 12:30 PM CDT
In force
3 hr
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Atoka County, OK, Bryan County, OK, Choctaw County, OK, Pushmataha County, OK

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 2.6 hours before the alert went out and 205 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-pSkew-T log-p diagram, Fort Worth, TX at 12:00Z on 1996-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2851 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 12:00Z on 1996-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
2851 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
681 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.9
Supercell composite
4.2

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.

NWS Norman, OK wrote its last area forecast discussion before this flash flood warning went out at Oct 21, 4:06 AM CDT, 5 hours 32 minutes earlier.

Area forecast discussion, Oct 21, 4:06 AM CDT, 5 hours 32 minutes before
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In the hours before

Special weather statement, Oct 21, 5:57 AM CDT, 3 hours 41 minutes before
<!doctype html>
<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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 20, 7:07 PM CDTTornado WarningOUNStephens38 min
Oct 20, 7:43 PM CDTTornado WarningOUNCarter, Stephens32 min
Oct 20, 8:07 PM CDTSevere Thunderstorm WarningOUNKingfisher53 min
Oct 20, 8:13 PM CDTSevere Thunderstorm WarningOUNComanche, Kiowa, Tillman47 min
Oct 20, 8:15 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Murray45 min
Oct 20, 8:15 PM CDTSevere Thunderstorm WarningOUNStephens45 min
Oct 20, 8:26 PM CDTSevere Thunderstorm WarningOUNLogan49 min
Oct 20, 8:30 PM CDTFlash Flood WarningOUNStephens3 hr
Oct 20, 8:55 PM CDTSevere Thunderstorm WarningOUNComanche50 min
Oct 20, 8:59 PM CDTSevere Thunderstorm WarningOUNCarter, Garvin, Murray46 min
Oct 20, 9:00 PM CDTSevere Thunderstorm WarningOUNNoble, Payne45 min
Oct 20, 9:15 PM CDTTornado WarningOUNMurray30 min
Oct 20, 9:20 PM CDTSevere Thunderstorm WarningOUNGrady, Stephens40 min
Oct 20, 9:40 PM CDTFlash Flood WarningOUNMurray3 hr
Oct 20, 9:40 PM CDTSevere Thunderstorm WarningOUNPayne50 min
Oct 20, 9:43 PM CDTTornado WarningOUNMurray32 min
Oct 20, 9:47 PM CDTSevere Thunderstorm WarningOUNCarter43 min
Oct 20, 9:49 PM CDTSevere Thunderstorm WarningOUNLincoln, Oklahoma41 min
Oct 20, 9:57 PM CDTSevere Thunderstorm WarningOUNGarvin, Grady, McClain, Stephens48 min
Oct 20, 10:02 PM CDTSevere Thunderstorm WarningOUNJohnston, Pontotoc43 min
Oct 20, 10:26 PM CDTSevere Thunderstorm WarningOUNCarter, Murray49 min
Oct 20, 10:26 PM CDTSevere Thunderstorm WarningOUNLincoln, Payne49 min
Oct 20, 10:35 PM CDTSevere Thunderstorm WarningOUNAtoka, Coal40 min
Oct 20, 10:41 PM CDTSevere Thunderstorm WarningOUNGarvin49 min
Oct 20, 10:45 PM CDTSevere Thunderstorm WarningOUNAtoka, Johnston60 min
Oct 20, 11:07 PM CDTSevere Thunderstorm WarningOUNMurray, Pontotoc53 min
Oct 20, 11:11 PM CDTSevere Thunderstorm WarningOUNCoal49 min
Oct 20, 11:37 PM CDTSevere Thunderstorm WarningOUNJohnston, Marshall53 min
Oct 20, 11:43 PM CDTSevere Thunderstorm WarningOUNAtoka, Pushmataha47 min
Oct 21, 12:01 AM CDTSevere Thunderstorm WarningOUNBryan29 min
Oct 21, 12:30 AM CDTSevere Thunderstorm WarningOUNAtoka, Bryan, Choctaw, Pushmataha60 min
Oct 21, 12:45 AM CDTSevere Thunderstorm WarningOUNMarshall30 min
Oct 21, 1:28 AM CDTSevere Thunderstorm WarningOUNBryan47 min
Oct 21, 1:32 AM CDTSevere Thunderstorm WarningOUNChoctaw, Pushmataha43 min
Oct 21, 2:53 AM CDTSevere Thunderstorm WarningOUNChoctaw67 min

Nearby

Flash Flood Warnings in Oklahoma, 1996Every 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.