Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 697, NWS Norman, OK

October 21, 1996Marshall County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Oct 21, 1996, 12:45 AM CDT for Marshall County, Oklahoma. It was in force for 30 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
Oct 21, 1996, 12:45 AM CDT (05:45 UTC)
Expired
Oct 21, 1996, 1:15 AM CDT
In force
30 min
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Marshall County, OK

The radar

The Norman radar (KTLX), 153 km from the middle of the area, began a volume at 05:44 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

Norman, OK (KOUN), launched 00:00Z, 5.8 hours before the alert went out and 145 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, Norman, OK at 00:00Z on 1996-10-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2190 joules per kilogram.LCLEL10008507005003002001001 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, Norman, OK at 00:00Z on 1996-10-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
2190 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
1232 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 20, 10:28 PM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, Oct 20, 10:28 PM CDT, 2 hours 17 minutes before
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In the hours before

Local storm report, Oct 20, 8:10 PM CDT, 4 hours 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
814 PM CDT SUN OCT 20 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

8100 PM     KINGFISHER                 OK   1.00 INCH HAIL.
10/20/96   KINGFISHER

MCCAMMON
Local storm report, Oct 20, 8:41 PM CDT, 4 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
845 PM CDT SUN OCT 20 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

823 PM     DUNCAN                     OK   0.75 INCH HAIL.
10/20/96   STEPHENS

826 PM     CRESCENT                   OK   1.00 INCH HAIL.
10/20/96   LOGAN

836 PM     1 W ALPERS                 OK   0.75 INCH HAIL.
10/20/96   CARTER

MCCAMMON
Local storm report, Oct 20, 9:11 PM CDT, 3 hours 34 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
915 PM CDT SUN OCT 20 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

907d-912 PM LAWTON                     OK   1.75 INCH HAIL.
10/20/96   COMANCHE

MCCAMMON
Local storm report, Oct 20, 9:28 PM CDT, 3 hours 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
930 PM CDT SUN OCT 20 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

824 PM     3 SW SYNDER                OK  2 SHEDS...25 FT. BY 30 FT.
10/20/96   KIOWA/TILLMAN LINE             AND 25 FT. BY 50 FT. BLEW INTO
                                          THE WEST AND NORTH SIDE OF A
                                          HOUSE.  AS BOTH SHEDS WERE
                                          MOVING...THEY SMASHED A PARKED
                                          CAR.  NUMEROUS BOARDS ALSO
                                          BLEW INTO SAME HOUSE.
                                          ESTIMATED DAMAGE AT
                                          $50-75,000.  POWER LINES ALSO
                                          DOWN AT SAME LOCATION.

MCCAMMON
Local storm report, Oct 20, 9:41 PM CDT, 3 hours 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OKLAHOMA CITY OK
942 PM CDT SUN OCT 20 1996

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

937 PM     2 NE MARLOW                OK  1.00 INCH HAIL.
10/20/96   STEPHENS/GRADY LINE

939 PM     2 N DOUGHERTY              OK  70 MPH WIND.
10/20/96   MURRAY

MCCAMMON
Local storm report, Oct 20, 10:24 PM CDT, 2 hours 21 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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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, 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
Oct 21, 9:38 AM CDTFlash Flood WarningOUNAtoka, Bryan, Choctaw, Pushmataha3 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1996Every 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; radar from the NEXRAD Level II archive.