Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 172, NWS Norman, OK

May 30, 1997Tillman County, Oklahoma; Wichita County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 30, 1997, 2:44 AM CDT for Tillman County, Oklahoma; Wichita County, Texas. It was in force for 46 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
May 30, 1997, 2:44 AM CDT (07:44 UTC)
Expired
May 30, 1997, 3:30 AM CDT
In force
46 min
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Tillman County, OK, Wichita County, TX

What was reported inside it

TimeReportWhereRemark
May 30, 3:20 AM CDTHail 0.75Burkburnett, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 29, 10:15 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 7.7 hours before the alert went out and 173 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 1997-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 519 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, Norman, OK at 00:00Z on 1997-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.193958Sfc1 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
519 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1199 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
335 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.0

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.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 29, 9:40 PM CDT, 5 hours 4 minutes earlier.

Area forecast discussion, May 29, 9:40 PM CDT, 5 hours 4 minutes before
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In the hours before

Special weather statement, May 29, 10:56 PM CDT, 3 hours 48 minutes before
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Special weather statement, May 29, 10:59 PM CDT, 3 hours 45 minutes before
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Local storm report, May 29, 11:42 PM CDT, 3 hours 2 minutes before
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Local storm report, May 29, 11:44 PM CDT, 3 hours before
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Local storm report, May 30, 2:25 AM CDT, 19 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0225 AM CDT FRI MAY 30 1997

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

0155 AM    6 NE FREDRICK             OK   1.00 INCH HAIL
05/29/97   TILLMAN

J
Local storm report, May 30, 2:29 AM CDT, 15 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OKLAHOMA
0225 AM CDT FRI MAY 30 1997

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

0155 AM    6 NEd FREDRICK             OK   1.00 INCH HAIL
05/29/97   TILLMAN

J

The office that day

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

IssuedProductOfficeCountiesLasted
May 29, 7:10 PM CDTSevere Thunderstorm WarningOUNHarper65 min
May 29, 7:39 PM CDTSevere Thunderstorm WarningOUNEllis36 min
May 29, 8:00 PM CDTSevere Thunderstorm WarningOUNWoodward45 min
May 29, 8:05 PM CDTTornado WarningOUNEllis, Woodward25 min
May 29, 8:27 PM CDTTornado WarningOUNWoodward33 min
May 29, 8:31 PM CDTSevere Thunderstorm WarningOUNEllis44 min
May 29, 8:45 PM CDTTornado WarningOUNDewey, Ellis45 min
May 29, 8:55 PM CDTSevere Thunderstorm WarningOUNWoodward50 min
May 29, 9:28 PM CDTTornado WarningOUNCuster, Dewey47 min
May 29, 9:31 PM CDTSevere Thunderstorm WarningOUNEllis29 min
May 29, 9:45 PM CDTSevere Thunderstorm WarningOUNRoger Mills30 min
May 29, 10:15 PM CDTSevere Thunderstorm WarningOUNCuster45 min
May 30, 1:28 AM CDTSevere Thunderstorm WarningOUNTillman47 min
May 30, 2:16 AM CDTSevere Thunderstorm WarningOUNTillman29 min
May 30, 6:50 AM CDTFlash Flood WarningOUNCarter, Love, Marshall3 hr
May 30, 12:20 PM CDTFlash Flood WarningOUNCarter, Jefferson, Stephens2 hr
May 30, 3:28 AM CDTSevere Thunderstorm WarningOUNClay, Wichita47 min
May 30, 3:49 AM CDTFlash Flood WarningOUNClay, Wichita3 hr
May 30, 4:21 AM CDTSevere Thunderstorm WarningOUNArcher, Clay39 min
May 30, 4:59 AM CDTSevere Thunderstorm WarningOUNArcher, Clay31 min
May 30, 5:30 AM CDTSevere Thunderstorm WarningOUNClay30 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1997Severe Thunderstorm Warnings in Texas, 1997Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.