Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 340, NWS Norman, OK

June 20, 1992Greer County, Harmon County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 20, 1992, 1:12 AM CDT for Greer County, Harmon County, Oklahoma. It was in force for 63 min.

The area

The counties it named.

The facts

Issued
Jun 20, 1992, 1:12 AM CDT (06:12 UTC)
Expired
Jun 20, 1992, 2:15 AM CDT
In force
63 min
Issued by
NWS Norman, OK
Area
Whole counties

Counties Greer County, OK, Harmon County, OK

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 6.2 hours before the alert went out and 187 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, Amarillo Airport, TX at 00:00Z on 1992-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 700 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 00:00Z on 1992-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.1939587897Sfc1 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
700 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
2678 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
88 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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 19, 11:46 PM CDT, 1 hour 26 minutes before
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Local storm report, Jun 19, 11:49 PM CDT, 1 hour 23 minutes before
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Local storm report, Jun 19, 11:57 PM CDT, 1 hour 15 minutes before
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Special weather statement, Jun 20, 12:42 AM CDT, 30 minutes before
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Local storm report, Jun 20, 12:55 AM CDT, 17 minutes before
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Local storm report, Jun 20, 12:59 AM CDT, 13 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 8:22 PM CDTSevere Thunderstorm WarningOUNNoble38 min
Jun 19, 8:33 PM CDTSevere Thunderstorm WarningOUNKay57 min
Jun 19, 8:35 PM CDTSevere Thunderstorm WarningOUNDewey40 min
Jun 19, 8:52 PM CDTSevere Thunderstorm WarningOUNPayne53 min
Jun 19, 8:56 PM CDTSevere Thunderstorm WarningOUNNoble49 min
Jun 19, 9:09 PM CDTSevere Thunderstorm WarningOUNHarmon51 min
Jun 19, 9:09 PM CDTTornado WarningOUNPayne36 min
Jun 19, 9:16 PM CDTSevere Thunderstorm WarningOUNPayne44 min
Jun 19, 9:27 PM CDTSevere Thunderstorm WarningOUNNoble63 min
Jun 19, 9:54 PM CDTSevere Thunderstorm WarningOUNPayne66 min
Jun 19, 9:55 PM CDTSevere Thunderstorm WarningOUNGreer50 min
Jun 19, 10:08 PM CDTSevere Thunderstorm WarningOUNKiowa52 min
Jun 19, 10:18 PM CDTSevere Thunderstorm WarningOUNCaddo42 min
Jun 19, 10:26 PM CDTSevere Thunderstorm WarningOUNJackson49 min
Jun 19, 10:30 PM CDTSevere Thunderstorm WarningOUNLincoln, Logan60 min
Jun 19, 11:15 PM CDTSevere Thunderstorm WarningOUNGrady45 min
Jun 19, 11:21 PM CDTSevere Thunderstorm WarningOUNStephens69 min
Jun 19, 11:31 PM CDTSevere Thunderstorm WarningOUNLincoln, Pottawatomie59 min
Jun 19, 11:31 PM CDTSevere Thunderstorm WarningOUNSeminole59 min
Jun 20, 12:02 AM CDTSevere Thunderstorm WarningOUNCarter58 min
Jun 20, 1:03 AM CDTSevere Thunderstorm WarningOUNPontotoc42 min
Jun 20, 1:50 AM CDTSevere Thunderstorm WarningOUNKiowa40 min
Jun 20, 2:21 AM CDTSevere Thunderstorm WarningOUNTillman54 min
Jun 20, 2:46 AM CDTSevere Thunderstorm WarningOUNComanche44 min
Jun 20, 3:15 AM CDTSevere Thunderstorm WarningOUNCotton45 min
Jun 20, 6:12 AM CDTSevere Thunderstorm WarningOUNGreer48 min
Jun 20, 7:53 AM CDTSevere Thunderstorm WarningOUNTillman52 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 1992Every severe thunderstorm warning in 1992

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.