Alert archive / Texas / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 647, NWS Norman, OK

July 20, 1995Knox County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Jul 20, 1995, 6:54 PM CDT for Knox County, Texas. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Jul 20, 1995, 6:54 PM CDT (23:54 UTC)
Expired
Jul 20, 1995, 7:45 PM CDT
In force
51 min
Issued by
NWS Norman, OK
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Knox County, TX

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.9 hours before the alert went out and 255 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 12:00Z on 1995-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 308 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, Amarillo Airport, TX at 12:00Z on 1995-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 20 square meters per square second.1939Sfc1 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
308 J/kg
Mixed-layer CIN
-150 J/kg
Mixed-layer LCL
1086 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
20 m²/s²
0-3 km storm-relative helicity
36 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 7:50 PM CDTSevere Thunderstorm WarningOUNEllis40 min
Jul 19, 8:29 PM CDTSevere Thunderstorm WarningOUNEllis46 min
Jul 20, 3:28 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Grady47 min
Jul 20, 3:57 PM CDTSevere Thunderstorm WarningOUNGarvin, Grady, McClain48 min
Jul 20, 4:18 PM CDTSevere Thunderstorm WarningOUNComanche27 min
Jul 20, 4:38 PM CDTSevere Thunderstorm WarningOUNGarvin, Grady67 min
Jul 20, 4:38 PM CDTSevere Thunderstorm WarningOUNComanche67 min
Jul 20, 6:25 PM CDTSevere Thunderstorm WarningOUNPontotoc35 min

Nearby

Severe Thunderstorm Warnings in Texas, 1995Every severe thunderstorm warning in 1995

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.