Alert archive / Oklahoma / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 633

August 24, 200210 counties in Oklahoma; 4 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Aug 24, 2002, 5:40 PM CDT for 10 counties in Oklahoma; 4 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Aug 24, 2002, 5:40 PM CDT (22:40 UTC)
Expired
Aug 24, 2002, 10:00 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center

Counties Beaver County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Harper County, OK, Major County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX

The radar

The Dodge City radar (KDDC), 146 km from the middle of the area, began a volume at 22:40 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.

Warnings issued inside it

6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 24, 5:49 PM CDTSevere Thunderstorm WarningAMAOchiltree56 min
Aug 24, 6:43 PM CDTSevere Thunderstorm WarningAMAOchiltree62 min
Aug 24, 6:54 PM CDTSevere Thunderstorm WarningAMARoberts66 min
Aug 24, 7:00 PM CDTSevere Thunderstorm WarningAMALipscomb60 min
Aug 24, 9:29 PM CDTSevere Thunderstorm WarningOUNDewey46 min
Aug 24, 9:48 PM CDTSevere Thunderstorm WarningOUNBeckham, Roger Mills, Washita42 min

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.7 hours before the alert went out and 212 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 2002-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 171 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 2002-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
171 J/kg
Mixed-layer CIN
-303 J/kg
Mixed-layer LCL
2290 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

Nearby

Severe Thunderstorm Watches in Oklahoma, 2002Severe Thunderstorm Watches in Texas, 2002Every severe thunderstorm watch in 2002

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.