Alert archive / Texas / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 731

September 8, 20014 counties in Oklahoma; 26 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Sep 8, 2001, 5:45 PM CDT for 4 counties in Oklahoma; 26 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Sep 8, 2001, 5:45 PM CDT (22:45 UTC)
Expired
Sep 9, 2001, 12:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 30 counties

Carter County, OK, Jefferson County, OK, Love County, OK, Marshall County, OK, Archer County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Erath County, TX, Haskell County, TX, Hood County, TX, Jack County, TX, Jones County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Shackelford County, TX, Stephens County, TX, Tarrant County, TX, Taylor County, TX, Throckmorton County, TX, Wise County, TX, Young County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Sep 8, 6:59 PM CDTSevere Thunderstorm WarningFWDStephens, Young61 min
Sep 8, 6:59 PM CDTSevere Thunderstorm WarningSJTShackelford46 min
Sep 8, 7:38 PM CDTSevere Thunderstorm WarningSJTShackelford37 min
Sep 8, 8:00 PM CDTSevere Thunderstorm WarningFWDStephens, Young60 min
Sep 8, 8:04 PM CDTSevere Thunderstorm WarningSJTCallahan41 min
Sep 8, 8:12 PM CDTSevere Thunderstorm WarningOUNArcher48 min
Sep 8, 8:27 PM CDTFlash Flood WarningSJTShackelford3 hr
Sep 8, 8:30 PM CDTTornado WarningSJTCallahan30 min
Sep 8, 8:38 PM CDTSevere Thunderstorm WarningFWDPalo Pinto52 min
Sep 8, 8:55 PM CDTSevere Thunderstorm WarningOUNClay, Wichita50 min
Sep 8, 9:00 PM CDTSevere Thunderstorm WarningOUNArcher45 min
Sep 8, 9:01 PM CDTTornado WarningSJTCallahan44 min
Sep 8, 9:07 PM CDTSevere Thunderstorm WarningOUNCarter, Jefferson38 min
Sep 8, 9:18 PM CDTSevere Thunderstorm WarningSJTBrown, Coleman57 min
Sep 8, 9:30 PM CDTSevere Thunderstorm WarningFWDHood, Palo Pinto, Parker60 min
Sep 8, 9:33 PM CDTTornado WarningSJTBrown, Coleman42 min
Sep 8, 9:58 PM CDTSevere Thunderstorm WarningFWDComanche62 min
Sep 8, 10:12 PM CDTTornado WarningSJTBrown33 min
Sep 8, 10:38 PM CDTSevere Thunderstorm WarningFWDJohnson, Tarrant67 min
Sep 8, 10:47 PM CDTSevere Thunderstorm WarningSJTBrown43 min
Sep 8, 10:51 PM CDTSevere Thunderstorm WarningSJTColeman54 min

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.8 hours before the alert went out and 272 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 12:00Z on 2001-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2001-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 106 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1774 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
106 m²/s²
0-3 km storm-relative helicity
174 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.

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 7, 7:00 PM CDTTornado WatchSPCAtoka, Carter, Cherokee, Cleveland, Coal, Comanche and 33 more5 hr
Sep 7, 10:30 PM CDTSevere Thunderstorm WatchSPCAdair, Atoka, Bryan, Cherokee, Choctaw, Coal and 14 more6 hr
Sep 8, 1:15 AM CDTSevere Thunderstorm WatchSPCMcCurtain5 hr
Sep 8, 3:00 PM CDTSevere Thunderstorm WatchSPCAdair, Atoka, Bryan, Cherokee, Choctaw, Coal and 14 more6 hr

Nearby

Severe Thunderstorm Watches in Texas, 2001Severe Thunderstorm Watches in Oklahoma, 2001Every severe thunderstorm watch in 2001

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.