Alert archive / Texas / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 176

April 22, 199712 counties in Oklahoma; 38 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Apr 22, 1997, 1:45 AM CDT for 12 counties in Oklahoma; 38 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
Apr 22, 1997, 1:45 AM CDT (06:45 UTC)
Expired
Apr 22, 1997, 6:00 AM CDT
In force
4 hr
Issued by
the Storm Prediction Center
All 50 counties

Bryan County, OK, Carter County, OK, Coal County, OK, Cotton County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Briscoe County, TX, Childress County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Cottle County, TX, Dallas County, TX, Denton County, TX, Dickens County, TX, Fisher County, TX, Foard County, TX, Grayson County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Jack County, TX, Jones County, TX, Kaufman County, TX, Kent County, TX, King County, TX, Knox County, TX, Montague County, TX, Motley County, TX, Palo Pinto County, TX, Parker County, TX, Rockwall County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Stonewall County, TX, Tarrant County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 22, 2:17 AM CDTSevere Thunderstorm WarningFWDMontague58 min
Apr 22, 2:18 AM CDTSevere Thunderstorm WarningOUNClay27 min
Apr 22, 2:19 AM CDTSevere Thunderstorm WarningFWDYoung56 min
Apr 22, 2:33 AM CDTSevere Thunderstorm WarningOUNBaylor, Knox42 min
Apr 22, 2:37 AM CDTSevere Thunderstorm WarningFWDJack68 min
Apr 22, 2:55 AM CDTSevere Thunderstorm WarningFWDCooke, Wise65 min
Apr 22, 3:03 AM CDTTornado WarningFWDJack57 min
Apr 22, 3:16 AM CDTSevere Thunderstorm WarningFWDThrockmorton44 min
Apr 22, 3:25 AM CDTSevere Thunderstorm WarningFWDDenton65 min
Apr 22, 3:43 AM CDTSevere Thunderstorm WarningFWDYoung62 min
Apr 22, 3:54 AM CDTSevere Thunderstorm WarningFWDCollin66 min
Apr 22, 3:54 AM CDTSevere Thunderstorm WarningFWDParker, Tarrant66 min
Apr 22, 4:19 AM CDTSevere Thunderstorm WarningFWDDallas56 min
Apr 22, 4:36 AM CDTSevere Thunderstorm WarningFWDJack, Wise69 min
Apr 22, 4:44 AM CDTSevere Thunderstorm WarningFWDHunt, Rockwall61 min
Apr 22, 4:54 AM CDTSevere Thunderstorm WarningFWDEllis, Kaufman66 min
Apr 22, 4:59 AM CDTSevere Thunderstorm WarningFWDCollin31 min

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 6.8 hours before the alert went out and 211 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, Fort Worth, TX at 00:00Z on 1997-04-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2364 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, Fort Worth, TX at 00:00Z on 1997-04-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
2364 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1547 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
167 m²/s²
Significant tornado parameter
0.5
Supercell composite
5.6

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
Apr 21, 9:00 PM CDTSevere Thunderstorm WatchSPCBeckham, Greer, Harmon, Jackson6 hr
Apr 22, 5:00 AM CDTSevere Thunderstorm WatchSPCBryan, Choctaw, McCurtain6 hr
Apr 21, 10:00 PM CDTSevere Thunderstorm WatchSPCBowie, Camp, Cass, Franklin, Gregg, Harrison and 9 more6 hr
Apr 22, 1:00 AM CDTTornado WatchSPCAnderson, Camp, Cass, Cherokee, Franklin, Freestone and 17 more5 hr
Apr 22, 1:15 PM CDTSevere Thunderstorm WatchSPCChambers, Galveston, Hardin, Harris, Jefferson, Liberty and 2 more6 hr

Nearby

Severe Thunderstorm Watches in Texas, 1997Severe Thunderstorm Watches in Oklahoma, 1997Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive.