Alert archive / Texas / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 609

July 15, 199745 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Jul 15, 1997, 1:15 PM CDT for 45 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Jul 15, 1997, 1:15 PM CDT (18:15 UTC)
Expired
Jul 15, 1997, 7:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 45 counties

Anderson County, TX, Angelina County, TX, Archer County, TX, Baylor County, TX, Bosque County, TX, Cherokee County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Ellis County, TX, Falls County, TX, Freestone County, TX, Grayson County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Houston County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Montague County, TX, Nacogdoches County, TX, Navarro County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, San Augustine County, TX, Smith County, TX, Somervell County, TX, Tarrant County, TX, Trinity County, TX, Van Zandt County, TX, Wise County, TX, Wood County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 72 km from the middle of the area, began a volume at 18:16 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

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

IssuedProductOfficeCountiesLasted
Jul 15, 1:37 PM CDTSevere Thunderstorm WarningFWDHunt, Rains68 min
Jul 15, 2:15 PM CDTSevere Thunderstorm WarningFWDCollin, Dallas, Grayson, Rockwall60 min
Jul 15, 2:50 PM CDTSevere Thunderstorm WarningSHVCherokee40 min
Jul 15, 3:21 PM CDTSevere Thunderstorm WarningFWDAnderson69 min
Jul 15, 3:35 PM CDTSevere Thunderstorm WarningFWDDallas, Denton, Tarrant55 min
Jul 15, 4:08 PM CDTSevere Thunderstorm WarningFWDTarrant52 min
Jul 15, 5:08 PM CDTSevere Thunderstorm WarningFWDMontague52 min
Jul 15, 5:27 PM CDTSevere Thunderstorm WarningFWDBosque, Hill63 min
Jul 15, 5:32 PM CDTSevere Thunderstorm WarningFWDMcLennan58 min
Jul 15, 5:34 PM CDTSevere Thunderstorm WarningOUNClay41 min
Jul 15, 6:10 PM CDTSevere Thunderstorm WarningOUNClay50 min
Jul 15, 6:13 PM CDTSevere Thunderstorm WarningFWDJack77 min

The nearest sounding before it

Fort Sill, OK (KFSI), launched 12:00Z, 6.3 hours before the alert went out and 277 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 Sill, OK at 12:00Z on 1997-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 430 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, Fort Sill, OK at 12:00Z on 1997-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -30 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
430 J/kg
Mixed-layer CIN
-235 J/kg
Mixed-layer LCL
1993 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
-30 m²/s²
0-3 km storm-relative helicity
29 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
Jul 15, 2:30 PM CDTSevere Thunderstorm WatchSPCFoard, Hardeman, Wichita, Wilbarger4 hr

Nearby

Severe Thunderstorm Watches in Texas, 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; radar from the NEXRAD Level II archive.