Alert archive / Texas / Severe Thunderstorm Watches in 1997

Severe Thunderstorm Watch 93

March 5, 19977 counties in Oklahoma; 22 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Mar 5, 1997, 3:15 AM CST for 7 counties in Oklahoma; 22 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 5, 1997, 3:15 AM CST (09:15 UTC)
Expired
Mar 5, 1997, 9:00 AM CST
In force
6 hr
Issued by
the Storm Prediction Center
All 29 counties

Atoka County, OK, Bryan County, OK, Choctaw County, OK, Johnston County, OK, Marshall County, OK, McCurtain County, OK, Pushmataha County, OK, Camp County, TX, Collin County, TX, Dallas County, TX, Delta County, TX, Ellis County, TX, Fannin County, TX, Franklin County, TX, Grayson County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Morris County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 123 km from the middle of the area, began a volume at 09:14 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

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

IssuedProductOfficeCountiesLasted
Mar 5, 5:04 AM CSTSevere Thunderstorm WarningFWDKaufman41 min
Mar 5, 5:24 AM CSTSevere Thunderstorm WarningFWDRains, Van Zandt66 min

The nearest sounding before it

Shreveport, LA (KSHV), launched 00:00Z, 9.3 hours before the alert went out and 233 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, Shreveport, LA at 00:00Z on 1997-03-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 276 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, Shreveport, LA at 00:00Z on 1997-03-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
276 J/kg
Mixed-layer CIN
-47 J/kg
Mixed-layer LCL
820 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
183 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.7

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
Mar 4, 11:45 PM CSTSevere Thunderstorm WatchSPCCass5 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; radar from the NEXRAD Level II archive.