Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 33, NWS Fort Worth, TX

March 29, 1997Henderson County, Navarro County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 29, 1997, 10:04 PM CST for Henderson County, Navarro County, Texas. It was in force for 56 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Mar 29, 1997, 10:04 PM CST (04:04 UTC)
Expired: Mar 29, 1997, 11:00 PM CST
In force: 56 min
Issued by: NWS Fort Worth, TX
Area: Whole counties

Counties Henderson County, TX, Navarro County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 118 km from the middle of the area, began a volume at 04:04 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.

What was reported inside it

Time	Report	Where	Remark
Mar 29, 10:25 PM CST	Hail 0.75	Corsicana, TX
Mar 29, 10:25 PM CST	Hail 0.75	Tool, TX

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 29, 10:00 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.1 hours before the alert went out and 131 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 990 J/kg
Mixed-layer CIN: -126 J/kg
Mixed-layer LCL: 1782 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 95 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFTW 300405 RRA
SVRFTW
TXC349-213-300500-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
1004 PM CST SAT MAR 29 1997
 
THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1100 PM CST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH CENTRAL TEXAS
 
   ...NAVARRO COUNTY
 
IN NORTHEAST TEXAS
 
   ...HENDERSON COUNTY
 
AT 1004 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A SEVERE
THUNDERSTORM 5 MILES EAST OF CORSICANA. MOVEMENT WAS EAST NORTHEAST AT
25 MPH. HAIL TO 1 1/2 INCHES IN DIAMETER...WINDS IN EXCESS OF 60 MPH...
DEADLY LIGHTNING AND VERY HEAVY RAIN CAN BE EXPECTED WITH THIS STORM.
 
WHEN THUNDERSTORMS ARE OCCURRING...YOU SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNTIL THE STORM HAS PASSED.  DO NOT DRIVE
INTO WATER CROSSING ROADWAYS.

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 29, 6:42 PM CST	Severe Thunderstorm Warning	FWD	Palo Pinto	48 min
Mar 29, 6:54 PM CST	Severe Thunderstorm Warning	FWD	Stephens	51 min
Mar 29, 7:02 PM CST	Severe Thunderstorm Warning	FWD	Young	43 min
Mar 29, 7:28 PM CST	Severe Thunderstorm Warning	FWD	Jack, Palo Pinto, Parker	62 min
Mar 29, 7:48 PM CST	Severe Thunderstorm Warning	FWD	Wise	57 min
Mar 29, 8:33 PM CST	Severe Thunderstorm Warning	FWD	Cooke, Denton	57 min
Mar 29, 9:45 PM CST	Severe Thunderstorm Warning	FWD	Collin	60 min
Mar 29, 9:46 PM CST	Severe Thunderstorm Warning	FWD	McLennan	59 min
Mar 29, 10:30 PM CST	Severe Thunderstorm Warning	FWD	Hunt	60 min
Mar 29, 10:51 PM CST	Severe Thunderstorm Warning	FWD	Delta, Hopkins	69 min

Nearby

Severe Thunderstorm Warnings in Texas, 1997 Every severe thunderstorm warning 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.