Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 21, NWS Midland/Odessa, TX

April 11, 1997Crane County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Apr 11, 1997, 12:34 AM CDT for Crane County, Texas. It was in force for 51 min. 1 report 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: Apr 11, 1997, 12:34 AM CDT (05:34 UTC)
Expired: Apr 11, 1997, 1:25 AM CDT
In force: 51 min
Issued by: NWS Midland/Odessa, TX
Area: Whole counties

County Crane County, TX

The radar

The Midland/Odessa radar (KMAF), 65 km from the middle of the area, began a volume at 05:34 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
Apr 11, 12:45 AM CDT	Hail 1	Crane, 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 nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 5.6 hours before the alert went out and 65 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: 1544 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 1434 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 164 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 9.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMAF 110534 RRA
SVRMAF
TXC103-110625-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIDLAND TX
1234 AM CDT FRI APR 11 1997

THE NATIONAL WEATHER SERVICE IN MIDLAND TX HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 125 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTHWESTERN TEXAS

   ...NORTHEASTERN CRANE COUNTY
 
AT 1233 AM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY MIDLAND
DOPPLER RADAR IN THE VICINITY OF CRANE MOVING NORTHEAST AT 35 MPH.

THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.
REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE
ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS.

$$

EARLE/MEAD

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 10, 9:53 PM CDT	Severe Thunderstorm Warning	MAF	Midland	32 min
Apr 10, 10:59 PM CDT	Severe Thunderstorm Warning	MAF	Scurry	46 min
Apr 10, 11:02 PM CDT	Severe Thunderstorm Warning	MAF	Scurry	43 min
Apr 10, 11:51 PM CDT	Severe Thunderstorm Warning	MAF	Dawson	49 min
Apr 10, 11:57 PM CDT	Severe Thunderstorm Warning	MAF	Ector	48 min
Apr 11, 12:02 AM CDT	Severe Thunderstorm Warning	MAF	Midland	48 min
Apr 11, 12:08 AM CDT	Severe Thunderstorm Warning	MAF	Martin	62 min
Apr 11, 12:47 AM CDT	Severe Thunderstorm Warning	MAF	Midland	48 min
Apr 11, 12:51 AM CDT	Severe Thunderstorm Warning	MAF	Upton	64 min
Apr 11, 1:02 AM CDT	Severe Thunderstorm Warning	MAF	Howard	48 min
Apr 11, 1:32 AM CDT	Severe Thunderstorm Warning	MAF	Midland	48 min
Apr 11, 1:42 AM CDT	Severe Thunderstorm Warning	MAF	Scurry	48 min
Apr 11, 2:02 AM CDT	Severe Thunderstorm Warning	MAF	Glasscock	48 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.