Alert archive / Texas / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 97, NWS Corpus Christi, TX

September 11, 1997Bee County, Texas

NWS Corpus Christi, TX issued this severe thunderstorm warning at Sep 11, 1997, 3:48 PM CDT for Bee County, Texas. It was in force for 57 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: Sep 11, 1997, 3:48 PM CDT (20:48 UTC)
Expired: Sep 11, 1997, 4:45 PM CDT
In force: 57 min
Issued by: NWS Corpus Christi, TX
Area: Whole counties

County Bee County, TX

The radar

The Corpus Christi radar (KCRP), 74 km from the middle of the area, began a volume at 20:48 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
Sep 11, 4:15 PM CDT	Thunderstorm Wind 50	Tynan, TX	NWS spotter report of strong thunderstorm wind gust.

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

Corpus Christi, TX (KCRP), launched 12:00Z, 8.8 hours before the alert went out and 86 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: 1795 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 976 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -58 m²/s²
0-3 km storm-relative helicity: -3 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCRP 112051 RRA
SVRCRP
TXC025-112145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
348 PM CDT THU SEP 11 1997
 
THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 PM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY......
 
IN SOUTH CENTRAL TEXAS
 
   ...BEE COUNTY
 
AT 346 PM CDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES
NORTHEAST OF SKIDMORE IN BEE COUNTY. MOVEMENT WAS TO THE SOUTHWEST AT 10
TO 15 MPH.
 
THIS STORM WILL PASS VERY NEAR THE CITY OF SKIDMORE NEAR 4PM.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Corpus Christi, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 11, 2:55 PM CDT, 53 minutes earlier.

Area forecast discussion, Sep 11, 2:55 PM CDT, 53 minutes before

COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
255 PM CDT THU SEP 11 1997

88D KCRP RADAR SHOWING ISOLATED RW/TRW IN REFUGIO AND CALHOUN
COUNTIES WITH LTL MOVMT NOTED.  PULSE TYPE ACTIVITY WITH THE
AFTERNOON HEATING AND SEA BREEZE.  THIS WILL ALL BE GONE WITH THE
SETTING OF THE SUN.  OTHERWISE NO SIGNIFICANT WX THRU THIS FCST
PERIOD AND REALLY NOTHING IN THE EXTENDED EITHER.

CROSS SECTION DATA FROM 12Z DATA SHOWS MOISTURE ON THE WAY OUT AS MID
AND UPPER LVL RIDGE REGAINS CONTROL.  AFTER 06Z FRI CRP/VCT SHOW
DRYING FROM H85 UP.  LRD HAS A LITTLE LESS DRYING AND IT BEGINS
LATER.  THIS WAS ALSO REFLECTED IN THE PWAT VALUES.  THE PWAT VALUES
REMAIN 1.60 TO 1.80 THRU 06Z SAT THEN 1.80 POOLS OVER WESTERN
SECTIONS OF THE CWA WHILE POCKET OF 1.20 TO 1.40 PREVAILS OVER
EASTERN SECTIONS.  THE MAIN PCPN THREAT WILL CONTINUE TO BE GENERATED
BY THERMAL EFFECT DURING THE NEXT TWO DAYS.  THUS WILL KEEP SOME
ISOLATED POPS IN THE PIX.

WNDS LOOK TO INCREASE AS LOW PRESSURE DEVELOPS IN THE CENTRAL AND
NORTHERN PLAINS.  H85 WNDS AT 12Z SHOW LLJ OVER S TX PANHANDLE AND N
TX.  WILL GO WITH 10 TO 20 FOR COASTAL LOCATIONS AND LRD AND 10 TO 15
VCT.  TEMPS WILL BE CLOSER TO MOS NUMBERS AND WILL STICK CLOSE.
AVN/MRF TOO COOL.

EXTENDED SHOWS NO MAJOR PLAYERS IN OUR WX PATTERN.  TROF/RIDGE/TROF
PATTERN WILL BE MAINTAINED.  TEMPS WILL REMAIN ABOVE NORMALS OF MID
SEP WHILE PCPN IS BELOW NORMAL.

TONIGHT...P/C.  E-SE WND NR 10 MPH...BECMG LGT VRBL FOR VCT...E-SE
WND 10 TO 15 MPH...BECMG LGT VRBL CRP...E-SE WND NR 10 MPH FOR LRD.

FRI...P/C WITH ISOLATED RW/TRW.  CHC OF RAIN LESS THAN 20 PERCENT.
E-SE WND 10 TO 15 MPH VCT...10 TO 20 MPH CRP/LRD.

FRI NIGHT...P/C.  SE WND NR 10 MPH VCT...10 TO 15 MPH CRP/LRD.

SAT...P/C.

CRP  BB  073/096 074/096 074 -1-1
NGP      078/091 079/091 079
ALI  BB  072/099 072/099 072 -1-1
LRD  BB  076/102 076/102 076 -1-1
VCT  BB  073/095 074/096 075 -1-1

MSL...73

The office that day

Everything else NWS Corpus Christi, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 11, 4:29 PM CDT	Severe Thunderstorm Warning	CRP	San Patricio	61 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.