Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 49, NWS Corpus Christi, TX

June 21, 1997La Salle County, Texas

NWS Corpus Christi, TX issued this flash flood warning at Jun 21, 1997, 6:05 AM CDT for La Salle County, Texas. It was in force for 115 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 21, 1997, 6:05 AM CDT (11:05 UTC)
Expired
Jun 21, 1997, 8:00 AM CDT
In force
115 min
Issued by
NWS Corpus Christi, TX
Area
Whole counties

County La Salle County, TX

The radar

The Laughlin AFB radar (KDFX), 154 km from the middle of the area, began a volume at 11:04 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.

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 11.1 hours before the alert went out and 186 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, Corpus Christi, TX at 00:00Z on 1997-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3363 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Corpus Christi, TX at 00:00Z on 1997-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.193958Sfc1 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
3363 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
971 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
19 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

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

000 
TTAA00 KCRP 211107
FFWCRP
TXC283-211300-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
605 AM CDT SAT JUN 21 1997
 
THE NATIONAL WEATHER SERVICE IN CORPUS CHRISTI HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  800 AM CDT
FOR PEOPLE IN THE FOLLOWING COUNTY......
 
IN SOUTH CENTRAL TEXAS
 
   ...NORTHERN LA SALLE COUNTY
 
AT 604 AM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM PRODUCING
VERY HEAVY RAINFALL OVER NORTHERN LASALLE COUNTY...10 MILES NORTH OF
COTULLA NEAR THE COMMUNITIES OF WOODWARD AND MILLETT.  THE STORM WAS
MOVING SLOWLY EAST AT 15 MPH HOWEVER ADDITIONAL STORMS CONTINUE TO DEVEL
TO THE WEST AND WILL MOVE OVER THIS SAME AREA DURING THE NEXT FEW HOURS.
DOPPLER RADAR ESTIMATES OF 2 INCHES OF RAIN PER HOUR WERE OCCURRING WITH
THESE STORMS.  SMALL HAIL MAY ALSO ACCOMPANY THIS STORM.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS
OBSERVED...ACT QUICKLY. MOVE TO HIGH GROUND. DO NOT STAY IN
AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jun 21, 2:12 AM CDT, 3 hours 53 minutes earlier.

Area forecast discussion, Jun 21, 2:12 AM CDT, 3 hours 53 minutes before
COASTAL BEND FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CORPUS CHRISTI TX
215 AM CDT SAT JUN 21 1997

SIGNIFICANT RAINFALL EVENT TAKING SHAPE AND HAS BEEN ADVERTISED IN
MODELS LAST 3 RUNS.  AFTR COORD WITH EWX WILL ISSUE A FFA FOR ERN
2/3RD OF CWA INCLUDING DUVAL AND MCMULLEN CNTYS AND POINTS EWD.
UPPER LOW WILL DEEPEN OVER S TX WITH COOL POOL NOTED ALOFT.  NUMEROUS
VORT LOBES WILL ROUND THE BASE OF THE TROF FROM NW TX AND MX.  00Z
ETA RUN SHOWS LARGE SCALE LIFT FROM H85-700MB BENEITH STG DIFLUENCE
ALOFT.  30KT LLJ WILL STRENGTHEN TO 45KTS BY THIS EVENING PROVIDING
PLENTY OF INFLOW INTO VERY MOIST AND UNSTABLE ATMOS.  MOST DYNAMICS
ARE FOCUSED SOUTH OF HDO-CLL LINE TODAY WHERE 2-5 INCHES OF RAIN MAY
FALL.  FLASH FLOOD GUIDANCE IS LOW...BELOW 2 INCHES IN EACH COUNTY.
THEREFORE A WATCH WILL BE ISSUED THIS MORNING PERSISTING THROUGH
TNGT.

SCA'S WILL LIKELY BE NEEDED FOR THE COASTAL WATERS AND WILL BE
INCLUDED IN THE BAYS.  CLOUDS AND PRECIP WILL KEEP LARGE SCALE WINDS
FROM MIXING TO SFC OVER LAND THEREFORE WILL NOT ISSUE A WIND
ADVISORY.  S WINDS 15-25 MPH AND GUSTY CRP-VCT TDY.  SE WINDS 15-20
MPH LRD.  MOSTLY CLOUDY TODAY.

UPPER LOW SHIFTS SLGTLY TO THE NW TNGT WHILE DISTURBANCES CONTINUE TO
MOVE INTO S TX IN SUBTROP FLOW.  CONVECTIVE BNDRY ALG THE COAST WILL
PROVIDE THE FOCUS FOR PRECIP INTO SUNDAY.  45KT LOW LVL JET WILL KEEP
PWS NEAR 2.00 INCHES.  THEREFORE HVY RAIN AND FFA MAY BE EXTENDED TO
SUNDAY.  WILL KEEP TEMPS ON THE LOW SIDE DUE TO CLOUDS AND PRECIP.

PRELIMS...

CRP TT 088/075 088/076 6463 (LCLY HVY RAIN THRU SUNDAY)
NGP TT 087/076 087/076
VCT TT 087/074 086/074 7473 (LCLY HVY RAIN THRU SUNDAY)
LRD EE 093/075 095/076 4333 (LCLY HVY RAIN THIS MORNING)

JM...075

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 7:27 AM CDTSevere Thunderstorm WarningCRPLa Salle, McMullen63 min
Jun 21, 8:00 AM CDTFlash Flood WarningCRPMcMullen2 hr
Jun 21, 3:15 PM CDTFlash Flood WarningCRPGoliad, Victoria3 hr
Jun 21, 3:50 PM CDTTornado WarningCRPBee25 min
Jun 21, 4:52 PM CDTFlash Flood WarningCRPLive Oak3 hr
Jun 21, 5:36 PM CDTSevere Thunderstorm WarningCRPLive Oak, McMullen69 min
Jun 21, 6:40 PM CDTTornado WarningCRPLive Oak50 min
Jun 21, 6:47 PM CDTFlash Flood WarningCRPMcMullen58 min
Jun 21, 6:47 PM CDTSevere Thunderstorm WarningCRPMcMullen58 min

Nearby

Flash Flood Warnings in Texas, 1997Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.