Alert archive / Texas / Flash Flood Warnings in 1997

Flash Flood Warning 32, NWS San Angelo, TX

June 8, 1997Nolan County, Taylor County, Texas

NWS San Angelo, TX issued this flash flood warning at Jun 8, 1997, 11:09 AM CDT for Nolan County, Taylor County, Texas. It was in force for 4 hr. 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 8, 1997, 11:09 AM CDT (16:09 UTC)
Expired: Jun 8, 1997, 3:10 PM CDT
In force: 4 hr
Issued by: NWS San Angelo, TX
Area: Whole counties

Counties Nolan County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 88 km from the middle of the area, began a volume at 16:09 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

Midland Regional, TX (KMAF), launched 12:00Z, 4.2 hours before the alert went out and 197 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: 1285 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 770 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 174 m²/s²
0-3 km storm-relative helicity: 188 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSJT 081610
FFWSJT
TXC353-441-082010-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1109 AM CDT SUN JUN 8 1997

THE NATIONAL WEATHER SERVICE IN SAN ANGELO TX HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 310 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTHWESTERN TEXAS

   ...NOLAN COUNTY
   ...TAYLOR COUNTY
 
AT 1100 AM...A STORM SPOTTER 4 MILES SOUTHWEST OF SWEETWATER
REPORTED 4 INCHES OF RAINFALL. THUNDERSTORMS WILL CONTINUE TO MOVE
EAST AT 20 MPH ACROSS MUCH OF NOLAN AND TAYLOR COUNTIES THROUGH 1 PM.
FLOODING IS LIKELY AS GROUNDS REMAIN SATURATED FROM PREVIOUS
RAINFALL.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROAdDWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.
 

&
15

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 San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at Jun 8, 10:30 AM CDT, 39 minutes earlier.

Area forecast discussion, Jun 8, 10:30 AM CDT, 39 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
1029 AM CDT SUN JUN 8 1997

BOW ECHO STORMS WILL WARRANT MENTION OF SEVERE IN BOTH LOCALS. WITH
LOW FFG VALUES FROM PREVIOUS RAINS...WILL REQUEST FFA FOR FTW ZONES.
WILL UP POPS TO LIKELY. WITH SATELLITE IMAGERY INDICATING CLEARING
SKIES BEHIND DEVELOPING MCS OVER THE AREA...WILL LOWER HIGHS ONLY
SLIGHTLY AT SJT AND A COUPLE CATEGORIES AT ABI. WILL MAKE SLIGHT
MODIFICATIONS TO WINZD DIRECTION. WILL UPDATE THUNDERSTORM OUTLOOK
SHORTLY TO ACCOMODATE LATEST SWODY1 UPDATE.

MO

In the hours before

Special weather statement, Jun 8, 5:47 AM CDT, 5 hours 22 minutes before

TXZ049-053-054-064>066-071>073-076>078-113-114-127-128-139-140-
154-155-168>170-090450-

WEST CENTRAL TEXAS THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
547 AM CDT SUN JUN 8 1997

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WEST OF A LINE
FROM OZONA TO MERTZON TO COLORADO CITY THROUGH THIS EVENING...

ABUNDANT MOISTURE REMAINS IN PLACE ACROSS WEST CENTRAL TEXAS TODAY.
WIDELY SCATTERED SHOWERS AND THUNDERSTORMS HAVE DEVELOPED DURING THE
MORNING ALONG A SURFACE TROUGH OVER FAR WEST TEXAS.  THESE
THUNDERSTORMS WILL MOVE NORTHEASTWARD AND MOVE INTO WEST CENTRAL
TEXAS TODAY. WITH AFTERNOON HEATING...THE ATMOSPHERE WILL BECOME
MODERATELY UNSTABLE. A FEW OF THE THUNDERSTORMS MAY REACH SEVERE
LEVELS THIS AFTERNOON...MAINLY WEST OF A LINE FROM OZONA TO MERTZON
TO COLORADO CITY WHERE THE INSTABILITY IS HIGHEST.  LARGE HAIL AND
DAMAGING WINDS WILL BE THE MAIN THREAT WITH THESE STORMS.  WIDELY
SCATTERED THUNDERSTORMS WILL ALSO BE POSSIBLE OVER THE REST OF WEST
CENTRAL TEXAS THIS AFTERNOON.  WITH WEAK WINDS IN THE UPPER LEVELS
OF THE ATMOSPHERE...THUNDERSTORMS ARE EXPECTED TO MOVE SLOWLY WHICH
COULD RESULT IN AREAS OF HEAVY RAINFALL AND LOCALIZED FLOODING.

SPOTTER ACTIVATION MAY BE REQUIRED. FOR THE SOUTHWEST TEXAS AND NEW
MEXICO OUTLOOK SEE PRODUCT LBBSPSMAF. FOR THE SOUTH PLAINS... THE
WESTERN PARTS OF NORTH TEXAS... NORTH CENTRAL TEXAS... AND SOUTH
CENTRAL TEXAS OUTLOOKS SEE PRODUCTS LBBSPSLBB... OKCSPSOKC...
FTWSPSFTW... AND SATSPSSAT.
08

Special weather statement, Jun 8, 10:57 AM CDT, 12 minutes before

TXZ049-053-054-064>066-071>073-076>078-113-114-127-128-139-140-
154-155-168>170-090955-

WEST CENTRAL TEXAS THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
1057 AM CDT SUN JUN 8 1997

...THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS WEST OF A
COLORADO CITY TO SAN ANGELO TO SONORA LINE...

...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE
REMAINDER OF WEST CENTRAL TEXAS...

A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL AFFECT MUCH OF WEST
CENTRAL TEXAS TODAY...CAPABLE OF PRODUCING LARGE HAIL...DAMAGING
WINDS...AND POSSIBLY TORNADOES. IN ADDITION...HEAVY RAINFALL RATES
IN EXCESS OF 2 INCHES PER HOUR WILL LIKELY CAUSE LOCALLIZED FLOODING.
THE THREAT OF FLOODING WILL BE GREATEST EAST OF A STAMFORD TO
SWEETWATER TO BALLINGER TO BRADY LINE WHERE PREVIOUS RAINS HAVE LEFT
THE GROUND NEARLY SATURATED.

ANOTHER ROUND OF THUNDERSTORMS CAN BE EXPECTED TO DEVELOP OVER THE
WESTERN HALF OF WEST CENTRAL TEXAS LATE THIS AFTERNOON AND THIS
EVENING AS SUNSHINE IS EXPECTED TO RETURN OVER THIS AREA DURING THE
AFTERNOON.

SPOTTER ACTIVATION WILL LIKELY BE NEEDED. FOR THE SOUTHWEST TEXAS
AND NEW MEXICO OUTLOOK SEE PRODUCT LBBSPSMAF. FOR THE SOUTH
PLAINS... THE WESTERN PARTS OF NORTH TEXAS... NORTH CENTRAL TEXAS...
AND SOUTH CENTRAL TEXAS OUTLOOKS SEE PRODUCTS LBBSPSLBB...
OKCSPSOKC... FTWSPSFTW... AND SATSPSSAT.

15

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 10:01 AM CDT	Severe Thunderstorm Warning	SJT	Tom Green	49 min
Jun 8, 10:14 AM CDT	Severe Thunderstorm Warning	SJT	Irion, Tom Green	61 min
Jun 8, 10:29 AM CDT	Tornado Warning	SJT	Tom Green	66 min
Jun 8, 10:43 AM CDT	Severe Thunderstorm Warning	SJT	Coke	62 min
Jun 8, 11:01 AM CDT	Flash Flood Warning	SJT	Tom Green	94 min
Jun 8, 12:42 PM CDT	Flash Flood Warning	SJT	Brown, Callahan, Coleman	4 hr
Jun 8, 2:12 PM CDT	Flash Flood Warning	SJT	Taylor	6 hr
Jun 8, 3:23 PM CDT	Flash Flood Warning	SJT	Nolan	4 hr
Jun 8, 4:04 PM CDT	Flash Flood Warning	SJT	Fisher, Mitchell	3 hr
Jun 8, 4:04 PM CDT	Flash Flood Warning	SJT	Sterling	3 hr
Jun 8, 5:24 PM CDT	Severe Thunderstorm Warning	SJT	Irion	76 min
Jun 8, 6:20 PM CDT	Flash Flood Warning	SJT	Irion, Tom Green	3 hr
Jun 8, 6:39 PM CDT	Tornado Warning	SJT	Schleicher	66 min

Nearby

Flash Flood Warnings in Texas, 1997 Every 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.