Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 57, NWS San Angelo, TX

July 7, 2002Kimble County, Texas

NWS San Angelo, TX issued this flash flood warning at Jul 7, 2002, 6:23 AM CDT for Kimble County, Texas. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 7, 2002, 6:23 AM CDT (11:23 UTC)
Expired: Jul 7, 2002, 12:15 PM CDT
In force: 6 hr
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Kimble County, TX

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 11.4 hours before the alert went out and 161 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: 2947 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1452 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KSJT 071123
FFWSJT
TXC267-071715-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
622 AM CDT SUN JUL 7 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  KIMBLE COUNTY IN SOUTH CENTRAL TEXAS

* UNTIL 1215 PM CDT

* AT 620 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN JUST WEST OF TELEGRAPH...OR ABOUT 15 MILES SOUTHWEST
  OF JUNCTION.  THE HEAVY RAINFALL WAS MOVING NORTH AT 5 MPH.

* THE THUNDERSTORM WITH EXCESSIVE RAINFALL WILL BE NEAR...
   ROOSEVELT AT 735 AM CDT
 

* RAINFALL TOTALING 2 TO 3 INCHES HAS FALLEN OVER SOUTHWEST KIMBLE 
  COUNTY...WITH ADDITIONAL RAINFALL UP TO 2 INCHES EXPECTED THROUGH 
  1215 PM CDT. THIS HEAVY RAIN WILL CAUSE FLOODING ALONG THE SOUTH 
  LLANO RIVER ALONG HIGHWAY 377 IN SOUTHWEST KIMBLE COUNTY. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS
THE ROADWAY. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

LAT...LON 3067 10010 3031 10009 3035 9961 3050 9957
          3066 9958

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 Jul 7, 2:13 AM CDT, 4 hours 10 minutes earlier.

Area forecast discussion, Jul 7, 2:13 AM CDT, 4 hours 10 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
213 AM CDT SUN JUL 7 2002

WATER VAPOR LOOP INDICATED UPPER TROUGH/SHEAR ZONE CONTINUING
OVER WEST CENTRAL TEXAS...WITH AN UPPER LEVEL LOW OVER EASTERN
NEW MEXICO. THE ATMOSPHERE REMAINS MOIST AND TROPICAL WITH DEW
POINTS IN THE LOWER 70S. 00Z SOUNDING AT MIDLAND AND DEL RIO WERE
RUNNING ABOUT 150 PERCENT OF NORMAL. RADAR AT 7Z INDICATED THE CIRCULATION
SOUTHWEST CROCKETT COUNTY...AS A MCS MOVED SOUTHEAST INTO MEXICO AND TOWARD
DEL RIO.

SCATTERED THUNDERSTORMS WERE REDEVELOPING NEAR SONORA AND OZONA. MIDNIGHT
HAS THE TIME FOR REDEVELOPMENT THIS WEEK...AND THIS COULD VERY WELL
DEVELOP OVER THE CONCHO VALLEY THIS MORNING. MAY SEE ANOTHER MCS DEVELOP
IN THE PERMIAN BASIN THIS AFTERNOON...CLOSER TO UPPER LOW IN NEW MEXICO...
AND MOVE INTO WESTERN SECTONS OF THE BIG COUNTRY/CONCHO VALLEY AGAIN.

MODEL INDICATE LITTLE MOVEMENT WITH UPPER FEATURES TODAY. BOTH AVN AND
ETA MODELS SHIFT THE SHEAR ZONE AND UPPER LOW TO THE SOUTHWEST ON MONDAY.
MODELS CONTINUE TO HAVE PROBLEMS DOING THIS HOWEVER...AND WILL
KEEP HIGHER POPS MONDAY (30 TO 40 PERCENT RANGE). PERHAPS SHEAR ZONE
WILL ACTUALLY MOVE WEST BY TUESDAY  WILL KEEP LOWER POPS IN PREVIOUS
FORECAST PACKAGE FOR TUESDAY AND BEYOND.

WITH THE EXTREME AMOUNTS OF RAIN THAT FELL THE LAST 24 HOURS...WILL PUT
IN FLASH FLOOD WATCH. EVEN IF THE MCS DOES NOT DEVELOP THIS MORNING...
AFTERNOON HEAT GENERATED STORMS COULD QUICKLY PRODUCE 3 TO 5 INCHES OF
RAIN. AFTERNOON/EVENING STORMS PROBABLY THE CASE FOR THE HARD HIT ABILENE
AND BROWNWOOD AREAS.

CCF PRELIMS...

ABI 086/070 090/071 091 6333
SJT 090/070 093/070 091 6533
JCT 090/070 093/070 090 4332

.SJT...FLASH FLOOD WATCH TODAY ALL COUNTIES.

04

In the hours before

Special weather statement, Jul 7, 5:30 AM CDT, 53 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-071500-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
530 AM CDT SUN JUL 7 2002

...FLASH FLOODING IS POSSIBLE ACROSS WEST CENTRAL TEXAS TODAY...

AN UPPER DISTURBANCE OVER THE REGION WILL CONTINUE TO INTERACT WITH
A MOIST TROPICAL AIR MASS...TO PRODUCE SCATTERED SHOWERS AND
THUNDERSTORMS.

THUNDERSTORMS THAT OCCUR WILL BE SLOW MOVING. ISOLATED AREAS COULD
SEE 3 TO 5 INCHES OF RAINFALL. MANY AREAS HAVE SATURATED SOIL
CONDITIONS. ANY ADDITIONAL RAIN WILL QUICKLY RUN OFF AND PRODUCE
FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT ACROSS THE REGION.

SPOTTER ACTIVATION MAY BE REQUIRED.

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT
HTTP://WWW.CRH.NOAA.GOV/EAX

04

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 10:14 PM CDT	Flash Flood Warning	SJT	Tom Green	3 hr
Jul 7, 1:28 AM CDT	Flash Flood Warning	SJT	Sutton	6 hr
Jul 7, 2:23 AM CDT	Flash Flood Warning	SJT	Crockett	4 hr
Jul 7, 2:48 PM CDT	Flash Flood Warning	SJT	Fisher	117 min
Jul 7, 2:57 PM CDT	Flash Flood Warning	SJT	Fisher	108 min
Jul 7, 3:03 PM CDT	Flash Flood Warning	SJT	Fisher	102 min
Jul 7, 5:02 PM CDT	Flash Flood Warning	SJT	Fisher	4 hr

Nearby

Flash Flood Warnings in Texas, 2002 Every flash flood warning in 2002

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.