Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 77, NWS San Angelo, TX

October 8, 2002Crockett County, Sutton County, Texas

NWS San Angelo, TX issued this flash flood warning at Oct 8, 2002, 12:12 AM CDT for Crockett County, Sutton 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
Oct 8, 2002, 12:12 AM CDT (05:12 UTC)
Expired
Oct 8, 2002, 6:00 AM CDT
In force
6 hr
Issued by
NWS San Angelo, TX
Area
Counties, with a storm outline in the text

Counties Crockett County, TX, Sutton 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, 5.2 hours before the alert went out and 142 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, Del Rio, TX at 00:00Z on 2002-10-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 737 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2002-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -50 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
737 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1533 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-50 m²/s²
0-3 km storm-relative helicity
57 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 
WGUS54 KSJT 080512
FFWSJT
TXC105-435-081100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1210 AM CDT TUE OCT 8 2002

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CROCKETT COUNTY IN SOUTHWEST TEXAS
  SUTTON COUNTY IN SOUTHWEST TEXAS

* UNTIL 600 AM CDT

* AT 1205 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED HEAVY     
  RAINS MOVING NORTH AT 10 MPH INTO THE SOUTHERN CORNER OF 
  CROCKETT...AND THE SOUTHWESTERN CORNER OF SUTTON COUNTY.

* RAINFALL TOTALING 4 TO 6 INCHES HAVE FALLEN IN THE WARNED AREA     
  SINCE MONDAY MORNING. ADDITIONAL RAINFALL AMOUNTS OF 3 INCHES CAN  
  BE EXPECTED BY 6 AM. THIS WILL PRODUCE FLOODING OF DRAWS AND LOW   
  WATER CROSSINGS. 

PEOPLE ALONG THE DRY DEVILS RIVER AND JOHNSON DRAW SHOULD LOOK FOR 
RAPIDLY RISING WATER. LOW WATER CROSSINGS ALONG RANCH ROAD 1973 AND 
STATE HIGHWAY 163 IN EASTERN CROCKETT COUNTY...AND RANCH ROADS 
189...864...1691...AND 1989 IN SUTTON COUNTY WILL LIKELY BECOME 
FLOODED AND IMPASSABLE.    

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 UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

LAT...LON 3032 10165 3030 10014 3070 10019 3068 10100
          3106 10101 3106 10166

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 Oct 7, 9:48 PM CDT, 2 hours 24 minutes earlier.

Area forecast discussion, Oct 7, 9:48 PM CDT, 2 hours 24 minutes before
WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
948 PM CDT MON OCT 7 2002

CURRENT FORECAST IN GOOD SHAPE TONIGHT AND WILL NEED TO MAKE ONLY A
FEW TWEAKS TO THE FORECAST. RAINFALL STARTING TO INTENSIFY ACROSS
PARTS OF CROCKETT COUNTY...WITH RAINFALL RATES NOW SHOWING AROUND A
QUARTER TO HALF INCH PER HOUR. DESPITE A LULL OF OVER 6 HOURS IN THE
HEAVY RAINFALL...MUCH OF THE NORTHERN EDWARDS PLATEAU REMAIN
SATURATED AND CAN NOT TAKE MUCH MORE ADDITIONAL RAINFALL. WIND
PROFILE FROM THE KDFX RADAR ALREADY SHOWING SOUTHEAST FLOW OF 30
KNOTS JUST OFF THE SURFACE...OVERRUNNING THE FRONTAL BOUNDARY ALONG
MY SOUTHERN BORDER.

AS IF IT WAS NOT PRETTY CLEAR ALREADY...LATEST MODELS ALSO SHOWING
HEAVY RAINFALL TO REDEVELOP AND CONTINUE ACROSS WEST CENTRAL
TEXAS...MAINLY THE WESTERN HALF. NEED TO UPDATE THE FFA TO ADJUST
THE EXPIRATION TIME AND TO TWEAK SOME WORDING...BUT DO NOT NEED TO
MAKE ANY CHANGES TO THE WATCH AREA.

.SJT...FLASH FLOOD WATCH TONIGHT ALONG AND WEST OF A ROTAN...ROBERT
LEE...SAN ANGELO AND SONORA LINE.

07
Hazardous weather outlook, Oct 7, 2:30 PM CDT, 9 hours 42 minutes before
TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-072330-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
230 PM CDT MON OCT 7 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL TEXAS.

.DAY ONE...
NUMEROUS SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE THROUGH TONIGHT
ACROSS ALL OF WEST CENTRAL TEXAS AS A SERIES OF UPPER LEVEL
DISTURBANCES MOVE ACROSS THE AREA AHEAD OF AN UPPER LEVEL STORM
SYSTEM ENTERING WEST TEXAS.  ALTHOUGH THUNDERSTORMS ARE NOT EXPECTED
TO BECOME SEVERE...LOCALIZED HEAVY RAINFALL WILL BE POSSIBLE.
ADDITIONAL HEAVY RAINFALL OVER AREAS SATURATED BY THIS MORNINGS
RAINFALL WILL NECESSITATE THE ISSUANCE OF A FLASH FLOOD WATCH FOR
THE WESTERN PORTION OF WEST CENTRAL TEXAS FROM 4 PM THROUGH
TONIGHT.

.SPOTTER CALL TO ACTION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

.DAYS TWO THROUGH SEVEN...

THE UPPER LEVEL STORM SYSTEM WILL MOVE ACROSS WEST CENTRAL TEXAS
EARLY TUESDAY.  THERE WILL BE A CONTINUED CHANCE FOR NUMEROUS
THUNDERSTORMS THROUGH TUESDAY AND INTO TUESDAY NIGHT...WITH
LOCALIZED HEAVY RAINFALL POSSIBLE. RAINFALL CHANCES WILL END ON
WEDNESDAY WITH DRY CONDITIONS EXPECTED THROUGH THE END OF THE WEEK.

15

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 8, 6:46 AM CDTFlash Flood WarningSJTCrockett, Schleicher, Sutton6 hr

Nearby

Flash Flood Warnings in Texas, 2002Every 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.