Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 84, NWS San Angelo, TX

October 25, 20024 counties in Texas

NWS San Angelo, TX issued this flash flood warning at Oct 25, 2002, 9:05 AM CDT for 4 counties in Texas. It was in force for 3 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 25, 2002, 9:05 AM CDT (14:05 UTC)
Expired: Oct 25, 2002, 12:00 PM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

Counties Crockett County, TX, Menard County, TX, Schleicher 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 12:00Z, 2.1 hours before the alert went out and 160 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: 246 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 570 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 37 m²/s²
0-3 km storm-relative helicity: 89 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 251405
FFWSJT
TXC105-327-413-435-251700-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
904 AM CDT FRI OCT 25 2002

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SCHLEICHER COUNTY IN SOUTHWEST TEXAS
  MENARD COUNTY IN SOUTH CENTRAL TEXAS
  CROCKETT COUNTY IN SOUTHWEST TEXAS
  SUTTON COUNTY IN SOUTHWEST TEXAS

* UNTIL NOON CDT

* AT 857 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY 
  RAIN ACROSS THE NORTHERN EDWARDS PLATEAU...INTO THE NORTHWEST HILL 
  COUNTRY. 

* HOURLY RAINFALL UP TO 1 1/2 INCH WILL CONTINUE OVER MUCH OF THE    
  WARNED AREA...WITH LOCALIZED HOURLY RAINFALL TO 2 INCHES. MANY OF  
  THE ROADS ACROSS THE NORTHERN EDWARDS PLATEAU AND MENARD COUNTY    
  ARE EXPERIENCING FLOODING OF LOW WATER CROSSINGS. 


DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THE WATER DEPTH
MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. DO NOT ATTEMPT TO
DRIVE AROUND BARRICADES. MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES.

LAT...LON 3079 9950 3103 9968 3103 10190 3034 10158
          3052 10038 3076 10012

1 follow-up statement

000 
WGUS74 KSJT 251618
FFSSJT
TXC327-251700-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1113 AM CDT FRI OCT 25 2002

...A FLASH FLOOD WARNING REMAINS IN EFFECT FOR MENARD COUNTY UNTIL
1200 PM CDT...

AT 1111 AM CDT...THE MENARD COUNTY SHERIFF OFFICE REPORTED THAT 
HIGHWAY 864 AT FORT MCKAVETT WAS CLOSED DUE TO FLOODING.  FM ROAD 
2092 NEAR MENARD WILL LIKELY BE CLOSED AROUND NOON TODAY DUE TO 
FLOODING.

EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS WITH LOW WATER CROSSINGS...
NORMALLY DRY DRAWS AND ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS
OF CREEKS AND STREAMS. DO NOT DRIVE ACROSS AREAS WHERE WATER OF 
UNKNOWN DEPTH COVERS THE ROAD.  

MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO
CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT.

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 25, 3:45 AM CDT, 5 hours 20 minutes earlier.

Area forecast discussion, Oct 25, 3:45 AM CDT, 5 hours 20 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
345 AM CDT FRI OCT 25 2002

CURRENT...SATELLITE AND METAR DATA INDICATES CLOUDY SKIES DOMINATE
WEST CENTRAL TEXAS. AT THE SURFACE...TEMPERATURES REMAIN AT DEWPOINT
TEMPERATURES WITH ALL ASOS SITES ACROSS WEST CENTRAL TEXAS REPORTING
FOG.

DAYS 1-3...MODEL TIME-HEIGHT RELATIVE HUMIDITY ANALYSIS INDICATES
CLOUDY SKIES WILL CONTINUE TO DOMINATE WEST CENTRAL TEXAS THROUGH AT
LEAST SUNDAY. MINOR UPPER-LEVEL SHORT WAVES WILL PROVIDE SOME UPPER
SUPPORT FOR SHOWERS AND THUNDERSTORMS TODAY. HOWEVER...BELIEVE BEST
POPS WILL BE ACROSS OUR SOUTHWESTERN ZONES WHERE THE FRONTAL
BOUNDARY WILL ENHANCE LIFT. MODELS SUGGEST BEST UPPER SUPPORT WILL
MOVE OVER WEST CENTRAL TEXAS TONIGHT. HOWEVER...BELIEVE POPS WILL BE
LIMITED FOR MOST OF OUR CWFA. FOR TOMORROW AND TOMORROW NIGHT...WILL
CONTINUE LOW POPS WITH LIMITED UPPER SUPPORT. MODEL MOS TEMPERATURES
STILL WAY TOO HIGH WITH COLD-AIR ADVECTION DOMINATING AFTERNOON
HIGHS TODAY. NUMBERS CLOSE TO MAV MOS LOOK GOOD FOR TONIGHT THROUGH
SUNDAY. SURFACE NORTH WINDS WILL CONTINUE TO DOMINATE THROUGH
TOMORROW.

DAYS 4-7...A QUICK LOOK AT THE MRF JUST IN INDICATES NEXT MAJOR COLD
FRONT WILL PUSH THROUGH WEST CENTRAL TEXAS NEXT TUESDAY. MRF SURFACE
ANALYSIS SUGGESTS HIGHS TUESDAY MAY BE LOWER THAN PREVIOUS THINKING.
HOWEVER...WITH LIMITED TIME TO REVIEW THIS NEW DATA...WILL DEFER ANY
MAJOR ADJUSTMENTS TO TEMPERATURES TO THE DAY CREW.

CCF PRELIMS...

ABI 051/043/055/048 2322
SJT 058/047/058/048 2422
JCT 063/053/063/050 2432

.SJT...NONE.

23/HUBER

Hazardous weather outlook, Oct 25, 5:30 AM CDT, 3 hours 35 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-251615-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
530 AM CDT FRI OCT 25 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WEST CENTRAL TEXAS.

.DAY ONE...
AREAS ALONG AND WEST OF A LINE FROM ROBERT LEE...TO EDEN AND
JUNCTION...CAN EXPECT SCATTERED THUNDERSTORM ACTIVITY MAINLY THIS
MORNING. MOST OF THESE STORMS ARE NOT EXPECTED TO BECOME SEVERE.
HOWEVER A FEW OF THESE STORMS MAY PRODUCE SMALL HAIL...OF WHICH ONE
OR TWO STORMS MAY CONTAIN HAIL TO NEAR DIME SIZE.

.SPOTTER CALL TO ACTION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED.

.DAYS TWO THROUGH SEVEN...
WITH PERIODS OF SCATTERED THUNDERSTORMS...A FEW MAY CONTAIN HEAVY
RAIN AND SMALL HAIL THROUGH TUESDAY.

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 25, 11:55 AM CDT	Flash Flood Warning	SJT	Crockett	3 hr
Oct 25, 11:59 AM CDT	Flash Flood Warning	SJT	Menard	3 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.