Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 32, NWS San Angelo, TX

July 3, 2002Callahan County, Texas

NWS San Angelo, TX issued this flash flood warning at Jul 3, 2002, 9:32 AM CDT for Callahan County, 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: Jul 3, 2002, 9:32 AM CDT (14:32 UTC)
Expired: Jul 3, 2002, 12:30 PM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Callahan 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

Fort Worth, TX (KFWD), launched 12:00Z, 2.5 hours before the alert went out and 209 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: 828 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 132 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 031432
FFWSJT
TXC059-031730-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
928 AM CDT WED JUL 3 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CALLAHAN COUNTY IN NORTH CENTRAL TEXAS

* UNTIL 1230 PM CDT

* AT 925 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED            
  THUNDERSTORMS WITH VERY HEAVY RAIN THROUGHOUT CALLAHAN COUNTY.
  THESE WERE MOVING SLOWLY NORTH AT 10 MPH...WITH ADDITIONAL 
  SHOWERS AND STORMS ENTERING THE COUNTY FROM THE SOUTH. 

* RAINFALL TOTALS OF 3 TO 6 INCHES HAVE ALREADY OCCURRED IN MUCH OF  
  CALLAHAN COUNTY...WITH 6 TO 8 INCHES OVER THE SOUTH-CENTRAL            
  PART OF THE COUNTY. AN ADDITIONAL 1 TO 2 INCHES CAN BE EXPECTED       
  THROUGH 1230 PM CDT. THIS WILL LIKELY CAUSE FLASH FLOODING.

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 3212 9960 3210 9915 3251 9914 3250 9960

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 3, 2:51 AM CDT, 6 hours 41 minutes earlier.

Area forecast discussion, Jul 3, 2:51 AM CDT, 6 hours 41 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
251 AM CDT WED JUL 3 2002

THIS IS OUR RAIN DAY...RAIN CHANCES FOR WC TX DONT GET ANY BETTER
IN JULY.

TROPICAL AIRMASS THUNDERSTORMS CONTINUED TO MOVE CLOSER TO OUR
FORECAST AREA OVERNIGHT...WITH RAIN PERSISTING OVER THE EASTERN
THIRD OF OUR COUNTIES.  AS THE SYSTEM SLOWLY MOVES WEST...RAIN WILL
PROGRESS WEST AS WELL.

RUC HAS DONE A VERY GOOD JOB OF HANDLING EARLY MORNING RAINS...SO
WILL PLACE HIGH CONFIDENCE IN RAIN AND GO ABOVE GUIDANCE.  GUIDANCE
TEMPS LOOK GOOD WITH CLOUDS AND RAIN.  WILL GO WITH 50-80 POPS OVER
ENTIRE AREA...WITH THE LOWEST CHANCES WEST.  RAIN CHANCES PERSIST
TONIGHT...WITH ABOVE AVERAGE POPS FOR THE 4TH...WITH THE HIGHEST
CHANCES WEST...WILL ALSO INCLUDE SMALL POPS FOR FIREWORKS PERIOD FOR
THE WEST HALF OF THE CWA.

ALAS IT IS JULY AND AS THE UPPER RIDGE BUILDS OVER THE
PLAINS...DRIER WARMER WEATHER TAKES HOLD FOR THE WEEKEND AND OUT
PERIODS.  WILL DISCOUNT GULF MOISTURE WORKING INTO WCENTRL TX LATE
IN THE WEEKEND AND EARLY NEXT WEEK...SO EXTENDED WORDING WILL STAY
DRY WITH SEASONAL TEMPS.

WILL RE-ISSUE THE FLASH FLOOD WATCH...WILL TAKE OUT SUTTON...SINCE
VERY LITTLE RAIN HAS FALLEN THAT FAR WEST SO FAR...BUT WILL ADD
BROWN CALLAHAN AND COLEMAN COUNTIES.

ABI 084/068/086/070 7432
SJT 084/069/086/070 7532
JCT 083/070/087/071 8321

.SJT...FLASH FLOOD WATCH FOR MASON...MENARD... MCCULLOCH...
KIMBLE...SAN SABA...BROWN...CALLAHAN...AND COLEMAN COUNTIES.

25

In the hours before

Special weather statement, Jul 3, 4:52 AM CDT, 4 hours 40 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-031430-

WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
452 AM CDT WED JUL 3 2002

...HEAVY RAINS POSSIBLE THROUGH TONIGHT OVER PORTIONS OF WEST
CENTRAL TEXAS...

A VERY MOIST...TROPICAL AIRMASS REMAINS IN PLACE ACROSS WEST CENTRAL
TEXAS. THIS AIRMASS...COMBINED WITH A NEARLY STATIONARY UPPER LEVEL
DISTURBANCE EXTENDING FROM THE LOWER RIO GRANDE VALLEY THROUGH
EASTERN TEXAS...WILL PRODUCE ISOLATED TO SCATTERED SHOWERS AND
THUNDERSTORMS THROUGH TONIGHT OVER MOST OF WEST CENTRAL TEXAS.

LOCALLY HEAVY RAINS ARE POSSIBLE DUE TO THE TROPICAL NATURE OF THE
ATMOSPHERE. RAINFALL AMOUNTS OF 2 TO 4 INCHES ARE POSSIBLE. A FLASH
FLOOD WATCH REMAINS IN EFFECT ALONG AND EAST OF A LINE FROM A
JUNCTION...MENARD...BRADY LINE UNTIL THIS AFTERNOON.

SPOTTER ACTIVATION IS NOT ANTICIPATED.

ADDITIONAL INFORMATION PLEASE SEE STATEMENTS AND OUTLOOKS FROM
NATIONAL WEATHER SERVICE OFFICES ACROSS TEXAS...OKLAHOMA...AND NEW
MEXICO.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 11:46 PM CDT	Flash Flood Warning	SJT	San Saba	6 hr
Jul 3, 2:45 AM CDT	Flash Flood Warning	SJT	Brown, Coleman	3 hr
Jul 3, 3:14 AM CDT	Flash Flood Warning	SJT	Callahan	3 hr
Jul 3, 3:18 AM CDT	Flash Flood Warning	SJT	Runnels	3 hr
Jul 3, 5:38 AM CDT	Flash Flood Warning	SJT	Coleman	3 hr
Jul 3, 8:35 AM CDT	Flash Flood Warning	SJT	Coleman	3 hr
Jul 3, 8:44 AM CDT	Flash Flood Warning	SJT	Brown	4 hr
Jul 3, 12:36 PM CDT	Flash Flood Warning	SJT	Brown	3 hr
Jul 3, 3:15 PM CDT	Severe Thunderstorm Warning	SJT	Crockett	30 min
Jul 3, 3:28 PM CDT	Flash Flood Warning	SJT	Brown	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.