Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 22, NWS San Angelo, TX

June 4, 2002Haskell County, Texas

NWS San Angelo, TX issued this flash flood warning at Jun 4, 2002, 7:52 PM CDT for Haskell 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: Jun 4, 2002, 7:52 PM CDT (00:52 UTC)
Expired: Jun 4, 2002, 10:45 PM CDT
In force: 3 hr
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

County Haskell 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 00:00Z, 0.9 hours before the alert went out and 236 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: 1816 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1578 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 65 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 050052
FFWSJT
TXC207-050345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
752 PM CDT TUE JUN 4 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

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

* UNTIL 1045 PM CDT

* AT 752 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY       
HEAVY RAINS OVER MOST OF HASKELL COUNTY. HEAVY RAIN WILL PERSIST 
OVER THE NEXT COUPLE OF HOURS.

* RAINFALL TOTALING 3 INCHES OF RAIN HAVE ALREADY OCCURRED OVER THE 
NORTHEASTERN PORTION OF HASKELL COUNTY...WITH ADDITIONAL RAINFALL UP 
TO TWO INCH EXPECTED THROUGH 1045 PM CDT.

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 3338 9996 3299 9996 3300 9949 3336 9954

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 4, 3:08 PM CDT, 4 hours 44 minutes earlier.

Area forecast discussion, Jun 4, 3:08 PM CDT, 4 hours 44 minutes before

WEST CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
308 PM CDT TUE JUN 4 2002

SHOWERS AND STORMS CONTINUE TO DEVELOP ACROSS THE SOUTH PLAINS AND
PANHANDLE THIS AFTERNOON...AS UPPER LOW SPINS TOWARD THE SOUTHERN
PLAINS. SOME ACTIVITY ALSO DEVELOPING ACROSS THE NORTHWEST BIG
COUNTRY. MOST ACTIVITY DEVELOPING IN THE UPPER DIVERGENCE AREA AND
ALONG A COLD FRONT STRETCHING FROM NEAR KLBB TO KOKC.

CONSIDERING ITS LOOK ON SATELLITE...STILL NOT SURE MODELS ARE DOING
JUSTICE TO THIS SYSTEM...WITH MODELS WEAKENING IT AS IT MOVES EAST.
AT THE SURFACE...COLD FRONT SHOULD CONTINUE ITS SOUTHWARD MOVEMENT.
MODELS PUSH THE FRONT INTO THE BIG COUNTRY BY MIDNIGHT...AND APPROACH
THE CENTRAL SECTIONS OF WEST CENTRAL TEXAS AROUND SUNRISE. AREAS
NORTH OF THE FRONT LOOK EXCELLENT FOR RAIN...AS NOSE OF THE LOW LEVEL
JET OVERRUNS THE FRONTAL BOUNDARY AND THE UPPER DIVERGENCE WITH THE
UPPER LOW COINCIDE AS WELL. WILL INCREASE POPS FOR TONIGHT ACROSS THE
BOARD. FINALLY...GIVEN THE HIGH MOISTURE CONTENT...850 MB DEWPOINT AT
KMAF THIS MORNING WAS 20 WITH PRECIPITABLE WATER VALUES PUSHING 200
PERCENT OF NORMAL...WILL MENTION LOCALLY HEAVY RAINFALL.

FRONT PUSHES THROUGH THE REST OF THE AREA WEDNESDAY MORNING...LEAVING
A COOLER DAY AS LOTS OF CLOUDS CONTINUE. MOST OF THE RAIN GRADUALLY
SHIFTS INTO THE SOUTHERN COUNTIES DURING THE DAY AND ESPECIALLY
WEDNESDAY NIGHT...AS A WEAKER SHORTWAVE ROUNDS THE BASE OF THE TROUGH
AND EJECTS ACROSS MAINLY THE SOUTHERN ZONES. CLOUDS DECREASE FOR
THURSDAY...WITH MORE SUN AND SLIGHTLY WARMER CONDITIONS.

EXTENDED WISE...UPPER RIDGE BUILDS BACK INTO THE AREA FOR THE FIRST
PART OF THE WEEKEND...BUT BY SUNDAY THE MRF SHOWS AN UPPER TROUGH
PASSING WELL TO THE NORTH DRIVING ANOTHER COLD FRONT INTO THE AREA.
ALREADY CARRYING SLIGHT CHANCE OF POPS FOR SUNDAY IN THE NORTH... AND
FOR MONDAY FOR THE CENTRAL AND SOUTHERN ZONES. THIS LOOKS GOOD FOR
NOW AND WILL NOT CHANGE.

CCF PRELIMS...

ABI 062/081/061/086 7531
SJT 067/084/062/087 5541
JCT 070/086/062/086 4552

.SJT...NONE.

07

In the hours before

Special weather statement, Jun 4, 1:56 PM CDT, 5 hours 56 minutes before

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-140-
154-155-168>170-041430-

WEST CENTRAL TEXAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
156 PM CDT TUE JUN 4 2002

...HEAVY RAIN WITH A FEW SEVERE STORMS EXPECTED IN THE BIG
COUNTRY TONIGHT...

A COLD FRONT WILL MOVE ACROSS THE BIG COUNTRY AFTER MIDNIGHT. WITH
THE APPROACH OF THE FRONT AND AN UNSTABLE AIRMASS...THUNDERSTORMS
WILL DEVELOP AND MOVE THROUGH MUCH OF WEST CENTRAL TEXAS. HOWEVER
HEAVY RAIN IS LIKELY IN THE BIG COUNTRY...WITH A FEW SEVERE STORMS
ALSO POSSIBLE. AFTER MIDNIGHT APPEARS TO BE THE BEST CHANCE FOR THESE
STORMS IN THE BIG COUNTRY.

THE PRIMARY SEVERE WEATHER THREATS WILL BE LARGE HAIL AND DAMAGING
WINDS. HEAVY RAIN WILL ALSO BE POSSIBLE...AND A QUICK ONE TO TWO
INCHES OF RAIN MAY OCCUR WITH THE STRONGER STORMS.

SPOTTER ACTIVATION MAY BE REQUIRED.

24

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 7:35 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	70 min
Jun 4, 8:04 PM CDT	Tornado Warning	SJT	Haskell	56 min
Jun 4, 8:11 PM CDT	Tornado Warning	SJT	Jones	64 min
Jun 4, 8:31 PM CDT	Tornado Warning	SJT	Throckmorton	59 min
Jun 4, 9:33 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	27 min

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.