Alert archive / Texas / Flash Flood Warnings in 2002

Flash Flood Warning 41, NWS Fort Worth, TX

August 27, 2002Fannin County, Texas

NWS Fort Worth, TX issued this flash flood warning at Aug 27, 2002, 7:27 AM CDT for Fannin 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: Aug 27, 2002, 7:27 AM CDT (12:27 UTC)
Expired: Aug 27, 2002, 10:15 AM CDT
In force: 3 hr
Issued by: NWS Fort Worth, TX
Area: Counties, with a storm outline in the text

County Fannin County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 156 km from the middle of the area, began a volume at 12:29 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 0.5 hours before the alert went out and 136 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: 1521 J/kg
Mixed-layer CIN: -246 J/kg
Mixed-layer LCL: 1637 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 99 m²/s²
0-3 km storm-relative helicity: 146 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

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

000 
WGUS54 KFWD 271227
FFWFTW
TXC147-271515-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE FORT WORTH TX
728 AM CDT TUE AUG 27 2002

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

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

* UNTIL 1015 AM CDT

* AT 725 AM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY
  RAIN OCCURRING ACROSS ALL OF FANNIN COUNTY.  FLOODING HAS BEEN
  REPORTED BY BONHAM POLICE IN THE HIGHLAND AREA...AND NUMEROUS OTHER
  LOCATIONS.  UP TO TWO INCHES HAS FALLEN IN PARTS OF THE COUNTY...
  AND AN ADDITIONAL ONE TO TWO INCHES COULD FALL THROUGH 900 AM.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

LAT...LON 3369 9635 3337 9636 3342 9586 3384 9588

1 follow-up statement

000 
WGUS74 KFWD 271405
FFSFTW
TXC147-271515-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE FORT WORTH TX
900 AM CDT TUE AUG 27 2002

...A FLASH FLOOD WARNING CONTINUES FOR FANNIN COUNTY UNTIL 1015 AM
CDT...

AT 9 AM CDT...WEATHER SERVICE RADAR CONTINUED TO SHOW AREAS OF 
MODERATE TO HEAVY RAINFALL OVER FANNIN COUNTY. RAINFALL ESTIMATES OF 
ONE TO TWO AND ONE HALF INCHES HAVE OCCURRED SINCE 730 AM CDT...OVER 
ESPECIALLY THE EAST HALF OF THE COUNTY. ADDITIONAL RAINFALL 
AMOUNTS OF ONE HALF INCH TO ONE INCH ARE POSSIBLE THROUGH 1015 AM 
CDT...AS A STORM COMPLEX MOVES SLOWLY EAST OUT OF THE REGION. 

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. KNOW YOUR
LOCATION IN RELATION TO STREAMS...RIVERS OR CREEKS THAT CAN BECOME 
KILLERS IN HEAVY RAINS. DO NOT ATTEMPT TO DRIVE THROUGH RISING WATER 
AND DO NOT ALLOW CHILDREN TO PLAY AROUND SWOLLEN CREEKS AND STREAMS 
AS WELL AS STORM DRAINS. 

LAT...LON 3387 9588 3345 9586 3336 9636 3370 9638

The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 27, 4:45 AM CDT	Severe Thunderstorm Warning	FWD	Montague	60 min
Aug 27, 4:45 AM CDT	Severe Thunderstorm Warning	FWD	Collin	23 hr
Aug 27, 4:50 AM CDT	Severe Thunderstorm Warning	FWD	Cooke	55 min
Aug 27, 5:08 AM CDT	Severe Thunderstorm Warning	FWD	Jack, Wise	52 min
Aug 27, 5:43 AM CDT	Severe Thunderstorm Warning	FWD	Cooke, Grayson	62 min
Aug 27, 5:59 AM CDT	Severe Thunderstorm Warning	FWD	Fannin	61 min
Aug 27, 6:04 AM CDT	Severe Thunderstorm Warning	FWD	Denton	56 min
Aug 27, 6:29 AM CDT	Severe Thunderstorm Warning	FWD	Collin, Dallas, Tarrant	61 min
Aug 27, 8:22 AM CDT	Severe Thunderstorm Warning	FWD	Hopkins, Rains	38 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; radar from the NEXRAD Level II archive.