Alert archive / Texas / Flash Flood Warnings in 1999

Flash Flood Warning 4, NWS Brownsville, TX

August 22, 1999Brooks County, Kenedy County, Texas

NWS Brownsville, TX issued this flash flood warning at Aug 22, 1999, 10:15 PM CDT for Brooks County, Kenedy 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 counties it named.

The facts

Issued
Aug 22, 1999, 10:15 PM CDT (03:15 UTC)
Expired
Aug 23, 1999, 3:45 AM CDT
In force
6 hr
Issued by
NWS Brownsville, TX
Area
Whole counties

Counties Brooks County, TX, Kenedy County, TX

The radar

The Corpus Christi radar (KCRP), 98 km from the middle of the area, began a volume at 03:19 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

Corpus Christi, TX (KCRP), launched 00:00Z, 3.3 hours before the alert went out and 102 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, Corpus Christi, TX at 00:00Z on 1999-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 375 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, Corpus Christi, TX at 00:00Z on 1999-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 square meters per square second.19395878Sfc1 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
375 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
515 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
235 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KBRO 230311
FFWBRO
TXC047-261-230845-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD/FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1015 PM CDT SUN AUG 22 1999

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  BROOKS COUNTY IN TEXAS
  THIS INCLUDES THE CITY OF FALFURRIAS

  KENEDY COUNTY IN TEXAS
  THIS INCLUDES THE CITY OF SARITA

* UNTIL 345 AM CDT MONDAY MORNING

* AT 946 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN          
  BROWNSVILLE SHOWED WIDESPREAD HURRICANE DRIVEN TORRENTIAL RAINS    
  OVER NORTHEAST KENEDY COUNTY NEAR THE EYE OF HURRICANE BRET.       
  CURRENT RAINFALL TOTALS NEAR THE CENTER OF BRET RANGED FROM 9 TO   
  15 INCHES SINCE THE STORM HAS MOVED INLAND.  THE CENTER OF BRET    
  WILL CONTINUE TO MOVE WEST NORTHWEST AROUND 7 MPH THROUGH THE      
  NIGHT WITH A GRADUAL DECREASE IN FORWARD SPEED EXPECTED            
  MONDAY. THIS SLOW MOVEMENT HAS GENERATED NEAR RECORD BREAKING    
  RAINFALL AMOUNTS OVER NORTHERN AND NORTHEASTERN KENEDY COUNTY.  
  THESE NEAR RECORD BREAKING RAINFALL RATES WILL STEADILY SPREAD 
  WESTWARD INTO NORTHEAST BROOKS COUNTY AND WILL QUICKLY GENERATE    
  FLOOD CONDITIONS THERE BY 4 AM MONDAY MORNING.      

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK
HIGHER GROUND.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RlECOGNIZE 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.

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 Brownsville, TX wrote its last area forecast discussion before this flash flood warning went out at Aug 22, 8:30 PM CDT, 1 hour 45 minutes earlier.

Area forecast discussion, Aug 22, 8:30 PM CDT, 1 hour 45 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BROWNSVILLE TX
830 PM CDT SUN AUG 22 1999

BRET HAS MOVED INLAND OVER CENTRAL KENEDY COUNTY IN DEEP SOUTH TEXAS
THIS EVENING.  THERE WILL STILL BE VERY STRONG WINDS OVER THE
NORTHERN PORTION OF DEEP SOUTH TEXAS FOR TONIGHT.  RAINS WILL
CONTINUE OVER MOST OF DEEP SOUTH TEXAS TONIGHT WITH POSSIBLY
SPREADING OVER THE ENTIRE AREA LATER TONIGHT.  WILL KEEP HIGH POPS
IN THE FORECAST FOR TONIGHT AS BRET WILL BE MOVING VERY SLOWLY
ACROSS DEEP SOUTH TEXAS.  AN ADDITIONAL 5 TO 10 INCHES ALONG THE EYE
WALL COULD ACCUMULATE IN THE ITS PATH.

CWF...SEAS WILL CONT TO BE ROUGH FOR QUITE A LONG TIME AS BRET MOVES
ACROSS DEEP SOUTH TEXAS.  BOY 020 HAS SWELLS UP TO 22 FEET AND WILL
DECREASE SLOWLY TONIGHT.

.BRO...HURRICANE WARNING TXZ251-254-255-GMZ130-150-155-170-175.
       HIGH WIND WARNING TXZ248>250-252-253
       FLASH FLOOD WATCH TXZ248-252-253

55

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 22, 7:20 PM CDTFlash Flood WarningBROKenedy, Willacy3 hr
Aug 23, 4:18 AM CDTFlash Flood WarningBROBrooks, Kenedy8 hr
Aug 23, 4:18 AM CDTFlash Flood WarningBROWillacy8 hr
Aug 23, 11:59 AM CDTFlash Flood WarningBROCameron4 hr
Aug 23, 2:59 PM CDTTornado WarningBROKenedy, Willacy31 min
Aug 23, 3:18 PM CDTTornado WarningBROCameron, Hidalgo27 min
Aug 23, 3:34 PM CDTTornado WarningBROKenedy41 min
Aug 23, 3:44 PM CDTTornado WarningBROCameron, Hidalgo, Willacy61 min
Aug 23, 4:27 PM CDTTornado WarningBROWillacy63 min
Aug 23, 6:55 PM CDTFlash Flood WarningBROHidalgo3 hr

Nearby

Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999

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.