Alert archive / Texas / Flash Flood Warnings in 1998

Flash Flood Warning 5, NWS Brownsville, TX

October 13, 1998Kenedy County, Texas

NWS Brownsville, TX issued this flash flood warning at Oct 13, 1998, 6:49 AM CDT for Kenedy 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 counties it named.

The facts

Issued
Oct 13, 1998, 6:49 AM CDT (11:49 UTC)
Expired
Oct 13, 1998, 9:50 AM CDT
In force
3 hr
Issued by
NWS Brownsville, TX
Area
Whole counties

County Kenedy County, TX

The radar

The Corpus Christi radar (KCRP), 96 km from the middle of the area, began a volume at 11:53 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, 11.8 hours before the alert went out and 94 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 1998-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1812 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 1998-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.1939Sfc1 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
1812 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
2 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 
TTAA00 KBRO 131148
FFWBRO
TXC261-131450-

BULLETIN - EAS ACTIVATION REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
649 AM CDT TUE OCT 13 1998

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE HAS ISSUED A

* FLOOD WARNING FOR...
  SOUTHERN KENEDY COUNTY IN SOUTHERN TEXAS

* UNTIL 950 AM CDT

* AT 645 AM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAIN SOUTHWESTERN CORNER OF KENEDY
  COUNTY... MOVING SLOWLY SOUTHWEST.

* THIS STORM WILL PRODUCE RAINFALL RATES FROM 1 TO 2 INCHES PER
  HOUR ACROSS THE SOUTHWESTERN KENEDY COUNTY.

DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN
AUTOMOBILES.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL RADIO OR TV STATION
FOR THE LATEST WEATHER INFORMATION.

SPEECE

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 Oct 13, 2:45 AM CDT, 4 hours 4 minutes earlier.

Area forecast discussion, Oct 13, 2:45 AM CDT, 4 hours 4 minutes before
DEEP SOUTH TEXAS FORECAST DISCUSSION...CORRECTION FOR CCF
NATIONAL WEATHER SERVICE BROWNSVILLE TX
245 AM CDT TUE OCT 13 1998

CURRENT KBRO REFLECTIVITY SHOWS ISOLD TO SCT CONV EXTENDING N-S
ALONG THE TEX/MEX COAST MOVING W-SW AT 15 MPH.  THIS ACTIVITY IS
EBBEDED IN AN AREA OF DEEPER MOISTURE CENTERED OVER CENTRAL MEX AND
SOUTHERN TX.  MODEL GUIDANCE SHOWS THAT DESPITE THE OVERALL 5H
RIDGING CENTERED OVER THE STATE...A COUPLE OF VORT MAXES PERSIST
OVER THE AREA WHICH IS INITIATING THE CONV.  THIS WILL COMBINE WITH
DIURNAL HEATING AND THE AFTERNOON SEA-BREEZE BOUNDARIES TO MAINTAIN
THE CONV POTENTIAL TODAY. MODEL GUIDANCE EVENTUALLY DRYS OUT THE
ATMS OVER THE REGION AFTER 24 HRS AND THIS IS ACCORDINGLY REFLECTED
IN THE FWC AND FAN POP GUIDANCE.

CLD COVER AND HIGH MOISTURE VALUES WILL HOLD DOWN TEMPS TO NEAR FWC
AND FAN GUIDANCE.  WILL ALSO FOLLOW FWC WIND GUIDANCE WITH AN E-NE
SURFACE PERSISTING.

HIGH SURFACE MOISTURE VALUES (THE RESULT OF TODAYS DOWNPOURS) AND
THIS MORNINGS LIGHT WINDS WILL ALSO MAINTAIN FOG POTENTIAL ATTM.

FOR TXZ248>255...

.TODAY...PARTLY CLOUDY WITH A 30 % CHC FOR SHOWERS OR
THUNDERSTORMS.  AREAS OF EARLY MORNING FOG POSSIBLE.  LIGHT
NORTHEAST WIND INCREASING TO NEAR 10 MPH THIS AFTERNOON.

.TONIGHT...PARTLY CLOUDY WITH A 20 % CHC FOR EVENING SHOWERS OR
THUNDERSTORMS.  AREAS OF FOG POSSIBLE AFTER MIDNIGHT.  A LIGHT
NORTHEAST WIND.

.WED...PARTLY CLOUDY.  AREAS OF EARLY MORNING FOG POSSIBLE. A LIGHT
EAST WIND INCREASING TO 10 TO 15 MPH THIS AFTERNOON.

EXTENDED...MRF GUIDANCE BRINGS A FAIRLY STRONG SURFACE FRONT INTO
CENTRAL TX FOCUSING THE CONV POTENTIAL THERE ON FRI/SAT.  WILL
LIKELY NOT PENETRATE FAR ENUF SOUTH INTO SOUTHERN TX TO INCREASE
CONV POTENTIAL GREATLY HERE.  HOWEVER...THIS SITUATION WILL NEED TO
BE MONITORED AS CONV BOUNDARIES MAY BE THE FLY IN THE OINTMENT FOR
HIGHER CONV POTENTIAL THIS UPCOMING WEEKEND.  ACCORDINGLY...MOST OF
THE EXTENDED WORDING LOOKS GOOD WITH A MENTION OF A SLGT CHC OF
CONV FOR THE CWA ON SAT.  HOWEVER...WOULD LIKE TO MAKE ONE CHANGE
TO THE WORDING.  SINCE THE PGF WILL BE INCREASING AHEAD OF THE
SURFACE FRONT...WOULD LIKE TO INCLUDE A MENTION OF WINDY
CONDITIONS FOR THUR-SAT.

CWF...BOUNDARY LAYER WIND PROGS INDICATES E-NE FLOW AT 10 TO 15 KT
OVER THE WESTERN GULF PERSISTING THROUGH THE PERIOD.  FOR
WORDING...TODAY...E WIND 15 KT...SHIFTING TO THE NE LATE. SEAS 4
FT. ISOLATED SHOWERS OR THUNDERSTORMS. TONIGHT...NE WIND 15 KT.
SEAS 4 FT. ISOLATED SHOWERS OR THUNDERSTORMS. WED...NE WIND 10 KT
WITH GUSTS TO 15 KT. SEAS 4 FT. ISOLATED SHOWERS OR THUNDERSTORMS.

BRO BB 088/067 088/067 089 30/20/00
MFE BB 090/066 090/066 091 30/20/00
RGC BB 094/065 094/065 095 30/20/00
SPI BB 085/074 085/074 086 30/20/00

60

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 13, 7:47 AM CDTFlash Flood WarningBROWillacy3 hr

Nearby

Flash Flood Warnings in Texas, 1998Every flash flood warning in 1998

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.