Alert archive / Texas / Tornado Warnings in 1998

Tornado Warning 48, NWS Houston/Galveston, TX

October 5, 1998Brazoria County, Galveston County, Harris County, Texas

NWS Houston/Galveston, TX issued this tornado warning at Oct 5, 1998, 1:32 AM CDT for Brazoria County, Galveston County, Harris County, Texas. It was in force for 28 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Oct 5, 1998, 1:32 AM CDT (06:32 UTC)
Expired
Oct 5, 1998, 2:00 AM CDT
In force
28 min
Issued by
NWS Houston/Galveston, TX
Area
Whole counties

Counties Brazoria County, TX, Galveston County, TX, Harris County, TX

What was reported inside it

TimeReportWhereRemark
Oct 5, 1:35 AM CDTTornado F0Angleton, TXBrief tornado touchdown just east of Angleton. Cattle ranch sustained structural damage and loss of livestock.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 6.5 hours before the alert went out and 208 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, Lake Charles Mun, LA at 00:00Z on 1998-10-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 179 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, Lake Charles Mun, LA at 00:00Z on 1998-10-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 259 square meters per square second.193958Sfc1 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
179 J/kg
Mixed-layer CIN
-183 J/kg
Mixed-layer LCL
745 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
259 m²/s²
0-3 km storm-relative helicity
434 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

866 
WFUS1 KHOU 050631 RRA
TORHOU
TXC039-167-201-050700-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
132 AM CDT MON OCT 5 1998

THE NATIONAL WEATHER SERVICE IN HOUSTON/GALVESTON HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN BRAZORIA COUNTY IN SOUTHEASTERN TEXAS
  NORTHWESTERN GALVESTON COUNTY IN SOUTHEASTERN TEXAS
  EXTREME SOUTHEASTERN HARRIS COUNTY IN SOUTHEASTERN TEXAS

* UNTIL 200 AM CDT

* AT 130 AM... WEATHER RADAR INDICATED A TORNADIC THUNDERSTORM
  JUST NORTH OF ALVIN... MOVING NORTH NORTHEAST AT 20 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR FRIENDSWOOD BY 135 AM AND
  WEBSTER BY 145 AM


THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE IN
THE PATH OF THIS TORNADO MOVE TO A PLACE OF SAFETY IN A SMALL
INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE.  AVOID WINDOWS.
ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR GET INTO
A DITCH OR CULVERT.

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this tornado warning went out at Oct 4, 8:35 PM CDT, 4 hours 57 minutes earlier.

Area forecast discussion, Oct 4, 8:35 PM CDT, 4 hours 57 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
835 PM CDT SUN OCT 4 1998

BUSY NIGHT HERE AT THE WFO. MOISTURE RICH ATMOSPHERE AND UPR
DIFLUENCE SEEM TO COMBINE WITH AN AREA OF SFC CONVERGENCE ALG THE
I-45 CORRIDOR TO PRODUCE HEAVY RAINFALL IN THE SE PTN OF OUR CWA.
THE AREA OF HEAVIEST RAINFALL APPEARS TO HAVE GOTTEN A KICK IN THE
LAST HALF HOUR...AND HOPEFULLY WILL EXIT THE CWA WITHIN THE HOUR.

HAVENT HAD TIME FOR AN EXHAUSTIVE OVERVIEW OF THE MODELS...BUT AM
SKEPTICAL OF THE DRYING BEING INDICATED LATE TNGT INTO TMRW BY THE
ETA. ITS BEEN OFF ON THIS FOR THE LAST TWO DAYS. NGM HOLDS MOISTURE
IN...AND WITH A DEEP SLY FLOW OFF THE GULF...THIS SOLN SEEMS MOST
REASONABLE. ANOTHER VORT LOBE IS SLATED TO CROSS THE AREA TMRW.
COULD SEE ANOTHER ROUND OF RW/TRW...SOME WITH HVY RAIN. ANOTHER ONE
IS ON OUR DOORSTEP BY 12Z TUE. SIGH.

CAN LOWER POPS NRN ZONES FOR THE NIGHT. LEAVE THEM ALONE ELSW...
SHD SEE REDEVELOPMENT AGAIN ALG COAST BY DAWN...AS WAS THE CASE PREV
TWO NIGHTS.

PRELIMS...

CLL B/B E/E 075/092 074/088  1335

IAH E/B E/E 074/092 075/088  3334

GLS B/B B/E 077/089 078/087  4334

SW  B/B B/E 076/090 076/088  2223  (JACKSON/MATAGORDA)

The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 4, 8:57 PM CDTFlash Flood WarningHGXGalveston113 min
Oct 4, 10:51 PM CDTFlash Flood WarningHGXGalveston119 min
Oct 5, 12:58 AM CDTTornado WarningHGXBrazoria47 min

Nearby

Tornado Warnings in Texas, 1998Every tornado warning in 1998Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.