Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 36, NWS Houston/Galveston, TX

May 17, 2002Jackson County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at May 17, 2002, 4:44 PM CDT for Jackson County, Texas. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 17, 2002, 4:44 PM CDT (21:44 UTC)
Expired
May 17, 2002, 5:15 PM CDT
In force
31 min
Issued by
NWS Houston/Galveston, TX
Area
Counties, with a storm outline in the text

County Jackson County, TX

The radar

The Corpus Christi radar (KCRP), 145 km from the middle of the area, began a volume at 21:44 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm 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

Corpus Christi, TX (KCRP), launched 12:00Z, 9.7 hours before the alert went out and 140 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 12:00Z on 2002-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1839 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 12:00Z on 2002-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 272 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
1839 J/kg
Mixed-layer CIN
-146 J/kg
Mixed-layer LCL
894 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
272 m²/s²
0-3 km storm-relative helicity
311 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.2

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KHGX 172144
SVRHOU
TXC239-172215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
443 PM CDT FRI MAY 17 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JACKSON COUNTY IN SOUTHEAST TEXAS

* UNTIL 515 PM CDT

* AT 436 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4
  MILES NORTHEAST OF VANDERBILT...MOVING SOUTHEAST AT 5 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
  VANDERBILT
  LA WARD

MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. STAY AWAY FROM WINDOWS

PLEASE REPORT SEVERE WEATHER TO THE COUNTY SHERIFF...LOCAL POLICE...
OR DEPARTMENT OF PUBLIC SAFETY. THEY WILL RELAY YOUR REPORT TO THE
NATIONAL WEATHER SERVICE.

LAT...LON 2886 9666 2863 9661 2868 9637 2888 9647

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at May 17, 3:35 PM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, May 17, 3:35 PM CDT, 1 hour 9 minutes before
SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
335 PM CDT FRI MAY 17 2002

WIND SHIFT LINE CONTINUING TO PUSH THROUGH SOUTHEAST TEXAS THIS
AFTERNOON BUT THE BRUNT OF THE COOL AIR IS REMAINING OVER NORTH
TEXAS ATTM. THE LARGE AREA OF CONVECTION CURRENTLY OVER THE CWA
STARTING TO CONTRACT AS LAST NIGHTS SHORTWAVE MOVES FURTHER TO
THE EAST AND THE PCPN ASSOCIATED WITH THE FRONT HITS THE WORKED
OVER AIRMASS OVER THE SRN HALF OF THE CWA. ALL OF THIS PRECIPI-
TATION IS EXPECTED TO END BY MIDNITE...BUT CLOUDS SHOULD LINGER
ACROSS MOST THE AREA OVERNITE. PATCHY -RA MAY ALSO PERSIST OVER
THE COASTAL ZONES VERY EARLY TOMORROW MORNING...BUT THE MAIN WX
STORY TOMORROW WILL BE THE CLEARING SKIES AND MUCH COOLER TEMPS.
DRY CANADIAN RIDGE TO SETTLE OVER THE CENTRAL PLAINS THE NEXT 2
DAYS BEFORE EDGING OFF TO THE EAST AS THE NEXT UPPER LOW BEGINS
TO DEEPEN OVER THE WEST COAST. THIS TROUGH NOT EXPECTED TO MAKE
MUCH OF AN IMPACT FOR SOUTH TX AS ITS PROGGED TRACK TAKES IT A-
CROSS THE NRN TIER STATES. THE UPPER FLOW OVER THE REGION TAKES
ON A DECIDELY FLATTER LOOK NEXT WEEK. THUS A SLOW WARM UP IS ON
TAP BEGINNING MONDAY WITH THE RE-OPENING OF THE GULF NOT IN THE
CARDS UNTIL LATE TUESDAY OR SO. 41/45

.HGX...SCA BAYS AND 0-60 NM HIGH ISLAND TO THE MATAGORDA SHIP
       CHANNEL TONIGHT AND TOMORROW.

PRELIMS...
CLL UU 059/076 051/079 054 200
IAH UU 061/076 052/079 055 700
GLS UU 067/076 061/077 067 710

The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 5:46 AM CDTSpecial Marine WarningHGX44 min
May 17, 6:33 AM CDTSpecial Marine WarningHGX117 min
May 17, 6:56 AM CDTFlash Flood WarningHGXBrazoria, Galveston, Harris4 hr
May 17, 8:03 AM CDTSpecial Marine WarningHGX117 min
May 17, 12:24 PM CDTFlash Flood WarningHGXHouston3 hr
May 17, 3:26 PM CDTSpecial Marine WarningHGX2 hr
May 17, 4:30 PM CDTSpecial Marine WarningHGX2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2002Every severe thunderstorm 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.