Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 48, NWS Houston/Galveston, TX

June 16, 2002Brazoria County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jun 16, 2002, 6:31 AM CDT for Brazoria County, Texas. It was in force for 29 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: Jun 16, 2002, 6:31 AM CDT (11:31 UTC)
Expired: Jun 16, 2002, 7:00 AM CDT
In force: 29 min
Issued by: NWS Houston/Galveston, TX
Area: Counties, with a storm outline in the text

County Brazoria County, TX

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 16, 3:30 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.5 hours before the alert went out and 223 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3222 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 22 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 
WUUS54 KHGX 161130
SVRHOU
TXC201-161215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
630 AM CDT SUN JUN 16 2002

THE NATIONAL WEATHER SERVICE HAS RE-ISSUED A

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

* UNTIL 715 AM CDT

* AT 624 AM CDT...DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS 
  EXTENDING FROM LAKE HOUSTON TO SOUTHWEST OF BELLAIRE. MOVEMENT 
  WAS SOUTHEAST AT 35 TO 40 MPH. 

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
  HOUSTON
  GALENA PARK...JACINTO CITY...CLOVERLEAF
  SOUTH HOUSTON...HOBBY AIRPORT...CHANNELVIEW
  PASADENA...DEER PARK

MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR 
BUSINESS. STAY AWAY FROM WINDOWS. RADAR INDICATES ISOLATED AREAS OF 
WINDS ABOVE 55 MPH IN THE STORMS. VERY HEAVY RAIN IS ALSO OCCURRING.
EXPECT HIGH WATER ON FEEDER ROADS AND IN AREAS OF POOR DRAINAGE. 
THIS LINE OF STORMS BLEW LARGE TREES DOWN IN MISSION BEND AROUND 620 
AM.

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 2992 9534 2980 9548 2958 9525 2972 9496

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 Jun 16, 3:49 AM CDT, 2 hours 42 minutes earlier.

Area forecast discussion, Jun 16, 3:49 AM CDT, 2 hours 42 minutes before

SOUTHEAST TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
345 AM CDT SUN JUN 16 2002

MCS APPROACHING NRN ZONES ATTM AND WILL MOVE ACROSS SE TX NEXT FEW
HOURS. PER SFC ANALYSIS...SYSTEM IS MOVING INTO INCREASINGLY MOIST
AIRMASS AND IR IMAGERY SHOWS COOLING CLOUD TOPS OVER CENTRAL TX. PER
COORDINATION CALL WITH SPC...SEVERE THUNDERSTORM WATCH WILL BE
ISSUED FOR ENTIRE CWA UNTIL 13Z. DAMAGING WINDS APPEAR TO THE THE
PRIMARY SEVERE THREAT. BASED ON CURRENT MOVEMENT OF MCS...EXPECT
STORMS WILL OFF THE UPPER COAST BY WATCH EXPIRATION.

00Z MODELS...ESPECIALLY AVN...HAVE POORLY HANDLED LOCATION/MOVEMENT
OF MCS VORT ACROSS TEXAS TONIGHT...SO NOT CONFIDENT WITH THEIR
SOLUTIONS LATER TODAY/TONIGHT. SHOULD SEE A LITTLE CLEARING THIS
AFTN IN WAKE OF SYSTEM. LEFTOVER OUTFLOW BOUNDARIES COULD SERVE AS
FOCUS FOR ADDITIONAL SCATTERED CONVECTIVE DEVELOPMENT THIS AFTERNOON
AND EVENING. GIVEN STEEP LAPSE RATES AND STRONGER MID LEVEL WINDS IN
PLACE...WILL KEEP MENTION OF SEVERE IN FCST THROUGH THIS EVENING.

WEAK COLD FRONT PUSHES ACROSS SE TX LATE TNGT/MONDAY BRINGING IN
SLIGHTLY DRIER AIRMASS. WILL STICK WITH 00Z ETA WHICH STALLS FRONT
ALONG COAST MONDAY MORNING BEFORE SEABREEZE KICKS IN DURING THE
AFTERNOON. PWS DROP TO AROUND 1.4 INCHES MONDAY BUT WITH ACTIVE
SEABREEZE EXPECTED WILL LEAVE CHANCE POPS IN FOR CENTRAL
ZONES/COAST. LONG RANGE MODELS IN AGREEMENT ON 500 MB SHEAR AXIS
DEVELOPING OVER CENTRAL GULF COAST BY MIDWEEK. THIS FEATURE SLIDES
SLOWLY WESTWARD...REACHING SE TX THU/FRI. WILL UP POPS TO CHANCE
CATEGORY AGAIN THU/FRI AS PWS CLIMB BACK UP TO AROUND 1.6-1.7
INCHES. EXPECT SEASONABLE TEMPS FOR THE EXTENDED PERIOD.

35/46

.HGX...SEVERE THUNDERSTORM WATCH ENTIRE CWA UNTIL 13Z.
       SCA ALL WATERS FOR TODAY.

PRELIMS...
CLL EB 087/066 093/070 093 732
IAH EB 087/068 091/070 091 733
GLS EB 085/075 088/078 088 733

In the hours before

Special weather statement, Jun 16, 3:22 AM CDT, 3 hours 9 minutes before

TXZ163-164-176>179-195>200-210>214-226-227-235>238-161300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
322 AM CDT SUN JUN 16 2002

...SEVERE THUNDERSTORM WATCH FOR ALL OF SOUTHEAST TEXAS UNTIL
800 AM...

THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH
FOR ALL OF SOUTHEAST TEXAS UNTIL 800 AM THIS MORNING. SHOWERS AND
THUNDERSTORMS WILL MOVE RAPIDLY SOUTH ACROSS THE REGION THIS
MORNING. THE LEADING EDGE OF THIS AREA OF SHOWERS AND THUNDERTORMS
HAS THE POTENTIAL TO PRODUCE DAMAGING WINDS 55 MPH OR HIGHER AS WELL
AS FREQUENT LIGHTNING AND VERY HEAVY RAIN. LARGE HAIL IS ALSO
POSSIBLE.

A STRONG UPPER LEVEL DISTURBANCE IS MOVING ACROSS THE AREA AT THIS
TIME. THIS COMBINED WITH AN UNSTABLE ATMOSPHERE IS CAUSING THE SEVERE
WEATHER POTENTIAL. THERE IS POTENTIAL FOR ADDITIONAL SEVERE STORMS
THIS AFTERNOON.

STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA FOR THE LATEST
UPDATES AND WARNINGS FROM THE NATIONAL WEATHER SERVICE.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 4:04 AM CDT	Severe Thunderstorm Warning	HGX	Brazos, Burleson	41 min
Jun 16, 4:29 AM CDT	Severe Thunderstorm Warning	HGX	Washington	46 min
Jun 16, 4:31 AM CDT	Severe Thunderstorm Warning	HGX	Grimes, Walker	44 min
Jun 16, 4:46 AM CDT	Severe Thunderstorm Warning	HGX	Austin, Waller	59 min
Jun 16, 5:22 AM CDT	Severe Thunderstorm Warning	HGX	Montgomery	38 min
Jun 16, 5:50 AM CDT	Severe Thunderstorm Warning	HGX	Harris	40 min
Jun 16, 5:55 AM CDT	Severe Thunderstorm Warning	HGX	Fort Bend	50 min
Jun 16, 6:30 AM CDT	Severe Thunderstorm Warning	HGX	Harris	45 min
Jun 16, 6:37 AM CDT	Special Marine Warning	HGX		83 min
Jun 16, 7:27 AM CDT	Special Marine Warning	HGX		93 min
Jun 16, 7:27 AM CDT	Special Marine Warning	HGX		93 min
Jun 16, 9:05 AM CDT	Special Marine Warning	HGX		40 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every 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.