Alert archive / Texas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 41, NWS Houston/Galveston, TX

March 20, 2005Chambers County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Mar 20, 2005, 1:33 AM CST for Chambers County, Texas. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 20, 2005, 1:33 AM CST (07:33 UTC)
Expired: Mar 20, 2005, 2:30 AM CST
In force: 57 min
Issued by: NWS Houston/Galveston, TX
Area: Counties, with a storm outline in the text

County Chambers County, TX

The radar

The Houston radar (KHGX), 47 km from the middle of the area, began a volume at 07:36 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 7.6 hours before the alert went out and 149 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: 856 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 904 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -113 m²/s²
0-3 km storm-relative helicity: -40 m²/s²
Significant tornado parameter: -0.4
Supercell composite: -3.3

Open this sounding in Storm Lab

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 Mar 19, 9:55 PM CST, 3 hours 38 minutes earlier.

Area forecast discussion, Mar 19, 9:55 PM CST, 3 hours 38 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
955 PM CST SAT MAR 19 2005

.DISCUSSION...
AN MCS WAS CONTINUING TO MOVE INTO THE SOUTHERN COUNTIES OF SE TX
WHILE THE MCS THAT MOVED OVER THE NORTHERN COUNTIES EARLIER THIS
EVENING WAS CONTINUE TO DISSIPATE.  WEATHER CONCERNS ARE SEVERE TO
THE SOUTH AND RAINFALL TO THE NORTHEAST AND SOUTH.  WILL LOWER THE
POPS OVER THE NORTHWEST TONIGHT.  ELSEWHERE WILL CONTINUE THE
LIKELY POPS DUE TO THE ONGOING ACTIVITY.

SO FAR THIS EVENING THERE HAVE ONLY BEEN ISOLATED REPORTS OF MINOR
FLOODING. URBAN AND SMALL STREAM FLOODING MAY ACCOMPANY THE STORM
MOVING INTO JACKSON...COLORADO...AND WHARTON AT THIS HOUR.  THE
RADAR SHOWS THE BOOKEND VORTEX VERY NICELY.  SEVERE CONCERNS
CONTINUE TO BE HAIL AND WIND...BUT ISOLATED TORNADOES ARE POSSIBLE
AS WELL.

OVER THE NORTHEAST WHERE THE DYING MCS WAS LOCATED...MODERATE
RAINFALL MAY CAUSE SOME URBAN AND SMALL STREAM MINOR FLOODING.

40

&&

.PRELIMINARY POINT TEMPS/POPS...
COLLEGE STATION (CLL)      57  77  61  80  55 /  50  20  20  30  20
HOUSTON (IAH)              59  76  60  80  58 /  60  40  20  30  20
GALVESTON (GLS)            63  74  64  76  62 /  60  40  20  30  20

&&

.HGX WATCHES/WARNINGS/ADVISORIES...

TX...
SEVERE THUNDERSTORM WATCH THROUGH MIDNIGHT FOR SE TX.

GM...
SEVERE THUNDERSTORM WATCH THROUGH MIDNIGHT FOR
      GALVESTON AND MATAGORDA BAYS
      00 TO 20 NM HIGH ISLAND TO THE MATAGORDA SHIP CHANNEL.

&&

Hazardous weather outlook, Mar 19, 3:40 PM CST, 9 hours 53 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
340 PM CST SAT MAR 19 2005

GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-201300-
AUSTIN-BRAZORIA-BRAZOS-BURLESON-CHAMBERS-COLORADO-FORT BEND-GALVESTON-
GALVESTON BAY-GRIMES-HARRIS-HOUSTON-JACKSON-LIBERTY-MADISON-MATAGORDA-
MATAGORDA BAY-MONTGOMERY-POLK-SAN JACINTO-TRINITY-WALKER-WALLER-
WASHINGTON-WHARTON-
340 PM CST SAT MAR 19 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS.

...SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST TEXAS
TONIGHT...

.DAY ONE...TONIGHT.
AN APPROACHING UPPER LEVEL DISTURBANCE WILL COMBINE WITH AN UNSTABLE
AIRMASS IN PLACE TO PRODUCE CLUSTERS OF SHOWERS AND THUNDERSTORMS
ACROSS SOUTHEAST TEXAS THIS EVENING. BECAUSE OF COLD TEMPERATURES AND
DRY AIR AT THE MID-LEVELS OF THE ATMOSPHERE...A FEW OF THE STORMS ARE
EXPECTED TO BECOME SEVERE. THE MAIN SEVERE WEATHER THREATS WILL BE
LARGE HAIL AND DAMAGING DOWNBURST WIND GUSTS. THE MAIN TIME FRAME FOR
THE SEVERE WEATHER THREAT WILL BE FROM 5 PM TO MIDNIGHT.

PERSONS ACROSS SOUTHEAST TEXAS SHOULD MONITOR LOCAL NEWS SOURCES FOR
THE LATEST ON THE WEATHER SITUATION. SEVERE WEATHER WATCHES AND/OR
WARNINGS MAY BE ISSUED FOR PORTIONS OF SOUTHEAST TEXAS THIS EVENING.
BE PREPARED TO ACT QUICKLY IF A WARNING IS ISSUED.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
MONDAY AND MONDAY EVENING...ANOTHER UPPER LEVEL DISTURBANCE AND
ASSOCIATED DRYLINE WILL MOVE ACROSS SOUTHEAST TEXAS...POSSIBLY
BRINGING AN ADDITIONAL THREAT OF SEVERE WEATHER TO THE AREA.

.SPOTTER INFORMATION STATEMENT....
SPOTTER ACTIVATION IS LIKELY THIS EVENING.

In the hours before

Special weather statement, Mar 19, 8:02 PM CST, 5 hours 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
802 PM CST SAT MAR 19 2005

TXZ210-200250-
COLORADO-
802 PM CST SAT MAR 19 2005

...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL MIDNIGHT FOR SOUTHEAST
TEXAS...

A STRONG TO SEVERE THUNDERSTORM BETWEEN SHINER AND HALLETTSVILLE
WILL CONTINUE TO TRACK EAST AT 15 TO 20 MPH. THIS STORM WILL LIKELY
REACH THE WESTERN PORTIONS OF COLORADO COUNTY AROUND 830 TO TO 840
PM. THIS STORM WILL LIKELY BE CAPABLE OF LARGE HAIL AND POSSIBLY
DAMAGING WINDS.

PERSONS IN OR NEAR THE WATCH AREA SHOULD BE PREPARED FOR THE
POSSIBILITY OF SEVERE WEATHER. BE PREPARED TO TAKE QUICK ACTION IF A
WARNING IS ISSUED.

STAY TUNED TO NOAA WEATHER RADIO OR OTHER NEWS SOURCES FOR FURTHER
WEATHER UPDATES AND POSSIBLE WARNINGS.

Local storm report, Mar 19, 8:41 PM CST, 4 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
841 PM CST SAT MAR 19 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0545 PM     HAIL             4 W CALDWELL            30.53N 96.77W
03/19/2005  2.00 INCH        BURLESON           TX   LAW ENFORCEMENT

            SHERIFFS REPORTED 2 INCH HAIL COVERING THE GROUND ALONG
            FM-908.

0550 PM     HAIL             BRYAN                   30.67N 96.37W
03/19/2005  1.75 INCH        BRAZOS             TX   LAW ENFORCEMENT

            GOLFBALL HAIL IN BRYAN

0602 PM     HAIL             BRYAN                   30.67N 96.37W
03/19/2005  1.75 INCH        BRAZOS             TX   LAW ENFORCEMENT

            NUMEROUS REPORTS FROM THE PUBLIC OF NICKEL TO GOLFBALL
            HAIL IN COLLEGE STATION

0630 PM     TSTM WND GST     NE CONROE               30.32N 95.47W
03/19/2005  0 MPH            MONTGOMERY         TX   TRAINED SPOTTER

            60 MPH WIND GUSTS NORTHEAST OF CONROE.

&&

KP

Local storm report, Mar 19, 11:45 PM CST, 1 hour 48 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
1145 PM CST SAT MAR 19 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0509 PM     HAIL             HOUSTON                 29.77N 95.39W
03/19/2005  1.00 INCH        HARRIS             TX   PUBLIC

            INTERSTATE 45 AND CALVALCADE

0515 PM     HAIL             HOUSTON                 29.77N 95.39W
03/19/2005  1.00 INCH        HARRIS             TX   TRAINED SPOTTER

            WEST 19TH AND YALE

0520 PM     HAIL             HOUSTON                 29.77N 95.39W
03/19/2005  0.75 INCH        HARRIS             TX   OTHER FEDERAL

            3/4 INCH HAIL COVERING THE GROUND IN THE HEIGHTS

0522 PM     HAIL             COLLEGE STATION         30.60N 96.31W
03/19/2005  0.50 INCH        BRAZOS             TX   TRAINED SPOTTER

            DIME SIZE HAIL AT POST OAK MALL

0522 PM     HAIL             HOUSTON                 29.77N 95.39W
03/19/2005  0.25 INCH        HARRIS             TX   AMATEUR RADIO

            HIGHWAY 59 AND JENSEN DRIVE

0523 PM     HAIL             COLLEGE STATION         30.60N 96.31W
03/19/2005  0.75 INCH        BRAZOS             TX   LAW ENFORCEMENT

            3/4 INCH HAIL AT POST OAK MALL IN COLLEGE STATION

0530 PM     HAIL             CALDWELL                30.53N 96.70W
03/19/2005  0.25 INCH        BURLESON           TX   LAW ENFORCEMENT

            PEA SIZE HAIL REPORTED COUNTY-WIDE.

0539 PM     HAIL             HOUSTON                 29.77N 95.39W
03/19/2005  0.50 INCH        HARRIS             TX   OTHER FEDERAL

            1/2 INCH HAIL ON THE HARDY TOLL ROAD

0545 PM     HAIL             4 W CALDWELL            30.53N 96.77W
03/19/2005  2.00 INCH        BURLESON           TX   LAW ENFORCEMENT

            SHERIFFS REPORTED 2 INCH HAIL COVERING THE GROUND ALONG
            FM-908.

0546 PM     HAIL             CALDWELL                30.53N 96.70W
03/19/2005  1.75 INCH        BURLESON           TX   EMERGENCY MNGR

0549 PM     HAIL             CONROE                  30.32N 95.47W
03/19/2005  0.75 INCH        MONTGOMERY         TX   AIRPLANE PILOT

            3/4 INCH HAIL REPORTED AT THE LONESTAR EXECUTIVE AIRPORT
            IN CONROE. CALL RECEIVED VIA TULSA WFO.

0550 PM     HAIL             BRYAN                   30.67N 96.37W
03/19/2005  1.75 INCH        BRAZOS             TX   LAW ENFORCEMENT

            GOLFBALL HAIL IN BRYAN

0602 PM     HAIL             BRYAN                   30.67N 96.37W
03/19/2005  1.75 INCH        BRAZOS             TX   LAW ENFORCEMENT

            NUMEROUS REPORTS FROM THE PUBLIC OF NICKEL TO GOLFBALL
            HAIL IN COLLEGE STATION

0602 PM     HAIL             COLLEGE STATION         30.60N 96.31W
03/19/2005  0.75 INCH        BRAZOS             TX   TRAINED SPOTTER

            DIME TO NICKEL SIZE HAIL AT HIGHWAY 6 AND BARRON ROAD ON
            SOUTH SIDE OF COLLEGE STATION

0608 PM     HAIL             COLLEGE STATION         30.60N 96.31W
03/19/2005  0.88 INCH        BRAZOS             TX   PUBLIC

            DIME TO NICKEL SIZE HAIL AT SW PARKWAY AND WALBORN IN
            COLLEGE STATION

0610 PM     HAIL             2 NE WILLIS             30.45N 95.45W
03/19/2005  0.75 INCH        MONTGOMERY         TX   PUBLIC

            NICKEL SIZE HAIL ON WAUKEGAN ROAD TO THE NE OF THE COUNTY
            AIRPORT

0625 PM     HAIL             COLLEGE STATION         30.60N 96.31W
03/19/2005  1.75 INCH        BRAZOS             TX   LAW ENFORCEMENT

            NUMEROUS REPORTS OF GOLFBALL SIZE HAIL IN COLLEGE STATION
            BETWEEN 6 AND 615 PM. ALSO...LEMON SIZE HAIL REPORTED IN
            COLLEGE STATION.

0630 PM     TSTM WND GST     NE CONROE               30.32N 95.47W
03/19/2005  0 MPH            MONTGOMERY         TX   TRAINED SPOTTER

            60 MPH WIND GUSTS NORTHEAST OF CONROE.

0635 PM     HAIL             COLLEGE STATION         30.60N 96.31W
03/19/2005  1.75 INCH        BRAZOS             TX   TRAINED SPOTTER

            GOLFBALL SIZE HAIL MOUNDED ON THE YARD LIKE SNOWDRIFTS.
            SOUTH SIDE OF COLLEGE STATION.

0716 PM     FLOOD            COLLEGE STATION         30.60N 96.31W
03/19/2005                   BRAZOS             TX   LAW ENFORCEMENT

            MINOR FLOODING...WATER OVER THE ROADWAY ON BARON ROAD
            JUST SOUTH OF COLLEGE STATION.

0724 PM     HAIL             3 W LIVINGSTON          30.71N 94.99W
03/19/2005  0.50 INCH        POLK               TX   LAW ENFORCEMENT

            PEA TO DIME SIZE HAIL.

0800 PM     FLOOD            BRYAN                   30.67N 96.37W
03/19/2005                   BRAZOS             TX   LAW ENFORCEMENT

            ROAD CLOSED DUE TO FLOODING...FOUNTAIN AND WEST CARSON.

0800 PM     FLOOD            2 E WILLIS              30.42N 95.44W
03/19/2005                   MONTGOMERY         TX   LAW ENFORCEMENT

            MINOR FLOODING...WATER OVER THE ROADWAY AT FM 1097 AND
            RUNNING BEAR ROAD.

0808 PM     HAIL             4 E MOSCOW              30.91N 94.76W
03/19/2005  0.88 INCH        POLK               TX   PUBLIC

            NICKEL SIZE HAIL IN CAMDEN.

1046 PM     TSTM WND GST     WHARTON                 29.32N 96.10W
03/19/2005  60 MPH           WHARTON            TX   NWS EMPLOYEE

&&

PL

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 19, 6:00 PM CST	Severe Thunderstorm Warning	HGX	Brazos, Burleson	48 min
Mar 19, 6:16 PM CST	Severe Thunderstorm Warning	HGX	Grimes, Waller	44 min
Mar 19, 6:30 PM CST	Severe Thunderstorm Warning	HGX	San Jacinto, Walker	45 min
Mar 19, 6:58 PM CST	Severe Thunderstorm Warning	HGX	Montgomery, Walker	36 min
Mar 19, 7:01 PM CST	Severe Thunderstorm Warning	HGX	Harris, Montgomery	34 min
Mar 19, 7:21 PM CST	Severe Thunderstorm Warning	HGX	Montgomery, Walker	29 min
Mar 19, 7:31 PM CST	Severe Thunderstorm Warning	HGX	Polk, San Jacinto, Trinity	44 min
Mar 19, 9:03 PM CST	Severe Thunderstorm Warning	HGX	Colorado, Jackson, Wharton	57 min
Mar 19, 10:00 PM CST	Severe Thunderstorm Warning	HGX	Jackson, Matagorda, Wharton	60 min
Mar 19, 10:18 PM CST	Special Marine Warning	HGX		117 min
Mar 19, 10:51 PM CST	Severe Thunderstorm Warning	HGX	Brazoria	39 min
Mar 19, 11:16 PM CST	Severe Thunderstorm Warning	HGX	Fort Bend	44 min
Mar 19, 11:22 PM CST	Special Marine Warning	HGX		113 min
Mar 19, 11:23 PM CST	Tornado Warning	HGX	Brazoria, Colorado, Fort Bend	270 days
Mar 19, 11:40 PM CST	Severe Thunderstorm Warning	HGX	Brazoria, Galveston	65 min
Mar 20, 12:51 AM CST	Special Marine Warning	HGX		84 min
Mar 20, 1:06 AM CST	Severe Thunderstorm Warning	HGX	Galveston	54 min
Mar 20, 4:59 AM CST	Special Marine Warning	HGX		91 min

Nearby

Severe Thunderstorm Warnings in Texas, 2005 Every severe thunderstorm warning in 2005

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.