Alert archive / Texas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 145, NWS Houston/Galveston, TX

July 7, 2005Montgomery County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Jul 7, 2005, 5:49 PM CDT for Montgomery County, Texas. It was in force for 41 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: Jul 7, 2005, 5:49 PM CDT (22:49 UTC)
Expired: Jul 7, 2005, 6:30 PM CDT
In force: 41 min
Issued by: NWS Houston/Galveston, TX
Area: Counties, with a storm outline in the text

County Montgomery County, TX

The radar

The Houston radar (KHGX), 101 km from the middle of the area, began a volume at 22:51 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

Fort Worth, TX (KFWD), launched 12:00Z, 10.8 hours before the alert went out and 328 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: 367 J/kg
Mixed-layer CIN: -194 J/kg
Mixed-layer LCL: 1229 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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 Jul 7, 2:37 PM CDT, 3 hours 12 minutes earlier.

Area forecast discussion, Jul 7, 2:37 PM CDT, 3 hours 12 minutes before

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Hazardous weather outlook, Jul 7, 6:30 AM CDT, 11 hours 19 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HOUSTON/GALVESTON TX
630 AM CDT THU JUL 7 2005

GMZ330-335-TXZ163-164-176>179-195>200-210>214-226-227-235>238-080300-
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-
630 AM CDT THU JUL 7 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST TEXAS.

.DAY ONE...TODAY AND TONIGHT.

...HEAT ADVISORY IS IN EFFECT FOR THE COASTAL COUNTIES TIL 7 PM...

ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE
TODAY. A FEW STORM THIS AFTERNOON DURING PEAK HEATING MAY BE STRONG
ENOUGH PRODUCE MICROBURST WINDS 30 TO 45 MPH BUT SHOULD BE VERY
ISOLATED IN NATURE. RAINFALL TOTALS OF 1 TO 2 INCHES WILL BE POSSIBLE
IN THESE STRONGER STORMS.

IN ADDITION...A HEAT ADVISORY IS IN EFFECT FOR THE COASTAL
COUNTIES OF BRAZORIA...CHAMBERS...GALVESTON...JACKSON...AND MATAGORDA
THROUGH 7 PM. NEAR RECORD HIGH TEMPERATURES COMBINED WITH HIGH
RELATIVE HUMIDITY VALUES WILL CREATE HEAT INDEX VALUES OF 105 TO 111
DEGREES ACROSS THE ADVISORY AREA.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 7, 12:59 PM CDT	Severe Thunderstorm Warning	HGX	Brazoria	31 min
Jul 7, 1:04 PM CDT	Severe Thunderstorm Warning	HGX	Houston	26 min
Jul 7, 2:24 PM CDT	Severe Thunderstorm Warning	HGX	Matagorda	36 min
Jul 7, 2:31 PM CDT	Tornado Warning	HGX	Matagorda	44 min
Jul 7, 4:13 PM CDT	Severe Thunderstorm Warning	HGX	Liberty	47 min
Jul 7, 4:19 PM CDT	Severe Thunderstorm Warning	HGX	Montgomery	41 min
Jul 7, 5:00 PM CDT	Severe Thunderstorm Warning	HGX	Liberty	45 min
Jul 7, 5:14 PM CDT	Severe Thunderstorm Warning	HGX	Harris, Montgomery	46 min
Jul 7, 5:59 PM CDT	Severe Thunderstorm Warning	HGX	Harris	46 min
Jul 7, 6:23 PM CDT	Severe Thunderstorm Warning	HGX	Washington	37 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.