Alert archive / Texas / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 29, NWS Houston/Galveston, TX

April 25, 2006Harris County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Apr 25, 2006, 7:59 PM CDT for Harris County, Texas. It was in force for 46 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: Apr 25, 2006, 7:59 PM CDT (00:59 UTC)
Expired: Apr 25, 2006, 8:45 PM CDT
In force: 46 min
Issued by: NWS Houston/Galveston, TX
Area: Counties, with a storm outline in the text

County Harris County, TX

The radar

The Houston radar (KHGX), 52 km from the middle of the area, began a volume at 00:58 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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 25, 3:05 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 00:00Z, 1.0 hours before the alert went out and 213 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: 2353 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 758 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

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 Apr 25, 6:46 PM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, Apr 25, 6:46 PM CDT, 1 hour 13 minutes before

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Hazardous weather outlook, Apr 25, 3:36 PM CDT, 4 hours 23 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 25, 8:07 PM CDT	Severe Thunderstorm Warning	HGX	Liberty	38 min
Apr 25, 9:22 PM CDT	Severe Thunderstorm Warning	HGX	Liberty	38 min
Apr 25, 10:15 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	45 min
Apr 25, 11:00 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	45 min
Apr 25, 11:49 PM CDT	Severe Thunderstorm Warning	HGX	Chambers	41 min
Apr 26, 12:28 AM CDT	Severe Thunderstorm Warning	HGX	Brazos, Burleson	47 min
Apr 26, 12:32 AM CDT	Severe Thunderstorm Warning	HGX	Chambers	43 min
Apr 26, 12:36 AM CDT	Severe Thunderstorm Warning	HGX	Washington	39 min
Apr 26, 12:40 AM CDT	Severe Thunderstorm Warning	HGX	Grimes	50 min
Apr 26, 1:03 AM CDT	Tornado Warning	HGX	Washington	27 min
Apr 26, 1:09 AM CDT	Tornado Warning	HGX	Grimes, Waller	51 min
Apr 26, 1:10 AM CDT	Severe Thunderstorm Warning	HGX	Walker	50 min
Apr 26, 1:32 AM CDT	Severe Thunderstorm Warning	HGX	Polk, San Jacinto, Trinity	43 min
Apr 26, 1:36 AM CDT	Severe Thunderstorm Warning	HGX	Austin, Colorado	45 min
Apr 26, 2:04 AM CDT	Severe Thunderstorm Warning	HGX	Harris, Waller	31 min
Apr 26, 2:31 AM CDT	Severe Thunderstorm Warning	HGX	Montgomery	44 min

Nearby

Severe Thunderstorm Warnings in Texas, 2006 Every severe thunderstorm warning in 2006

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.