Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 83, NWS Houston/Galveston, TX

November 22, 2014Colorado County, Texas

NWS Houston/Galveston, TX issued this severe thunderstorm warning at Nov 22, 2014, 2:57 PM CST for Colorado County, Texas. It was in force for 33 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: Nov 22, 2014, 2:57 PM CST (20:57 UTC)
Expired: Nov 22, 2014, 3:30 PM CST
In force: 33 min
Issued by: NWS Houston/Galveston, TX
Area: Storm-based polygon

County Colorado County, TX

The radar

The Houston radar (KHGX), 141 km from the middle of the area, began a volume at 20:57 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

Corpus Christi, TX (KCRP), launched 12:00Z, 9.0 hours before the alert went out and 225 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: 1125 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 594 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 312 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.4

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 Nov 22, 11:38 AM CST, 3 hours 19 minutes earlier.

Area forecast discussion, Nov 22, 11:38 AM CST, 3 hours 19 minutes before

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Hazardous weather outlook, Nov 22, 7:42 AM CST, 7 hours 15 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
Nov 22, 3:45 PM CST	Special Weather Statement	HGX	Washington	30 min
Nov 22, 4:12 PM CST	Special Weather Statement	HGX	Washington	33 min
Nov 22, 4:53 PM CST	Special Weather Statement	HGX	Grimes	52 min
Nov 22, 5:01 PM CST	Areal Flood Advisory	HGX	Austin, Colorado, Washington	59 min
Nov 22, 5:28 PM CST	Areal Flood Advisory	HGX	Austin, Brazos, Burleson, Colorado, Grimes, Waller and 1 more	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2014 Every severe thunderstorm warning in 2014

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.