Alert archive / Texas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 256, NWS Fort Worth, TX

April 25, 2008Robertson County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 25, 2008, 11:34 PM CDT for Robertson County, Texas. It was in force for 17 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, 2008, 11:34 PM CDT (04:34 UTC)
Expired: Apr 25, 2008, 11:51 PM CDT
In force: 17 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon

County Robertson County, TX

The radar

The Ft Hood radar (KGRK), 90 km from the middle of the area, began a volume at 04:37 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 00:00Z, 4.6 hours before the alert went out and 214 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: 1719 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: -63 m²/s²
0-3 km storm-relative helicity: 229 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 25, 10:03 PM CDT, 1 hour 31 minutes earlier.

Area forecast discussion, Apr 25, 10:03 PM CDT, 1 hour 31 minutes before

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Hazardous weather outlook, Apr 25, 11:00 PM CDT, 34 minutes before

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In the hours before

Local storm report, Apr 25, 8:10 PM CDT, 3 hours 24 minutes before

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Local storm report, Apr 25, 8:41 PM CDT, 2 hours 53 minutes before

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Local storm report, Apr 25, 8:41 PM CDT, 2 hours 53 minutes before

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Local storm report, Apr 25, 8:55 PM CDT, 2 hours 39 minutes before

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Local storm report, Apr 25, 8:59 PM CDT, 2 hours 35 minutes before

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Local storm report, Apr 25, 9:19 PM CDT, 2 hours 15 minutes before

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The office that day

Everything else NWS Fort Worth, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 25, 7:06 PM CDT	Severe Thunderstorm Warning	FWD	Henderson, Kaufman, Van Zandt	34 min
Apr 25, 7:25 PM CDT	Severe Thunderstorm Warning	FWD	Bell	35 min
Apr 25, 7:40 PM CDT	Severe Thunderstorm Warning	FWD	Milam	65 min
Apr 25, 7:48 PM CDT	Special Weather Statement	FWD	Kaufman	27 min
Apr 25, 8:44 PM CDT	Severe Thunderstorm Warning	FWD	Milam	31 min
Apr 25, 9:17 PM CDT	Severe Thunderstorm Warning	FWD	Milam	28 min
Apr 25, 9:27 PM CDT	Areal Flood Advisory	FWD	Milam	2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2008 Every severe thunderstorm warning in 2008

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.