Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 158, NWS Amarillo, TX

May 23, 2007Roberts County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 23, 2007, 11:42 PM CDT for Roberts County, Texas. It was in force for 63 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: May 23, 2007, 11:42 PM CDT (04:42 UTC)
Expired: May 24, 2007, 12:45 AM CDT
In force: 63 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

County Roberts County, TX

The radar

The Amarillo radar (KAMA), 105 km from the middle of the area, began a volume at 04:45 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
May 23, 10:48 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.7 hours before the alert went out and 105 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: 1239 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1675 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 11.4

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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at May 23, 11:14 PM CDT, 28 minutes earlier.

Area forecast discussion, May 23, 11:14 PM CDT, 28 minutes before

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Hazardous weather outlook, May 23, 11:22 PM CDT, 20 minutes before

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In the hours before

Local storm report, May 23, 11:06 PM CDT, 36 minutes before

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Local storm report, May 23, 11:09 PM CDT, 33 minutes before

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Local storm report, May 23, 11:15 PM CDT, 27 minutes before

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Local storm report, May 23, 11:17 PM CDT, 25 minutes before

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Local storm report, May 23, 11:18 PM CDT, 24 minutes before

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Local storm report, May 23, 11:22 PM CDT, 20 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 7:12 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	63 min
May 23, 7:20 PM CDT	Tornado Warning	AMA	Lipscomb	55 min
May 23, 7:25 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	65 min
May 23, 7:27 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson	63 min
May 23, 7:28 PM CDT	Tornado Warning	AMA	Hutchinson	62 min
May 23, 7:42 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	63 min
May 23, 8:17 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	58 min
May 23, 8:24 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree, Roberts	66 min
May 23, 8:30 PM CDT	Tornado Warning	AMA	Hutchinson, Roberts	60 min
May 23, 8:46 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	59 min
May 23, 9:23 PM CDT	Tornado Warning	AMA	Hansford	37 min
May 23, 9:28 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree, Roberts	62 min
May 23, 9:29 PM CDT	Tornado Warning	AMA	Roberts	61 min
May 23, 9:41 PM CDT	Tornado Warning	AMA	Ochiltree	49 min
May 23, 9:55 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	65 min
May 23, 10:02 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	58 min
May 23, 10:14 PM CDT	Flash Flood Warning	AMA	Lipscomb, Ochiltree	4 hr
May 23, 10:32 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	58 min
May 23, 10:38 PM CDT	Tornado Warning	AMA	Lipscomb	52 min
May 23, 10:58 PM CDT	Flash Flood Warning	AMA	Roberts	3 hr
May 23, 11:00 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	60 min
May 23, 11:33 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	57 min
May 24, 12:00 AM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	45 min
May 24, 12:21 AM CDT	Severe Thunderstorm Warning	AMA	Hemphill	54 min
May 23, 8:15 PM CDT	Severe Thunderstorm Warning	AMA	Texas	60 min
May 23, 9:16 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	59 min
May 23, 9:27 PM CDT	Tornado Warning	AMA	Beaver	48 min
May 23, 11:26 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	49 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007 Every severe thunderstorm warning in 2007

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.