Alert archive / Texas / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 68, NWS San Angelo, TX

April 20, 2006McCulloch County, Mason County, San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 20, 2006, 6:57 PM CDT for McCulloch County, Mason County, San Saba County, Texas. It was in force for 48 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 20, 2006, 6:57 PM CDT (23:57 UTC)
Expired: Apr 20, 2006, 7:45 PM CDT
In force: 48 min
Issued by: NWS San Angelo, TX
Area: Counties, with a storm outline in the text

Counties Mason County, TX, McCulloch County, TX, San Saba County, TX

The radar

The San Angelo radar (KSJT), 135 km from the middle of the area, began a volume at 23:59 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 20, 3:24 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 12.0 hours before the alert went out and 247 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: 1378 J/kg
Mixed-layer CIN: -155 J/kg
Mixed-layer LCL: 702 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 20, 6:43 PM CDT, 14 minutes earlier.

Area forecast discussion, Apr 20, 6:43 PM CDT, 14 minutes before

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Hazardous weather outlook, Apr 20, 3:05 PM CDT, 3 hours 52 minutes before

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In the hours before

Local storm report, Apr 20, 2:43 PM CDT, 4 hours 14 minutes before

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Special weather statement, Apr 20, 2:45 PM CDT, 4 hours 12 minutes before

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Special weather statement, Apr 20, 3:25 PM CDT, 3 hours 32 minutes before

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Special weather statement, Apr 20, 3:28 PM CDT, 3 hours 29 minutes before

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Special weather statement, Apr 20, 4:33 PM CDT, 2 hours 24 minutes before

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Special weather statement, Apr 20, 5:23 PM CDT, 1 hour 34 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 7:11 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	34 min
Apr 19, 7:42 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Sutton	22 min
Apr 19, 7:45 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Mason	38 min
Apr 19, 8:11 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Runnels	49 min
Apr 19, 8:35 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	40 min
Apr 19, 8:50 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	55 min
Apr 19, 9:04 PM CDT	Severe Thunderstorm Warning	SJT	Sterling	41 min
Apr 19, 9:07 PM CDT	Severe Thunderstorm Warning	SJT	Nolan	53 min
Apr 19, 9:43 PM CDT	Severe Thunderstorm Warning	SJT	Coke, Nolan, Sterling	32 min
Apr 19, 9:52 PM CDT	Severe Thunderstorm Warning	SJT	Taylor	53 min
Apr 20, 12:39 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones, Nolan, Taylor	36 min
Apr 20, 1:12 AM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	33 min
Apr 20, 1:44 AM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	31 min
Apr 20, 3:24 AM CDT	Flash Flood Watch	SJT	Callahan, Fisher, Jones, Nolan, Shackelford, Taylor	7 hr
Apr 20, 10:03 AM CDT	Flash Flood Watch	SJT	Callahan, Fisher, Haskell, Jones, Nolan, Shackelford and 2 more	18 hr
Apr 20, 11:27 AM CDT	Severe Thunderstorm Warning	SJT	Schleicher, Tom Green	63 min
Apr 20, 12:00 PM CDT	Severe Thunderstorm Warning	SJT	Sutton	30 min
Apr 20, 12:27 PM CDT	Flash Flood Warning	SJT	Kimble, Sutton	2 hr
Apr 20, 12:32 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Sutton	43 min
Apr 20, 1:14 PM CDT	Flash Flood Warning	SJT	Kimble	2 hr
Apr 20, 1:17 PM CDT	Severe Thunderstorm Warning	SJT	Kimble	58 min
Apr 20, 1:26 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Tom Green	49 min
Apr 20, 2:13 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Concho, McCulloch	47 min
Apr 20, 2:14 PM CDT	Severe Thunderstorm Warning	SJT	Menard, Schleicher	61 min
Apr 20, 4:17 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, San Saba	58 min
Apr 20, 4:42 PM CDT	Severe Thunderstorm Warning	SJT	Concho	63 min
Apr 20, 5:25 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	50 min
Apr 20, 5:34 PM CDT	Severe Thunderstorm Warning	SJT	Concho, McCulloch, Menard	41 min
Apr 20, 6:04 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Mason, Menard, San Saba	56 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.