Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 147, NWS Amarillo, TX

June 12, 2015Armstrong County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 12, 2015, 5:50 PM CDT for Armstrong County, Texas. It was in force for 38 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: Jun 12, 2015, 5:50 PM CDT (22:50 UTC)
Expired: Jun 12, 2015, 6:28 PM CDT
In force: 38 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.5 in
Wind: 50.0 mph

County Armstrong County, TX

The radar

The Amarillo radar (KAMA), 44 km from the middle of the area, began a volume at 22:52 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
Jun 12, 2:47 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 10.8 hours before the alert went out and 43 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: 153 J/kg
Mixed-layer CIN: -247 J/kg
Mixed-layer LCL: 1122 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -81 m²/s²
0-3 km storm-relative helicity: -39 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 Jun 12, 4:31 PM CDT, 1 hour 19 minutes earlier.

Area forecast discussion, Jun 12, 4:31 PM CDT, 1 hour 19 minutes before

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Hazardous weather outlook, Jun 12, 5:06 PM CDT, 44 minutes before

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In the hours before

Local storm report, Jun 12, 3:46 PM CDT, 2 hours 4 minutes before

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Special weather statement, Jun 12, 3:56 PM CDT, 1 hour 54 minutes before

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Local storm report, Jun 12, 4:39 PM CDT, 1 hour 11 minutes before

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Special weather statement, Jun 12, 5:19 PM CDT, 31 minutes before

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Special weather statement, Jun 12, 5:39 PM CDT, 11 minutes before

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Special weather statement, Jun 12, 5:41 PM CDT, 9 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
Jun 11, 7:46 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Ochiltree	74 min
Jun 11, 8:42 PM CDT	Special Weather Statement	AMA	Oldham	18 min
Jun 11, 8:52 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	53 min
Jun 11, 9:10 PM CDT	Areal Flood Advisory	AMA	Ochiltree	3 hr
Jun 11, 9:44 PM CDT	Areal Flood Advisory	AMA	Lipscomb	6 hr
Jun 11, 9:44 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	76 min
Jun 11, 10:29 PM CDT	Special Weather Statement	AMA	Potter	31 min
Jun 11, 10:38 PM CDT	Special Weather Statement	AMA	Dallam	22 min
Jun 11, 10:50 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Potter	38 min
Jun 11, 11:36 PM CDT	Special Weather Statement	AMA	Hansford, Hutchinson	39 min
Jun 12, 12:29 AM CDT	Special Weather Statement	AMA	Hutchinson, Roberts	46 min
Jun 12, 12:38 AM CDT	Special Weather Statement	AMA	Moore	37 min
Jun 12, 12:55 AM CDT	Special Weather Statement	AMA	Oldham	35 min
Jun 12, 1:03 AM CDT	Special Weather Statement	AMA	Lipscomb	42 min
Jun 12, 1:10 AM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hemphill, Hutchinson, Roberts	39 min
Jun 12, 1:30 AM CDT	Areal Flood Advisory	AMA	Carson, Hartley, Hutchinson, Moore, Oldham, Potter	5 hr
Jun 12, 1:54 AM CDT	Special Weather Statement	AMA	Oldham	36 min
Jun 12, 2:20 AM CDT	Special Weather Statement	AMA	Potter	25 min
Jun 12, 2:46 AM CDT	Special Weather Statement	AMA	Potter	44 min
Jun 12, 2:57 AM CDT	Areal Flood Advisory	AMA	Potter, Randall	4 hr
Jun 12, 3:43 AM CDT	Flash Flood Watch	AMA	Armstrong, Carson, Collingsworth, Donley, Gray, Hemphill and 4 more	24 hr
Jun 12, 9:16 AM CDT	Special Weather Statement	AMA	Wheeler	59 min
Jun 12, 3:13 PM CDT	Special Weather Statement	AMA	Deaf Smith	32 min
Jun 12, 3:21 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	54 min
Jun 12, 3:23 PM CDT	Tornado Warning Tornado observed	AMA	Deaf Smith	17 min
Jun 12, 3:56 PM CDT	Special Weather Statement	AMA	Collingsworth	34 min
Jun 12, 4:04 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth	28 min
Jun 12, 5:19 PM CDT	Special Weather Statement	AMA	Collingsworth	41 min
Jun 12, 5:32 PM CDT	Areal Flood Advisory	AMA	Collingsworth	6 hr
Jun 12, 5:39 PM CDT	Special Weather Statement	AMA	Wheeler	36 min
Jun 12, 5:41 PM CDT	Special Weather Statement	AMA	Armstrong	34 min
Jun 12, 6:47 PM CDT	Special Weather Statement	AMA	Collingsworth, Donley	58 min
Jun 11, 7:42 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	93 min
Jun 11, 7:51 PM CDT	Special Weather Statement	AMA	Texas	39 min
Jun 11, 10:24 PM CDT	Special Weather Statement	AMA	Texas	36 min
Jun 11, 10:52 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	38 min
Jun 11, 11:31 PM CDT	Special Weather Statement	AMA	Texas	44 min
Jun 11, 11:40 PM CDT	Special Weather Statement	AMA	Beaver	50 min
Jun 11, 11:53 PM CDT	Areal Flood Advisory	AMA	Beaver	6 hr
Jun 12, 12:47 AM CDT	Areal Flood Advisory	AMA	Texas	4 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.