Alert archive / Texas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 177, NWS Amarillo, TX

October 10, 2014Hemphill County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Oct 10, 2014, 12:55 AM CDT for Hemphill County, Texas. It was in force for 35 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: Oct 10, 2014, 12:55 AM CDT (05:55 UTC)
Expired: Oct 10, 2014, 1:30 AM CDT
In force: 35 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

County Hemphill County, TX

The radar

The Amarillo radar (KAMA), 147 km from the middle of the area, began a volume at 05:55 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
Oct 9, 5:16 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 5.9 hours before the alert went out and 146 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: 1057 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1599 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 138 m²/s²
Significant tornado parameter: 0.2
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 Amarillo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 10, 12:41 AM CDT, 14 minutes earlier.

Area forecast discussion, Oct 10, 12:41 AM CDT, 14 minutes before

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Hazardous weather outlook, Oct 9, 12:27 PM CDT, 12 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
1227 PM CDT THU OCT 9 2014

OKZ001>003-TXZ001>020-100530-
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
1227 PM CDT THU OCT 9 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE TEXAS AND OKLAHOMA
PANHANDLES.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL BE POSSIBLE OVER THE MAJORITY OF THE OKLAHOMA AND
TEXAS PANHANDLES TODAY AND TONIGHT. THE MOST LIKELY AREA FOR
THUNDERSTORM ACTIVITY WILL BE OVER THE OKLAHOMA PANHANDLE AND
NORTHERN TEXAS PANHANDLE THIS EVENING AND OVERNIGHT. A FEW STORMS
COULD BECOME STRONG TO SEVERE THIS AFTERNOON AND THIS EVENING. THESE
STORMS COULD PRODUCE HAIL UP TO THE SIZE OF GOLFBALLS AND DAMAGING
WINDS. IN ADDITION...THE RISK FOR LOCALLY HEAVY RAIN LEADING TO FLASH
FLOODING COULD INCREASE OVERNIGHT...ESPECIALLY OVER THE OKLAHOMA
PANHANDLE AND NORTHERN TEXAS PANHANDLE.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THUNDERSTORMS WILL BE POSSIBLE OVER THE TEXAS AND OKLAHOMA PANHANDLES
FRIDAY AND FRIDAY NIGHT...AND AGAIN SUNDAY AND SUNDAY NIGHT. LOCALLY
HEAVY RAIN LEADING TO FLASH FLOODING COULD BE POSSIBLE FRIDAY AND
FRIDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

LIMITED SPOTTER ACTIVATION MAY BECOME NECESSARY THIS AFTERNOON AND
THIS EVENING.

In the hours before

Local storm report, Oct 9, 11:17 PM CDT, 1 hour 38 minutes before

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Special weather statement, Oct 9, 11:17 PM CDT, 1 hour 38 minutes before

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Special weather statement, Oct 9, 11:44 PM CDT, 1 hour 11 minutes before

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Special weather statement, Oct 9, 11:56 PM CDT, 59 minutes before

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Local storm report, Oct 10, 12:03 AM CDT, 52 minutes before

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Local storm report, Oct 10, 12:16 AM CDT, 39 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
Oct 9, 7:28 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter	62 min
Oct 9, 7:49 PM CDT	Special Weather Statement	AMA	Sherman	41 min
Oct 9, 7:59 PM CDT	Special Weather Statement	AMA	Hutchinson	46 min
Oct 9, 8:24 PM CDT	Tornado Warning	AMA	Carson	36 min
Oct 9, 8:53 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Roberts	59 min
Oct 9, 9:00 PM CDT	Special Weather Statement	AMA	Roberts	45 min
Oct 9, 9:08 PM CDT	Tornado Warning	AMA	Carson, Gray	52 min
Oct 9, 9:42 PM CDT	Severe Thunderstorm Warning	AMA	Gray, Hemphill, Roberts, Wheeler	63 min
Oct 9, 9:54 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley	51 min
Oct 9, 10:07 PM CDT	Tornado Warning	AMA	Dallam, Hartley	23 min
Oct 9, 10:34 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore	41 min
Oct 9, 10:35 PM CDT	Severe Thunderstorm Warning	AMA	Wheeler	40 min
Oct 9, 10:36 PM CDT	Special Weather Statement	AMA	Sherman	39 min
Oct 9, 11:01 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Sherman	42 min
Oct 9, 11:08 PM CDT	Severe Thunderstorm Warning	AMA	Moore	27 min
Oct 9, 11:13 PM CDT	Special Weather Statement	AMA	Wheeler	32 min
Oct 9, 11:17 PM CDT	Special Weather Statement	AMA	Ochiltree	43 min
Oct 9, 11:44 PM CDT	Special Weather Statement	AMA	Hansford	46 min
Oct 9, 11:56 PM CDT	Special Weather Statement	AMA	Lipscomb, Roberts	49 min
Oct 10, 12:11 AM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb, Roberts	64 min
Oct 9, 7:37 PM CDT	Special Weather Statement	AMA	Cimarron	53 min
Oct 9, 8:27 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	48 min
Oct 9, 8:30 PM CDT	Severe Thunderstorm Warning	AMA	Texas	32 min
Oct 9, 9:56 PM CDT	Special Weather Statement	AMA	Texas	49 min

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.