Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 166, NWS Amarillo, TX

July 16, 2009Lipscomb County, Ochiltree County, Texas; Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 16, 2009, 7:03 PM CDT for Lipscomb County, Ochiltree County, Texas; Beaver County, Oklahoma. It was in force for 57 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: Jul 16, 2009, 7:03 PM CDT (00:03 UTC)
Expired: Jul 16, 2009, 8:00 PM CDT
In force: 57 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

Counties Beaver County, OK, Lipscomb County, TX, Ochiltree County, TX

The radar

The Dodge City radar (KDDC), 155 km from the middle of the area, began a volume at 00:05 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

Dodge City, (KDDC), launched 00:00Z, 0.1 hours before the alert went out and 158 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: 1359 J/kg
Mixed-layer CIN: -104 J/kg
Mixed-layer LCL: 1468 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 255 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 8.7

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 Jul 16, 6:36 PM CDT, 27 minutes earlier.

Area forecast discussion, Jul 16, 6:36 PM CDT, 27 minutes before

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Hazardous weather outlook, Jul 16, 1:00 PM CDT, 6 hours 3 minutes before

TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
100 PM CDT THU JUL 16 2009

OKZ001>003-TXZ001>020-171100-
ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH-
DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE-
OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER-
100 PM CDT THU JUL 16 2009

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

.DAY ONE...

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON AND TONIGHT ACROSS ALL OF THE OKLAHOMA AND TEXAS PANHANDLES
DUE TO THE COMBINATION OF A WEAK COLD FRONT...SUFFICIENT MOISTURE...
AND AN APPROACHING MINOR UPPER LEVEL LOW PRESSURE SYSTEM FROM THE
NORTHWEST. A FEW STORMS THAT DEVELOP WILL HAVE THE POTENTIAL TO
BECOME SEVERE...WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY
THREATS.

.DAYS TWO THROUGH SEVEN...

THERE IS A SLIGHT CHANCE TO CHANCE OF THUNDERSTORMS ACROSS ALL OF
THE OKLAHOMA AND TEXAS PANHANDLES FRIDAY AFTERNOON THROUGH SATURDAY
NIGHT...AND AGAIN ON SUNDAY NIGHT...MONDAY NIGHT...AND TUESDAY NIGHT.
SOME OF THE STORMS WHICH DEVELOP DURING THIS TIME MAY BECOME STRONG
TO SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE PRIMARY THREATS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS ACROSS ALL OF THE
OKLAHOMA AND TEXAS PANHANDLES SHOULD REMAIN ALERT AND BE READY FOR
POSSIBLE ACTIVATION LATER THIS AFTERNOON AND TONIGHT.

ANDRADE

In the hours before

Local storm report, Jul 16, 5:58 PM CDT, 1 hour 5 minutes before

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Local storm report, Jul 16, 6:01 PM CDT, 1 hour 2 minutes before

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Local storm report, Jul 16, 6:18 PM CDT, 45 minutes before

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Local storm report, Jul 16, 6:22 PM CDT, 41 minutes before

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Special weather statement, Jul 16, 6:33 PM CDT, 30 minutes before

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Special weather statement, Jul 16, 6:57 PM CDT, 6 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
Jul 16, 7:51 PM CDT	Severe Thunderstorm Warning	AMA	Gray, Hemphill, Roberts, Wheeler	54 min
Jul 16, 7:53 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Lipscomb	44 min
Jul 16, 8:21 PM CDT	Severe Thunderstorm Warning	AMA	Collingsworth, Donley, Gray, Wheeler	30 min
Jul 17, 3:52 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Sherman	38 min
Jul 17, 4:23 PM CDT	Severe Thunderstorm Warning	AMA	Dallam, Hartley, Hutchinson, Moore, Sherman	67 min
Jul 17, 4:45 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	60 min
Jul 17, 5:16 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	59 min
Jul 17, 5:21 PM CDT	Severe Thunderstorm Warning	AMA	Hartley, Moore, Oldham, Potter	24 min

Nearby

Severe Thunderstorm Warnings in Texas, 2009 Severe Thunderstorm Warnings in Oklahoma, 2009 Every severe thunderstorm warning in 2009

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.