Alert archive / Texas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 137, NWS Amarillo, TX

June 17, 20096 counties in Texas; Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 17, 2009, 5:24 PM CDT for 6 counties in Texas; Beaver County, Oklahoma. It was in force for 36 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 17, 2009, 5:24 PM CDT (22:24 UTC)
Expired: Jun 17, 2009, 6:00 PM CDT
In force: 36 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

Counties Beaver County, OK, Donley County, TX, Gray County, TX, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 124 km from the middle of the area, began a volume at 22:24 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 17, 3:55 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 10.4 hours before the alert went out and 217 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: 2466 J/kg
Mixed-layer CIN: -316 J/kg
Mixed-layer LCL: 1627 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 202 m²/s²
0-3 km storm-relative helicity: 235 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 17, 4:15 PM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, Jun 17, 4:15 PM CDT, 1 hour 9 minutes before

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Hazardous weather outlook, Jun 17, 4:35 PM CDT, 49 minutes before

TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
435 PM CDT WED JUN 17 2009

OKZ001>003-TXZ001>020-181100-
ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH-
DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE-
OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER-
435 PM CDT WED JUN 17 2009

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

.DAY ONE...

...A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 11 PM CDT THIS
EVENING FOR THE EASTERN OKLAHOMA PANHANDLE AND ALL OF THE TEXAS
PANHANDLE EXCEPT THE NORTHWEST SECTION...

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING
ACROSS THE OKLAHOMA AND TEXAS PANHANDLES AS A MINOR UPPER LEVEL LOW
PRESSURE SYSTEM MOVES ACROSS THE SOUTHERN HIGH PLAINS. SOME OF THE
STORMS THAT FORM WILL HAVE THE POTENTIAL TO BECOME SEVERE...WITH
LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS.

.DAYS TWO THROUGH SEVEN...

THUNDERSTORMS WILL BE POSSIBLE LATE FRIDAY AFTERNOON ACROSS THE
SOUTHERN TEXAS PANHANDLE. THUNDERSTORM CHANCES WILL SPREAD ACROSS
ALL OF THE OKLAHOMA AND TEXAS PANHANDLES FRIDAY NIGHT AND SATURDAY.
ANY STORMS THAT FORM ARE EXPECTED TO REMAIN JUST BELOW SEVERE LEVELS
AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

ANDRADE

In the hours before

Local storm report, Jun 17, 4:46 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
446 PM CDT WED JUN 17 2009

..TIME..    ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE..    ....MAG....     ..COUNTY LOCATION.. ST.. ...SOURCE....
            ..REMARKS..

0413 PM     TSTM WND GST     6 SW AMARILLO           35.14N 101.89W
06/17/2009  M64 MPH          RANDALL            TX   BROADCAST MEDIA

            64 MPH WINDS AT WESTEROVER PARK JUNIOR HIGH

&&

EVENT NUMBER AMA01602

JC

Local storm report, Jun 17, 4:50 PM CDT, 34 minutes before

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Local storm report, Jun 17, 4:54 PM CDT, 30 minutes before

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Local storm report, Jun 17, 5:07 PM CDT, 17 minutes before

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Local storm report, Jun 17, 5:10 PM CDT, 14 minutes before

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Local storm report, Jun 17, 5:13 PM CDT, 11 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 17, 3:33 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Moore, Oldham, Potter, Randall	57 min
Jun 17, 4:10 PM CDT	Severe Thunderstorm Warning	AMA	Hansford, Hutchinson, Ochiltree	65 min
Jun 17, 4:23 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Hartley, Hutchinson, Moore, Oldham, Potter	52 min
Jun 17, 4:30 PM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
Jun 17, 4:41 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Donley, Gray	64 min
Jun 17, 5:02 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	43 min
Jun 17, 5:10 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray, Hansford, Hutchinson, Moore, Ochiltree and 1 more	65 min
Jun 17, 6:09 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	46 min
Jun 17, 6:41 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	32 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.