Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 152, NWS Amarillo, TX

May 23, 2007Hansford County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 23, 2007, 9:55 PM CDT for Hansford County, Texas. It was in force for 65 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: May 23, 2007, 9:55 PM CDT (02:55 UTC)
Expired: May 23, 2007, 11:00 PM CDT
In force: 65 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

County Hansford County, TX

The radar

The Amarillo radar (KAMA), 121 km from the middle of the area, began a volume at 02:55 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
May 23, 3:31 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 2.9 hours before the alert went out and 121 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: 1239 J/kg
Mixed-layer CIN: -37 J/kg
Mixed-layer LCL: 1675 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 11.4

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 May 23, 6:37 PM CDT, 3 hours 18 minutes earlier.

Area forecast discussion, May 23, 6:37 PM CDT, 3 hours 18 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
637 PM CDT WED MAY 23 2007

.AVIATION...
SEVERAL BOUNDARIES WILL PROVIDE THE FOCUS FOR THUNDERSTORMS THIS
EVENING AND INTO TONIGHT. THUNDERSTORM COVERAGE WILL INCREASE...AND
WILL LIKELY CREATE PROBLEMS FOR APPROACHING AND DEPARTING
FLIGHTS...ESPECIALLY AT KAMA. COLD FRONT WILL PUSH THROUGH LATE
TONIGHT AND WILL PUSH THE MOISTURE EAST...ENDING THE POTENTIAL FOR
SHOWERS AND THUNDERSTORMS FROM WEST TO EAST ACROSS THE PANHANDLES.

NUNEZ

&&

.PREV DISCUSSION... /ISSUED 235 PM CDT WED MAY 23 2007/

DISCUSSION...
MAIN WEATHER FOCUS WILL BE TONIGHT AS RETREATING FRONTAL BOUNDARY
WILL ALLOW MOIST AND UNSTABLE AIR TO SPREAD OVER A LARGE PORTION OF
THE FORECAST AREA LATE THIS AFTERNOON AND TONIGHT. SFC LOW IS
DEVELOPING OVER EAST CENTRAL NEW MEXICO IN RESPONSE TO HEIGHT FALLS
ASSOCIATED WITH APPROACHING SHORTWAVE TROF OVER FOUR CORNERS REGION.
THIS SYSTEM WILL SERVE TO BACK THE WINDS ACROSS THE PANHANDLES...
PRODUCING STRONG LOW LEVEL SHEAR...ENHANCED FURTHER IN THE FRONTAL
ZONE. GIVEN INSTABILITY...STRONG LIFT ENHANCED BY MIDLEVEL JET MAX AT
OR ABOVE 50 KT...AND AMPLE MOISTURE...SEVERE STORMS CAPABLE OF VERY
LARGE HAIL...DAMAGING WIND AND TORNADOES WILL BE POSSIBLE OVER MUCH
OF THE PANHANDLES. THE TORNADO THREAT MAY BE ENHANCED TONIGHT BY THE
PRESENCE OF THE LOWLEVEL JET. STRONGER SURGE OF COLD AIR EXPECTED TO
PENETRATE TONIGHT...AND CURRENT THOUGHTS ARE THAT A MORE LINEAR STORM
SYSTEM WILL ENSUE AS THIS BOUNDARY OVERTAKES THE MOIST AIRMASS...AS
SOMEWHAT OF A SECOND ROUND OF STORMS TONIGHT. WITH THIS IN MIND...HAVE
INCREASED POPS AREAWIDE TONIGHT.

LINGERING POPS IN THE EAST SEEMED REASONABLE TOMORROW MORNING AS
STORMS EXIT THE AREA. FRONT IS LIKELY TO BE ON THE FASTER SIDE...AS
SOUTHWARD MOVEMENT WILL BE ENHANCED BY THE STORMS FORMING ALONG THE
BOUNDARY. THIS FRONT WILL VACATE THE AREA OF DEEP MOISTURE...BUT SOME
PRECIPITATION WILL STILL BE POSSIBLE DURING MUCH OF THE REMAINING
FORECAST PERIODS AS MINOR DISTURBANCES MOVE THROUGH AND MOISTURE
ATTEMPTS TO MAKE A COMEBACK. IN GENERAL...HAVE RETAINED POPS FROM
PREVIOUS FORECAST...WHICH WERE GENERALLY IN LINE WITH CURRENT MEXMOS
NUMBERS.

CONCERNING TEMPERATURES...LOWERED A FEW DEGREES TOMORROW FROM MEXMOS
HIGHS AS CLOUDS AND UPSLOPE FLOW WILL LIKELY LIMIT INSOLATION.
OTHERWISE...MEXMOS NUMBERS SEEMED GENERALLY REASONABLE.

KRAMAR

&&

.AMA WATCHES/WARNINGS/ADVISORIES...
TX...NONE.
OK...NONE.

&&

24/08

Hazardous weather outlook, May 23, 5:31 PM CDT, 4 hours 24 minutes before

TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
531 PM CDT WED MAY 23 2007

OKZ001>003-TXZ001>020-241100-
ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH-
DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE-
OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER-
531 PM CDT WED MAY 23 2007

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

.DAY ONE...

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS EXTENDED TORNADO WATCH
NUMBER 293 TO INCLUDE THE ENTIRE OKLAHOMA AND TEXAS PANHANDLES
THROUGH 11 PM CDT.

SEVERE THUNDERSTORMS ARE LIKELY THROUGH TONIGHT. TORNADOES...
LARGE HAIL AND DAMAGING WINDS ARE ALL POSSIBLE. THE GREATEST
THREAT OF TORNADOES APPEARS TO BE ACROSS THE NORTHERN...CENTRAL AND
EASTERN TEXAS PANHANDLE AND THE OKLAHOMA PANHANDLE GENERALLY
EAST OF U.S. HIGHWAY 287 AND NORTH OF INTERSTATE 40. OTHER THREATS
INCLUDE HEAVY RAIN...CAUSING ISOLATED FLASH FLOODING...AND CLOUD
TO GROUND LIGHTNING.

.DAYS TWO THROUGH SEVEN...

THERE WILL BE A SLIGHT CHANCE TO CHANCE OF THUNDERSTORMS ACROSS MOST
OF THE TEXAS AND OKLAHOMA PANHANDLES THURSDAY NIGHT THROUGH TUESDAY
NIGHT. STORMS ARE NOT EXPECTED TO BECOME SEVERE AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS WILL LIKELY
BE CALLED UPON FOR ACTIVATION THROUGH TONIGHT.

NUNEZ

In the hours before

Local storm report, May 23, 9:16 PM CDT, 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
916 PM CDT WED MAY 23 2007

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

0911 PM     HAIL             22 S PERRYTON           36.07N 100.80W
05/23/2007  E2.00 INCH       OCHILTREE          TX   AMATEUR RADIO

&&

RN

Local storm report, May 23, 9:17 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
917 PM CDT WED MAY 23 2007

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

0911 PM     HAIL             23 S PERRYTON           36.06N 100.80W
05/23/2007  E2.00 INCH       ROBERTS            TX   AMATEUR RADIO

&&

RN

Local storm report, May 23, 9:19 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
919 PM CDT WED MAY 23 2007

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

0915 PM     HAIL             20 S PERRYTON           36.10N 100.80W
05/23/2007  E2.75 INCH       OCHILTREE          TX   AMATEUR RADIO

            BASEBALL SIZE HAIL REPORTED ONE MILE SOUTH OF HIGHWAYS
            281 AND 70

&&

CK

Local storm report, May 23, 9:21 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
921 PM CDT WED MAY 23 2007

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

0919 PM     HAIL             23 S PERRYTON           36.06N 100.80W
05/23/2007  M2.75 INCH       ROBERTS            TX   STORM CHASER

&&

JC

Local storm report, May 23, 9:23 PM CDT, 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
923 PM CDT WED MAY 23 2007

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

0919 PM     HAIL             21 S PERRYTON           36.09N 100.80W
05/23/2007  M1.75 INCH       OCHILTREE          TX   AMATEUR RADIO

            FM281 JUST EAST OF HIGHWAY 70

&&

JC

Special weather statement, May 23, 9:54 PM CDT, 1 minute 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
May 23, 7:12 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	63 min
May 23, 7:20 PM CDT	Tornado Warning	AMA	Lipscomb	55 min
May 23, 7:25 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	65 min
May 23, 7:27 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson	63 min
May 23, 7:28 PM CDT	Tornado Warning	AMA	Hutchinson	62 min
May 23, 7:42 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	63 min
May 23, 8:17 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	58 min
May 23, 8:24 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree, Roberts	66 min
May 23, 8:30 PM CDT	Tornado Warning	AMA	Hutchinson, Roberts	60 min
May 23, 8:46 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	59 min
May 23, 9:23 PM CDT	Tornado Warning	AMA	Hansford	37 min
May 23, 9:28 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree, Roberts	62 min
May 23, 9:29 PM CDT	Tornado Warning	AMA	Roberts	61 min
May 23, 9:41 PM CDT	Tornado Warning	AMA	Ochiltree	49 min
May 23, 10:02 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	58 min
May 23, 10:14 PM CDT	Flash Flood Warning	AMA	Lipscomb, Ochiltree	4 hr
May 23, 10:32 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	58 min
May 23, 10:38 PM CDT	Tornado Warning	AMA	Lipscomb	52 min
May 23, 10:58 PM CDT	Flash Flood Warning	AMA	Roberts	3 hr
May 23, 11:00 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	60 min
May 23, 11:33 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	57 min
May 23, 11:42 PM CDT	Severe Thunderstorm Warning	AMA	Roberts	63 min
May 24, 12:00 AM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	45 min
May 24, 12:21 AM CDT	Severe Thunderstorm Warning	AMA	Hemphill	54 min
May 23, 8:15 PM CDT	Severe Thunderstorm Warning	AMA	Texas	60 min
May 23, 9:16 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	59 min
May 23, 9:27 PM CDT	Tornado Warning	AMA	Beaver	48 min
May 23, 11:26 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	49 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007 Every severe thunderstorm warning in 2007

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.