Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 137, NWS Amarillo, TX

May 23, 2007Beaver County, Oklahoma

NWS Amarillo, TX issued this severe thunderstorm warning at May 23, 2007, 5:44 PM CDT for Beaver County, Oklahoma. It was in force for 61 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, 5:44 PM CDT (22:44 UTC)
Expired: May 23, 2007, 6:45 PM CDT
In force: 61 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

County Beaver County, OK

The radar

The Dodge City radar (KDDC), 121 km from the middle of the area, began a volume at 22:44 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

Dodge City, (KDDC), launched 12:00Z, 10.7 hours before the alert went out and 124 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: 1 J/kg
Mixed-layer CIN: -440 J/kg
Mixed-layer LCL: 1149 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 50 m²/s²
0-3 km storm-relative helicity: 189 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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, 2:35 PM CDT, 3 hours 9 minutes earlier.

Area forecast discussion, May 23, 2:35 PM CDT, 3 hours 9 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
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

&&

.PRELIMINARY POINT TEMPS/POPS...
AMARILLO TX                49  69  52  77  58 /  60   5  20  30  30
BEAVER OK                  52  71  48  78  60 /  80   5  10  30  30
BOISE CITY OK              43  69  48  79  56 /  80   5  10  30  30
BORGER TX                  49  71  53  78  63 /  70   5  20  30  30
BOYS RANCH TX              49  72  52  79  58 /  60   5  20  30  30
CANYON TX                  49  69  53  79  56 /  50   5  20  30  30
CLARENDON TX               51  70  53  74  60 /  60  20  20  30  30
DALHART TX                 46  69  49  78  55 /  60   5  10  30  30
GUYMON OK                  49  72  49  80  60 /  80   5  10  30  30
HEREFORD TX                49  69  52  79  55 /  50   5  20  30  30
LIPSCOMB TX                51  71  48  77  61 /  80  20  20  30  30
PAMPA TX                   50  71  51  75  61 /  70  20  20  30  30
SHAMROCK TX                51  71  54  75  60 /  70  30  20  30  30
WELLINGTON TX              55  71  55  77  61 /  70  30  20  30  30

&&

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

&&

Hazardous weather outlook, May 23, 5:31 PM CDT, 13 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

Special weather statement, May 23, 4:59 PM CDT, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
459 PM CDT WED MAY 23 2007

TXZ008-013-232230-
CARSON TX-HUTCHINSON TX-
459 PM CDT WED MAY 23 2007

...STRONG THUNDERSTORM IN NORTHWESTERN CARSON AND SOUTHERN HUTCHINSON
COUNTIES...

AT 459 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 17 MILES SOUTH OF BORGER MOVING NORTHEAST AT 20
MPH.

STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY.

ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE.

JOHNSON

Local storm report, May 23, 5:14 PM CDT, 30 minutes before

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

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

0504 PM     HAIL             19 NW MIAMI             35.89N 100.88W
05/23/2007  E2.00 INCH       ROBERTS            TX   AMATEUR RADIO

&&

JC

Local storm report, May 23, 5:23 PM CDT, 21 minutes before

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

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

0518 PM     HAIL             23 NW MIAMI             35.93N 100.93W
05/23/2007  M1.75 INCH       ROBERTS            TX   TRAINED SPOTTER

            HALF DOLLAR TO GOLFBALL SIZE HAIL

&&

RN

Local storm report, May 23, 5:24 PM CDT, 20 minutes before

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

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

0505 PM     TSTM WND GST     26 S PERRYTON           36.02N 100.80W
05/23/2007  M60 MPH          ROBERTS            TX   NWS EMPLOYEE

            60 MPH WIND AT CANADIAN RIVER BRIDGE ON HWY70.

&&

RTW

Special weather statement, May 23, 5:25 PM CDT, 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
525 PM CDT WED MAY 23 2007

TXZ008-232300-
HUTCHINSON TX-
525 PM CDT WED MAY 23 2007

...STRONG THUNDERSTORM IN HUTCHINSON COUNTY...

AT 525 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 5 MILES SOUTHEAST OF STINNETT MOVING NORTHEAST AT
25 MPH.  ANOTHER STRONG STORM IS LOCATED IN RURAL NORTHEAST
HUTCHINSON COUNTY AND IS ALSO MOVING NORTHEAST AT 25 MPH.

STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY.

ONE HALF INCH SIZE HAIL AND WINDS AROUND 50 MPH ARE POSSIBLE.

JOHNSON

Local storm report, May 23, 5:44 PM CDT, 0 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
May 23, 3:50 PM CDT	Severe Thunderstorm Warning	AMA	Roberts	55 min
May 23, 4:07 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	53 min
May 23, 4:25 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	65 min
May 23, 4:31 PM CDT	Tornado Warning	AMA	Roberts	29 min
May 23, 4:36 PM CDT	Tornado Warning	AMA	Lipscomb	24 min
May 23, 4:50 PM CDT	Tornado Warning	AMA	Ochiltree	40 min
May 23, 5:00 PM CDT	Tornado Warning	AMA	Roberts	45 min
May 23, 5:28 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	62 min
May 23, 5:32 PM CDT	Tornado Warning	AMA	Ochiltree	43 min
May 23, 5:37 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson	53 min
May 23, 5:46 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	59 min
May 23, 5:54 PM CDT	Tornado Warning	AMA	Lipscomb	51 min
May 23, 6:03 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	57 min
May 23, 6:24 PM CDT	Severe Thunderstorm Warning	AMA	Ochiltree	66 min
May 23, 6:26 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson	64 min
May 23, 6:46 PM CDT	Tornado Warning	AMA	Hutchinson	44 min
May 23, 6:49 PM CDT	Tornado Warning	AMA	Ochiltree	41 min
May 23, 4:46 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	59 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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.