Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 70, NWS Amarillo, TX

May 9, 2015Wheeler County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 9, 2015, 6:27 PM CDT for Wheeler County, Texas. It was in force for 46 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 9, 2015, 6:27 PM CDT (23:27 UTC)
Expired: May 9, 2015, 7:13 PM CDT
In force: 46 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

County Wheeler County, TX

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.5 hours before the alert went out and 261 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: 320 J/kg
Mixed-layer CIN: -247 J/kg
Mixed-layer LCL: 540 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 149 m²/s²
0-3 km storm-relative helicity: 208 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 9, 4:29 PM CDT, 1 hour 58 minutes earlier.

Area forecast discussion, May 9, 4:29 PM CDT, 1 hour 58 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AMARILLO TX
429 PM CDT SAT MAY 9 2015

.DISCUSSION...
VIGOROUS UPPER LEVEL LOW PRESSURE SYSTEM IS PROGGED BY ALL MODELS TO
CONTINUE ITS NEWD TRACK TO NEAR OR JUST NW OF GOODLAND KS BY 12Z SUN.
HAVE INSERTED SLGT CHC POPS FOR THE CENTRAL AND ERN OK PNHDL AS WELL
AS PARTS OF ERN TX PNHDL FOR THIS EVENING. OTHERWISE...DRY WEATHER
WILL PREVAIL ACROSS THE FCST AREA THROUGH TUESDAY. A COLD FRONT WILL
TRACK ACROSS THE SRN HIGH PLAINS SUNDAY.

CHANCES FOR SHOWERS AND TSTMS RETURN TO THE TX AND OK PNHDLS TUE
NIGHT THROUGH FRIDAY NIGHT AS THE BROAD SW US TROF PERSISTS AND
EMBEDDED SHORTWAVE TROFS IMPINGE ON AVAILABLE MOISTURE ACROSS THE
REGION.

ANDRADE

&&

.PRELIMINARY POINT TEMPS/POPS...
AMARILLO TX                45  72  41  69  45 /   5   5  10   5   5
BEAVER OK                  47  69  40  67  42 /  20   5  10   5   0
BOISE CITY OK              41  65  37  66  42 /  10   5  20   5   5
BORGER TX                  48  74  44  69  48 /   5   5  10   5   5
BOYS RANCH TX              43  72  40  70  44 /   5   5  10   5   5
CANYON TX                  45  72  41  69  45 /   5   5  10   5   5
CLARENDON TX               48  76  45  71  47 /  10   5  10   5   5
DALHART TX                 41  68  39  68  42 /   5  10  20   5   5
GUYMON OK                  45  67  40  67  44 /  10   5  10   5   0
HEREFORD TX                44  72  40  70  45 /   5   5  10   5   5
LIPSCOMB TX                49  72  42  68  43 /  20   5  10   5   0
PAMPA TX                   47  72  42  68  45 /  10   5  10   5   5
SHAMROCK TX                50  77  46  70  47 /  20   5  10   5   5
WELLINGTON TX              52  79  48  72  49 /  10   5  10   5   5

&&

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

&&

Hazardous weather outlook, May 9, 4:17 PM CDT, 2 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
417 PM CDT SAT MAY 9 2015

OKZ001>003-TXZ001>020-101100-
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
417 PM CDT SAT MAY 9 2015

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

.DAY ONE...THROUGH TONIGHT.

ISOLATED THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON OR EVENING
ACROSS THE CENTRAL AND EASTERN OKLAHOMA PANHANDLE AS WELL AS THE
EASTERN TEXAS PANHANDLE. A FEW STORMS THAT DEVELOP MAY BECOME
SEVERE WITH LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES
POSSIBLE. IN ADDITION...LOCALIZED FLOODING OR FLASH FLOODING MAY
OCCUR WITH THE STRONGEST STORMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THUNDERSTORMS WILL BE POSSIBLE ACROSS NORTHWEST SECTIONS OF THE
OKLAHOMA AND TEXAS PANHANDLES SUNDAY NIGHT. ANY STORMS THAT FORM ARE
EXPECTED TO REMAIN BELOW SEVERE LEVELS AT THIS TIME.

ADDITIONAL THUNDERSTORMS MAY DEVELOP ACROSS THE OKLAHOMA AND TEXAS
PANHANDLES TUESDAY NIGHT THROUGH FRIDAY. SOME STORMS THAT DEVELOP MAY
BECOME STRONG TO MARGINALLY SEVERE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS ACROSS THE CENTRAL
AND EASTERN OKLAHOMA PANHANDLE AS WELL AS THE EASTERN TEXAS PANHANDLE
SHOULD REMAIN ALERT AND BE READY FOR POSSIBLE ACTIVATION LATE THIS
AFTERNOON OR EVENING.

ANDRADE

In the hours before

Local storm report, May 9, 1:23 PM CDT, 5 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
123 PM CDT SAT MAY 09 2015

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

0445 AM     HAIL             DAWN                    34.91N 102.20W
05/09/2015  E1.75 INCH       DEAF SMITH         TX   PUBLIC

            TIME ESTIMATED BETWEEN 445AM AND 500AM

0500 AM     HAIL             10 S VEGA               35.11N 102.40W
05/09/2015  E1.50 INCH       DEAF SMITH         TX   PUBLIC

            RADAR ESTIMATED TIME AROUND 500AM

0525 AM     HAIL             2 E BUSHLAND            35.19N 102.04W
05/09/2015  M2.50 INCH       POTTER             TX   TRAINED SPOTTER

0540 AM     HAIL             6 WNW AMARILLO          35.24N 101.92W
05/09/2015  M1.75 INCH       POTTER             TX   EMERGENCY MNGR

            GOLF BALL SIZE IN TASCOSA HILLS ALONG WITH POWER BEING
            OUT.

0540 AM     HAIL             8 NW AMARILLO           35.28N 101.92W
05/09/2015  E1.00 INCH       POTTER             TX   TRAINED SPOTTER

            NICKLE TO QUARTER SIZE HAIL AT BISHOP HILLS

0635 AM     HAIL             10 SW CLAUDE            35.00N 101.47W
05/09/2015  E1.00 INCH       ARMSTRONG          TX   PUBLIC

            RADAR ESTIMATED TIME AT 635AM

&&

EVENT NUMBER AMA1500426 AMA1500428 AMA1500423 AMA1500424 AMA1500425
AMA1500427

BEAT

Special weather statement, May 9, 5:58 PM CDT, 29 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
558 PM CDT SAT MAY 9 2015

TXZ014-015-019-020-092345-
COLLINGSWORTH TX-DONLEY TX-GRAY TX-WHEELER TX-
558 PM CDT SAT MAY 9 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN COLLINGSWORTH...
WHEELER...SOUTHEASTERN GRAY AND NORTHEASTERN DONLEY COUNTIES UNTIL
645 PM CDT...

AT 556 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 5 MILES EAST OF MCLEAN...OR 15 MILES WEST OF
SHAMROCK...MOVING EAST AT 50 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  SHAMROCK...           WHEELER...            TWITTY...
  LELA...               KELLERVILLE...        BRISCOE...
  MCLEAN...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS... AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3512 10060 3529 10063 3562 10036 3543 10000
      3522 10000
TIME...MOT...LOC 2258Z 256DEG 43KT 3523 10049

CE

Special weather statement, May 9, 6:11 PM CDT, 16 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
611 PM CDT SAT MAY 9 2015

TXZ004-005-100000-
LIPSCOMB TX-OCHILTREE TX-
611 PM CDT SAT MAY 9 2015

...SIGNIFICANT WEATHER ADVISORY FOR OCHILTREE AND WESTERN LIPSCOMB
COUNTIES UNTIL 700 PM CDT...

AT 609 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 9 MILES SOUTHEAST OF FARNSWORTH...OR 12 MILES
SOUTH OF PERRYTON...MOVING NORTHEAST AT 60 MPH.

HAIL UP TO ONE HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  PERRYTON...           WOLF CREEK PARK...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS... AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 3650 10074 3632 10044 3608 10085 3618 10101
TIME...MOT...LOC 2310Z 216DEG 51KT 3623 10085

CE

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 3:38 AM CDT	Special Weather Statement	AMA	Deaf Smith, Oldham	67 min
May 9, 4:23 AM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Oldham, Potter, Randall	67 min
May 9, 4:55 AM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Hartley, Oldham	33 min
May 9, 5:24 AM CDT	Severe Thunderstorm Warning	AMA	Moore, Potter, Randall	66 min
May 9, 6:04 AM CDT	Special Weather Statement	AMA	Armstrong, Randall	56 min
May 9, 6:20 AM CDT	Areal Flood Advisory	AMA	Potter, Randall	3 hr
May 9, 6:28 AM CDT	Severe Thunderstorm Warning	AMA	Armstrong, Carson, Gray	62 min
May 9, 6:32 AM CDT	Special Weather Statement	AMA	Donley	58 min
May 9, 6:36 AM CDT	Special Weather Statement	AMA	Carson, Gray	54 min
May 9, 7:15 AM CDT	Areal Flood Advisory	AMA	Armstrong, Carson	3 hr
May 9, 9:13 AM CDT	Areal Flood Advisory	AMA	Donley	3 hr
May 9, 5:58 PM CDT	Special Weather Statement	AMA	Wheeler	47 min
May 9, 6:11 PM CDT	Special Weather Statement	AMA	Ochiltree	49 min
May 9, 6:37 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb, Ochiltree	83 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning in 2015

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.