Alert archive / Texas / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 76, NWS Amarillo, TX

May 31, 2005Potter County, Randall County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at May 31, 2005, 2:56 PM CDT for Potter County, Randall County, Texas. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 31, 2005, 2:56 PM CDT (19:56 UTC)
Expired: May 31, 2005, 4:00 PM CDT
In force: 64 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

Counties Potter County, TX, Randall County, TX

The radar

The Amarillo radar (KAMA), 21 km from the middle of the area, began a volume at 19:58 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

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 31, 1:40 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 7.9 hours before the alert went out and 22 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: 91 J/kg
Mixed-layer CIN: -246 J/kg
Mixed-layer LCL: 1118 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS54 KAMA 311956
SVRAMA
TXC375-381-312100-
/O.NEW.KAMA.SV.W.0076.050531T1956Z-050531T2100Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
256 PM CDT TUE MAY 31 2005

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN POTTER COUNTY IN THE PANHANDLE OF TEXAS
  THIS INCLUDES THE CITY OF AMARILLO
  NORTHERN RANDALL COUNTY IN THE PANHANDLE OF TEXAS

* UNTIL 400 PM CDT

* AT 253 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND        
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED IN     
  EAST OF AMARILLO...AND MOVING EAST AT 15 MPH.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE 
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY 
AWAY FROM WINDOWS

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

TO REPORT SEVERE WEATHER...PLEASE CALL THE NATIONAL WEATHER SERVICE
AT 8 0 6 3 3 5 1 1 2 1.

LAT...LON 3538 10212 3505 10214 3504 10166 3537 10165

$$

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 31, 12:41 PM CDT, 2 hours 15 minutes earlier.

Area forecast discussion, May 31, 12:41 PM CDT, 2 hours 15 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
1241 PM CDT TUE MAY 31 2005

.UPDATE...
LOW CEILINGS HAVE CONTINUE ACROSS MOST OF THE AREA INTO THIS
AFTERNOON. SHOWERS AND THUNDERSTORMS CONTINUE ACROSS THE NORTHEAST
POTIONS OF THE PANHANDLES. TEMPERATURES REMAIN IN THE 60S ACROSS MOS
AREAS EARLY THIS AFTERNOON. HAVE DECIDED TO LOWER HIGHS A CATAGORY OR
TWO ACROSS ALL OF THE AREA DUE TO CONTINUED CLOUD COVER WHICH IS
HAMPERING THE WARM UP.

&&

.PREV DISCUSSION... /ISSUED 459 AM CDT TUE MAY 31 2005/

DISCUSSION...
ONCE AGAIN SVR WX EVENT YESTERDAY AFTN THRU EARLY THIS MORNING HERE
IN PNHDLS WAS ANOTHER NON EVENT...A BIG DUD. NEW MEXICO WAS THE
PLACE TO BE. NO REPORTS OF SVR WX RECEIVED...WITH LOCALLY HEAVY RAIN
THE MAIN STORY. CURRENT COMPLEX OF STORMS PUSHING THRU ERN ZNS WITH
NEW DEVELOPMENT OVER NERN NM AND ACROSS OK PNHDL. HAVE GONE WITH SCT
POPS VIA AREAL QUALIFIERS FOR TODAY TO COVER CURRENT ACTIVITY...
THEN FOLLOWED BY A BRIEF LULL...WHICH...GIVEN SUFFICIENT DAYTIME
HEATING AND THE APCH OF ANOTHER UPPER LVL SHORTWAVE TROF...SHOULD
RESULT IN A NEW CROP OF TSTMS LATER THIS AFTN AND EVENING. ANY SFC
BOUNDARIES FROM EARLIER CONVECTION MAY ALSO SERVE AS A FOCUSING
MECHANISM FOR NEW STORMS. DITTO FOR TNGT...THAT IS...SCT POPS VIA
AREAL QUALIFIERS AS SHORTWAVE TROF MOVES ESE ACROSS FCST AREA. TIMING
WISE...ALL SHORT RANGE MODELS SUGGEST MAIN AXIS OF THIS SHORTWAVE
TROF WILL BE JUST E OF FCST AREA BY 06Z WED. IF THIS COMES TO PASS...
MOST OF THE PRECIP THAT FORMS MAY OCCUR BEFORE 06Z. WILL NOT SPLIT
HAIRS ON IT FOR THIS PCKG. LATER SHIFTS CAN ADJUST POPS IF NECESSARY.
AS FOR SVR POTENTIAL...HAVE OMITTED FROM ZONES THIS PCKG BUT
ACKNOWLEDGE PSBLTY GIVEN APCHG SHORTWAVE TROF. THE BIG QUESTION IS
EXTENT OF DAYTIME HEATING AND INSTABILITY...WHICH WERE IN QUESTION
YESTERDAY AS WELL. LATER SHIFTS CAN INSERT IF NECESSARY INGREDIENTS
PHASE TOGETHER LATER THIS AFTN AND EVENING. DO NOT WANT TO SHOTGUN
SVR IN ALL ZNS DUE TO ABV UNCERTAINTIES.

FROM LATE WED AND BEYOND...THE UA PATTERN UNDERGOES A TRANSITION TO A
WRN TROF AND ERN US RIDGE. ALL SHORT RANGE AND MEDIUM RANGE MODELS
ARE IN BASIC AGREEMENT WITH THIS PATTERN CHANGE...BUT THEY DIFFER
IN THE USUAL DETAILS REGARDING STRENGTH OF WRN US TROF AND TIMING OF
ANY INDIVIDUAL SHORTWAVE TROFS EMBEDDED IN THE LONGWAVE TROF.
PNHDLS WILL BE IN SW OR WSW FLOW ALOFT MORE TYPICAL OF EARLY JUNE
FROM THU THRU AT LEAST NEXT TUE. THIS WILL TRANSLATE TO WARMER TEMPS
AND THE RETURN OF THE SFC DRYLINE WHICH WILL MORE THAN LIKELY BE
SLOSHING BACK AND FORTH ON ANY GIVEN DAY. WILL CONTINUE WITH SLGT
CHC POPS FROM WED THRU FRI NIGHT FOR MAINLY AFTN AND NIGHTTIME
TSTMS AT THIS TIME AS A COUPLE MID LVL SHORTWAVE TROFS ROTATE INTO
SRN HI PLAINS. WILL NOT GO ANY HIGHER THAN SLGT CHC DUE TO PROGGED
MID LVL CAPPING INVERSION ESTABLISHING ITSELF STARTING THU.

FOR SAT THRU NEXT TUE NEAR OR SLIGHTLY ABV NORMAL TEMPS EXPECTED AS
OVERALL UA PATTERN DOES NOT CHANGE. SINCE THERE IS A LARGE AMOUNT
OF UNCERTAINTY REGARDING MOISTURE PARAMETERS...TIMING OF ANY
INDIVIDUAL MINOR SHORTWAVE TROFS EJECTING OUT OF WRN US LONGWAVE
TROF...POSITION OF SFC DRYLINE...AND STRENGTH OF MID LVL CAPPING
INVERSION...WILL CONTINUE TO RIDE WITH A DRY PCKG FROM SAT THRU
NEXT TUE AND ONLY HAVE 10 POPS. TYPICALLY...CAP STRENGTH IS THE
BIGGEST UNKNOWN THIS FAR OUT AND MORE OFTEN THAN NOT COMPUTER
MODELS UNDERPLAY THE STRENGTH OF THIS PARAMETER. THEREFORE...AM NOT
IN FAVOR OF SPREADING 20 POPS EVERYWHERE ALL 7 DAYS. LATER
SHIFTS CAN INSERT POPS IN APPROPRIATE ZONES SHOULD THE SITUATION
WARRANT AS TIME GETS CLOSER. IN GENERAL...RETAINED INTEGRITY OF
PREVIOUS PCKG.

&&

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

&&

09/04

Hazardous weather outlook, May 31, 1:00 PM CDT, 1 hour 56 minutes before

TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE AMARILLO TX
100 PM CDT TUE MAY 31 2005

OKZ001>003-TXZ001>020-011100-
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 TUE MAY 31 2005

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

.DAY ONE...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
AND TONIGHT ACROSS THE SOUTHWEST HALF OF THE TEXAS PANHANDLE...
GENERALLY SOUTH OF A DALHART TO WELLINGTON LINE. LARGE HAIL AND
DAMAGING WINDS WILL BE THE PRIMARY THREATS. THUNDERSTORMS ARE
EXPECTED TO STAY JUST BELOW SEVERE LEVELS ACROSS THE REMAINDER
OF THE TEXAS AND OKLAHOMA PANHANDLES.

.DAYS TWO THROUGH SEVEN...

THERE IS A SLIGHT CHANCE OF THUNDERSTORMS WEDNESDAY THROUGH FRIDAY...
MAINLY DURING THE LATE AFTERNOON AND NIGHTTIME HOURS.  THESE STORMS
ARE EXPECTED TO BE ISOLATED...BUT A FEW OF THESE STORMS MAY APPROACH
SEVERE LEVELS...WITH THE PRIMARY THREAT BEING LARGE HAIL AND DAMAGING
WINDS. THE BEST CHANCE FOR SEVERE STORMS APPEAR TO BE THURSDAY
AFTERNOON AND EVENING...MAINLY ACROSS THE EASTERN HALF OF THE
PANHANDLES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER GROUPS AND EMERGENCY MANAGEMENT OFFICIALS ARE ENCOURAGED TO
STAY ALERT AND PREPARE FOR POSSIBLE ACTIVATION THIS AFTERNOON AND
TONIGHT...ESPECIALLY ACROSS THE SOUTHERN TEXAS PANHANDLE.

DRILLETTE

In the hours before

Special weather statement, May 31, 2:34 PM CDT, 22 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
234 PM CDT TUE MAY 31 2005

TXZ007-312000-
MOORE TX-
234 PM CDT TUE MAY 31 2005

...STRONG THUNDERSTORM IN MOORE COUNTY...

A STRONG THUNDERSTORM WAS LOCATED 7 MILES NORTHWEST OF FOUR WAY AT
234 PM CDT...MOVING EAST AT 20 MPH.

STORM INTENSITY IS INCREASING AND SEVERE WEATHER MAY DEVELOP RAPIDLY.
SEEK SHELTER UNTIL THE STORM PASSES.

Local storm report, May 31, 2:42 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
242 PM CDT TUE MAY 31 2005

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

0240 PM     HAIL             4 NE AMARILLO           35.24N 101.77W
05/31/2005  1.00 INCH        POTTER             TX   MEDIA

&&

SP

Local storm report, May 31, 2:44 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
244 PM CDT TUE MAY 31 2005

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

0245 PM     HAIL             UMBARGER                34.95N 102.11W
05/31/2005  1.00 INCH        RANDALL            TX   MEDIA

            KVII

&&

SP

Local storm report, May 31, 2:48 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
248 PM CDT TUE MAY 31 2005

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

0248 PM     HAIL             7 N HEREFORD            34.92N 102.40W
05/31/2005  1.00 INCH        DEAF SMITH         TX   EMERGENCY MNGR

&&

SP

Local storm report, May 31, 2:51 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
251 PM CDT TUE MAY 31 2005

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

0251 PM     HAIL             AMARILLO                35.20N 101.82W
05/31/2005  1.75 INCH        POTTER             TX   MEDIA

            JOHN CHANNEL 10 REPORT AT EASTERN AND 3RD

&&

SLI

Local storm report, May 31, 2:53 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
253 PM CDT TUE MAY 31 2005

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

0253 PM     HAIL             7 N HEREFORD            34.92N 102.40W
05/31/2005  2.00 INCH        DEAF SMITH         TX   EMERGENCY MNGR

&&

JMG

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 10:04 PM CDT	Severe Thunderstorm Warning	AMA	Oldham	41 min
May 31, 2:06 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	54 min
May 31, 2:51 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	54 min
May 31, 3:00 PM CDT	Tornado Warning	AMA	Randall	45 min
May 31, 3:03 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	57 min
May 31, 3:14 PM CDT	Tornado Warning	AMA	Deaf Smith	46 min
May 31, 3:53 PM CDT	Severe Thunderstorm Warning	AMA	Randall	67 min
May 31, 3:56 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	64 min
May 31, 4:06 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	54 min
May 31, 4:37 PM CDT	Severe Thunderstorm Warning	AMA	Potter	53 min
May 31, 5:00 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	45 min
May 31, 5:53 PM CDT	Severe Thunderstorm Warning	AMA	Carson	38 min

Nearby

Severe Thunderstorm Warnings in Texas, 2005 Every severe thunderstorm warning in 2005

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.