Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 64, NWS Amarillo, TX

March 28, 2007Ochiltree County, Roberts County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Mar 28, 2007, 11:42 PM CDT for Ochiltree County, Roberts County, Texas. It was in force for 63 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: Mar 28, 2007, 11:42 PM CDT (04:42 UTC)
Expired: Mar 29, 2007, 12:45 AM CDT
In force: 63 min
Issued by: NWS Amarillo, TX
Area: Counties, with a storm outline in the text

Counties Ochiltree County, TX, Roberts County, TX

The radar

The Amarillo radar (KAMA), 126 km from the middle of the area, began a volume at 04:44 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.

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
Mar 28, 11:22 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 4.7 hours before the alert went out and 126 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: 1596 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1565 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 126 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.7

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KAMA 290442
SVRAMA
TXC357-393-290545-
/O.NEW.KAMA.SV.W.0064.070329T0442Z-070329T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AMARILLO TX
1142 PM CDT WED MAR 28 2007

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  OCHILTREE COUNTY IN THE PANHANDLE OF TEXAS
  NORTHWESTERN ROBERTS COUNTY IN THE PANHANDLE OF TEXAS

* UNTIL 1245 AM CDT

* AT 1140 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...
  AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED
  11 MILES WEST OF WOLF CREEK PARK...OR ABOUT 15 MILES SOUTH OF
  PERRYTON...MOVING NORTH AT 40 MPH.

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

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 3569 10106 3648 10107 3649 10108 3649 10055
      3607 10054

$$

JOHNSON

1 follow-up statement

000 
WWUS54 KAMA 290524
SVSAMA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1224 AM CDT THU MAR 29 2007

TXC357-393-290545-
/O.CON.KAMA.SV.W.0064.000000T0000Z-070329T0545Z/
OCHILTREE TX-ROBERTS TX-
1224 AM CDT THU MAR 29 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM CDT
FOR ROBERTS AND EASTERN OCHILTREE COUNTIES...

AT 1222 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF
DOLLAR SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM WOLF CREEK PARK TO 9 
MILES SOUTH OF MIAMI...MOVING NORTHEAST AT 45 MPH.

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

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 3569 10106 3605 10097 3641 10071 3649 10055
      3566 10057

$$

JORDAN

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 Mar 28, 11:37 PM CDT, 5 minutes earlier.

Area forecast discussion, Mar 28, 11:37 PM CDT, 5 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
1137 PM CDT WED MAR 28 2007

.UPDATE...
HAVE UPDATED POPS TO REFLECT CURRENT SITUATION AND REMOVE OLD WATCH
THAT WAS REPLACTED BY TOR WATCH 87. PACIFIC FRONT IS PUSHING EAST
ACROSS THE AREA RESULTING IN A TRANSITION TO SQUALL LINE WITH
DAMAGING WINDS THE MAIN THREAT. POSSIBLE BOW ECHO IS DEVELOPING ALONG
INTERSTATE 40 WHICH WILL POSE HAZARD FOR RECOVERY EFFORTS IN AREAS
AFFECTED BY TORNADOES THIS EVENING.

JORDAN

&&

.PREV DISCUSSION... /ISSUED 156 PM CDT WED MAR 28 2007/

DISCUSSION...
DRYLINE IS BEGINNING TO MIX EAST AS SEEN ON KFDX RADAR IMAGERY AND
SURFACE OBS. THIS WILL CONTINUE TO BE THE CASE THIS AFTERNOON. 28/12Z
GUIDANCE DEPICTS THE DRYLINE SHARPENING OVER THE WESTERN/CENTRAL
PORTIONS OF THE TX/OK PANHANDLES LATE THIS AFTERNOON...WITH
CONVECTIVE INITIATION BEGINNING AS EARLY AS 20/21Z. THERE WILL BE
ADEQUATE INSTABILITY/SHEAR TO SUPPORT DISCRETE SUPERCELLS AS
INSOLATION ALLOWS THE CAP TO BREAK. LARGE SCALE LIFT WILL BE AIDED BY
THE APPROACHING UPPER-LEVEL TROF AND INCREASING DIFFLUENT PATTERN
ALOFT. EXPECT A WATCH TO BE ISSUED FOR PART/ALL OF THE AREA IN THE
NEXT ONE TO TWO HOURS.  SEE THE HWO AND/OR SPS FOR DETAILS ON THE
SEVERE THREAT THIS EVENING. EXPECT STORMS TO EVOLVE INTO LINEAR MCS
OVERNIGHT...ADDING THE THREAT OF HEAVY RAINFALL TO THE EQUATIONS AS
STORMS TRAIN OVER THE SAME AREAS. RAINFALL AMOUNTS OF 1-2 INCHES ARE
POSSIBLE EAST OF THE DRYLINE...WITH ISOLATED AMOUNTS OF 2-4 INCHES
POSSIBLE THROUGH TONIGHT.

WEAK PACIFIC FRONT IS EXPECTED TO OVERTAKE THE DRYLINE LATE IN THE
FIRST PERIOD WHICH WILL HELP SCOUR OUT THE MOISTURE FOR MOST OF THE
AREA. HOWEVER...UPPER-LOW WILL REMAIN CENTERED OVER COLORADO THROUGH
FRIDAY. WITH LIFT ENHANCED BY WEAK IMPULSES ROTATING AROUND THIS
LOW...THERE SHOULD BE ENOUGH MOISTURE ACROSS THE EASTERN PANHANDLES
TO WARRANT THE MENTION OF SLIGHT CHANCE POPS THU AND FRI. AT THIS
TIME...IT APPEARS THAT MOISTURE WILL BE TOO LIMITED ACROSS THE
CENTRAL AND WESTERN ZONES. I DID LOWER MAX TEMPS A CATEGORY OR SO ON
FRIDAY BUT WE SHOULD STILL SEE MAX TEMPS WITHIN A FEW DEGREES OF
CLIMO.

AS UPPER-LOW DEPARTS TO THE EAST ON SATURDAY...QUASI-ZONAL MID/UPPER-
LEVEL FLOW WILL RESULT IN LEE-SIDE TROFFING. THIS WILL BRING A RETURN
TO SOUTH/SOUTHWEST FLOW AND WILL PUSH TEMPS BACK INTO THE MID AND
UPPER 70S BY SUNDAY. FLOW ALOFT WILL QUICKLY BECOME MORE
SOUTHWESTERLY BY MONDAY AS NORTHERN STREAM TROF DIGS INTO THE INTER-
MOUNTAIN WEST. H85 TEMPS ARE PROGGED TO CLIMB TO AROUND 20C ACROSS
THE AREA ON MONDAY...WHICH WILL SUPPORT TEMPS NEAR 80 DEGREES. GFS
DEPICTS A STRONGER COLD FRONT MOVING THROUGH THE PANHANDLES ON
TUESDAY. WILL UNDERCUT THE MEX GUIDANCE BEHIND THIS FRONT AS IT KEEPS
TEMPS ABOVE CLIMO DESPITE PROGGING H85 TEMPS IN THE SINGLE DIGITS.
WILL NOT ADD PRECIP MENTION FOR THE FORECAST FOR TUESDAY BUT WILL
HAVE TO MONITOR THIS POSSIBILITY OVER THE NEXT FEW MODEL RUNS.

JOHNSON

&&

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

&&

Hazardous weather outlook, Mar 28, 3:33 PM CDT, 8 hours 9 minutes before

TEXAS/OKLAHOMA PANHANDLES HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE AMARILLO TX
333 PM CDT WED MAR 28 2007

OKZ001>003-TXZ001>020-291100-
ARMSTRONG-BEAVER-CARSON-CIMARRON-COLLINGSWORTH-DALLAM-DEAF SMITH-
DONLEY-GRAY-HANSFORD-HARTLEY-HEMPHILL-HUTCHINSON-LIPSCOMB-MOORE-
OCHILTREE-OLDHAM-POTTER-RANDALL-ROBERTS-SHERMAN-TEXAS-WHEELER-
333 PM CDT WED MAR 28 2007

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

.DAY ONE...

...A TORNADO WATCH IS IN EFFECT FOR ALL OF THE OKLAHOMA AND TEXAS
PANHANDLES UNTIL MIDNIGHT CDT...

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON
AND TONIGHT CROSS THE CENTRAL AND EASTERN SECTIONS OF THE OKLAHOMA
AND TEXAS PANHANDLES...MAINLY ALONG AND EAST OF A LINE EXTENDING FROM
GUYMON OKLAHOMA TO AMARILLO TEXAS TO CANYON TEXAS. THERE IS ALSO A
SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT
ACROSS THE WESTERN THIRD OF THE OKLAHOMA AND TEXAS PANHANDLES. THE
MAIN THREATS WILL BE LARGE HAIL...DAMAGING WINDS...AND TORNADOES. ANY
TORNADOES THAT FORM WILL HAVE THE POTENTIAL TO BE STRONG AND
DAMAGING...ESPECIALLY ACROSS THE MODERATE RISK AREA. IN ADDITION...
HEAVY RAINFALL WILL LIKELY OCCUR WITH THE THUNDERSTORMS
...WHICH MAY LEAD TO LOCALIZED FLOODING OR FLASH FLOODING.

WINDY CONDITIONS ARE ALSO EXPECTED ACROSS THE PANHANDLES AS THE
PRESSURE GRADIENT TIGHTENS. THUS...CAUTION IS ADVISED ON AREA LAKES
TODAY AND TONIGHT.

ELEVATED FIRE WEATHER CONDITIONS WILL BE IN PLACE THIS AFTERNOON
ACROSS THE WESTERN PANHANDLES AS THE DRYLINE MOVES EAST OF THAT
REGION AND RELATIVE HUMIDITIES DROP TO BELOW 25 PERCENT.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED 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
LIKELY ACTIVATION LATER THIS AFTERNOON AND EVENING.

ANDRADE

In the hours before

Special weather statement, Mar 28, 11:09 PM CDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
1109 PM CDT WED MAR 28 2007

TXZ013-018-290515-
ARMSTRONG TX-CARSON TX-
1109 PM CDT WED MAR 28 2007

...LINE OF STRONG THUNDERSTORMS IN ARMSTRONG AND SOUTHERN CARSON
COUNTIES...

AT 1109 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF STRONG THUNDERSTORMS FROM 14 MILES NORTHEAST OF WASHBURN TO 5
MILES EAST OF WAYSIDE MOVING NORTHEAST AT 35 MPH.

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

JJB

Local storm report, Mar 28, 11:20 PM CDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1120 PM CDT WED MAR 28 2007

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

0950 PM     TSTM WND DMG     11 SW CANADIAN          35.80N 100.52W
03/28/2007                   HEMPHILL           TX   NWS STORM SURVEY

            ARRINGTON OIL RIG NEAR THE ROBERTS -HEMPHILL COUNTY
            LINE ON U.S. HIGHWAY 60. TWO PEOPLE WHO WORK FOR THE
            PLANT AND LIVE IN TRAILER HOMES WERE INJURED - TWO
            TRAILER HOMES DESTROYED - ONE MINOR INJURY - ONE SERIOUS
            INJURY

&&

KJS

Local storm report, Mar 28, 11:22 PM CDT, 20 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1122 PM CDT WED MAR 28 2007

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

0940 PM     HAIL             2 NW CANYON             35.00N 101.95W
03/28/2007  E0.88 INCH       RANDALL            TX   NWS EMPLOYEE

&&

KJS

Local storm report, Mar 28, 11:28 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1128 PM CDT WED MAR 28 2007

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

1120 PM     HAIL             CLAUDE                  35.11N 101.36W
03/28/2007  E0.75 INCH       ARMSTRONG          TX   PUBLIC

&&

CK

Local storm report, Mar 28, 11:33 PM CDT, 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1133 PM CDT WED MAR 28 2007

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

1124 PM     TSTM WND DMG     3 S DARROUZETT          36.40N 100.32W
03/28/2007                   LIPSCOMB           TX   LAW ENFORCEMENT

            WINDS TORE PART OF THE ROOF OF A HOUSE - HOUSE SHOOK -
            LASTED A FEW SECONDS

&&

KJS

Local storm report, Mar 28, 11:35 PM CDT, 7 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AMARILLO TX
1135 PM CDT WED MAR 28 2007

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

1118 PM     HAIL             CLAUDE                  35.11N 101.36W
03/28/2007  E1.00 INCH       ARMSTRONG          TX   PUBLIC

&&

CK

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 28, 7:06 PM CDT	Tornado Warning	AMA	Hansford, Hutchinson	39 min
Mar 28, 7:13 PM CDT	Severe Thunderstorm Warning	AMA	Gray	62 min
Mar 28, 7:21 PM CDT	Tornado Warning	AMA	Lipscomb	39 min
Mar 28, 7:24 PM CDT	Tornado Warning	AMA	Donley	51 min
Mar 28, 7:29 PM CDT	Severe Thunderstorm Warning	AMA	Moore, Sherman	61 min
Mar 28, 7:43 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	62 min
Mar 28, 7:50 PM CDT	Tornado Warning Emergency	AMA	Gray	40 min
Mar 28, 7:58 PM CDT	Severe Thunderstorm Warning	AMA	Carson	62 min
Mar 28, 8:16 PM CDT	Tornado Warning	AMA	Donley	29 min
Mar 28, 8:22 PM CDT	Tornado Warning	AMA	Wheeler	38 min
Mar 28, 8:25 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	65 min
Mar 28, 8:27 PM CDT	Tornado Warning	AMA	Gray	48 min
Mar 28, 8:32 PM CDT	Severe Thunderstorm Warning	AMA	Hemphill, Roberts	58 min
Mar 28, 8:44 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson	61 min
Mar 28, 8:59 PM CDT	Tornado Warning	AMA	Wheeler	46 min
Mar 28, 9:04 PM CDT	Severe Thunderstorm Warning	AMA	Carson	56 min
Mar 28, 9:10 PM CDT	Tornado Warning	AMA	Gray	29 min
Mar 28, 9:17 PM CDT	Tornado Warning	AMA	Hemphill	43 min
Mar 28, 9:27 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	63 min
Mar 28, 9:27 PM CDT	Severe Thunderstorm Warning	AMA	Roberts	63 min
Mar 28, 9:28 PM CDT	Severe Thunderstorm Warning	AMA	Hansford	62 min
Mar 28, 9:29 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	61 min
Mar 28, 9:32 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	58 min
Mar 28, 9:40 PM CDT	Severe Thunderstorm Warning	AMA	Gray	65 min
Mar 28, 9:46 PM CDT	Tornado Warning	AMA	Roberts	44 min
Mar 28, 9:53 PM CDT	Severe Thunderstorm Warning	AMA	Hutchinson	67 min
Mar 28, 10:04 PM CDT	Tornado Warning	AMA	Hemphill	41 min
Mar 28, 10:13 PM CDT	Severe Thunderstorm Warning	AMA	Carson	62 min
Mar 28, 10:22 PM CDT	Severe Thunderstorm Warning	AMA	Roberts	53 min
Mar 28, 10:26 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	64 min
Mar 28, 10:34 PM CDT	Severe Thunderstorm Warning	AMA	Potter, Randall	56 min
Mar 28, 11:18 PM CDT	Severe Thunderstorm Warning	AMA	Armstrong	57 min
Mar 28, 11:38 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Gray	67 min
Mar 28, 11:45 PM CDT	Severe Thunderstorm Warning	AMA	Lipscomb	60 min
Mar 29, 12:20 AM CDT	Severe Thunderstorm Warning	AMA	Donley	55 min
Mar 29, 12:29 AM CDT	Flash Flood Warning	AMA	Donley, Gray	2 hr
Mar 29, 1:23 AM CDT	Flash Flood Warning	AMA	Lipscomb	2 hr
Mar 29, 2:24 AM CDT	Severe Thunderstorm Warning	AMA	Collingsworth	32 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.