Alert archive / Texas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 133, NWS Amarillo, TX

June 29, 2013Deaf Smith County, Oldham County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jun 29, 2013, 9:59 PM CDT for Deaf Smith County, Oldham 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: Jun 29, 2013, 9:59 PM CDT (02:59 UTC)
Expired: Jun 29, 2013, 10:45 PM CDT
In force: 46 min
Issued by: NWS Amarillo, TX
Area: Storm-based polygon

Counties Deaf Smith County, TX, Oldham County, TX

The radar

The Amarillo radar (KAMA), 81 km from the middle of the area, began a volume at 03:01 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 nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 3.0 hours before the alert went out and 82 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: 328 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 2735 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 4 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.9

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 Jun 29, 8:11 PM CDT, 1 hour 48 minutes earlier.

Area forecast discussion, Jun 29, 8:11 PM CDT, 1 hour 48 minutes before

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Hazardous weather outlook, Jun 29, 8:19 PM CDT, 1 hour 40 minutes before

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In the hours before

Special weather statement, Jun 29, 6:18 PM CDT, 3 hours 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
618 PM CDT SAT JUN 29 2013

TXZ016-292345-
DEAF SMITH TX-
618 PM CDT SAT JUN 29 2013

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN DEAF SMITH COUNTY UNTIL
645 PM CDT...

AT 616 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A
STRONG THUNDERSTORM 9 MILES SOUTH OF VEGA...MOVING SOUTH AT 15 MPH.

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

* LOCATIONS IMPACTED INCLUDE...
  SIMMS...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 3483 10229 3494 10278 3518 10250 3518 10231
TIME...MOT...LOC 2318Z 022DEG 14KT 3511 10246

JOHNSON

Local storm report, Jun 29, 7:11 PM CDT, 2 hours 48 minutes before

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Local storm report, Jun 29, 7:35 PM CDT, 2 hours 24 minutes before

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Special weather statement, Jun 29, 8:31 PM CDT, 1 hour 28 minutes before

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Special weather statement, Jun 29, 8:36 PM CDT, 1 hour 23 minutes before

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Local storm report, Jun 29, 9:57 PM CDT, 2 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
Jun 29, 7:07 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith	53 min
Jun 29, 8:31 PM CDT	Special Weather Statement	AMA	Dallam	59 min
Jun 29, 8:36 PM CDT	Special Weather Statement	AMA	Oldham	39 min
Jun 29, 8:58 PM CDT	Severe Thunderstorm Warning	AMA	Deaf Smith, Hartley, Oldham	62 min
Jun 29, 10:05 PM CDT	Special Weather Statement	AMA	Hartley	25 min
Jun 29, 10:14 PM CDT	Special Weather Statement	AMA	Potter, Randall	31 min
Jun 29, 10:26 PM CDT	Special Weather Statement	AMA	Hartley, Oldham	34 min
Jun 29, 10:45 PM CDT	Special Weather Statement	AMA	Moore	30 min
Jun 29, 10:54 PM CDT	Special Weather Statement	AMA	Armstrong, Carson, Potter, Randall	51 min

Nearby

Severe Thunderstorm Warnings in Texas, 2013 Every severe thunderstorm warning in 2013

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.