Alert archive / Texas / Special Weather Statements in 2017

Special Weather Statement, NWS Amarillo, TX

August 3, 2017Oldham County, Texas

NWS Amarillo, TX issued this special weather statement at Aug 3, 2017, 6:40 PM CDT for Oldham County, Texas. It was in force for 35 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: Aug 3, 2017, 6:40 PM CDT (23:40 UTC)
Expired: Aug 3, 2017, 7:15 PM CDT
In force: 35 min
Issued by: NWS Amarillo, TX

County Oldham County, TX

The radar

The Amarillo radar (KAMA), 80 km from the middle of the area, began a volume at 23:40 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 12:00Z, 11.7 hours before the alert went out and 81 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: 39 J/kg
Mixed-layer CIN: -284 J/kg
Mixed-layer LCL: 1514 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -32 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 3, 5:45 PM CDT, 55 minutes earlier.

Area forecast discussion, Aug 3, 5:45 PM CDT, 55 minutes before

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Hazardous weather outlook, Aug 3, 3:14 PM CDT, 3 hours 26 minutes before

Hazardous Weather Outlook
National Weather Service Amarillo TX
314 PM CDT Thu Aug 3 2017

OKZ001>003-TXZ001>020-040815-
Cimarron-Texas-Beaver-Dallam-Sherman-Hansford-Ochiltree-Lipscomb-
Hartley-Moore-Hutchinson-Roberts-Hemphill-Oldham-Potter-Carson-
Gray-Wheeler-Deaf Smith-Randall-Armstrong-Donley-Collingsworth-
314 PM CDT Thu Aug 3 2017

This Hazardous Weather Outlook is for the Texas and Oklahoma
Panhandles.

.DAY ONE...This Afternoon and Tonight.

Thunderstorms are expected to develop this afternoon through
tonight across the Oklahoma and Texas Panhandles. Some storms
that form will have the potential to become strong to marginally
severe, with gusty winds and hail up to the size of quarters
the primary hazards. In addition, the strongest storms will be
capable of producing heavy rainfall, which may lead to localized
flooding or flash flooding.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Thunderstorms will be possible across the Oklahoma and Texas
Panhandles Friday through Wednesday. A few storms that develop
may become strong to marginally severe during this time period,
with gusty winds and hail up to the size of quarters being the
primary hazards. In addition, the strongest storms will be capable
of producing heavy rainfall, which may result in localized flooding
or flash flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

In the hours before

Special weather statement, Aug 3, 2:11 PM CDT, 4 hours 29 minutes before

Special Weather Statement
National Weather Service Amarillo TX
211 PM CDT THU AUG 3 2017

TXZ016-031945-
Deaf Smith TX-
211 PM CDT THU AUG 3 2017

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

At 211 PM CDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Simms, or 14 miles northwest of Hereford, moving
southeast at 15 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Hereford and Dawn.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3475 10248 3501 10264 3514 10240 3488 10217
      3475 10217
TIME...MOT...LOC 1911Z 322DEG 14KT 3501 10250

LFM

Special weather statement, Aug 3, 2:16 PM CDT, 4 hours 24 minutes before

Special Weather Statement
National Weather Service Amarillo TX
216 PM CDT THU AUG 3 2017

TXZ012-031945-
Potter TX-
216 PM CDT THU AUG 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN POTTER COUNTY UNTIL
245 PM CDT...

At 215 PM CDT, Doppler radar was tracking a strong thunderstorm 13
miles north of Amarillo, moving south at 15 mph.

Half inch hail and wind gusts up to 50 mph will be possible with this
storm.

Locations impacted include...
Amarillo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3519 10196 3547 10189 3546 10162 3518 10163
      3518 10185
TIME...MOT...LOC 1915Z 003DEG 14KT 3540 10179

LFM

Special weather statement, Aug 3, 3:04 PM CDT, 3 hours 36 minutes before

Special Weather Statement
National Weather Service Amarillo TX
304 PM CDT THU AUG 3 2017

TXZ011-016-032100-
Deaf Smith TX-Oldham TX-
304 PM CDT THU AUG 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN OLDHAM AND
NORTHEASTERN DEAF SMITH COUNTIES UNTIL 400 PM CDT...

At 304 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles south of Vega, moving south at 10 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Vega and Wildorado.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3489 10252 3513 10262 3534 10238 3518 10217
      3504 10217 3486 10227
TIME...MOT...LOC 2004Z 347DEG 8KT 3518 10243

LG

Special weather statement, Aug 3, 4:35 PM CDT, 2 hours 5 minutes before

Special Weather Statement
National Weather Service Amarillo TX
435 PM CDT THU AUG 3 2017

TXZ016-032200-
Deaf Smith TX-
435 PM CDT THU AUG 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN DEAF SMITH COUNTY
UNTIL 500 PM CDT...

At 435 PM CDT, Doppler radar was tracking a strong thunderstorm 7
miles west of Hereford, moving southeast at 15 mph.

Half inch hail and wind gusts of 50 to 55 mph will be possible with
this storm.

Locations impacted include...
Hereford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3475 10264 3486 10265 3496 10241 3475 10225
TIME...MOT...LOC 2135Z 331DEG 14KT 3486 10252

LG

Special weather statement, Aug 3, 5:35 PM CDT, 1 hour 5 minutes before

Special Weather Statement
National Weather Service Amarillo TX
535 PM CDT THU AUG 3 2017

TXZ011-032330-
Oldham TX-
535 PM CDT THU AUG 3 2017

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN OLDHAM COUNTY UNTIL 630
PM CDT...

At 534 PM CDT, Doppler radar was tracking a strong thunderstorm 9
miles north of Adrian, or 20 miles northwest of Vega, moving north at
10 mph.

Nickel size hail and wind gusts of 50 to 55 mph will be possible with
this storm.  Hail may accumulate on roadways causing hazardous
travel.

This storm will remain over mainly rural areas of western Oldham
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3562 10304 3563 10241 3529 10250 3526 10304
TIME...MOT...LOC 2234Z 195DEG 7KT 3541 10273

LG

Special weather statement, Aug 3, 6:40 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
Aug 3, 2:11 PM CDT	Special Weather Statement	AMA	Deaf Smith	34 min
Aug 3, 2:16 PM CDT	Special Weather Statement	AMA	Potter	29 min
Aug 3, 2:47 PM CDT	Severe Thunderstorm Warning	AMA	Carson, Potter	58 min
Aug 3, 3:04 PM CDT	Special Weather Statement	AMA	Deaf Smith	56 min
Aug 3, 4:35 PM CDT	Special Weather Statement	AMA	Deaf Smith	25 min
Aug 3, 5:35 PM CDT	Special Weather Statement	AMA	Oldham	55 min

Nearby

Special Weather Statements in Texas, 2017 Every special weather statement in 2017

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.