Alert archive / Texas / Special Weather Statements in 2016

Special Weather Statement, NWS Amarillo, TX

July 3, 2016Dallam County, Texas

NWS Amarillo, TX issued this special weather statement at Jul 3, 2016, 4:50 PM CDT for Dallam County, Texas. It was in force for 25 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: Jul 3, 2016, 4:50 PM CDT (21:50 UTC)
Expired: Jul 3, 2016, 5:15 PM CDT
In force: 25 min
Issued by: NWS Amarillo, TX

County Dallam County, TX

The radar

The Amarillo radar (KAMA), 166 km from the middle of the area, began a volume at 21:53 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, 9.8 hours before the alert went out and 167 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: 467 J/kg
Mixed-layer CIN: -186 J/kg
Mixed-layer LCL: 863 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: 84 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

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 Jul 3, 12:12 PM CDT, 4 hours 38 minutes earlier.

Area forecast discussion, Jul 3, 12:12 PM CDT, 4 hours 38 minutes before

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Hazardous weather outlook, Jul 3, 3:58 AM CDT, 12 hours 52 minutes before

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In the hours before

Special weather statement, Jul 3, 4:50 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE AMARILLO TX
450 PM CDT SUN JUL 3 2016

TXZ001-032215-
DALLAM TX-
450 PM CDT SUN JUL 3 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN DALLAM COUNTY UNTIL
515 PM CDT...

AT 450 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6
MILES NORTHEAST OF TEXLINE...OR 14 MILES EAST OF CLAYTON...MOVING
SOUTHEAST AT 30 MPH.

DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
TEXLINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE SHELTER IN A STURDY BUILDING IF THREATENING WEATHER APPROACHES.

&&

LAT...LON 3650 10304 3650 10286 3649 10250 3627 10267
      3616 10289 3636 10304
TIME...MOT...LOC 2150Z 312DEG 27KT 3643 10292

CE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 7:13 PM CDT	Special Weather Statement	AMA	Hansford	47 min
Jul 2, 9:12 PM CDT	Special Weather Statement	AMA	Lipscomb, Ochiltree	48 min
Jul 2, 7:21 PM CDT	Areal Flood Advisory	AMA	Beaver	4 hr
Jul 2, 7:33 PM CDT	Severe Thunderstorm Warning	AMA	Beaver	87 min
Jul 3, 5:54 PM CDT	Special Weather Statement	AMA	Cimarron	36 min
Jul 3, 6:18 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	27 min
Jul 3, 6:46 PM CDT	Severe Thunderstorm Warning	AMA	Cimarron	29 min

Nearby

Special Weather Statements in Texas, 2016 Every special weather statement in 2016

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.