Alert archive / Texas / Special Weather Statements in 2021

Special Weather Statement, NWS Amarillo, TX

March 12, 2021Randall County, Texas

NWS Amarillo, TX issued this special weather statement at Mar 12, 2021, 4:07 PM CST for Randall County, Texas. It was in force for 38 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 12, 2021, 4:07 PM CST (22:07 UTC)
Expired
Mar 12, 2021, 4:45 PM CST
In force
38 min
Issued by
NWS Amarillo, TX

County Randall County, TX

The radar

The Amarillo radar (KAMA), 42 km from the middle of the area, began a volume at 22:09 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, 10.1 hours before the alert went out and 42 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-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 2021-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 66 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 2021-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 345 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
66 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
619 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
345 m²/s²
0-3 km storm-relative helicity
390 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 Mar 12, 2:58 PM CST, 1 hour 9 minutes earlier.

Area forecast discussion, Mar 12, 2:58 PM CST, 1 hour 9 minutes before
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Hazardous weather outlook, Mar 12, 3:28 PM CST, 39 minutes before
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In the hours before

Special weather statement, Mar 12, 10:49 AM CST, 5 hours 18 minutes before
Special Weather Statement
National Weather Service Amarillo TX
1049 AM CST Fri Mar 12 2021

TXZ012-013-017-018-317-121745-
Potter TX-Palo Duro Canyon TX-Randall TX-Carson TX-Armstrong TX-
1049 AM CST Fri Mar 12 2021

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ARMSTRONG...
RANDALL...SOUTHERN CARSON AND SOUTHEASTERN POTTER COUNTIES UNTIL 1145
AM CST...

At 1047 AM CST, Doppler radar was tracking line of showers extending
from 9 miles west of Panhandle to 6 miles northwest of Happy.
Movement was east at 10 mph. This line has a history of producing
brief strong wind gusts out of nowhere.

Wind gusts of 50 to 55 mph will be possible with these showers.

Locations impacted include...
Amarillo, Canyon, Panhandle, White Deer, Lake Tanglewood, Mescalero
Park, Washburn, Palo Duro Canyon, Timbercreek Canyon and Pantex.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Take shelter in a sturdy building if threatening weather approaches.

&&

LAT...LON 3475 10217 3482 10217 3541 10173 3551 10111
      3475 10170
TIME...MOT...LOC 1647Z 256DEG 9KT 3533 10154 3479 10196

TLH
Special weather statement, Mar 12, 3:58 PM CST, 9 minutes before
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Special weather statement, Mar 12, 4:07 PM CST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 9:07 AM CSTSpecial Weather StatementAMARandall38 min
Mar 12, 9:44 AM CSTSpecial Weather StatementAMARandall61 min
Mar 12, 10:49 AM CSTSpecial Weather StatementAMACarson, Randall56 min
Mar 12, 3:58 PM CSTSpecial Weather StatementAMAWheeler47 min
Mar 12, 5:56 PM CSTSpecial Weather StatementAMAOldham34 min

Nearby

Special Weather Statements in Texas, 2021Every special weather statement in 2021

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.