Alert archive / Texas / Freeze Warnings in 2018

Freeze Warning 3, NWS Amarillo, TX

October 14, 2018Collingsworth County, Wheeler County, Texas

NWS Amarillo, TX issued this freeze warning at Oct 14, 2018, 3:41 AM CDT for Collingsworth County, Wheeler County, Texas. It took effect at Oct 14, 2018, 10:00 PM CDT. It was in force for 13 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 14, 2018, 3:41 AM CDT (08:41 UTC)
In effect from
Oct 14, 2018, 10:00 PM CDT
Expired
Oct 15, 2018, 10:45 AM CDT
In force
13 hr
Issued by
NWS Amarillo, TX

Counties Collingsworth County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 131 km from the middle of the area, began a volume at 08:41 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, 8.7 hours before the alert went out and 130 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 00:00Z on 2018-10-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 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 00:00Z on 2018-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 255 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
2 J/kg
Mixed-layer CIN
-233 J/kg
Mixed-layer LCL
841 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
255 m²/s²
0-3 km storm-relative helicity
225 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze 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 freeze warning went out at Oct 14, 3:40 AM CDT, 1 minute earlier.

Area forecast discussion, Oct 14, 3:40 AM CDT, 1 minute before
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Hazardous weather outlook, Oct 13, 3:17 PM CDT, 12 hours 24 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 14, 3:41 AM CDTHard Freeze WarningAMAArmstrong, Carson, Dallam, Deaf Smith, Donley, Gray and 12 more31 hr
Oct 14, 6:36 AM CDTWind AdvisoryAMADallam, Hansford, Hartley, Hutchinson, Lipscomb, Moore and 2 more5 hr

Nearby

Freeze Warnings in Texas, 2018Every freeze warning in 2018

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.