Alert archive / Texas / Freeze Warnings in 2017

Freeze Warning 1, NWS Lubbock, TX

April 29, 201710 counties in Texas

NWS Lubbock, TX issued this freeze warning at Apr 29, 2017, 2:52 PM CDT for 10 counties in Texas. It took effect at Apr 29, 2017, 8:00 PM CDT. It was in force for 12 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
Apr 29, 2017, 2:52 PM CDT (19:52 UTC)
In effect from
Apr 29, 2017, 8:00 PM CDT
Expired
Apr 30, 2017, 7:55 AM CDT
In force
12 hr
Issued by
NWS Lubbock, TX

Counties Bailey County, TX, Briscoe County, TX, Castro County, TX, Cochran County, TX, Hale County, TX, Hockley County, TX, Lamb County, TX, Parmer County, TX, Swisher County, TX, Yoakum County, TX

The radar

The Lubbock radar (KLBB), 65 km from the middle of the area, began a volume at 19:52 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

Midland Regional, TX (KMAF), launched 12:00Z, 7.9 hours before the alert went out and 236 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, Midland Regional, TX at 12:00Z on 2017-04-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Midland Regional, TX at 12:00Z on 2017-04-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -55 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1510 m above ground
0-6 km bulk shear
70 kt
0-1 km storm-relative helicity
-55 m²/s²
0-3 km storm-relative helicity
57 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 Lubbock, TX wrote its last area forecast discussion before this freeze warning went out at Apr 29, 12:31 PM CDT, 2 hours 21 minutes earlier.

Area forecast discussion, Apr 29, 12:31 PM CDT, 2 hours 21 minutes before
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Hazardous weather outlook, Apr 29, 11:05 AM CDT, 3 hours 47 minutes before
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In the hours before

Local storm report, Apr 29, 9:08 AM CDT, 5 hours 44 minutes before
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Local storm report, Apr 29, 10:24 AM CDT, 4 hours 28 minutes before
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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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Local storm report, Apr 29, 10:27 AM CDT, 4 hours 25 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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      <p id="message2">
        Please try again in a few minutes.
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Local storm report, Apr 29, 10:29 AM CDT, 4 hours 23 minutes before
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <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.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 29, 1:04 AM CDTSevere Thunderstorm WarningLUBChildress, Cottle41 min
Apr 29, 1:15 AM CDTSevere Thunderstorm WarningLUBHale, Swisher45 min
Apr 29, 1:39 AM CDTSevere Thunderstorm WarningLUBHale21 min
Apr 29, 2:08 AM CDTSevere Thunderstorm WarningLUBCrosby, Garza, Lubbock, Lynn37 min
Apr 29, 2:40 AM CDTSevere Thunderstorm WarningLUBCrosby, Floyd35 min
Apr 29, 5:25 AM CDTFreeze WatchLUBBailey, Briscoe, Castro, Cochran, Floyd, Hale and 7 more9 hr

Nearby

Freeze Warnings in Texas, 2017Every freeze warning 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.