Alert archive / Texas / Hard Freeze Warnings in 2021

Hard Freeze Warning 1, NWS Houston/Galveston, TX

February 14, 202123 counties in Texas

NWS Houston/Galveston, TX issued this hard freeze warning at Feb 14, 2021, 5:55 AM CST for 23 counties in Texas. It took effect at Feb 14, 2021, 6:00 PM CST. It was in force for 42 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: Feb 14, 2021, 5:55 AM CST (11:55 UTC)
In effect from: Feb 14, 2021, 6:00 PM CST
Expired: Feb 16, 2021, 12:00 PM CST
In force: 42 hr
Issued by: NWS Houston/Galveston, TX

All 23 counties

Austin County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Colorado County, TX, Fort Bend County, TX, Galveston County, TX, Grimes County, TX, Harris County, TX, Houston County, TX, Jackson County, TX, Liberty County, TX, Madison County, TX, Matagorda County, TX, Montgomery County, TX, Polk County, TX, San Jacinto County, TX, Trinity County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX

The radar

The Houston radar (KHGX), 91 km from the middle of the area, began a volume at 11:56 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

Lake Charles Mun, LA (KLCH), launched 00:00Z, 11.9 hours before the alert went out and 242 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: 92 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 hard freeze warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Houston/Galveston, TX wrote its last area forecast discussion before this hard freeze warning went out at Feb 14, 4:53 AM CST, 1 hour 2 minutes earlier.

Area forecast discussion, Feb 14, 4:53 AM CST, 1 hour 2 minutes before

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In the hours before

Special weather statement, Feb 14, 1:05 AM CST, 4 hours 50 minutes before

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Special weather statement, Feb 14, 1:05 AM CST, 4 hours 50 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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Local storm report, Feb 14, 2:18 AM CST, 3 hours 37 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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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

Everything else NWS Houston/Galveston, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 14, 4:13 AM CST	Gale Warning	HGX		35 hr
Feb 14, 5:52 AM CST	Wind Chill Warning	HGX	Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 17 more	54 hr

Nearby

Hard Freeze Warnings in Texas, 2021 Every hard freeze warning 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.