Alert archive / Texas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 36, NWS Fort Worth, TX

March 27, 2018Comanche County, Texas

NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 27, 2018, 8:58 PM CDT for Comanche County, Texas. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 27, 2018, 8:58 PM CDT (01:58 UTC)
Expired: Mar 27, 2018, 9:45 PM CDT
In force: 47 min
Issued by: NWS Fort Worth, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 65.0 mph

County Comanche County, TX

The radar

The Dyess AFB radar (KDYX), 93 km from the middle of the area, began a volume at 01:58 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 00:00Z, 2.0 hours before the alert went out and 344 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: 202 J/kg
Mixed-layer CIN: -140 J/kg
Mixed-layer LCL: 1037 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 211 m²/s²
0-3 km storm-relative helicity: 239 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Fort Worth, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 27, 3:47 PM CDT, 5 hours 11 minutes earlier.

Area forecast discussion, Mar 27, 3:47 PM CDT, 5 hours 11 minutes before

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Hazardous weather outlook, Mar 27, 3:48 PM CDT, 5 hours 10 minutes before

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<body>
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    <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.
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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 9:34 PM CDT	Special Weather Statement	FWD	Erath	26 min
Mar 27, 10:09 PM CDT	Special Weather Statement	FWD	Somervell	36 min
Mar 27, 10:18 PM CDT	Severe Thunderstorm Warning	FWD	Somervell	27 min
Mar 27, 10:29 PM CDT	Severe Thunderstorm Warning	FWD	Hood, Johnson	61 min
Mar 27, 11:06 PM CDT	Special Weather Statement	FWD	Tarrant	39 min
Mar 28, 7:07 AM CDT	Special Weather Statement	FWD	Freestone, Limestone, Navarro, Robertson	38 min
Mar 28, 9:59 AM CDT	River Flood Warning	FWD	Henderson, Navarro	5 days
Mar 28, 11:45 AM CDT	Areal Flood Advisory	FWD	Milam, Robertson	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2018 Every severe thunderstorm 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.