Alert archive / Arkansas / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 326, NWS Memphis, TN

October 9, 2014Clay County, Greene County, Randolph County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Oct 9, 2014, 5:39 PM CDT for Clay County, Greene County, Randolph County, Arkansas. It was in force for 51 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: Oct 9, 2014, 5:39 PM CDT (22:39 UTC)
Expired: Oct 9, 2014, 6:30 PM CDT
In force: 51 min
Issued by: NWS Memphis, TN
Area: Storm-based polygon

Counties Clay County, AR, Greene County, AR, Randolph County, AR

The radar

The Memphis radar (KNQA), 126 km from the middle of the area, began a volume at 22:41 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

Springfield, MO (KSGF), launched 12:00Z, 10.7 hours before the alert went out and 288 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: 944 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 786 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 264 m²/s²
0-3 km storm-relative helicity: 261 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.3

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 Memphis, TN wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 8, 6:08 PM CDT, 23 hours 31 minutes earlier.

Area forecast discussion, Oct 8, 6:08 PM CDT, 23 hours 31 minutes before

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Hazardous weather outlook, Oct 8, 6:58 PM CDT, 22 hours 41 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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      <p id="message2">
        Please try again in a few minutes.
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The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 9, 5:12 PM CDT	Special Weather Statement	MEG	Randolph	33 min
Oct 9, 5:17 PM CDT	Severe Thunderstorm Warning	MEG	Clay, Randolph	43 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2014 Every severe thunderstorm warning in 2014

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.