Alert archive / Arkansas / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 64, NWS Little Rock, AR

February 21, 20134 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Feb 21, 2013, 7:58 AM CST for 4 counties in Arkansas. 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: Feb 21, 2013, 7:58 AM CST (13:58 UTC)
Expired: Feb 21, 2013, 8:45 AM CST
In force: 47 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Arkansas County, AR, Cleveland County, AR, Jefferson County, AR, Lincoln County, AR

The radar

The Little Rock radar (KLZK), 92 km from the middle of the area, began a volume at 13:59 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

Jackson, MS (KJAN), launched 12:00Z, 2.0 hours before the alert went out and 255 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: 1433 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 328 m²/s²
0-3 km storm-relative helicity: 322 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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 20, 5:45 PM CST, 14 hours 13 minutes earlier.

Area forecast discussion, Feb 20, 5:45 PM CST, 14 hours 13 minutes before

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Hazardous weather outlook, Feb 20, 5:00 PM CST, 14 hours 58 minutes before

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</head>
<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.
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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 Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 21, 7:19 AM CST	Special Weather Statement	LZK	Cleveland	46 min
Feb 21, 7:51 AM CST	Special Weather Statement	LZK	Cleveland, Jefferson, Lincoln	44 min
Feb 21, 8:05 AM CST	Special Weather Statement	LZK	Logan, Yell	45 min
Feb 21, 8:23 AM CST	Special Weather Statement	LZK	Cleveland	47 min
Feb 21, 8:27 AM CST	Special Weather Statement	LZK	Garland, Montgomery	43 min
Feb 21, 8:33 AM CST	Special Weather Statement	LZK	Polk	47 min
Feb 21, 8:54 AM CST	Severe Thunderstorm Warning	LZK	Logan, Polk, Scott, Yell	51 min
Feb 21, 9:04 AM CST	Special Weather Statement	LZK	Pulaski, Saline	46 min
Feb 21, 9:08 AM CST	Severe Thunderstorm Warning	LZK	Faulkner, Lonoke, Pulaski, Saline	52 min
Feb 21, 9:11 AM CST	Special Weather Statement	LZK	Montgomery	44 min
Feb 21, 9:39 AM CST	Special Weather Statement	LZK	Hot Spring, Saline	46 min
Feb 21, 10:36 AM CST	Special Weather Statement	LZK	Lonoke, Pulaski	44 min
Feb 21, 10:38 AM CST	Special Weather Statement	LZK	Dallas	32 min
Feb 21, 11:13 AM CST	Special Weather Statement	LZK	Grant	32 min
Feb 21, 1:07 PM CST	River Flood Warning	LZK	Jackson, Woodruff	25 days
Feb 21, 4:17 PM CST	Special Weather Statement	LZK	Pulaski	28 min
Feb 21, 4:27 PM CST	Special Weather Statement	LZK	Faulkner	28 min
Feb 21, 4:55 PM CST	Special Weather Statement	LZK	White	20 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2013 Every severe thunderstorm warning in 2013

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.