Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 435, NWS Little Rock, AR

May 22, 20115 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 22, 2011, 4:58 AM CDT for 5 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: May 22, 2011, 4:58 AM CDT (09:58 UTC)
Expired: May 22, 2011, 5:45 AM CDT
In force: 47 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Clark County, AR, Garland County, AR, Hot Spring County, AR, Montgomery County, AR, Pike County, AR

The radar

The Little Rock radar (KLZK), 112 km from the middle of the area, began a volume at 09:59 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

Shreveport, LA (KSHV), launched 00:00Z, 10.0 hours before the alert went out and 210 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: 2383 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 1022 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 168 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 3.7
Supercell composite: 31.0

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 May 22, 3:14 AM CDT, 1 hour 44 minutes earlier.

Area forecast discussion, May 22, 3:14 AM CDT, 1 hour 44 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, May 21, 4:25 PM CDT, 12 hours 33 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</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.
      </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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 21, 7:31 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Ouachita	29 min
May 21, 7:51 PM CDT	Special Weather Statement	LZK	Pike	44 min
May 21, 7:55 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Dallas, Ouachita	50 min
May 21, 8:22 PM CDT	Special Weather Statement	LZK	Garland, Hot Spring	48 min
May 21, 8:25 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Ouachita	50 min
May 21, 8:38 PM CDT	Severe Thunderstorm Warning	LZK	Calhoun, Dallas, Ouachita	39 min
May 21, 9:22 PM CDT	Special Weather Statement	LZK	Clark, Dallas, Hot Spring	28 min
May 21, 9:40 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Hot Spring	35 min
May 21, 10:15 PM CDT	Severe Thunderstorm Warning	LZK	Dallas, Grant, Hot Spring, Saline	21 min
May 22, 2:40 AM CDT	Lake Wind Advisory	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more	13 hr
May 22, 5:45 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring	45 min
May 22, 6:15 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Saline	33 min
May 22, 6:18 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Montgomery	42 min
May 22, 6:26 AM CDT	Special Weather Statement	LZK	Cleveland	44 min
May 22, 6:36 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Jefferson, Lincoln	39 min
May 22, 6:49 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Grant, Jefferson, Lonoke	41 min
May 22, 6:52 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Perry, Pulaski, Saline	38 min
May 22, 6:55 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Saline	50 min
May 22, 7:09 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Montgomery	51 min
May 22, 7:11 AM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Monroe	31 min
May 22, 7:15 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Jefferson, Lincoln	45 min
May 22, 7:26 AM CDT	Special Weather Statement	LZK	Monroe	44 min
May 22, 7:32 AM CDT	Special Weather Statement	LZK	Pulaski	43 min
May 22, 7:38 AM CDT	Severe Thunderstorm Warning	LZK	Hot Spring, Pulaski, Saline	37 min
May 22, 7:48 AM CDT	Special Weather Statement	LZK	Cleburne	47 min
May 22, 8:09 AM CDT	Special Weather Statement	LZK	Cleveland, Lincoln	46 min
May 22, 8:21 AM CDT	Special Weather Statement	LZK	Garland, Montgomery	44 min
May 22, 8:27 AM CDT	Special Weather Statement	LZK	Faulkner	43 min
May 22, 8:34 AM CDT	Severe Thunderstorm Warning	LZK	Faulkner, White	17 min
May 22, 8:43 AM CDT	Special Weather Statement	LZK	Arkansas, Lincoln	47 min
May 22, 9:29 AM CDT	Severe Thunderstorm Warning	LZK	Garland, Hot Spring, Saline	46 min
May 22, 9:54 AM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Hot Spring	27 min
May 22, 10:17 AM CDT	Severe Thunderstorm Warning	LZK	Pulaski, Saline	33 min
May 22, 10:36 AM CDT	Severe Thunderstorm Warning	LZK	Woodruff	39 min
May 22, 10:45 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Pulaski, Saline	45 min
May 22, 11:23 AM CDT	Flash Flood Warning	LZK	Pulaski, Saline	3 hr
May 22, 11:33 AM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski	42 min
May 22, 12:43 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Lonoke, Pulaski, Saline	47 min
May 22, 12:49 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Monroe, Prairie	41 min
May 22, 3:02 PM CDT	Special Weather Statement	LZK	Searcy	43 min
May 22, 3:30 PM CDT	Special Weather Statement	LZK	Jackson	45 min
May 22, 3:38 PM CDT	Special Weather Statement	LZK	Searcy, Stone, Van Buren	47 min
May 22, 3:55 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Izard, Stone, Van Buren	50 min
May 22, 4:14 PM CDT	Special Weather Statement	LZK	Jackson	46 min
May 22, 4:22 PM CDT	Special Weather Statement	LZK	Cleburne	28 min
May 22, 4:45 PM CDT	Special Weather Statement	LZK	Independence	45 min
May 22, 4:47 PM CDT	Special Weather Statement	LZK	Jackson	43 min
May 22, 4:54 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, Sharp, Stone	21 min
May 22, 5:08 PM CDT	Flash Flood Warning	LZK	Baxter, Newton, Pope, Searcy, Stone, Van Buren	3 hr
May 22, 5:08 PM CDT	Special Weather Statement	LZK	Izard	47 min
May 22, 5:08 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson	22 min
May 22, 5:15 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Izard, Stone	45 min
May 22, 6:00 PM CDT	Severe Thunderstorm Warning	LZK	Izard, Sharp	45 min
May 22, 6:05 PM CDT	Flash Flood Warning	LZK	Baxter, Izard, Stone	3 hr
May 22, 6:43 PM CDT	Severe Thunderstorm Warning	LZK	Izard, Sharp	32 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2011 Every severe thunderstorm warning in 2011

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.