Alert archive / Arkansas / Excessive Heat Warnings in 2016

Excessive Heat Warning 2, NWS Little Rock, AR

July 22, 201619 counties in Arkansas

NWS Little Rock, AR issued this excessive heat warning at Jul 22, 2016, 11:02 AM CDT for 19 counties in Arkansas. It was in force for 9 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: Jul 22, 2016, 11:02 AM CDT (16:02 UTC)
Expired: Jul 22, 2016, 8:00 PM CDT
In force: 9 hr
Issued by: NWS Little Rock, AR

Counties Arkansas County, AR, Bradley County, AR, Cleburne County, AR, Cleveland County, AR, Desha County, AR, Drew County, AR, Faulkner County, AR, Grant County, AR, Independence County, AR, Jackson County, AR, Jefferson County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR, White County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 47 km from the middle of the area, began a volume at 16:01 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

Little Rock, AR (KBYH), launched 12:00Z, 4.0 hours before the alert went out and 172 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: 2376 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1163 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 53 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this excessive heat 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 excessive heat warning went out at Jul 22, 6:11 AM CDT, 4 hours 51 minutes earlier.

Area forecast discussion, Jul 22, 6:11 AM CDT, 4 hours 51 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, Jul 22, 3:47 AM CDT, 7 hours 15 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
Jul 22, 5:01 PM CDT	Special Weather Statement	LZK	Pulaski	29 min
Jul 22, 5:21 PM CDT	Special Weather Statement	LZK	Independence	24 min
Jul 22, 5:22 PM CDT	Special Weather Statement	LZK	Saline	23 min
Jul 22, 5:52 PM CDT	Severe Thunderstorm Warning	LZK	Perry, Pulaski, Saline	23 min
Jul 22, 6:01 PM CDT	Special Weather Statement	LZK	Garland	29 min
Jul 22, 6:04 PM CDT	Severe Thunderstorm Warning	LZK	Garland, Saline	26 min
Jul 22, 6:16 PM CDT	Special Weather Statement	LZK	Clark	29 min
Jul 22, 6:41 PM CDT	Special Weather Statement	LZK	Izard	34 min
Jul 22, 6:44 PM CDT	Severe Thunderstorm Warning	LZK	Independence	46 min
Jul 22, 6:58 PM CDT	Severe Thunderstorm Warning	LZK	Izard	32 min

Nearby

Excessive Heat Warnings in Arkansas, 2016 Every excessive heat warning in 2016

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.