Alert archive / Mississippi / Heat Advisories in 2016

Heat Advisory 7, NWS Jackson, MS

July 24, 20167 counties in Mississippi; 4 parishes in Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this heat advisory at Jul 24, 2016, 3:50 AM CDT for 7 counties in Mississippi; 4 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued: Jul 24, 2016, 3:50 AM CDT (08:50 UTC)
Expired: Jul 24, 2016, 7:00 PM CDT
In force: 15 hr
Issued by: NWS Jackson, MS

Counties Ashley County, AR, Chicot County, AR, East Carroll Parish, LA, Morehouse Parish, LA, Richland Parish, LA, West Carroll Parish, LA, Bolivar County, MS, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Sharkey County, MS, Sunflower County, MS, Washington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 138 km from the middle of the area, began a volume at 08:50 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 00:00Z, 8.8 hours before the alert went out and 221 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: 104 J/kg
Mixed-layer CIN: -262 J/kg
Mixed-layer LCL: 1864 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -18 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Jackson, MS wrote its last area forecast discussion before this heat advisory went out at Jul 23, 4:01 PM CDT, 11 hours 49 minutes earlier.

Area forecast discussion, Jul 23, 4:01 PM CDT, 11 hours 49 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 23, 3:02 PM CDT, 12 hours 48 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 Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 24, 4:12 PM CDT	Special Weather Statement	JAN	Rankin	33 min
Jul 24, 4:47 PM CDT	Special Weather Statement	JAN	Lincoln	28 min
Jul 24, 6:49 PM CDT	Special Weather Statement	JAN	Choctaw	26 min
Jul 23, 7:14 PM CDT	Special Weather Statement	JAN	Morehouse	31 min
Jul 23, 8:18 PM CDT	Special Weather Statement	JAN	Richland	42 min
Jul 24, 12:52 PM CDT	Special Weather Statement	JAN	West Carroll	23 min
Jul 24, 1:26 PM CDT	Special Weather Statement	JAN	West Carroll	34 min
Jul 24, 1:53 PM CDT	Special Weather Statement	JAN	Morehouse	37 min
Jul 24, 2:43 PM CDT	Special Weather Statement	JAN	Morehouse	32 min

Nearby

Heat Advisories in Mississippi, 2016 Heat Advisories in Louisiana, 2016 Heat Advisories in Arkansas, 2016 Every heat advisory 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.