Alert archive / Louisiana / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 215, NWS Jackson, MS

April 4, 20084 parishes in Louisiana

NWS Jackson, MS issued this severe thunderstorm warning at Apr 4, 2008, 6:17 PM CDT for 4 parishes in Louisiana. It was in force for 43 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: Apr 4, 2008, 6:17 PM CDT (23:17 UTC)
Expired: Apr 4, 2008, 7:00 PM CDT
In force: 43 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon

Counties Catahoula Parish, LA, Concordia Parish, LA, Franklin Parish, LA, Tensas Parish, LA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 4, 9:48 AM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 11.3 hours before the alert went out and 156 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: 0 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 311 m²/s²
0-3 km storm-relative helicity: 311 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.9

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 Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 4, 6:15 PM CDT, 2 minutes earlier.

Area forecast discussion, Apr 4, 6:15 PM CDT, 2 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, Apr 4, 4:15 PM CDT, 2 hours 2 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>

In the hours before

Local storm report, Apr 4, 4:17 PM CDT, 2 hours 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>

Local storm report, Apr 4, 4:19 PM CDT, 1 hour 58 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>

Local storm report, Apr 4, 4:38 PM CDT, 1 hour 39 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>

Local storm report, Apr 4, 4:54 PM CDT, 1 hour 23 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>

Local storm report, Apr 4, 5:14 PM CDT, 1 hour 3 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>

Local storm report, Apr 4, 5:35 PM CDT, 42 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
Apr 4, 6:05 AM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada, Leflore, Montgomery, Webster	25 min
Apr 4, 8:38 AM CDT	Flash Flood Warning	JAN	Bolivar, Carroll, Grenada, Leflore, Sunflower, Washington	6 hr
Apr 4, 10:49 AM CDT	Severe Thunderstorm Warning	JAN	Issaquena, Sharkey, Warren	56 min
Apr 4, 11:16 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Warren	44 min
Apr 4, 11:25 AM CDT	Tornado Warning	JAN	Issaquena, Sharkey, Warren, Yazoo	35 min
Apr 4, 11:30 AM CDT	Severe Thunderstorm Warning	JAN	Holmes, Humphreys, Sharkey, Yazoo	60 min
Apr 4, 11:31 AM CDT	Severe Thunderstorm Warning	JAN	Adams, Claiborne, Jefferson	44 min
Apr 4, 11:41 AM CDT	Severe Thunderstorm Warning	JAN	Claiborne, Hinds, Madison, Warren	64 min
Apr 4, 11:44 AM CDT	Tornado Warning	JAN	Hinds, Warren	31 min
Apr 4, 11:53 AM CDT	Tornado Warning	JAN	Madison, Yazoo	52 min
Apr 4, 11:57 AM CDT	Tornado Warning	JAN	Hinds, Madison, Warren, Yazoo	48 min
Apr 4, 12:04 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes, Leake	41 min
Apr 4, 12:07 PM CDT	Tornado Warning	JAN	Attala, Holmes, Leake	38 min
Apr 4, 12:10 PM CDT	Tornado Warning	JAN	Hinds, Rankin	50 min
Apr 4, 12:16 PM CDT	Severe Thunderstorm Warning	JAN	Copiah, Hinds, Rankin, Simpson	44 min
Apr 4, 12:30 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Madison, Rankin, Scott	45 min
Apr 4, 12:33 PM CDT	Tornado Warning Emergency	JAN	Hinds, Madison, Rankin, Scott	42 min
Apr 4, 12:40 PM CDT	Severe Thunderstorm Warning	JAN	Adams, Franklin, Jefferson	35 min
Apr 4, 12:48 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake, Neshoba, Winston	57 min
Apr 4, 12:52 PM CDT	Tornado Warning	JAN	Rankin, Scott, Smith	38 min
Apr 4, 1:01 PM CDT	Severe Thunderstorm Warning	JAN	Simpson, Smith	15 min
Apr 4, 1:02 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Neshoba, Newton, Scott	58 min
Apr 4, 1:08 PM CDT	River Flood Warning	JAN	Sunflower	5 days
Apr 4, 1:08 PM CDT	River Flood Warning	JAN	Sharkey	55 hr
Apr 4, 1:08 PM CDT	River Flood Warning	JAN	Carroll, Leflore	45 hr
Apr 4, 1:21 PM CDT	Severe Thunderstorm Warning	JAN	Clarke	27 min
Apr 4, 1:47 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale	43 min
Apr 4, 3:58 PM CDT	Severe Thunderstorm Warning	JAN	Jones	32 min
Apr 4, 6:51 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne	39 min
Apr 4, 10:16 AM CDT	Severe Thunderstorm Warning	JAN	East Carroll, Madison, Morehouse, Richland, West Carroll	44 min
Apr 4, 10:28 AM CDT	Severe Thunderstorm Warning	JAN	Franklin, Madison, Richland, Tensas	47 min
Apr 4, 10:40 AM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia, Franklin, Tensas	50 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 2008 Every severe thunderstorm warning in 2008

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.