Alert archive / Alabama / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 24, NWS Huntsville, AL

March 1, 2017Cullman County, Marshall County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Mar 1, 2017, 2:54 PM CST for Cullman County, Marshall County, Alabama. It was in force for 36 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: Mar 1, 2017, 2:54 PM CST (20:54 UTC)
Expired: Mar 1, 2017, 3:30 PM CST
In force: 36 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cullman County, AL, Marshall County, AL

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 1, 11:48 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 8.9 hours before the alert went out and 120 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: 246 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 549 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 290 m²/s²
0-3 km storm-relative helicity: 372 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 3.3

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 Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 1, 2:53 PM CST, 1 minute earlier.

Area forecast discussion, Mar 1, 2:53 PM CST, 1 minute 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, Mar 1, 2:05 PM CST, 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>

In the hours before

Local storm report, Mar 1, 1:47 PM CST, 1 hour 7 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, Mar 1, 2:27 PM CST, 27 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, Mar 1, 2:31 PM CST, 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>

Special weather statement, Mar 1, 2:36 PM CST, 18 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, Mar 1, 2:39 PM CST, 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>

Local storm report, Mar 1, 2:42 PM CST, 12 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 Huntsville, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 1, 10:28 AM CST	Special Weather Statement	HUN	Lauderdale	32 min
Mar 1, 10:58 AM CST	Severe Thunderstorm Warning	HUN	Lauderdale	32 min
Mar 1, 11:31 AM CST	Special Weather Statement	HUN	Colbert, Lauderdale	29 min
Mar 1, 11:44 AM CST	Severe Thunderstorm Warning	HUN	Lauderdale, Limestone	31 min
Mar 1, 11:58 AM CST	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale, Lawrence, Limestone	32 min
Mar 1, 12:10 PM CST	Tornado Warning	HUN	Lauderdale, Limestone	35 min
Mar 1, 12:32 PM CST	Severe Thunderstorm Warning	HUN	Colbert, Lawrence	28 min
Mar 1, 12:38 PM CST	Special Weather Statement	HUN	Limestone	37 min
Mar 1, 12:44 PM CST	Severe Thunderstorm Warning	HUN	Limestone, Madison	31 min
Mar 1, 12:53 PM CST	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Morgan	37 min
Mar 1, 1:10 PM CST	Severe Thunderstorm Warning	HUN	Jackson, Madison	35 min
Mar 1, 1:19 PM CST	Severe Thunderstorm Warning	HUN	Madison	26 min
Mar 1, 1:19 PM CST	Severe Thunderstorm Warning	HUN	Franklin, Lawrence	26 min
Mar 1, 1:39 PM CST	Severe Thunderstorm Warning	HUN	Cullman, Morgan	36 min
Mar 1, 1:43 PM CST	Severe Thunderstorm Warning	HUN	Jackson	32 min
Mar 1, 2:10 PM CST	Severe Thunderstorm Warning	HUN	Marshall, Morgan	35 min
Mar 1, 2:15 PM CST	Areal Flood Warning	HUN	Morgan	2 hr
Mar 1, 2:19 PM CST	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	26 min
Mar 1, 2:36 PM CST	Special Weather Statement	HUN	Cullman	24 min
Mar 1, 2:40 PM CST	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Marshall	50 min
Mar 1, 3:05 PM CST	Severe Thunderstorm Warning	HUN	Cullman	25 min
Mar 1, 11:49 AM CST	Special Weather Statement	HUN	Lincoln	26 min
Mar 1, 12:00 PM CST	Severe Thunderstorm Warning	HUN	Franklin, Lincoln, Moore	30 min
Mar 1, 12:27 PM CST	Special Weather Statement	HUN	Lincoln	33 min
Mar 1, 12:30 PM CST	Special Weather Statement	HUN	Franklin	30 min
Mar 1, 12:52 PM CST	Severe Thunderstorm Warning	HUN	Franklin, Moore	23 min
Mar 1, 1:41 PM CST	Severe Thunderstorm Warning	HUN	Franklin	19 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2017 Every severe thunderstorm warning in 2017

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.