Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 142, NWS Birmingham, AL

June 12, 2023Macon County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 12, 2023, 1:42 AM CDT for Macon County, Alabama. It was in force for 32 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: Jun 12, 2023, 1:42 AM CDT (06:42 UTC)
Expired: Jun 12, 2023, 2:14 AM CDT
In force: 32 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Macon County, AL

The radar

The Maxwell AFB radar (KMXX), 19 km from the middle of the area, began a volume at 06:44 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

Birmingham, AL (KBMX), launched 00:00Z, 6.7 hours before the alert went out and 135 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: 2168 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 1466 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 79 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.6

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 Birmingham, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 11, 6:58 PM CDT, 6 hours 44 minutes earlier.

Area forecast discussion, Jun 11, 6:58 PM CDT, 6 hours 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, Jun 11, 3:44 AM CDT, 21 hours 58 minutes before

Hazardous Weather Outlook
National Weather Service Birmingham AL
344 AM CDT Sun Jun 11 2023

ALZ011>015-017>050-121145-
Marion-Lamar-Fayette-Winston-Walker-Blount-Etowah-Calhoun-Cherokee-
Cleburne-Pickens-Tuscaloosa-Jefferson-Shelby-St. Clair-Talladega-
Clay-Randolph-Sumter-Greene-Hale-Perry-Bibb-Chilton-Coosa-Tallapoosa-
Chambers-Marengo-Dallas-Autauga-Lowndes-Elmore-Montgomery-Macon-
Bullock-Lee-Russell-Pike-Barbour-
344 AM CDT Sun Jun 11 2023

This Hazardous Weather Outlook is for the counties served by the
National Weather Service office in Birmingham.

.DAY ONE...Outlook through Tonight.

Severe thunderstorms are possible across all of Central Alabama
this afternoon through tonight. The primary threats are damaging
wind gusts and large hail.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Severe thunderstorms are possible across southern portions of Central
Alabama Monday afternoon and evening. The primary threats are
damaging wind gusts and large hail.

Multiple periods of showers and thunderstorms are forecast Tuesday
and Wednesday. Locally heavy rainfall will be possible, and this
could result in flash flooding.

.SPOTTER INFORMATION STATEMENT...

Activation of storm spotters and emergency management is needed
today and tonight. Activation could be needed Monday through
Wednesday.

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 8:19 PM CDT	Special Weather Statement	BMX	Winston	26 min
Jun 11, 8:45 PM CDT	Special Weather Statement	BMX	Winston	30 min
Jun 11, 8:45 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	60 min
Jun 11, 8:54 PM CDT	Severe Thunderstorm Warning	BMX	Winston	30 min
Jun 11, 9:13 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion	40 min
Jun 11, 9:19 PM CDT	Special Weather Statement	BMX	Winston	26 min
Jun 11, 9:25 PM CDT	Special Weather Statement	BMX	Marion	35 min
Jun 11, 9:36 PM CDT	Special Weather Statement	BMX	Fayette	39 min
Jun 11, 9:44 PM CDT	Special Weather Statement	BMX	Cullman	46 min
Jun 11, 9:56 PM CDT	Special Weather Statement	BMX	Walker	49 min
Jun 11, 10:07 PM CDT	Special Weather Statement	BMX	Blount, Etowah	23 min
Jun 11, 10:27 PM CDT	Special Weather Statement	BMX	Cherokee, Etowah, St. Clair	33 min
Jun 11, 10:47 PM CDT	Severe Thunderstorm Warning	BMX	Pickens	44 min
Jun 11, 10:52 PM CDT	Special Weather Statement	BMX	Jefferson, Tuscaloosa	38 min
Jun 11, 10:57 PM CDT	Special Weather Statement	BMX	Calhoun, Cherokee, Cleburne, St. Clair	48 min
Jun 11, 11:11 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, St. Clair, Shelby, Tuscaloosa	45 min
Jun 11, 11:16 PM CDT	Special Weather Statement	BMX	Greene, Hale	44 min
Jun 11, 11:35 PM CDT	Special Weather Statement	BMX	Cleburne, Talladega	40 min
Jun 11, 11:39 PM CDT	Special Weather Statement	BMX	Lowndes	36 min
Jun 11, 11:47 PM CDT	Special Weather Statement	BMX	Chilton, Coosa, Talladega	43 min
Jun 11, 11:52 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Sumter	42 min
Jun 12, 12:10 AM CDT	Special Weather Statement	BMX	Sumter	35 min
Jun 12, 12:14 AM CDT	Special Weather Statement	BMX	Clay, Randolph	46 min
Jun 12, 12:24 AM CDT	Special Weather Statement	BMX	Autauga, Coosa, Elmore, Tallapoosa	51 min
Jun 12, 12:37 AM CDT	Special Weather Statement	BMX	Dallas, Sumter	38 min
Jun 12, 12:57 AM CDT	Severe Thunderstorm Warning	BMX	Dallas, Marengo, Perry	48 min
Jun 12, 1:12 AM CDT	Special Weather Statement	BMX	Elmore, Lee, Macon, Montgomery	48 min
Jun 12, 1:16 AM CDT	Special Weather Statement	BMX	Dallas, Marengo, Sumter	44 min
Jun 12, 1:31 AM CDT	Severe Thunderstorm Warning	BMX	Marengo, Sumter	44 min
Jun 12, 1:55 AM CDT	Special Weather Statement	BMX	Russell	35 min
Jun 12, 2:03 AM CDT	Severe Thunderstorm Warning	BMX	Russell	26 min
Jun 12, 2:06 AM CDT	Special Weather Statement	BMX	Dallas	24 min
Jun 12, 2:14 AM CDT	Special Weather Statement	BMX	Marengo	31 min
Jun 12, 2:29 AM CDT	Special Weather Statement	BMX	Barbour, Russell	31 min
Jun 12, 3:10 PM CDT	Special Weather Statement	BMX	Russell	50 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2023 Every severe thunderstorm warning in 2023

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.