Alert archive / Alabama / Special Weather Statements in 2020

Special Weather Statement, NWS Birmingham, AL

July 1, 2020Greene County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 1, 2020, 5:01 PM CDT for Greene County, Alabama. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 1, 2020, 5:01 PM CDT (22:01 UTC)
Expired
Jul 1, 2020, 5:30 PM CDT
In force
29 min
Issued by
NWS Birmingham, AL

County Greene County, AL

The radar

The Columbus AFB radar (KGWX), 112 km from the middle of the area, began a volume at 22:03 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 12:00Z, 10.0 hours before the alert went out and 137 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2020-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 829 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2020-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
829 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
911 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
162 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.3

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 1, 2:13 PM CDT, 2 hours 48 minutes earlier.

Area forecast discussion, Jul 1, 2:13 PM CDT, 2 hours 48 minutes before
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<body>
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    <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.
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      <p id="message2">
        Please try again in a few minutes.
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Hazardous weather outlook, Jul 1, 1:19 PM CDT, 3 hours 42 minutes before
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</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.
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In the hours before

Special weather statement, Jul 1, 5:01 PM CDT, 0 minutes before
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<head>
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<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.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 7:09 PM CDTSpecial Weather StatementBMXCherokee, Etowah51 min
Jun 30, 7:12 PM CDTSpecial Weather StatementBMXHale33 min
Jun 30, 7:23 PM CDTSevere Thunderstorm WarningBMXFayette, Walker13 min
Jun 30, 7:26 PM CDTSpecial Weather StatementBMXWinston64 min
Jun 30, 7:43 PM CDTSpecial Weather StatementBMXCherokee62 min
Jun 30, 8:10 PM CDTSpecial Weather StatementBMXWalker35 min
Jun 30, 8:37 PM CDTSpecial Weather StatementBMXSt. Clair38 min
Jun 30, 9:25 PM CDTSpecial Weather StatementBMXClay50 min
Jun 30, 9:40 PM CDTSpecial Weather StatementBMXShelby50 min
Jul 1, 12:53 AM CDTSpecial Weather StatementBMXMarion, Winston52 min
Jul 1, 8:41 AM CDTSpecial Weather StatementBMXTallapoosa34 min
Jul 1, 8:57 AM CDTAreal Flood AdvisoryBMXFayette, Lamar, Marion3 hr
Jul 1, 9:08 AM CDTSpecial Weather StatementBMXChambers, Tallapoosa67 min
Jul 1, 10:47 AM CDTSpecial Weather StatementBMXBarbour, Bullock43 min
Jul 1, 5:28 PM CDTAreal Flood AdvisoryBMXSumter2 hr
Jul 1, 5:30 PM CDTSpecial Weather StatementBMXGreene30 min
Jul 1, 5:40 PM CDTSpecial Weather StatementBMXPickens35 min
Jul 1, 6:25 PM CDTSpecial Weather StatementBMXHale35 min
Jul 1, 6:35 PM CDTSpecial Weather StatementBMXSumter40 min
Jul 1, 6:50 PM CDTSpecial Weather StatementBMXLamar, Marion55 min

Nearby

Special Weather Statements in Alabama, 2020Every special weather statement in 2020

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.