Alert archive / Alabama / Special Weather Statements in 2020

Special Weather Statement, NWS Mobile, AL

August 11, 2020Wilcox County, Alabama

NWS Mobile, AL issued this special weather statement at Aug 11, 2020, 12:39 PM CDT for Wilcox County, Alabama. It was in force for 51 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
Aug 11, 2020, 12:39 PM CDT (17:39 UTC)
Expired
Aug 11, 2020, 1:30 PM CDT
In force
51 min
Issued by
NWS Mobile, AL

County Wilcox County, AL

The radar

The Birmingham radar (KBMX), 127 km from the middle of the area, began a volume at 17:40 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, 5.7 hours before the alert went out and 128 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 2020-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 953 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 2020-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
953 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
1192 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
63 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Mobile, AL wrote its last area forecast discussion before this special weather statement went out at Aug 11, 10:57 AM CDT, 1 hour 42 minutes earlier.

Area forecast discussion, Aug 11, 10:57 AM CDT, 1 hour 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.
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In the hours before

Special weather statement, Aug 11, 12:39 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Mobile AL
1239 PM CDT Tue Aug 11 2020

ALZ054-111830-
Wilcox AL-
1239 PM CDT Tue Aug 11 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT THE FOLLOWING
COUNTIES...CENTRAL WILCOX COUNTY UNTIL 130 PM CDT...

At 1238 PM CDT, the strong hunderstorms were located along a line
extending from 11 miles southeast of Belknap to 4 miles west of
Dannelly Reservoir, and moving south at 10 mph.

Wind gusts of 40 to 50 mph will be possible with these storms.

Locations impacted include...
Camden and Pine Apple.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3220 8736 3220 8733 3214 8728 3214 8725
      3212 8726 3212 8725 3210 8723 3208 8719
      3205 8718 3205 8686 3196 8690 3196 8691
      3193 8691 3185 8694 3204 8748 3222 8738
TIME...MOT...LOC 1738Z 352DEG 10KT 3205 8692 3217 8729

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 7:32 PM CDTSpecial Weather StatementMOBCrenshaw43 min
Aug 10, 8:15 PM CDTSpecial Weather StatementMOBCrenshaw30 min
Aug 11, 5:54 AM CDTSpecial Weather StatementMOBBaldwin36 min
Aug 11, 6:42 AM CDTAreal Flood AdvisoryMOBBaldwin3 hr
Aug 11, 1:30 PM CDTSpecial Weather StatementMOBWilcox45 min
Aug 11, 2:09 PM CDTSpecial Weather StatementMOBCrenshaw66 min
Aug 11, 3:03 PM CDTSpecial Weather StatementMOBCrenshaw57 min
Aug 11, 3:17 PM CDTSevere Thunderstorm WarningMOBCovington, Crenshaw43 min
Aug 11, 3:45 PM CDTSpecial Weather StatementMOBCovington60 min
Aug 11, 3:53 PM CDTSpecial Marine WarningMOB52 min
Aug 11, 4:13 PM CDTSpecial Weather StatementMOBCovington62 min
Aug 11, 4:51 PM CDTAreal Flood AdvisoryMOBConecuh, Covington, Escambia3 hr
Aug 11, 5:01 PM CDTSpecial Marine WarningMOB59 min
Aug 11, 5:04 PM CDTSevere Thunderstorm WarningMOBClarke, Monroe41 min
Aug 11, 5:14 PM CDTSpecial Weather StatementMOBEscambia76 min
Aug 11, 5:28 PM CDTSevere Thunderstorm WarningMOBConecuh, Monroe62 min
Aug 11, 5:37 PM CDTSpecial Marine WarningMOB83 min
Aug 11, 5:43 PM CDTAreal Flood AdvisoryMOBConecuh, Escambia, Monroe3 hr
Aug 11, 5:52 PM CDTSevere Thunderstorm WarningMOBEscambia53 min
Aug 11, 6:19 PM CDTSpecial Weather StatementMOBBaldwin56 min
Aug 11, 6:36 PM CDTFlash Flood WarningMOBClarke, Conecuh, Escambia, Monroe3 hr
Aug 11, 6:40 PM CDTSpecial Marine WarningMOB95 min
Aug 11, 6:54 PM CDTSpecial Weather StatementMOBBaldwin66 min
Aug 11, 4:26 PM CDTSevere Thunderstorm WarningMOBOkaloosa64 min
Aug 11, 4:46 PM CDTSpecial Weather StatementMOBSanta Rosa59 min
Aug 11, 4:58 PM CDTSpecial Weather StatementMOBOkaloosa47 min
Aug 11, 6:56 PM CDTAreal Flood AdvisoryMOBEscambia, Santa Rosa3 hr

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.