Alert archive / Mississippi / Dense Fog Advisories in 2012

Dense Fog Advisory 13, NWS Jackson, MS

May 8, 20127 counties in Mississippi

NWS Jackson, MS issued this dense fog advisory at May 8, 2012, 6:07 AM CDT for 7 counties in Mississippi. It was in force for 3 hr.

The area

The counties it named.

The facts

Issued
May 8, 2012, 6:07 AM CDT (11:07 UTC)
Expired
May 8, 2012, 9:00 AM CDT
In force
3 hr
Issued by
NWS Jackson, MS

Counties Choctaw County, MS, Clay County, MS, Lowndes County, MS, Noxubee County, MS, Oktibbeha County, MS, Webster County, MS, Winston County, MS

The radar

The Columbus AFB radar (KGWX), 77 km from the middle of the area, began a volume at 11:08 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, 11.1 hours before the alert went out and 198 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 00:00Z on 2012-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 173 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 00:00Z on 2012-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.193958Sfc1 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
173 J/kg
Mixed-layer CIN
-148 J/kg
Mixed-layer LCL
1104 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this dense fog advisory 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 dense fog advisory went out at May 8, 4:27 AM CDT, 1 hour 40 minutes earlier.

Area forecast discussion, May 8, 4:27 AM CDT, 1 hour 40 minutes before
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Hazardous weather outlook, May 8, 5:04 AM CDT, 1 hour 3 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

Local storm report, May 8, 1:10 AM CDT, 4 hours 57 minutes before
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<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>
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  <script src="index.js"></script>
</body>
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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 11:54 PM CDTSpecial Weather StatementJANWashington31 min
May 8, 2:18 PM CDTSpecial Weather StatementJANAttala32 min
May 8, 2:34 PM CDTSpecial Weather StatementJANAttala16 min
May 8, 2:43 PM CDTFlash Flood WarningJANAttala2 hr
May 8, 2:50 PM CDTSpecial Weather StatementJANLeflore30 min
May 8, 2:56 PM CDTSpecial Weather StatementJANChoctaw29 min
May 8, 3:04 PM CDTSevere Thunderstorm WarningJANAttala41 min
May 8, 3:08 PM CDTSpecial Weather StatementJANWebster32 min
May 8, 3:18 PM CDTSevere Thunderstorm WarningJANCarroll, Grenada, Leflore42 min
May 8, 3:22 PM CDTFlash Flood WarningJANWashington91 min
May 8, 3:41 PM CDTSevere Thunderstorm WarningJANCarroll, Montgomery49 min
May 8, 4:13 PM CDTSpecial Weather StatementJANLeflore32 min
May 8, 5:04 PM CDTSpecial Weather StatementJANFranklin31 min
May 8, 5:30 PM CDTSevere Thunderstorm WarningJANKemper26 min
May 8, 5:55 PM CDTSpecial Weather StatementJANClaiborne30 min
May 8, 6:38 PM CDTSpecial Weather StatementJANMadison32 min
May 8, 5:20 PM CDTSpecial Weather StatementJANFranklin30 min
May 7, 11:55 PM CDTSpecial Weather StatementJANChicot30 min

Nearby

Dense Fog Advisories in Mississippi, 2012Every dense fog advisory in 2012

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.