Alert archive / Georgia / Mesoscale Discussions in 2012

Mesoscale Discussion 1115

June 10, 20126 counties in Florida; 16 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2012, 6:35 PM EDT for 6 counties in Florida; 16 counties in Georgia. It was in force for 55 min.

The area

The outline as issued.

The facts

Issued: Jun 10, 2012, 6:35 PM EDT (22:35 UTC)
Expired: Jun 10, 2012, 7:30 PM EDT
In force: 55 min
Issued by: the Storm Prediction Center

All 22 counties

Gadsden County, FL, Gulf County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Wakulla County, FL, Ben Hill County, GA, Berrien County, GA, Brooks County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Grady County, GA, Irwin County, GA, Lanier County, GA, Lowndes County, GA, Pulaski County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Wilcox County, GA, Worth County, GA

The radar

The Tallahassee radar (KTLH), 42 km from the middle of the area, began a volume at 22:35 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

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.6 hours before the alert went out and 42 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: 1717 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 478 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!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>

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 1:05 AM EDT	Mesoscale Discussion	SPC	Taylor	25 min
Jun 10, 11:27 AM EDT	Mesoscale Discussion	SPC	Bay, Calhoun, Holmes, Jackson, Okaloosa, Santa Rosa and 2 more	93 min
Jun 10, 12:41 PM EDT	Tornado Watch	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 7 more	6 hr
Jun 10, 3:02 PM EDT	Mesoscale Discussion	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 5 more	88 min

Nearby

Mesoscale Discussions in Georgia, 2012 Mesoscale Discussions in Florida, 2012 Every mesoscale discussion 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.