Alert archive / Georgia / Mesoscale Discussions in 2014

Mesoscale Discussion 16

January 11, 201418 counties in Alabama; 5 counties in Florida; 59 counties in Georgia

The Storm Prediction Center issued this mesoscale discussion at Jan 11, 2014, 7:03 AM CST for 18 counties in Alabama; 5 counties in Florida; 59 counties in Georgia. It was in force for 27 min.

The area

The outline as issued.

The facts

Issued: Jan 11, 2014, 7:03 AM CST (13:03 UTC)
Expired: Jan 11, 2014, 7:30 AM CST
In force: 27 min
Issued by: the Storm Prediction Center
Chance of a watch: 95%

All 82 counties

Barbour County, AL, Bullock County, AL, Butler County, AL, Chambers County, AL, Coffee County, AL, Conecuh County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Calhoun County, FL, Gadsden County, FL, Holmes County, FL, Jackson County, FL, Washington County, FL, Baker County, GA, Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Butts County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Crawford County, GA, Crisp County, GA, Decatur County, GA, DeKalb County, GA, Dooly County, GA, Dougherty County, GA, Douglas County, GA, Early County, GA, Fayette County, GA, Fulton County, GA, Grady County, GA, Harris County, GA, Heard County, GA, Henry County, GA, Houston County, GA, Jasper County, GA, Jones County, GA, Lamar County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Meriwether County, GA, Miller County, GA, Mitchell County, GA, Monroe County, GA, Muscogee County, GA, Newton County, GA, Peach County, GA, Pike County, GA, Pulaski County, GA, Putnam County, GA, Quitman County, GA, Randolph County, GA, Rockdale County, GA, Schley County, GA, Seminole County, GA, Spalding County, GA, Stewart County, GA, Sumter County, GA, Talbot County, GA, Taylor County, GA, Terrell County, GA, Troup County, GA, Twiggs County, GA, Upson County, GA, Webster County, GA, Wilkinson County, GA, Worth County, GA

The radar

The Maxwell AFB radar (KMXX), 85 km from the middle of the area, began a volume at 13:05 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.1 hours before the alert went out and 119 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: 214 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 471 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 452 m²/s²
0-3 km storm-relative helicity: 501 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.2

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
Jan 10, 11:41 PM CST	Mesoscale Discussion	SPC	Choctaw, Washington	2 hr
Jan 11, 3:18 AM CST	Mesoscale Discussion	SPC	Autauga, Baldwin, Butler, Choctaw, Clarke, Conecuh and 13 more	117 min
Jan 11, 7:07 AM CST	Tornado Watch	SPC	Barbour, Bullock, Chambers, Lee, Macon, Montgomery and 2 more	7 hr
Jan 11, 10:04 AM CST	Severe Thunderstorm Watch	SPC	Dale, Geneva, Henry, Houston	6 hr
Jan 11, 12:53 PM CST	Mesoscale Discussion	SPC	Henry, Houston	97 min
Jan 11, 2:35 PM CST	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Clay, Columbia, Duval and 3 more	55 min
Jan 11, 8:22 AM CST	Mesoscale Discussion	SPC	Hart	23 min
Jan 11, 8:30 AM CST	Severe Thunderstorm Watch	SPC	Columbia, Elbert, Lincoln, McDuffie	6 hr
Jan 11, 10:50 AM CST	Tornado Watch	SPC	Burke, Richmond	6 hr
Jan 11, 11:17 AM CST	Mesoscale Discussion	SPC	Appling, Bacon, Baldwin, Ben Hill, Bleckley, Bryan and 32 more	58 min
Jan 11, 12:51 PM CST	Tornado Watch	SPC	Appling, Atkinson, Bacon, Brantley, Bryan, Bulloch and 20 more	3 hr
Jan 11, 1:04 PM CST	Mesoscale Discussion	SPC	Richmond	56 min

Nearby

Mesoscale Discussions in Georgia, 2014 Mesoscale Discussions in Alabama, 2014 Mesoscale Discussions in Florida, 2014 Every mesoscale discussion in 2014

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.