Alert archive / Georgia / Mesoscale Discussions in 2003

Mesoscale Discussion 1955

July 22, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jul 22, 2003, 11:31 AM CDT for 4 states. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued: Jul 22, 2003, 11:31 AM CDT (16:31 UTC)
Expired: Jul 22, 2003, 1:30 PM CDT
In force: 119 min
Issued by: the Storm Prediction Center

All 85 counties

Bullock County, AL, Calhoun County, AL, Chambers County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Elmore County, AL, Lee County, AL, Macon County, AL, Randolph County, AL, Russell County, AL, Talladega County, AL, Tallapoosa County, AL, Banks County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Chattahoochee County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Elbert County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Greene County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Haralson County, GA, Harris County, GA, Hart County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lamar County, GA, Lumpkin County, GA, Madison County, GA, Meriwether County, GA, Monroe County, GA, Morgan County, GA, Muscogee County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Putnam County, GA, Rabun County, GA, Rockdale County, GA, Spalding County, GA, Stephens County, GA, Talbot County, GA, Towns County, GA, Troup County, GA, Union County, GA, Upson County, GA, Walton County, GA, White County, GA, Wilkes County, GA, Clay County, NC, Jackson County, NC, Macon County, NC, Transylvania County, NC, Abbeville County, SC, Anderson County, SC, Greenville County, SC, Laurens County, SC, Oconee County, SC, Pickens County, SC

The radar

The Atlanta radar (KFFC), 41 km from the middle of the area, began a volume at 16:31 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, 4.5 hours before the alert went out and 43 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: 491 J/kg
Mixed-layer CIN: -108 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -31 m²/s²
0-3 km storm-relative helicity: -17 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jul 22, 6:40 AM CDT	Severe Thunderstorm Watch	SPC	Colbert, Franklin, Lauderdale, Lawrence, Marion, Winston	3 hr
Jul 22, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Autauga, Bibb, Calhoun, Chambers, Cherokee, Chilton and 19 more	5 hr
Jul 22, 1:15 PM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bullock, Butler, Chambers, Coffee and 18 more	2 hr
Jul 22, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	Choctaw	6 hr
Jul 22, 2:40 PM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Barbour, Bullock, Butler, Clarke, Coffee and 16 more	5 hr
Jul 22, 6:21 PM CDT	Mesoscale Discussion	SPC	Washington	54 min
Jul 22, 2:10 PM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Bibb, Bleckley, Butts, Chattahoochee, Clarke and 37 more	3 hr
Jul 22, 2:59 PM CDT	Mesoscale Discussion	SPC	Appling, Bacon, Ben Hill, Bleckley, Bulloch, Burke and 31 more	2 hr
Jul 22, 12:19 PM CDT	Mesoscale Discussion	SPC	Alamance, Anson, Beaufort, Bertie, Bladen, Cabarrus and 58 more	86 min
Jul 22, 2:15 PM CDT	Mesoscale Discussion	SPC	Anson, Beaufort, Bertie, Bladen, Cabarrus, Chatham and 36 more	2 hr
Jul 22, 4:45 PM CDT	Severe Thunderstorm Watch	SPC	Alamance, Anson, Cabarrus, Caswell, Chatham, Davidson and 20 more	5 hr
Jul 22, 6:45 PM CDT	Mesoscale Discussion	SPC	Chatham, Cumberland, Durham, Edgecombe, Franklin, Granville and 14 more	90 min

Nearby

Mesoscale Discussions in Georgia, 2003 Mesoscale Discussions in Alabama, 2003 Mesoscale Discussions in South Carolina, 2003 Every mesoscale discussion in 2003

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.