Alert archive / Georgia / Mesoscale Discussions in 2022

Mesoscale Discussion 433

April 6, 202216 counties in Georgia; Beaufort County, Jasper County, South Carolina

The Storm Prediction Center issued this mesoscale discussion at Apr 6, 2022, 8:34 PM EDT for 16 counties in Georgia; Beaufort County, Jasper County, South Carolina. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: Apr 6, 2022, 8:34 PM EDT (00:34 UTC)
Expired: Apr 6, 2022, 10:30 PM EDT
In force: 116 min
Issued by: the Storm Prediction Center
Concerning: Tornado watch 102

Counties Appling County, GA, Bryan County, GA, Bulloch County, GA, Candler County, GA, Chatham County, GA, Effingham County, GA, Evans County, GA, Glynn County, GA, Jenkins County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Screven County, GA, Tattnall County, GA, Toombs County, GA, Wayne County, GA, Beaufort County, SC, Jasper County, SC

The radar

The Charleston,SC radar (KCLX), 73 km from the middle of the area, began a volume at 00:33 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

Charleston AFB, SC (KCHS), launched 00:00Z, 0.6 hours before the alert went out and 169 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: 1861 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 726 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 4.6

Open this sounding in Storm Lab

The text

As transmitted.

<!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
Apr 6, 8:41 PM EDT	Mesoscale Discussion	SPC	Haralson	2 hr
Apr 7, 2:13 PM EDT	Mesoscale Discussion	SPC	Horry	62 min
Apr 7, 3:11 PM EDT	Severe Thunderstorm Watch	SPC	Dillon, Florence, Georgetown, Horry, Marion, Williamsburg	4 hr
Apr 7, 4:58 PM EDT	Mesoscale Discussion	SPC	Horry	2 hr

Nearby

Mesoscale Discussions in Georgia, 2022 Mesoscale Discussions in South Carolina, 2022 Every mesoscale discussion in 2022

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.