Alert archive / Florida / Mesoscale Discussions in 2016

Mesoscale Discussion 42

January 22, 20165 counties in Alabama; 12 counties in Florida; Decatur County, Seminole County, Georgia

The Storm Prediction Center issued this mesoscale discussion at Jan 22, 2016, 1:56 AM CST for 5 counties in Alabama; 12 counties in Florida; Decatur County, Seminole County, Georgia. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jan 22, 2016, 1:56 AM CST (07:56 UTC)
Expired: Jan 22, 2016, 4:00 AM CST
In force: 2 hr
Issued by: the Storm Prediction Center

Counties Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Leon County, FL, Liberty County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Decatur County, GA, Seminole County, GA

The radar

The Eglin Afb radar (KEVX), 24 km from the middle of the area, began a volume at 08:00 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 00:00Z, 7.9 hours before the alert went out and 132 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1670 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 201 m²/s²
0-3 km storm-relative helicity: 366 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Jan 21, 6:53 PM CST	Tornado Watch	SPC	Autauga, Baldwin, Butler, Choctaw, Clarke, Coffee and 21 more	10 hr
Jan 21, 8:38 PM CST	Mesoscale Discussion	SPC	Baldwin, Coffee, Conecuh, Covington, Escambia, Geneva and 3 more	2 hr
Jan 21, 11:33 PM CST	Mesoscale Discussion	SPC	Conecuh, Escambia	57 min
Jan 22, 4:51 AM CST	Mesoscale Discussion	SPC	Franklin, Gadsden, Jefferson, Leon, Liberty, Madison and 2 more	84 min
Jan 22, 7:37 AM CST	Mesoscale Discussion	SPC	Broward, Charlotte, Citrus, Collier, DeSoto, Hardee and 13 more	2 hr
Jan 22, 8:49 AM CST	Severe Thunderstorm Watch	SPC	Brevard, Charlotte, Citrus, DeSoto, Flagler, Hardee and 21 more	5 hr
Jan 22, 12:16 PM CST	Mesoscale Discussion	SPC	Brevard, Charlotte, DeSoto, Hardee, Highlands, Hillsborough and 13 more	119 min

Nearby

Mesoscale Discussions in Florida, 2016 Mesoscale Discussions in Alabama, 2016 Mesoscale Discussions in Georgia, 2016 Every mesoscale discussion in 2016

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.