Alert archive / Missouri / Mesoscale Discussions in 2008

Mesoscale Discussion 459

March 18, 20085 states

The Storm Prediction Center issued this mesoscale discussion at Mar 18, 2008, 11:54 AM CDT for 5 states. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Mar 18, 2008, 11:54 AM CDT (16:54 UTC)
Expired: Mar 18, 2008, 3:00 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center

All 68 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Fulton County, AR, Johnson County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Washington County, AR, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Jackson County, IL, Jefferson County, IL, Lawrence County, IL, Monroe County, IL, Perry County, IL, Randolph County, IL, Richland County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Daviess County, IN, Dubois County, IN, Gibson County, IN, Knox County, IN, Martin County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, Henderson County, KY, Barry County, MO, Bollinger County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, McDonald County, MO, Oregon County, MO, Ozark County, MO, Perry County, MO, Reynolds County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 193 km from the middle of the area, began a volume at 16:54 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

Springfield, MO (KSGF), launched 12:00Z, 4.9 hours before the alert went out and 226 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: 529 m above ground
0-6 km bulk shear: 67 kt
0-1 km storm-relative helicity: -191 m²/s²
0-3 km storm-relative helicity: -22 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
Mar 17, 7:34 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Crawford, Franklin and 11 more	56 min
Mar 17, 9:36 PM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 20 more	114 min
Mar 17, 10:16 PM CDT	Tornado Watch	SPC	Baxter, Benton, Boone, Carroll, Cleburne, Conway and 31 more	8 hr
Mar 18, 1:13 AM CDT	Mesoscale Discussion	SPC	Washington	62 min
Mar 18, 2:23 AM CDT	Mesoscale Discussion	SPC	Baxter, Benton, Boone, Carroll, Fulton, Madison and 2 more	2 hr
Mar 18, 2:46 AM CDT	Mesoscale Discussion	SPC	Baxter, Cleburne, Conway, Crawford, Faulkner, Franklin and 27 more	89 min
Mar 18, 5:54 AM CDT	Mesoscale Discussion	SPC	Benton, Boone, Carroll, Crawford, Madison, Washington	2 hr
Mar 18, 9:26 AM CDT	Mesoscale Discussion	SPC	Calhoun, Clark, Columbia, Conway, Dallas, Garland and 19 more	2 hr
Mar 18, 10:16 AM CDT	Tornado Watch PDS	SPC	Arkansas, Clark, Clay, Cleburne, Cleveland, Columbia and 48 more	7 hr
Mar 18, 10:59 AM CDT	Tornado Watch PDS	SPC	Union	8 hr
Mar 18, 12:10 PM CDT	Mesoscale Discussion	SPC	Arkansas, Clark, Cleburne, Cleveland, Conway, Craighead and 47 more	2 hr
Mar 18, 1:51 PM CDT	Mesoscale Discussion	SPC	Polk, Sevier	3 hr
Mar 18, 3:54 PM CDT	Mesoscale Discussion	SPC	Clark, Cleburne, Columbia, Dallas, Faulkner, Garland and 21 more	2 hr
Mar 18, 4:46 PM CDT	Mesoscale Discussion	SPC	Arkansas, Clark, Clay, Craighead, Crittenden, Cross and 19 more	59 min
Mar 18, 5:19 PM CDT	Tornado Watch	SPC	Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 43 more	11 hr
Mar 18, 6:06 PM CDT	Mesoscale Discussion	SPC	Clark, Clay, Cleburne, Conway, Craighead, Cross and 20 more	3 hr
Mar 18, 6:47 PM CDT	Tornado Watch	SPC	Union	9 hr

Nearby

Mesoscale Discussions in Missouri, 2008 Mesoscale Discussions in Illinois, 2008 Mesoscale Discussions in Arkansas, 2008 Every mesoscale discussion in 2008

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.