Alert archive / Missouri / Mesoscale Discussions in 2007

Mesoscale Discussion 418

April 3, 200712 counties in Kansas; 18 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at Apr 3, 2007, 4:28 AM CDT for 12 counties in Kansas; 18 counties in Missouri. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued
Apr 3, 2007, 4:28 AM CDT (09:28 UTC)
Expired
Apr 3, 2007, 5:30 AM CDT
In force
62 min
Issued by
the Storm Prediction Center
All 30 counties

Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Lyon County, KS, Miami County, KS, Morris County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS, Wyandotte County, KS, Carroll County, MO, Cass County, MO, Chariton County, MO, Clay County, MO, Cole County, MO, Cooper County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Moniteau County, MO, Morgan County, MO, Pettis County, MO, Platte County, MO, Randolph County, MO, Ray County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 36 km from the middle of the area, began a volume at 09:28 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

Topeka, KS (KTOP), launched 00:00Z, 9.5 hours before the alert went out and 91 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-pSkew-T log-p diagram, Topeka, KS at 00:00Z on 2007-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 693 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2007-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 122 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
693 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
2639 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
122 m²/s²
0-3 km storm-relative helicity
292 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.5

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.

IssuedProductOfficeCountiesLasted
Apr 2, 7:52 PM CDTMesoscale DiscussionSPCRepublic83 min
Apr 2, 11:40 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Jefferson, Marshall and 3 more65 min
Apr 3, 12:03 AM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Doniphan, Marshall, Nemaha7 hr
Apr 3, 2:22 AM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jackson, Marshall, Nemaha53 min
Apr 3, 7:17 AM CDTMesoscale DiscussionSPCAnderson, Franklin, Johnson, Linn, Miami88 min
Apr 2, 8:05 PM CDTMesoscale DiscussionSPCAtchison, Harrison, Mercer, Nodaway, Putnam, Schuyler and 1 more115 min
Apr 3, 4:05 AM CDTMesoscale DiscussionSPCAdair, Clark, Knox, Lewis, Macon, Marion and 3 more55 min
Apr 3, 4:19 AM CDTSevere Thunderstorm WatchSPCClark, Knox, Lewis, Marion, Monroe, Pike and 3 more6 hr
Apr 3, 7:37 AM CDTSevere Thunderstorm WatchSPCAudrain, Bates, Benton, Boone, Callaway, Camden and 30 more8 hr
Apr 3, 9:08 AM CDTMesoscale DiscussionSPCSaint Louis, City of Saint Louis67 min
Apr 3, 9:46 AM CDTMesoscale DiscussionSPCAudrain, Bates, Benton, Boone, Callaway, Camden and 37 more29 min
Apr 3, 11:04 AM CDTMesoscale DiscussionSPCBarry, Barton, Benton, Bollinger, Boone, Butler and 62 more26 min
Apr 3, 11:51 AM CDTTornado WatchSPCBarry, Barton, Bollinger, Butler, Camden, Cape Girardeau and 50 more8 hr
Apr 3, 2:17 PM CDTMesoscale DiscussionSPCDunklin, Pemiscot118 min
Apr 3, 2:25 PM CDTMesoscale DiscussionSPCBarry, Bollinger, Butler, Cape Girardeau, Carter, Christian and 39 more65 min
Apr 3, 3:12 PM CDTTornado WatchSPCDunklin, Pemiscot7 hr

Nearby

Mesoscale Discussions in Missouri, 2007Mesoscale Discussions in Kansas, 2007Every mesoscale discussion in 2007

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.