Alert archive / Missouri / Mesoscale Discussions in 2003

Mesoscale Discussion 789

May 6, 200323 counties in Kansas; 24 counties in Missouri

The Storm Prediction Center issued this mesoscale discussion at May 6, 2003, 11:29 AM CDT for 23 counties in Kansas; 24 counties in Missouri. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 6, 2003, 11:29 AM CDT (16:29 UTC)
Expired
May 6, 2003, 1:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 47 counties

Allen County, KS, Anderson County, KS, Bourbon County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Osage County, KS, Shawnee County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Barton County, MO, Bates County, MO, Benton County, MO, Cass County, MO, Cedar County, MO, Clay County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Lafayette County, MO, Morgan County, MO, Pettis County, MO, Platte County, MO, Polk County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO, Vernon County, MO

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 12:00Z, 4.5 hours before the alert went out and 120 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 12:00Z on 2003-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 98 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 12:00Z on 2003-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -56 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
98 J/kg
Mixed-layer CIN
-211 J/kg
Mixed-layer LCL
1345 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
-56 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

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
May 6, 6:49 AM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Coffey, Crawford, Douglas and 11 more3 hr
May 6, 7:55 AM CDTSevere Thunderstorm WatchSPCAnderson, Bourbon, Crawford, Franklin, Linn, Miami and 1 more5 hr
May 6, 8:50 AM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Brown, Chase, Clay, Cloud and 28 more4 hr
May 6, 11:40 AM CDTTornado WatchSPCAllen, Anderson, Bourbon, Chase, Chautauqua, Cherokee and 20 more7 hr
May 6, 3:42 PM CDTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Cherokee, Crawford, Labette and 4 more2 hr
May 5, 10:58 PM CDTMesoscale DiscussionSPCBarry, Bollinger, Cape Girardeau, Carter, Christian, Douglas and 14 more2 hr
May 6, 1:50 AM CDTTornado WatchSPCDunklin, Pemiscot6 hr
May 6, 10:32 AM CDTMesoscale DiscussionSPCMcDonald118 min
May 6, 11:55 AM CDTSevere Thunderstorm WatchSPCCole, Crawford, Dent, Franklin, Gasconade, Iron and 16 more4 hr
May 6, 2:15 PM CDTTornado WatchSPCBoone, Callaway, Camden, Carter, Cole, Cooper and 27 more5 hr
May 6, 5:08 PM CDTMesoscale DiscussionSPCFranklin, Jefferson, Saint Charles, Saint Louis, Warren, City of Saint Louis2 hr
May 6, 5:33 PM CDTMesoscale DiscussionSPCBarry, Carter, Christian, Crawford, Dade, Dent and 23 more117 min
May 6, 5:40 PM CDTTornado WatchSPCBollinger, Butler, Cape Girardeau, Iron, Jefferson, Madison and 11 more6 hr
May 6, 6:35 PM CDTTornado WatchSPCBarry, Barton, Camden, Carter, Cedar, Christian and 31 more5 hr

Nearby

Mesoscale Discussions in Missouri, 2003Mesoscale Discussions in Kansas, 2003Every 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.