Alert archive / Oklahoma / Mesoscale Discussions in 2003

Mesoscale Discussion 495

April 19, 20035 counties in Kansas; 12 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Apr 19, 2003, 12:58 AM CDT for 5 counties in Kansas; 12 counties in Oklahoma. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Apr 19, 2003, 12:58 AM CDT (05:58 UTC)
Expired
Apr 19, 2003, 3:00 AM CDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Barber County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Sumner County, KS, Alfalfa County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Major County, OK, Roger Mills County, OK, Woods County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 82 km from the middle of the area, began a volume at 05:58 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

Dodge City, (KDDC), launched 00:00Z, 6.0 hours before the alert went out and 177 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, Dodge City, at 00:00Z on 2003-04-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Dodge City, at 00:00Z on 2003-04-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
4233 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
79 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.

IssuedProductOfficeCountiesLasted
Apr 18, 7:33 PM CDTMesoscale DiscussionSPCAtchison, Brown, Doniphan, Jefferson57 min
Apr 18, 11:08 PM CDTMesoscale DiscussionSPCButler, Chase, Coffey, Douglas, Franklin, Harvey and 12 more2 hr
Apr 19, 1:25 AM CDTSevere Thunderstorm WatchSPCBarber, Butler, Chautauqua, Comanche, Cowley, Edwards and 11 more7 hr
Apr 19, 3:18 AM CDTMesoscale DiscussionSPCBourbon, Chautauqua, Cherokee, Crawford, Labette, Montgomery and 2 more117 min
Apr 19, 4:52 AM CDTMesoscale DiscussionSPCBarber, Butler, Comanche, Cowley, Greenwood, Harper and 7 more113 min
Apr 19, 9:01 AM CDTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Labette, Linn3 hr
Apr 19, 1:10 PM CDTMesoscale DiscussionSPCBarber, Comanche, Harper, Kingman, Pratt, Sedgwick and 1 more2 hr
Apr 19, 1:15 PM CDTTornado WatchSPCBarber, Clark, Comanche, Cowley, Harper, Kingman and 2 more7 hr
Apr 19, 2:30 PM CDTTornado WatchSPCButler, Chautauqua, Cherokee, Cowley, Crawford, Elk and 4 more7 hr
Apr 19, 4:58 PM CDTMesoscale DiscussionSPCAnderson, Chase, Coffey, Douglas, Franklin, Greenwood and 9 more92 min
Apr 19, 5:25 PM CDTSevere Thunderstorm WatchSPCAnderson, Coffey, Douglas, Franklin, Greenwood, Johnson and 7 more6 hr
Apr 19, 5:50 PM CDTMesoscale DiscussionSPCHarper, Kingman, Sumner85 min
Apr 19, 6:07 PM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Cowley, Crawford, Elk, Labette and 3 more83 min
Apr 19, 6:55 PM CDTSevere Thunderstorm WatchSPCBourbon, Cherokee, Crawford5 hr
Apr 18, 8:31 PM CDTMesoscale DiscussionSPCCaddo, Cleveland, Comanche, Cotton, Grady, Greer and 8 more2 hr
Apr 18, 9:50 PM CDTSevere Thunderstorm WatchSPCBeckham, Caddo, Canadian, Cleveland, Comanche, Cotton and 13 more6 hr
Apr 18, 11:32 PM CDTMesoscale DiscussionSPCBeckham, Caddo, Canadian, Cleveland, Comanche, Cotton and 10 more118 min
Apr 19, 1:20 AM CDTTornado WatchSPCComanche, Cotton, Greer, Harmon, Jackson, Kiowa and 2 more7 hr
Apr 19, 4:11 AM CDTMesoscale DiscussionSPCComanche, Cotton, Jackson, Kiowa, Stephens, Tillman2 hr
Apr 19, 2:02 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Cleveland, Coal, Creek and 25 more88 min
Apr 19, 3:15 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Choctaw, Cleveland, Coal, Creek and 25 more2 hr

Nearby

Mesoscale Discussions in Oklahoma, 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; radar from the NEXRAD Level II archive.