Alert archive / Kansas / Mesoscale Discussions in 2015

Mesoscale Discussion 348

April 17, 20157 counties in Colorado; 34 counties in Kansas; 11 counties in Nebraska

The Storm Prediction Center issued this mesoscale discussion at Apr 17, 2015, 7:56 PM MDT for 7 counties in Colorado; 34 counties in Kansas; 11 counties in Nebraska. It was in force for 94 min.

The area

The outline as issued.

The facts

Issued
Apr 17, 2015, 7:56 PM MDT (01:56 UTC)
Expired
Apr 17, 2015, 9:30 PM MDT
In force
94 min
Issued by
the Storm Prediction Center
All 52 counties

Cheyenne County, CO, Kit Carson County, CO, Logan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Yuma County, CO, Cheyenne County, KS, Clark County, KS, Comanche County, KS, Decatur County, KS, Edwards County, KS, Ellis County, KS, Finney County, KS, Ford County, KS, Gove County, KS, Graham County, KS, Grant County, KS, Gray County, KS, Greeley County, KS, Hamilton County, KS, Haskell County, KS, Hodgeman County, KS, Kearny County, KS, Kiowa County, KS, Lane County, KS, Logan County, KS, Meade County, KS, Ness County, KS, Norton County, KS, Pawnee County, KS, Rawlins County, KS, Rush County, KS, Scott County, KS, Seward County, KS, Sheridan County, KS, Sherman County, KS, Thomas County, KS, Trego County, KS, Wallace County, KS, Wichita County, KS, Chase County, NE, Cheyenne County, NE, Deuel County, NE, Dundy County, NE, Frontier County, NE, Hayes County, NE, Hitchcock County, NE, Keith County, NE, Lincoln County, NE, Perkins County, NE, Red Willow County, NE

The radar

The Goodland radar (KGLD), 79 km from the middle of the area, began a volume at 01:59 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

Dodge City, (KDDC), launched 00:00Z, 1.9 hours before the alert went out and 162 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 2015-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 317 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, Dodge City, at 00:00Z on 2015-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.1939587897Sfc1 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
317 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1257 m above ground
0-6 km bulk shear
61 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.2

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
Apr 17, 6:06 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Logan, Morgan, Phillips, Sedgwick and 2 more84 min
Apr 18, 2:08 PM MDTTornado WatchSPCCheyenne, Kit Carson, Logan, Phillips, Sedgwick, Washington and 1 more6 hr
Apr 18, 5:07 PM MDTMesoscale DiscussionSPCCheyenne, Kit Carson, Logan, Phillips, Sedgwick, Yuma53 min
Apr 17, 6:26 PM MDTMesoscale DiscussionSPCGrant, Morton, Stevens2 hr
Apr 17, 7:24 PM MDTMesoscale DiscussionSPCEllsworth, Lincoln, Mitchell, Osborne, Phillips, Russell and 1 more2 hr
Apr 18, 11:45 AM MDTMesoscale DiscussionSPCBarber, Harper, Kingman, Pratt60 min
Apr 18, 12:52 PM MDTMesoscale DiscussionSPCBarber, Clark, Comanche, Edwards, Ford, Kiowa and 1 more113 min
Apr 18, 1:43 PM MDTSevere Thunderstorm WatchSPCBarber, Barton, Butler, Clark, Comanche, Cowley and 27 more8 hr
Apr 18, 1:49 PM MDTMesoscale DiscussionSPCCheyenne, Decatur, Graham, Norton, Phillips, Rawlins and 3 more116 min
Apr 18, 3:07 PM MDTMesoscale DiscussionSPCButler, Chase, Chautauqua, Clay, Cowley, Dickinson and 9 more2 hr
Apr 18, 4:31 PM MDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 24 more59 min
Apr 17, 10:48 PM MDTMesoscale DiscussionSPCFrontier, Hayes, Lincoln57 min

Nearby

Mesoscale Discussions in Kansas, 2015Mesoscale Discussions in Nebraska, 2015Mesoscale Discussions in Colorado, 2015Every mesoscale discussion in 2015

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.