Alert archive / Kansas / Mesoscale Discussions in 2019

Mesoscale Discussion 548

May 5, 20194 states

The Storm Prediction Center issued this mesoscale discussion at May 5, 2019, 6:33 PM CDT for 4 states. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued
May 5, 2019, 6:33 PM CDT (23:33 UTC)
Expired
May 5, 2019, 8:00 PM CDT
In force
87 min
Issued by
the Storm Prediction Center
Chance of a watch
80%
All 43 counties

Fremont County, IA, Atchison County, KS, Brown County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Doniphan County, KS, Douglas County, KS, Geary County, KS, Jackson County, KS, Jefferson County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Republic County, KS, Riley County, KS, Saline County, KS, Shawnee County, KS, Wabaunsee County, KS, Washington County, KS, Atchison County, MO, Holt County, MO, Cass County, NE, Clay County, NE, Fillmore County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Thayer County, NE, Webster County, NE

The radar

The Topeka radar (KTWX), 90 km from the middle of the area, began a volume at 23:35 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

Omaha, NE (KOAX), launched 12:00Z, 11.6 hours before the alert went out and 179 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, Omaha, NE at 12:00Z on 2019-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 85 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, Omaha, NE at 12:00Z on 2019-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 139 square meters per square second.193958Sfc1 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
85 J/kg
Mixed-layer CIN
-220 J/kg
Mixed-layer LCL
1223 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
139 m²/s²
0-3 km storm-relative helicity
128 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

<!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 5, 1:35 PM CDTMesoscale DiscussionSPCAdair, Audubon, Black Hawk, Boone, Butler, Calhoun and 21 more2 hr
May 5, 3:39 PM CDTSevere Thunderstorm WatchSPCFremont, Harrison, Mills, Pottawattamie, Shelby6 hr
May 5, 2:26 PM CDTMesoscale DiscussionSPCEllis, Finney, Ford, Gove, Graham, Gray and 15 more2 hr
May 5, 3:54 PM CDTMesoscale DiscussionSPCBarton, Edwards, Kiowa, Pawnee, Pratt, Russell and 1 more2 hr
May 5, 4:10 PM CDTSevere Thunderstorm WatchSPCBarber, Barton, Clark, Comanche, Edwards, Ellis and 27 more6 hr
May 5, 5:01 PM CDTMesoscale DiscussionSPCJewell, Marshall, Nemaha, Republic, Washington89 min
May 5, 5:30 PM CDTMesoscale DiscussionSPCHarper, Kingman, Sumner60 min
May 5, 5:51 PM CDTSevere Thunderstorm WatchSPCButler, Cowley, Harper, Harvey, Kingman, McPherson and 4 more7 hr
May 5, 6:52 PM CDTSevere Thunderstorm WatchSPCAtchison, Brown, Clay, Cloud, Dickinson, Doniphan and 12 more5 hr

Nearby

Mesoscale Discussions in Kansas, 2019Mesoscale Discussions in Nebraska, 2019Mesoscale Discussions in Missouri, 2019Every mesoscale discussion in 2019

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.