Alert archive / Iowa / Mesoscale Discussions in 2006

Mesoscale Discussion 359

March 30, 20064 states

The Storm Prediction Center issued this mesoscale discussion at Mar 30, 2006, 7:29 AM CST for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Mar 30, 2006, 7:29 AM CST (13:29 UTC)
Expired
Mar 30, 2006, 9:30 AM CST
In force
2 hr
Issued by
the Storm Prediction Center
All 48 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Harrison County, IA, Ida County, IA, Madison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Polk County, IA, Pottawattamie County, IA, Ringgold County, IA, Sac County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Warren County, IA, Webster County, IA, Brown County, KS, Doniphan County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Worth County, MO, Nemaha County, NE, Richardson County, NE

The radar

The Omaha radar (KOAX), 102 km from the middle of the area, began a volume at 13:29 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, 1.5 hours before the alert went out and 102 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 2006-03-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 34 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 2006-03-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 322 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
34 J/kg
Mixed-layer CIN
-342 J/kg
Mixed-layer LCL
611 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
322 m²/s²
0-3 km storm-relative helicity
310 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
Mar 30, 12:03 PM CSTMesoscale DiscussionSPCCherokee, Lyon, Monona, O'Brien, Osceola, Plymouth and 2 more117 min
Mar 30, 1:22 PM CSTMesoscale DiscussionSPCAdair, Adams, Appanoose, Audubon, Boone, Buena Vista and 35 more113 min
Mar 30, 2:15 PM CSTTornado WatchSPCAdair, Adams, Audubon, Boone, Carroll, Cass and 20 more8 hr
Mar 30, 5:42 PM CSTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Bremer, Butler, Cerro Gordo and 27 more93 min
Mar 30, 5:58 PM CSTSevere Thunderstorm WatchSPCAllamakee, Appanoose, Benton, Black Hawk, Bremer, Buchanan and 51 more6 hr
Mar 30, 2:58 AM CSTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Decatur, Edwards and 26 more2 hr
Mar 30, 3:39 AM CSTSevere Thunderstorm WatchSPCBarton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 23 more5 hr
Mar 30, 7:07 AM CSTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Butler, Chase, Chautauqua and 14 more113 min
Mar 30, 8:42 AM CSTTornado WatchSPCAllen, Anderson, Barber, Barton, Bourbon, Brown and 56 more9 hr
Mar 30, 9:42 AM CSTMesoscale DiscussionSPCBarber, Barton, Comanche, Edwards, Ellis, Ellsworth and 23 more93 min
Mar 30, 11:47 AM CSTMesoscale DiscussionSPCClay, Cloud, Dickinson, Ellsworth, Geary, Harvey and 15 more88 min
Mar 30, 3:12 PM CSTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Brown, Butler and 35 more63 min
Mar 30, 5:39 PM CSTTornado WatchSPCAllen, Chautauqua, Elk, Labette, Montgomery, Neosho and 2 more6 hr

Nearby

Mesoscale Discussions in Iowa, 2006Mesoscale Discussions in Missouri, 2006Mesoscale Discussions in Kansas, 2006Every mesoscale discussion in 2006

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.