Alert archive / Montana / Mesoscale Discussions in 2005

Mesoscale Discussion 1429

June 22, 200533 counties in Montana; 14 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2005, 7:58 PM MDT for 33 counties in Montana; 14 counties in North Dakota. It was in force for 62 min.

The area

The outline as issued.

The facts

Issued: Jun 22, 2005, 7:58 PM MDT (01:58 UTC)
Expired: Jun 22, 2005, 9:00 PM MDT
In force: 62 min
Issued by: the Storm Prediction Center

All 47 counties

Blaine County, MT, Broadwater County, MT, Cascade County, MT, Chouteau County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Fergus County, MT, Gallatin County, MT, Garfield County, MT, Golden Valley County, MT, Hill County, MT, Jefferson County, MT, Judith Basin County, MT, McCone County, MT, Meagher County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Silver Bow County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Valley County, MT, Wheatland County, MT, Wibaux County, MT, Yellowstone County, MT, Billings County, ND, Burke County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Mountrail County, ND, Renville County, ND, Slope County, ND, Stark County, ND, Ward County, ND, Williams County, ND

The radar

The Glasgow radar (KGGW), 135 km from the middle of the area, began a volume at 01:58 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 nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 2.0 hours before the alert went out and 342 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 403 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 2494 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 19 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.

Issued	Product	Office	Counties	Lasted
Jun 22, 9:47 PM MDT	Mesoscale Discussion	SPC	Big Horn, Blaine, Carbon, Cascade, Chouteau, Daniels and 23 more	58 min
Jun 23, 2:48 PM MDT	Mesoscale Discussion	SPC	Big Horn, Carbon	117 min
Jun 23, 1:13 PM MDT	Mesoscale Discussion	SPC	Barnes, Cavalier, Eddy, Foster, Grand Forks, Griggs and 6 more	62 min
Jun 23, 1:25 PM MDT	Tornado Watch	SPC	Barnes, Cass, Cavalier, Eddy, Foster, Grand Forks and 7 more	8 hr
Jun 23, 5:11 PM MDT	Mesoscale Discussion	SPC	Cass, Traill	64 min

Nearby

Mesoscale Discussions in Montana, 2005 Mesoscale Discussions in North Dakota, 2005 Every mesoscale discussion in 2005

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.