Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 13, NWS Duluth, MN

June 5, 1999Washburn County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Jun 5, 1999, 5:12 PM CDT for Washburn County, Wisconsin. It was in force for 48 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 5, 1999, 5:12 PM CDT (22:12 UTC)
Expired: Jun 5, 1999, 6:00 PM CDT
In force: 48 min
Issued by: NWS Duluth, MN
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Washburn County, WI

The radar

The Duluth radar (KDLH), 109 km from the middle of the area, began a volume at 22:15 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.

What was reported inside it

Time	Report	Where	Remark
Jun 5, 5:20 PM CDT	Tornado F0	Sarona, WI
Jun 5, 5:40 PM CDT	Thunderstorm Wind 50	Spooner, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 5, 2:30 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.2 hours before the alert went out and 183 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: 358 J/kg
Mixed-layer CIN: -218 J/kg
Mixed-layer LCL: 1247 m above ground
0-6 km bulk shear: 55 kt
0-1 km storm-relative helicity: -35 m²/s²
0-3 km storm-relative helicity: 32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 5, 3:23 PM CDT, 1 hour 49 minutes earlier.

Area forecast discussion, Jun 5, 3:23 PM CDT, 1 hour 49 minutes before

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In the hours before

Local storm report, Jun 5, 12:30 PM CDT, 4 hours 42 minutes before

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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
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Local storm report, Jun 5, 1:23 PM CDT, 3 hours 49 minutes before

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<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.
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      <p id="message2">
        Please try again in a few minutes.
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Special weather statement, Jun 5, 4:32 PM CDT, 40 minutes before

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</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>
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Special weather statement, Jun 5, 4:32 PM CDT, 40 minutes before

<!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>
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The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 10:56 PM CDT	Severe Thunderstorm Warning	DLH	Cass	64 min
Jun 4, 11:06 PM CDT	Severe Thunderstorm Warning	DLH	Itasca	54 min
Jun 4, 11:39 PM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	66 min
Jun 5, 1:02 AM CDT	Severe Thunderstorm Warning	DLH	Cass	58 min
Jun 5, 1:53 AM CDT	Severe Thunderstorm Warning	DLH	Cass, Itasca	67 min
Jun 5, 3:04 AM CDT	Severe Thunderstorm Warning	DLH	Itasca	56 min
Jun 5, 4:40 AM CDT	Severe Thunderstorm Warning	DLH	Pine	65 min
Jun 5, 4:13 PM CDT	Severe Thunderstorm Warning	DLH	Sawyer	32 min
Jun 5, 4:17 PM CDT	Severe Thunderstorm Warning	DLH	Bayfield	43 min
Jun 5, 4:37 PM CDT	Severe Thunderstorm Warning	DLH	Sawyer, Washburn	53 min
Jun 5, 4:53 PM CDT	Severe Thunderstorm Warning	DLH	Ashland, Sawyer	67 min
Jun 5, 5:41 PM CDT	Severe Thunderstorm Warning	DLH	Ashland	49 min
Jun 5, 5:57 PM CDT	Severe Thunderstorm Warning	DLH	Sawyer, Washburn	63 min
Jun 5, 6:16 PM CDT	Severe Thunderstorm Warning	DLH	Iron	44 min
Jun 5, 6:58 PM CDT	Severe Thunderstorm Warning	DLH	Price	62 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1999 Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.