Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 112, NWS Duluth, MN

June 25, 1998Bayfield County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Jun 25, 1998, 3:15 PM CDT for Bayfield County, Wisconsin. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 25, 1998, 3:15 PM CDT (20:15 UTC)
Expired
Jun 25, 1998, 4:00 PM CDT
In force
45 min
Issued by
NWS Duluth, MN
Area
Whole counties

County Bayfield County, WI

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 273 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, Minneapolis, MN at 12:00Z on 1998-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 426 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, Minneapolis, MN at 12:00Z on 1998-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 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
426 J/kg
Mixed-layer CIN
-223 J/kg
Mixed-layer LCL
667 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
165 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

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 25, 2:00 PM CDT, 1 hour 15 minutes earlier.

Area forecast discussion, Jun 25, 2:00 PM CDT, 1 hour 15 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

In the hours before

Special weather statement, Jun 25, 10:08 AM CDT, 5 hours 7 minutes before
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-262000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
1000 AM CST THU JUN 25 1998

...SLIGHT RISK FOR SEVERE THUNDERSTORMS TODAY OVER A PORTION OF
NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. THIS AREA IS GENERALLY
EXTENDS EASTWARD FROM A NORTHERN ST. LOUIS COUNTY TO PINE COUNTY LINE.

THREAT...
HAIL TO 1 INCH SIZE AND DAMAGING WINDS TO 60 MPH.

DISCUSSION...
AN UPPER LEVEL DISTURBANCE OVER WEST CENTRAL MINNESOTA WILL MOVE INTO
NORTHERN WISCONSIN BY LATE AFTERNOON. THIS SYSTEM WILL TRIGGER SHOWERS
AND THUNDERSTORMS AS IT MOVES EASTWARD DURING THE DAY. WHILE MOST OF
THE THUNDERSTORM ACTIVITY IS EXPECTED TO BE BELOW SEVERE CRITERIA...
THE COMBINATION OF A RATHER POTENT DISTURBANCE WITH AMPLE MOISTURE MAY
BE ENOUGH TO PRODUCE ISOLATED SEVERE THUNDERSTORMS.

SPOTTER ACTIVATION...
SPOTTER GROUPS MAY BE NEEDED THIS AFTERNOON.

TOMALAK
Special weather statement, Jun 25, 10:30 AM CDT, 4 hours 45 minutes before
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-262000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
930 AM CST THU JUN 25 1998

.THREAT...
THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS IN ALL OF NORTHEAST
MINNESOTA AND ALL OF NORTHWEST WISCONSIN TONIGHT.

DISCUSSION...
A LOW PRESSURE SYSTEM IN THE CENTRAL DAKOTAS WILL MOVE SLOWLY
EASTWARD TODAY AS A WARM FRONT IN IOWA SURGES NORTHWARD.
THUNDERSTORMS ARE EXPECTED TO ERUPT NORTH OF THE WARM FRONT LATER
THIS EVENING AS WARM AND HUMID AIR AT THE SURFACE INTERACTS WITH THE
WARM FRONT. THE ONLY LIMITING FACTOR WILL BE VERY WARM AIR IN THE
MID LEVELS OF THE ATMOSPHERE WHICH MAY SUPPRESS THE DEVELOPMENT OF
THUNDERSTORMS COMPLETELY OVERNIGHT. IF STORMS DEVELOP...THEY COULD
BECOME SEVERE IN A VERY SHORT PERIOD OF TIME.

SPOTTER ACTIVATION...
SKYWARN SPOTTER ACTIVATION MAY BE NEEDED BY LATE EVENING.

DAP
Special weather statement, Jun 25, 11:00 AM CDT, 4 hours 15 minutes before
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-262000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
1000 AM CST THU JUN 25 1998

...SLIGHT RISK FOR SEVERE THUNDERSTORMS TODAY OVER A PORTION OF
NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. THIS AREA IS GENERALLY
EXTENDS EASTWARD FROM A NORTHERN ST. LOUIS COUNTY TO PINE COUNTY LINE.

THREAT...
HAIL TO 1 INCH SIZE AND DAMAGING WINDS TO 60 MPH.

DISCUSSION...
AN UPPER LEVEL DISTURBANCE OVER WEST CENTRAL MINNESOTA WILL MOVE INTO
NORTHERN WISCONSIN BY LATE AFTERNOON. THIS SYSTEM WILL TRIGGER SHOWERS
AND THUNDERSTORMS AS IT MOVES EASTWARD DURING THE DAY. WHILE MOST OF
THE THUNDERSTORM ACTIVITY IS EXPECTED TO BE BELOW SEVERE CRITERIA...
THE COMBINATION OF A RATHER POTENT DISTURBANCE WITH AMPLE MOISTURE MAY
BE ENOUGH TO PRODUCE ISOLATED SEVERE THUNDERSTORMS.

SPOTTER ACTIVATION...
SPOTTER GROUPS MAY BE NEEDED THIS AFTERNOON.

TOMALAK
Special weather statement, Jun 25, 1:50 PM CDT, 1 hour 25 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Jun 25, 1:55 PM CDT, 1 hour 20 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>
Special weather statement, Jun 25, 1:55 PM CDT, 1 hour 20 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>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 1:58 AM CDTSevere Thunderstorm WarningDLHPine57 min
Jun 25, 2:33 AM CDTSevere Thunderstorm WarningDLHPine27 min
Jun 25, 1:08 PM CDTTornado WarningDLHPine37 min
Jun 25, 2:50 PM CDTSevere Thunderstorm WarningDLHDouglas45 min
Jun 25, 3:48 PM CDTSevere Thunderstorm WarningDLHAshland62 min
Jun 25, 4:23 PM CDTSevere Thunderstorm WarningDLHIron47 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 1998Every severe thunderstorm warning in 1998

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.