Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 142, NWS Duluth, MN

July 11, 20085 counties in Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Jul 11, 2008, 9:14 PM CDT for 5 counties in Wisconsin. It was in force for 31 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
Jul 11, 2008, 9:14 PM CDT (02:14 UTC)
Expired
Jul 11, 2008, 9:45 PM CDT
In force
31 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon

Counties Bayfield County, WI, Burnett County, WI, Douglas County, WI, Sawyer County, WI, Washburn County, WI

The radar

The Duluth radar (KDLH), 87 km from the middle of the area, began a volume at 02:16 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 watch it was issued in

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

IssuedProductOfficeLasted
Jul 11, 6:13 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.2 hours before the alert went out and 208 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 00:00Z on 2008-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2916 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 00:00Z on 2008-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 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
2916 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
1332 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
253 m²/s²
Significant tornado parameter
1.6
Supercell composite
12.9

Open this sounding in Storm Lab

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 Jul 11, 5:32 PM CDT, 3 hours 42 minutes earlier.

Area forecast discussion, Jul 11, 5:32 PM CDT, 3 hours 42 minutes before
AREA FORECAST DISCUSSION...MESOSCALE UPDATE
NATIONAL WEATHER SERVICE DULUTH MN
532 PM CDT FRI JUL 11 2008

.MESOSCALE UPDATE...CONCERNING SEVERE STORM MOVING INTO BRAINERD
LAKES REGION.

URGENT...STORM MOVING FROM STAPLES AREA INTO NISSWA...BRAINERD AND
GULL LAKE AREA APPEARS TO BE ACQUIRING HP SUPERCELL/BOW ECHO RADAR
SIGNATURES.  THREAT OF 80-100 MPH NON TORNADIC WINDS APPEARS TO BE
HIGH NEXT HOUR ALONG HIGHWAY 210 CORRIDOR FROM STAPLES TO BRAINERD
AND LAKE MILLE LACS.
 MILLER
Hazardous weather outlook, Jul 11, 1:45 PM CDT, 7 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE DULUTH MN
145 PM CDT FRI JUL 11 2008

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-121030-
KOOCHICHING-NORTHERN ST. LOUIS-NORTHERN COOK/NORTHERN LAKE-
NORTHERN ITASCA-CENTRAL ST. LOUIS-SOUTHERN LAKE/LAKESHORE-
SOUTHERN COOK/LAKESHORE-NORTHERN CASS-SOUTHERN ITASCA-
SOUTHERN CASS-CROW WING-NORTHERN AITKIN-SOUTHERN AITKIN-
CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD-ASHLAND-IRON-
BURNETT-WASHBURN-SAWYER-PRICE-
135 PM CDT FRI JUL 11 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND
NORTHWEST WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

ONGOING STRONG TO SEVERE THUNDERSTORMS OVER THE MINNESOTA ARROWHEAD
ARE EXPECTED TO PERSIST ALONG THE CANADIAN BORDER... INCLUDING THE
BOUNDARY WATERS CANOE AREA... FOR MUCH OF THIS AFTERNOON. THE
STRONGEST STORMS WILL STILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL
AND WIND GUSTS UP TO 60 MPH ALONG WITH LOCALLY HEAVY RAINFALL... BUT
THESE STORMS SHOULD BEGIN TO DIMINISH IN COVERAGE AND INTENSITY
AFTER 2 PM AS THEY MOVE INTO ONTARIO.

AS A STRONG DISTURBANCE AND FRONT APPROACH CENTRAL AND NORTHERN
MINNESOTA THIS AFTERNOON AND EVENING... ADDITIONAL SEVERE
THUNDERSTORMS ARE EXPECTED TO RAPIDLY DEVELOP DURING MID TO LATE
AFTERNOON ALONG AND AHEAD OF THE FRONT FROM LAKE OF THE WOODS...
SOUTHWARD TO ALEXANDRIA BETWEEN 2 AND 4 PM.  STORMS ARE THEN
EXPECTED TO MOVE EASTWARD ACROSS MUCH OF CENTRAL AND NORTHERN
MINNESOTA AND NORTHWEST WISCONSIN THIS EVENING AND OVERNIGHT.
WIDESPREAD DAMAGING WINDS AND VERY LARGE HAIL APPEAR LIKELY.  IN
ADDITION... THE STRONGEST STORMS WILL ALSO BE CAPABLE OF PRODUCING
TORNADOES. THE GREATEST TORNADO THREAT APPEARS TO EXIST BETWEEN 4
AND 9 PM IN AREAS FROM THE BRAINERD LAKES AREA...NORTHWARD TO
INTERNATIONAL FALLS AND CRANE LAKE.  EVERYONE... ESPECIALLY
VACATIONERS AND ANYONE WITH OUTDOOR OR LAKE PLANS TODAY... ARE URGED
TO STAY CURRENT WITH THE LATEST WEATHER INFORMATION THIS AFTERNOON
AND EVENING.

FINALLY... STRONG ONSHORE WINDS WILL RESULT IN AN INCREASED RISK OF
RIP CURRENTS ON THE SANDY BEACHES OF LAKE SUPERIOR...INCLUDING PARK
POINT...AND ALONG THE SOUTH SHORE TO THE APOSTLE ISLANDS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A SMALL CHANCE FOR THUNDERSTORMS SATURDAY AFTERNOON ACROSS
FAR NORTHERN MINNESOTA...AND ANOTHER CHANCE OF THUNDERSTORMS TUESDAY
NIGHT THROUGH THURSDAY ACROSS THE ENTIRE REGION.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION WILL BE REQUIRED THIS AFTERNOON AND
EVENING IN MOST AREAS.

LSZ121-140>148-121030-
BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN-
GRAND MARAIS TO TACONITE HARBOR MN-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN-
DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI-
SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI-
135 PM CDT FRI JUL 11 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF
WESTERN LAKE SUPERIOR.

.DAY ONE...THIS AFTERNOON AND TONIGHT

EAST TO NORTHEAST WINDS FROM 15 TO 25 MPH AT THE SOUTHWEST TIP OF
LAKE SUPERIOR AND PARTS OF THE NORTH SHORE WILL PERSIST INTO MID
AFTERNOON AND RESULT IN WAVE HEIGHTS OF 2 TO 5 FEET.  A SMALL CRAFT
ADVISORY IS IN EFFECT UNTIL 3 PM.  WINDS AND WAVES ARE EXPECTED TO
DECREASE LATE THIS AFTERNOON...BEFORE INCREASING OUT OF THE WEST
AFTER MIDNIGHT TONIGHT AFTER A FRONT PASSES.

A VERY STRONG SYSTEM WILL BRING A THREAT OF SEVERE THUNDERSTORMS
FROM LATE THIS AFTERNOON THROUGH TONIGHT. THE PRIMARY THREATS WILL
BE VERY LARGE HAIL...GALE TO STORM FORCE WIND GUSTS... AND FREQUENT
LIGHTNING.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A CHANCE FOR THUNDERSTORMS TUESDAY NIGHT THROUGH
THURSDAY.

 MILLER

In the hours before

Local storm report, Jul 11, 7:18 PM CDT, 1 hour 56 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>
Local storm report, Jul 11, 8:25 PM CDT, 49 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>
Local storm report, Jul 11, 8:36 PM CDT, 38 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>
Local storm report, Jul 11, 8:37 PM CDT, 37 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>
Local storm report, Jul 11, 8:46 PM CDT, 28 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>
Local storm report, Jul 11, 8:54 PM CDT, 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
Jul 11, 7:22 PM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Itasca, Lake, Pine, Saint Louis53 min
Jul 11, 7:31 PM CDTSpecial Marine WarningDLH89 min
Jul 11, 7:43 PM CDTSevere Thunderstorm WarningDLHCook, Lake, Saint Louis62 min
Jul 11, 8:11 PM CDTSevere Thunderstorm WarningDLHCarlton, Lake, Pine, Saint Louis64 min
Jul 11, 8:45 PM CDTSpecial Marine WarningDLH60 min
Jul 11, 8:49 PM CDTSevere Thunderstorm WarningDLHCook, Lake86 min
Jul 11, 9:41 PM CDTSpecial Marine WarningDLH64 min
Jul 11, 9:02 PM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Iron, Price, Sawyer58 min
Jul 11, 9:43 PM CDTSevere Thunderstorm WarningDLHBayfield, Sawyer, Washburn32 min
Jul 11, 9:57 PM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Iron, Price, Sawyer78 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2008Every severe thunderstorm warning in 2008

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.