Alert archive / Minnesota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 41, NWS Duluth, MN

June 17, 2018Aitkin County, Carlton County, Saint Louis County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jun 17, 2018, 1:01 PM CDT for Aitkin County, Carlton County, Saint Louis County, Minnesota. It was in force for 29 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 17, 2018, 1:01 PM CDT (18:01 UTC)
Expired
Jun 17, 2018, 1:30 PM CDT
In force
29 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
70.0 mph

Counties Aitkin County, MN, Carlton County, MN, Saint Louis County, MN

The radar

The Duluth radar (KDLH), 50 km from the middle of the area, began a volume at 18:04 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
Jun 17, 12:34 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

International Fa, MN (KINL), launched 12:00Z, 6.0 hours before the alert went out and 185 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, International Fa, MN at 12:00Z on 2018-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, International Fa, MN at 12:00Z on 2018-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
572 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
118 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 Jun 17, 12:50 PM CDT, 11 minutes earlier.

Area forecast discussion, Jun 17, 12:50 PM CDT, 11 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>
Hazardous weather outlook, Jun 17, 12:11 PM CDT, 50 minutes before
Hazardous Weather Outlook
National Weather Service Duluth MN
1211 PM CDT Sun Jun 17 2018

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-181100-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
1211 PM CDT Sun Jun 17 2018

This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.

.DAY ONE...This afternoon and Tonight

The potential for flooding and severe thunderstorms will continue
across the Northland today and tonight.

A Flash Flood Watch remains in effect for northwest Wisconsin and
parts of northern Minnesota. Thunderstorms will be on the increase
through the afternoon and evening and decrease later tonight.
Heavy rain will again be possible, especially across the already
hard hit areas of northwest Wisconsin.

Severe thunderstorms will also be possible this afternoon through
the evening, especially in an area from east central Minnesota
into northern Wisconsin. Large hail, damaging winds, and a tornado
will all be possible.

Flash Flood watches and Flood warnings are in effect for portions
of the Northland.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible across northwest Wisconsin on Monday
morning. Thunderstorms will again be possible from Friday into
Sunday.

.SPOTTER INFORMATION STATEMENT...

Skywarn Spotters may be needed this afternoon into the evening.

LSZ121-140>148-181100-
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-
1211 PM CDT Sun Jun 17 2018

This Hazardous Weather Outlook is for portions of the Nearshore
waters of western Lake Superior.

.DAY ONE...This afternoon and Tonight

Thunderstorms are possible this morning and again this afternoon
and tonight. Some storms may be strong to severe with large hail,
gusty winds, and frequent lightning.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The probability for widespread hazardous weather is low.

Melde

More information may be obtained at the following web address:
http://www.weather.gov/duluth (all lower case)

In the hours before

Special weather statement, Jun 17, 11:36 AM CDT, 1 hour 25 minutes before
Special Weather Statement
National Weather Service Duluth MN
1136 AM CDT SUN JUN 17 2018

MNZ033>036-171645-
Northern Aitkin-Crow Wing-South Cass-South Aitkin-
1136 AM CDT SUN JUN 17 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WEST CENTRAL AITKIN...
SOUTHWESTERN CASS AND CROW WING COUNTIES...

At 1135 AM CDT, strong thunderstorms were along a line extending from
near Emily, to near Nisswa, to Motley, and moving east at 35 mph.

Wind gusts up to 40 mph, half-inch hail, heavy downpours, and
occasional cloud to ground lightning can be expected with these
storms.

Locations impacted include...
Brainerd, Baxter, Crosby, Breezy Point, Aitkin, Pequot Lakes,
Crosslake, Nisswa, Emily, Ironton, Deerwood, Pillager, Fifty Lakes,
Cuyuna, Palisade, Gull Lake, Merrifield, Saint Mathias, Cedar Lake,
and Sylvan.

Seek shelter inside a sturdy building and away from windows until
these storms pass. Get off area lakes and seek shelter on shore in a
sturdy shelter or a hard-topped vehicle.

LAT...LON 4655 9456 4680 9402 4681 9332 4650 9373
      4620 9429 4621 9439 4624 9439 4628 9434
      4629 9435 4633 9441 4633 9446 4630 9454
      4633 9460 4633 9462 4636 9467 4635 9472
      4638 9473 4639 9475
TIME...MOT...LOC 1635Z 263DEG 32KT 4673 9394 4655 9428 4631 9466

LE
Special weather statement, Jun 17, 11:57 AM CDT, 1 hour 4 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 17, 12:18 PM CDT, 43 minutes before
Special Weather Statement
National Weather Service Duluth MN
1218 PM CDT SUN JUN 17 2018

MNZ034>036-171730-
Northern Aitkin-Crow Wing-South Aitkin-
1218 PM CDT SUN JUN 17 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN AITKIN AND
NORTHEASTERN CROW WING COUNTIES...

At 1218 PM CDT, a strong thunderstorm was 7 miles north of Aitkin, or
21 miles west of Big Sandy Lake, moving east at 35 mph.

Wind gusts up to 40 mph, nickel-size hail, heavy downpours, and
occasional cloud to ground lightning can be expected with this storm.

Locations impacted include...
Palisade, Waukenabo, Kimberly, Hassman, Gun Lake, Bain, Esquagamah
Lake, and Waldeck.

This storm may intensify, please monitor local media outlets for
additional information and possible warnings from the National
Weather Service.

LAT...LON 4673 9381 4686 9342 4651 9337 4659 9382
TIME...MOT...LOC 1718Z 268DEG 30KT 4664 9370

LE
Special weather statement, Jun 17, 12:33 PM CDT, 28 minutes before
Special Weather Statement
National Weather Service Duluth MN
1233 PM CDT SUN JUN 17 2018

MNZ033-034-171745-
Crow Wing-South Cass-
1233 PM CDT SUN JUN 17 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN CASS AND
CENTRAL CROW WING COUNTIES...

At 1232 PM CDT, strong thunderstorms were along a line extending from
near Pequot Lakes, to 7 miles south of Motley, and moving east at 35
mph.

Wind gusts up to 40 mph, dime-size hail, heavy downpours, and
occasional cloud to ground lightning can be expected with these
storms.

Locations impacted include...
Brainerd, Baxter, Crosby, Breezy Point, Pequot Lakes, Crosslake,
Nisswa, Ironton, Pillager, Fort Ripley, Gull Lake, Merrifield, Saint
Mathias, Sylvan, Lake Shore, East Gull Lake, Mission, St. Mathias,
Jenkins, and Wolford.

Seek shelter inside a sturdy building and away from windows until
these storms pass. Get off area lakes and seek shelter on shore in a
sturdy shelter or a hard-topped vehicle.

LAT...LON 4667 9448 4666 9382 4616 9426 4616 9438
      4618 9437 4621 9439 4623 9439 4628 9434
      4629 9435 4630 9439 4633 9441 4633 9446
      4630 9454 4633 9460 4633 9462 4636 9467
      4635 9468 4635 9473
TIME...MOT...LOC 1732Z 252DEG 31KT 4657 9437 4623 9464

LE
Local storm report, Jun 17, 12:38 PM CDT, 23 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 17, 12:43 PM CDT, 18 minutes before
Special Weather Statement
National Weather Service Duluth MN
1243 PM CDT SUN JUN 17 2018

MNZ033-034-171800-
Crow Wing-South Cass-
1243 PM CDT SUN JUN 17 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTH CENTRAL CASS AND
CENTRAL CROW WING COUNTIES...

At 1243 PM CDT, strong thunderstorms were along a line extending
from near Pequot Lakes, to near Pillager, and moving east at 25 mph.

Wind gusts up to 40 mph, half-inch hail, heavy downpours, and
occasional cloud to ground lightning can be expected with these
storms.

Locations impacted include...
Brainerd, Baxter, Crosby, Breezy Point, Pequot Lakes, Crosslake,
Nisswa, Ironton, Deerwood, Pillager, Cuyuna, Fort Ripley, Upper South
Long Lake, South Long Lake, Gull Lake, Merrifield, Saint Mathias,
Sylvan, Lake Shore, and East Gull Lake.

Seek shelter inside a sturdy building and away from windows until
these storms pass. Get off area lakes and seek shelter on shore in a
sturdy shelter or a hard-topped vehicle.

LAT...LON 4664 9433 4663 9378 4615 9416 4616 9437
      4618 9437 4621 9439 4623 9439 4627 9434
      4629 9435 4630 9439 4633 9443 4633 9446
      4630 9453 4632 9458
TIME...MOT...LOC 1742Z 282DEG 23KT 4657 9428 4626 9453

LE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 9:12 PM CDTAreal Flood AdvisoryDLHSaint Louis3 hr
Jun 16, 9:58 PM CDTSpecial Weather StatementDLHCarlton17 min
Jun 16, 10:09 PM CDTSpecial Weather StatementDLHCass36 min
Jun 16, 10:19 PM CDTSpecial Marine WarningDLH41 min
Jun 16, 10:20 PM CDTSpecial Weather StatementDLHAitkin, Carlton10 min
Jun 16, 10:46 PM CDTSpecial Weather StatementDLHAitkin, Carlton, Cass, Crow Wing29 min
Jun 16, 10:50 PM CDTSpecial Weather StatementDLHAitkin, Carlton, Crow Wing25 min
Jun 16, 11:06 PM CDTFlash Flood WarningDLHAitkin, Carlton, Pine5 hr
Jun 16, 11:11 PM CDTFlash Flood WarningDLHCass, Crow Wing4 hr
Jun 16, 11:24 PM CDTSpecial Weather StatementDLHCarlton21 min
Jun 17, 12:11 AM CDTFlash Flood Warning EmergencyDLHCarlton, Pine5 hr
Jun 17, 3:17 AM CDTAreal Flood AdvisoryDLHCass, Crow Wing3 hr
Jun 17, 3:59 AM CDTAreal Flood WarningDLHAitkin, Carlton, Pine3 hr
Jun 17, 5:02 AM CDTAreal Flood WarningDLHCarlton, Pine48 hr
Jun 17, 7:28 AM CDTAreal Flood WarningDLHAitkin, Carlton, Pine4 days
Jun 17, 11:36 AM CDTSpecial Weather StatementDLHCrow Wing9 min
Jun 17, 11:57 AM CDTSpecial Weather StatementDLHCrow Wing18 min
Jun 17, 12:18 PM CDTSpecial Weather StatementDLHAitkin12 min
Jun 17, 12:30 PM CDTSevere Thunderstorm WarningDLHAitkin, Carlton30 min
Jun 17, 12:33 PM CDTSpecial Weather StatementDLHCrow Wing12 min
Jun 17, 12:43 PM CDTSpecial Weather StatementDLHCrow Wing17 min
Jun 17, 1:09 PM CDTSevere Thunderstorm WarningDLHAitkin, Cass, Crow Wing36 min
Jun 17, 1:32 PM CDTSevere Thunderstorm WarningDLHCarlton, Saint Louis43 min
Jun 17, 1:46 PM CDTSpecial Weather StatementDLHAitkin14 min
Jun 17, 1:47 PM CDTSpecial Weather StatementDLH13 min
Jun 17, 1:53 PM CDTSpecial Marine WarningDLH67 min
Jun 17, 1:53 PM CDTSevere Thunderstorm WarningDLHSaint Louis22 min
Jun 17, 2:05 PM CDTSevere Thunderstorm WarningDLHAitkin, Carlton, Pine25 min
Jun 17, 2:16 PM CDTSevere Thunderstorm WarningDLHCarlton, Saint Louis29 min
Jun 17, 2:23 PM CDTSpecial Weather StatementDLHLake22 min
Jun 17, 2:25 PM CDTSevere Thunderstorm WarningDLHCarlton, Saint Louis35 min
Jun 17, 2:29 PM CDTSevere Thunderstorm WarningDLHCarlton, Pine31 min
Jun 17, 2:41 PM CDTAreal Flood AdvisoryDLHSaint Louis2 hr
Jun 17, 2:51 PM CDTAreal Flood AdvisoryDLHLake, Saint Louis114 min
Jun 17, 3:00 PM CDTSpecial Marine WarningDLH60 min
Jun 17, 3:01 PM CDTSevere Thunderstorm WarningDLHPine44 min
Jun 17, 3:31 PM CDTSpecial Marine WarningDLH79 min
Jun 16, 8:41 PM CDTSpecial Weather StatementDLHBurnett19 min
Jun 16, 8:59 PM CDTSpecial Weather StatementDLHDouglas16 min
Jun 16, 9:22 PM CDTSevere Thunderstorm WarningDLHBurnett, Douglas, Washburn23 min
Jun 16, 10:02 PM CDTSevere Thunderstorm WarningDLHBurnett, Douglas, Washburn28 min
Jun 16, 10:25 PM CDTSpecial Weather StatementDLHAshland20 min
Jun 16, 10:39 PM CDTFlash Flood WarningDLHAshland, Bayfield, Burnett, Douglas, Iron, Sawyer and 1 more8 hr
Jun 16, 11:46 PM CDTFlash Flood Warning EmergencyDLHBayfield5 hr
Jun 17, 4:33 AM CDTAreal Flood WarningDLHBurnett, Price, Sawyer, Washburn3 hr
Jun 17, 6:27 AM CDTAreal Flood WarningDLHAshland, Bayfield, Douglas48 hr
Jun 17, 2:53 PM CDTSevere Thunderstorm WarningDLHDouglas22 min
Jun 17, 3:17 PM CDTSpecial Weather StatementDLHBayfield13 min
Jun 17, 3:36 PM CDTSevere Thunderstorm WarningDLHBayfield, Douglas, Sawyer, Washburn24 min
Jun 17, 3:39 PM CDTSpecial Weather StatementDLHBayfield21 min
Jun 17, 3:42 PM CDTSevere Thunderstorm WarningDLHBurnett, Washburn33 min
Jun 17, 3:47 PM CDTFlash Flood WarningDLHBayfield, Douglas3 hr
Jun 17, 3:57 PM CDTSevere Thunderstorm WarningDLHAshland, Bayfield, Iron, Price, Sawyer78 min
Jun 17, 4:14 PM CDTSevere Thunderstorm WarningDLHSawyer, Washburn31 min
Jun 17, 4:22 PM CDTSpecial Weather StatementDLHBurnett23 min
Jun 17, 4:23 PM CDTFlash Flood WarningDLHAshland, Bayfield, Iron3 hr
Jun 17, 4:34 PM CDTSpecial Weather StatementDLHSawyer11 min
Jun 17, 4:48 PM CDTSpecial Weather StatementDLHSawyer, Washburn27 min
Jun 17, 4:59 PM CDTAreal Flood AdvisoryDLHBayfield, Sawyer3 hr
Jun 17, 5:02 PM CDTSpecial Weather StatementDLHPrice13 min
Jun 17, 5:15 PM CDTSpecial Weather StatementDLHSawyer30 min
Jun 17, 5:17 PM CDTSpecial Weather StatementDLHIron28 min
Jun 17, 5:43 PM CDTSpecial Weather StatementDLHPrice17 min
Jun 17, 6:03 PM CDTSpecial Weather StatementDLHPrice12 min
Jun 17, 6:17 PM CDTSpecial Weather StatementDLHPrice13 min
Jun 17, 6:33 PM CDTSpecial Weather StatementDLHPrice12 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2018Every severe thunderstorm warning in 2018

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.