Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 33, NWS Duluth, MN

June 20, 2013Pine County, Minnesota; Burnett County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Jun 20, 2013, 5:44 PM CDT for Pine County, Minnesota; Burnett County, Wisconsin. It was in force for 46 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 20, 2013, 5:44 PM CDT (22:44 UTC)
Expired: Jun 20, 2013, 6:30 PM CDT
In force: 46 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Pine County, MN, Burnett County, WI

The radar

The Duluth radar (KDLH), 98 km from the middle of the area, began a volume at 22:46 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

Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 151 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: 351 J/kg
Mixed-layer CIN: -114 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 20, 3:18 PM CDT, 2 hours 26 minutes earlier.

Area forecast discussion, Jun 20, 3:18 PM CDT, 2 hours 26 minutes before

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Hazardous weather outlook, Jun 20, 1:45 PM CDT, 3 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE DULUTH MN
145 PM CDT THU JUN 20 2013

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-211130-
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-
145 PM CDT THU JUN 20 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

WIDESPREAD SHOWERS AND THUNDERSTORMS WILL PERSIST FOR MUCH OF THIS
AFTERNOON ACROSS NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. A FEW
STORMS MAY BE STRONG OVER NORTHWEST WISCONSIN...PRODUCING PEA TO
NICKEL SIZE HAIL...LIGHTNING...AND WIND GUSTS UP TO 45 MPH.  SOME
LOCALLY HEAVY RAINFALL IS ALSO POSSIBLE.

A MORE ORGANIZED THREAT OF SEVERE THUNDERSTORMS IS EXPECTED FROM
LATER THIS EVENING THROUGH THE OVERNIGHT HOURS AS ADDITIONAL STORMS
DEVELOP OVER THE DAKOTAS IN A VERY UNSTABLE ATMOSPHERE AND THEN MOVE
EAST-SOUTHEAST ACROSS MINNESOTA.  THE GREATEST RISK OF SEVERE
WEATHER WILL BE ACROSS THE SOUTHWEST PART OF THE NWS DULUTH COUNTY
WARNING AREA...ROUGHLY SOUTH OF HIGHWAY 2 IN MINNESOTA...AND WEST OF
HIGHWAY 53 IN NORTHWEST WISCONSIN...AND IN PARTICULAR THE BRAINERD
LAKES AND WALKER REGIONS.  THE PRIMARY THREAT WILL BE DAMAGING
THUNDERSTORM WINDS UP TO 70 MPH...AND HAIL UP TO THE SIZE OF GOLF
BALLS.  THE TORNADO THREAT...WHILE NON-ZERO...APPEARS TO BE VERY
LOW. ADDITIONAL HEAVY RAINFALL AND LOCAL FLOODING IS ALSO POSSIBLE.

ANYONE WITH OUTDOOR PLANS TONIGHT...ESPECIALLY IN THE
WALKER...BRAINERD AND LAKE MILLE LACS AREAS...IS STRONGLY URGED TO
CLOSELY MONITOR THE LATEST WEATHER INFORMATION AND BE PREPARED FOR
THE POSSIBILITY OF SEVERE THUNDERSTORMS AND HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SEVERAL PERIODS OF THUNDERSTORMS ARE EXPECTED FROM FRIDAY NIGHT INTO
EARLY NEXT WEEK AS WARM...MOIST AND UNSTABLE AIR REMAINS OVER THE
NORTHLAND. AN INITIAL ROUND OF LOCALLY HEAVY RAIN AND STORMS APPEARS
LIKELY FRIDAY NIGHT INTO SATURDAY ACROSS THE ENTIRE AREA. THERE IS A
RISK THAT SOME STORMS WILL BE SEVERE WITH LARGE HAIL AND DAMAGING
WINDS BEING THE PRIMARY THREATS. HEAVY RAINFALL AND THE POTENTIAL
FOR FLASH FLOODING IS ALSO POSSIBLE. ADDITIONAL DETAILS ON THE HEAVY
RAINFALL THREAT CAN BE FOUND IN THE HYDROLOGIC OUTLOOK.

ANYONE WITH OUTDOOR PLANS THROUGH THIS WEEKEND IS STRONGLY URGED TO
CLOSELY MONITOR THE LATEST WEATHER INFORMATION AND BE PREPARED FOR
THE POSSIBILITY OF SEVERE THUNDERSTORMS AND HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION APPEARS LIKELY AT SOME POINT
TONIGHT...AND ALSO THROUGH THE WEEKEND.

LSZ121-140>148-211130-
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-
145 PM CDT THU JUN 20 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

PERIODS OF THUNDERSTORMS ARE EXPECTED OVER WESTERN LAKE SUPERIOR
THIS AFTERNOON AND TONIGHT. SOME STORMS MAY BE STRONG WITH ABRUPT
WINDSHIFTS...LOCALLY HIGHER WAVE HEIGHTS AND HEAVY RAINFALL.

ADDITIONAL AND MORE WIDESPREAD STORMS MAY OCCUR AFTER MIDNIGHT
TONIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

SEVERAL PERIODS OF THUNDERSTORMS ARE EXPECTED FRIDAY INTO EARLY
NEXT WEEK AS INCREASINGLY UNSTABLE AIR REMAINS OVER THE REGION.
IT APPEARS THAT THE GREATEST RISK FOR THUNDERSTORMS OVER WESTERN
LAKE SUPERIOR WILL BE FRIDAY INTO SUNDAY. THERE IS A RISK THAT
SOME STORMS WILL BE SEVERE WITH LIGHTNING...STRONG WINDS...LOCALLY
HIGH WAVE HEIGHTS AND LARGE HAIL.

ANYONE WITH BOATING PLANS ON WESTERN LAKE SUPERIOR THROUGH THIS
WEEKEND IS STRONGLY URGED TO CLOSELY MONITOR THE LATEST WEATHER
INFORMATION AND BE PREPARED FOR THE POSSIBILITY OF SEVERE
THUNDERSTORMS...AND HAVE A PLAN TO QUICKLY SEEK SHELTER ONSHORE OR
IN A SAFE HARBOR.

 MILLER

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 20, 4:13 PM CDT, 1 hour 31 minutes before

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Special weather statement, Jun 20, 4:32 PM CDT, 1 hour 12 minutes before

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Special weather statement, Jun 20, 4:44 PM CDT, 1 hour before

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Special weather statement, Jun 20, 4:50 PM CDT, 54 minutes before

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Special weather statement, Jun 20, 5:10 PM CDT, 34 minutes before

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Special weather statement, Jun 20, 5:44 PM CDT, 0 minutes before

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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 20, 1:15 AM CDT	Special Weather Statement	DLH	Cook	45 min
Jun 20, 2:11 AM CDT	Special Weather Statement	DLH	Cook	34 min
Jun 20, 3:16 AM CDT	Special Weather Statement	DLH	Cook	44 min
Jun 20, 3:19 AM CDT	Special Weather Statement	DLH	Crow Wing	41 min
Jun 20, 4:02 AM CDT	Special Weather Statement	DLH	Cook	43 min
Jun 20, 4:06 AM CDT	Special Weather Statement	DLH	Crow Wing	24 min
Jun 20, 4:41 AM CDT	Special Weather Statement	DLH	Crow Wing	19 min
Jun 20, 5:04 AM CDT	Special Weather Statement	DLH	Crow Wing	26 min
Jun 20, 5:07 AM CDT	Special Weather Statement	DLH	Lake	38 min
Jun 20, 5:39 AM CDT	Special Weather Statement	DLH	Crow Wing	36 min
Jun 20, 6:04 AM CDT	Special Weather Statement	DLH	Cass, Crow Wing	41 min
Jun 20, 6:26 AM CDT	Special Weather Statement	DLH		34 min
Jun 20, 6:48 AM CDT	Special Weather Statement	DLH	Cass, Crow Wing	12 min
Jun 20, 7:14 AM CDT	Special Weather Statement	DLH	Saint Louis	16 min
Jun 20, 7:52 AM CDT	Areal Flood Advisory	DLH	Cass, Crow Wing	6 hr
Jun 20, 10:31 AM CDT	Special Weather Statement	DLH	Lake	14 min
Jun 20, 2:57 PM CDT	Flash Flood Watch	DLH	Aitkin, Carlton, Cass, Crow Wing, Pine, Saint Louis	17 hr
Jun 20, 4:44 PM CDT	Special Weather Statement	DLH	Kanabec	16 min
Jun 20, 4:57 PM CDT	Severe Thunderstorm Warning	DLH	Pine	48 min
Jun 20, 6:01 AM CDT	Special Weather Statement	DLH	Iron	14 min
Jun 20, 6:07 AM CDT	Special Weather Statement	DLH	Price	38 min
Jun 20, 6:23 AM CDT	Special Weather Statement	DLH	Iron	22 min
Jun 20, 9:12 AM CDT	Special Weather Statement	DLH	Ashland	33 min
Jun 20, 9:53 AM CDT	Special Weather Statement	DLH	Ashland	22 min
Jun 20, 12:34 PM CDT	Special Weather Statement	DLH	Douglas	26 min
Jun 20, 1:03 PM CDT	Special Weather Statement	DLH	Douglas	12 min
Jun 20, 1:17 PM CDT	Special Weather Statement	DLH	Douglas	13 min
Jun 20, 1:41 PM CDT	Special Weather Statement	DLH	Douglas	19 min
Jun 20, 4:13 PM CDT	Special Weather Statement	DLH	Iron	17 min
Jun 20, 4:32 PM CDT	Special Weather Statement	DLH	Douglas	13 min
Jun 20, 4:50 PM CDT	Special Weather Statement	DLH	Douglas	25 min
Jun 20, 5:10 PM CDT	Special Weather Statement	DLH	Douglas	35 min
Jun 20, 5:44 PM CDT	Special Weather Statement	DLH	Washburn	16 min
Jun 20, 5:58 PM CDT	Special Weather Statement	DLH	Sawyer	17 min
Jun 20, 6:20 PM CDT	Special Weather Statement	DLH	Douglas, Sawyer, Washburn	25 min
Jun 20, 6:38 PM CDT	Special Weather Statement	DLH	Burnett	22 min
Jun 20, 6:48 PM CDT	Severe Thunderstorm Warning	DLH	Burnett	42 min
Jun 20, 6:49 PM CDT	Special Weather Statement	DLH	Douglas, Sawyer	26 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013 Severe Thunderstorm Warnings in Wisconsin, 2013 Every severe thunderstorm warning in 2013

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.