Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 147, NWS Duluth, MN

August 10, 2016Ashland County, Iron County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Aug 10, 2016, 10:14 AM CDT for Ashland County, Iron 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
Aug 10, 2016, 10:14 AM CDT (15:14 UTC)
Expired
Aug 10, 2016, 11:00 AM CDT
In force
46 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Ashland County, WI, Iron County, WI

The radar

The Duluth radar (KDLH), 139 km from the middle of the area, began a volume at 15:17 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

Green Bay/Straub, WI (KGRB), launched 12:00Z, 3.2 hours before the alert went out and 285 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, Green Bay/Straub, WI at 12:00Z on 2016-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 714 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, Green Bay/Straub, WI at 12:00Z on 2016-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.1939Sfc1 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
714 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
831 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
55 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 Aug 10, 7:06 AM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, Aug 10, 7:06 AM CDT, 3 hours 8 minutes before
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Hazardous weather outlook, Aug 10, 5:03 AM CDT, 5 hours 11 minutes before
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In the hours before

Special weather statement, Aug 10, 6:02 AM CDT, 4 hours 12 minutes before
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Special weather statement, Aug 10, 6:17 AM CDT, 3 hours 57 minutes before
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Special weather statement, Aug 10, 6:31 AM CDT, 3 hours 43 minutes before
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Special weather statement, Aug 10, 7:00 AM CDT, 3 hours 14 minutes before
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Special weather statement, Aug 10, 7:32 AM CDT, 2 hours 42 minutes before
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Special weather statement, Aug 10, 9:01 AM CDT, 1 hour 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
901 AM CDT WED AUG 10 2016

WIZ001-002-006>008-101430-
DOUGLAS-WASHBURN-SAWYER-BAYFIELD-BURNETT-
901 AM CDT WED AUG 10 2016

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN SAWYER...
NORTHEASTERN BURNETT...SOUTHWESTERN BAYFIELD...EASTERN DOUGLAS AND
NORTHERN WASHBURN COUNTIES...

AT 901 AM CDT...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
MAPLE...TO 7 MILES SOUTHEAST OF WEBB LAKE WISCONSIN...AND MOVING EAST
AT 45 MPH.

WIND GUSTS UP TO 45 MPH...PEA SIZE HAIL...TORRENTIAL RAINFALL...AND
OCCASIONAL CLOUD TO GROUND LIGHTNING CAN BE EXPECTED WITH THESE
STORMS.

THESE STORMS WILL BE NEAR...
  LAKE NEBAGAMON...MAPLE AND POPLAR IN DOUGLAS COUNTY AROUND 905 AM
  CDT.
  BRULE AND OULU AROUND 915 AM CDT.
  IRON RIVER AROUND 920 AM CDT.
  HAYWARD...STONE LAKE AND INO AROUND 930 AM CDT.

OTHER LOCATIONS IMPACTED BY THESE STORMS INCLUDE TOTAGATIC LAKE...
MIDDLE EAU CLAIRE LAKE...NORTHWOODS BEACH...SPRINGBROOK...LAMPSON...
WENTWORTH...BIRCH ISLAND LAKE...TOTAGATIC FLOWAGE...MCKENZIE LAKE AND
EARL.

SEEK SHELTER INSIDE A STURDY BUILDING AND AWAY FROM WINDOWS UNTIL
THESE STORMS PASS.

LAT...LON 4664 9187 4668 9106 4585 9142 4585 9223
TIME...MOT...LOC 1401Z 268DEG 37KT 4659 9173 4593 9201

DAP

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 9:30 PM CDTSmall Craft AdvisoryDLH49 hr
Aug 10, 4:19 AM CDTSpecial Weather StatementDLHCrow Wing26 min
Aug 10, 4:34 AM CDTBeach Hazards StatementDLHCarlton, Saint Louis16 hr
Aug 10, 4:56 AM CDTSpecial Weather StatementDLHCrow Wing19 min
Aug 10, 5:15 AM CDTSpecial Weather StatementDLHCass15 min
Aug 10, 5:38 AM CDTSpecial Weather StatementDLHCass22 min
Aug 10, 6:02 AM CDTSpecial Weather StatementDLHCrow Wing13 min
Aug 10, 6:17 AM CDTSpecial Weather StatementDLHCrow Wing13 min
Aug 10, 6:31 AM CDTSpecial Weather StatementDLHAitkin, Crow Wing29 min
Aug 10, 7:00 AM CDTSpecial Weather StatementDLHAitkin, Carlton, Pine30 min
Aug 10, 7:32 AM CDTSpecial Weather StatementDLHCarlton, Pine28 min
Aug 10, 9:48 AM CDTSpecial Marine WarningDLH42 min
Aug 10, 11:42 AM CDTFlash Flood WatchDLHAitkin, Carlton, Cass, Crow Wing, Itasca, Pine and 1 more18 hr
Aug 10, 3:44 PM CDTSpecial Weather StatementDLHWadena31 min
Aug 10, 4:04 PM CDTSpecial Weather StatementDLHCass26 min
Aug 10, 4:21 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing39 min
Aug 10, 4:33 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing42 min
Aug 10, 4:59 PM CDTSpecial Weather StatementDLHCrow Wing31 min
Aug 10, 5:28 PM CDTSpecial Weather StatementDLHCrow Wing32 min
Aug 10, 6:20 PM CDTSpecial Weather StatementDLHLake25 min
Aug 10, 6:33 PM CDTSevere Thunderstorm WarningDLHPine42 min
Aug 10, 6:41 PM CDTAreal Flood AdvisoryDLHLake3 hr
Aug 10, 9:01 AM CDTSpecial Weather StatementDLHBayfield, Douglas, Washburn29 min
Aug 10, 9:38 AM CDTSevere Thunderstorm WarningDLHAshland, Bayfield37 min
Aug 10, 10:55 AM CDTSevere Thunderstorm WarningDLHIron16 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2016Every severe thunderstorm warning in 2016

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.