Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 4, NWS Milwaukee, WI

March 6, 2017Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Mar 6, 2017, 9:40 PM CST for Sauk County, Wisconsin. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 6, 2017, 9:40 PM CST (03:40 UTC)
Expired
Mar 6, 2017, 10:30 PM CST
In force
50 min
Issued by
NWS Milwaukee, WI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Sauk County, WI

The radar

The La Crosse radar (KARX), 108 km from the middle of the area, began a volume at 03:44 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
Mar 6, 7:42 PM CSTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 3.7 hours before the alert went out and 189 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 00:00Z on 2017-03-07Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2017-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 441 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
522 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
441 m²/s²
0-3 km storm-relative helicity
425 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

994 
WUUS53 KMKX 070340
SVRMKX
WIC111-070430-
/O.NEW.KMKX.SV.W.0004.170307T0340Z-170307T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Milwaukee/Sullivan WI
940 PM CST MON MAR 6 2017

The National Weather Service in Milwaukee/Sullivan has issued a

* Severe Thunderstorm Warning for...
  Sauk County in south central Wisconsin...

* Until 1030 PM CST

* At 940 PM CST, severe thunderstorms were located along a line
  extending from near Hillsboro to near Boscobel, moving northeast at
  50 mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Baraboo, Reedsburg, Wisconsin Dells, Lake Delton, Spring Green,
  West Baraboo, Plain, North Freedom, La Valle, Rock Springs,
  Loganville, Ironton, Lime Ridge, Leland, Devils Lake St Park and
  Hill Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4364 9031 4364 8979 4360 8976 4360 8972
      4357 8973 4357 8970 4325 8976 4324 8981
      4319 8986 4320 8999 4317 9005 4316 9019
      4355 9019 4356 9031
TIME...MOT...LOC 0340Z 245DEG 46KT 4368 9042 4315 9079 

HAIL...<.75IN
WIND...60MPH
 
$$

BSH
3 follow-up statements
112 
WWUS53 KMKX 070351
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
951 PM CST MON MAR 6 2017

WIC111-070430-
/O.CON.KMKX.SV.W.0004.000000T0000Z-170307T0430Z/
Sauk WI-
951 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CST
FOR SAUK COUNTY...

At 950 PM CST, severe thunderstorms were located along a line 
extending from Elroy to near Boscobel, moving northeast at 55 mph. 
At 925 PM CST, a 60 MPH wind gust was reported in La Farge with this 
storm.

HAZARD...60 mph wind gusts. 

SOURCE...Law enforcement. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Baraboo, Reedsburg, Wisconsin Dells, Lake Delton, Spring Green, West
Baraboo, Plain, North Freedom, La Valle, Rock Springs, Loganville,
Ironton, Lime Ridge, Leland, Devils Lake St Park and Hill Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4364 9031 4364 8979 4360 8976 4360 8972
      4357 8973 4357 8970 4325 8976 4324 8981
      4319 8986 4320 8999 4317 9005 4316 9019
      4355 9019 4356 9031
TIME...MOT...LOC 0350Z 245DEG 46KT 4373 9026 4320 9063 

HAIL...<.75IN
WIND...60MPH
 
$$

SPM
068 
WWUS53 KMKX 070401
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1001 PM CST MON MAR 6 2017

WIC111-070430-
/O.CON.KMKX.SV.W.0004.000000T0000Z-170307T0430Z/
Sauk WI-
1001 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CST
FOR SAUK COUNTY...

At 1000 PM CST, severe thunderstorms were located along a line
extending from near Mauston to near Muscoda, moving northeast at 55 
mph. A 60 MPH wind gust was reported with these storms earlier in La 
Farge.

HAZARD...60 mph wind gusts. 

SOURCE...Law enforcement. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Baraboo, Reedsburg, Wisconsin Dells, Lake Delton, Spring Green, West
Baraboo, Plain, North Freedom, La Valle, Rock Springs, Loganville,
Ironton, Lime Ridge, Leland, Devils Lake St Park and Hill Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4364 9031 4364 8979 4360 8976 4360 8972
      4357 8973 4357 8970 4325 8976 4324 8981
      4319 8986 4320 8999 4317 9005 4316 9019
      4355 9019 4356 9031
TIME...MOT...LOC 0400Z 245DEG 46KT 4378 9011 4325 9048 

HAIL...<.75IN
WIND...60MPH
 
$$

SPM
364 
WWUS53 KMKX 070411
SVSMKX

Severe Weather Statement
National Weather Service Milwaukee/Sullivan WI
1011 PM CST MON MAR 6 2017

WIC111-070430-
/O.CON.KMKX.SV.W.0004.000000T0000Z-170307T0430Z/
Sauk WI-
1011 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM CST
FOR SAUK COUNTY...

At 1011 PM CST, severe thunderstorms were located along a line
extending from 6 miles east of Mauston to near Richland Center, 
moving northeast at 55 mph. A 60 MPH wind gust was reported with 
these storms earlier in La Farge.

HAZARD...60 mph wind gusts. 

SOURCE...Law enforcement. 

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Baraboo, Reedsburg, Wisconsin Dells, Lake Delton, Spring Green, West
Baraboo, Plain, North Freedom, La Valle, Rock Springs, Loganville,
Ironton, Lime Ridge, Leland, Devils Lake St Park and Hill Point.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4364 9031 4364 8979 4360 8976 4360 8972
      4357 8973 4357 8970 4325 8976 4324 8981
      4319 8986 4320 8999 4317 9005 4316 9019
      4355 9019 4356 9031
TIME...MOT...LOC 0411Z 245DEG 46KT 4383 8995 4330 9033 

HAIL...<.75IN
WIND...60MPH
 
$$

SPM

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 6, 9:45 PM CSTSevere Thunderstorm WarningMKXIowa45 min
Mar 6, 10:00 PM CSTSevere Thunderstorm WarningMKXLafayette45 min
Mar 6, 10:28 PM CSTSevere Thunderstorm WarningMKXColumbia, Marquette, Sauk47 min
Mar 6, 10:28 PM CSTSevere Thunderstorm WarningMKXIowa17 min
Mar 6, 10:42 PM CSTSevere Thunderstorm WarningMKXDane, Green, Iowa, Lafayette33 min
Mar 6, 10:57 PM CSTSevere Thunderstorm WarningMKXDane, Iowa18 min
Mar 6, 11:08 PM CSTSevere Thunderstorm WarningMKXColumbia, Green Lake, Marquette, Sauk28 min
Mar 6, 11:13 PM CSTSevere Thunderstorm WarningMKXDane, Green, Lafayette, Rock47 min
Mar 6, 11:28 PM CSTSpecial Weather StatementMKXColumbia, Sauk47 min
Mar 6, 11:30 PM CSTSevere Thunderstorm WarningMKXRock30 min
Mar 6, 11:40 PM CSTSpecial Weather StatementMKXGreen Lake, Marquette50 min
Mar 6, 11:46 PM CSTSpecial Weather StatementMKXDodge, Fond du Lac29 min
Mar 6, 11:48 PM CSTSevere Thunderstorm WarningMKXJefferson, Rock, Walworth27 min
Mar 7, 12:09 AM CSTSpecial Weather StatementMKXJefferson, Walworth51 min
Mar 7, 12:19 AM CSTSpecial Weather StatementMKXDodge, Fond du Lac, Ozaukee, Sheboygan, Washington71 min
Mar 7, 12:28 AM CSTSevere Thunderstorm WarningMKXKenosha, Milwaukee, Racine, Walworth, Waukesha47 min
Mar 7, 12:30 AM CSTSevere Thunderstorm WarningMKXFond du Lac, Ozaukee, Sheboygan, Washington45 min
Mar 7, 12:37 AM CSTSpecial Marine WarningMKX53 min
Mar 7, 5:42 PM CSTSpecial Weather StatementMKXColumbia, Dane, Dodge, Green, Iowa, Lafayette33 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2017Every severe thunderstorm warning in 2017

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.