Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 76, NWS Milwaukee, WI

August 16, 2016Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 16, 2016, 11:05 PM CDT for Sauk County, Wisconsin. It was in force for 25 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
Aug 16, 2016, 11:05 PM CDT (04:05 UTC)
Expired
Aug 16, 2016, 11:30 PM CDT
In force
25 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), 107 km from the middle of the area, began a volume at 04:09 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 00:00Z, 4.1 hours before the alert went out and 178 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 2016-08-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 joules per kilogram.LCLLFCEL10008507005003002001001 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 2016-08-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
634 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
1440 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
77 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

481 
WUUS53 KMKX 170405
SVRMKX
WIC111-170430-
/O.NEW.KMKX.SV.W.0076.160817T0405Z-160817T0430Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1105 PM CDT TUE AUG 16 2016

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN SAUK COUNTY IN SOUTH CENTRAL WISCONSIN...

* UNTIL 1130 PM CDT

* AT 1104 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  WONEWOC...OR 9 MILES NORTHWEST OF REEDSBURG...MOVING EAST AT 60
  MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  BARABOO...REEDSBURG...WISCONSIN DELLS...LAKE DELTON...
  WEST BARABOO...NORTH FREEDOM...MERRIMAC...LA VALLE...
  ROCK SPRINGS...IRONTON AND DEVILS LAKE ST PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4364 9025 4364 8979 4360 8976 4360 8972
      4357 8973 4356 8960 4338 8960 4337 8961
      4352 9019 4356 9020 4356 9028
TIME...MOT...LOC 0404Z 284DEG 52KT 4361 9016 

HAIL...0.75IN
WIND...60MPH
 
$$

MBK
2 follow-up statements
720 
WWUS53 KMKX 170420
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1120 PM CDT TUE AUG 16 2016

WIC111-170430-
/O.CON.KMKX.SV.W.0076.000000T0000Z-160817T0430Z/
SAUK WI-
1120 PM CDT TUE AUG 16 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1130 PM CDT
FOR NORTHERN SAUK COUNTY...

AT 1119 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR REEDSBURG...
MOVING EAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING...AND TREES. 

LOCATIONS IMPACTED INCLUDE...
BARABOO...REEDSBURG...WISCONSIN DELLS...LAKE DELTON...WEST BARABOO...
NORTH FREEDOM...MERRIMAC...LA VALLE...ROCK SPRINGS...
IRONTON AND DEVILS LAKE ST PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL AND DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND
LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY.
LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...IF YOU CAN
HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

&&

LAT...LON 4364 9025 4364 8979 4360 8976 4360 8972
      4357 8973 4356 8960 4338 8960 4337 8961
      4352 9019 4356 9020 4356 9028
TIME...MOT...LOC 0419Z 288DEG 31KT 4359 9008 

HAIL...0.75IN
WIND...60MPH
 
$$

MBK
421 
WWUS53 KMKX 170430
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1130 PM CDT TUE AUG 16 2016

WIC111-170440-
/O.EXP.KMKX.SV.W.0076.000000T0000Z-160817T0430Z/
SAUK WI-
1130 PM CDT TUE AUG 16 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SAUK COUNTY HAS
EXPIRED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.  HOWEVER GUSTY
WINDS TO 50 MPH  ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4364 9025 4364 8979 4360 8976 4360 8972
      4357 8973 4356 8960 4338 8960 4337 8961
      4352 9019 4356 9020 4356 9028
TIME...MOT...LOC 0428Z 284DEG 52KT 4359 9008 

$$

MBK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 16, 10:30 PM CDTSpecial Weather StatementMKXColumbia, Green Lake, Marquette, Sauk90 min
Aug 16, 11:35 PM CDTSpecial Weather StatementMKXMarquette, Sauk55 min
Aug 17, 1:31 AM CDTSpecial Weather StatementMKXDane, Sauk44 min
Aug 17, 2:11 AM CDTSpecial Weather StatementMKXDane49 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.