Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 48, NWS Milwaukee, WI

July 21, 2016Columbia County, Sauk County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jul 21, 2016, 4:34 PM CDT for Columbia County, Sauk County, Wisconsin. It was in force for 56 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 21, 2016, 4:34 PM CDT (21:34 UTC)
Expired: Jul 21, 2016, 5:30 PM CDT
In force: 56 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Columbia County, WI, Sauk County, WI

The radar

The La Crosse radar (KARX), 116 km from the middle of the area, began a volume at 21:37 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.

What was reported inside it

Time	Report	Where	Remark
Jul 21, 5:15 PM CDT	TSTM WND DMG	North Freedom, WI	TREES AND WIRES DOWN, SOME WIRES ON CARS. ALSO TREES AND WIRES DOWN IN SAUK CITY ON HWY 12
Jul 21, 5:15 PM CDT	TSTM WND DMG	North Freedom, WI	TREES AND WIRES DOWN, SOME WIRES ON CARS. ALSO TREES AND WIRES DOWN IN SAUK CITY ON HWY 12.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 21, 4:26 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.6 hours before the alert went out and 191 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: 1904 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 152 m²/s²
0-3 km storm-relative helicity: 154 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

422 
WUUS53 KMKX 212134
SVRMKX
WIC021-111-212230-
/O.NEW.KMKX.SV.W.0048.160721T2134Z-160721T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
434 PM CDT THU JUL 21 2016

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

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

* UNTIL 530 PM CDT

* AT 434 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES SOUTH OF
  MAUSTON...MOVING SOUTHEAST AT 40 MPH.

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

  SOURCE...RADAR INDICATED. 

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

* LOCATIONS IMPACTED INCLUDE...
  BARABOO...REEDSBURG...PRAIRIE DU SAC...SAUK CITY...
  WISCONSIN DELLS...LAKE DELTON...SPRING GREEN...WEST BARABOO...
  PLAIN...NORTH FREEDOM...MERRIMAC...LA VALLE...ROCK SPRINGS...
  LOGANVILLE...IRONTON...LIME RIDGE...LELAND...
  INTERSTATE 90/94 INTERCHANGE...HILL POINT AND DEVILS LAKE ST PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4364 9031 4364 8959 4346 8944 4342 8960
      4338 8960 4336 8967 4332 8972 4327 8972
      4324 8977 4324 8981 4320 8985 4319 8990
      4320 8999 4315 9005 4316 9009 4316 9018
      4355 9019 4356 9031
TIME...MOT...LOC 2134Z 318DEG 33KT 4369 9004 

HAIL...0.88IN
WIND...60MPH
 
$$

SPM

1 follow-up statement

913 
WWUS53 KMKX 212209
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
509 PM CDT THU JUL 21 2016

WIC021-111-212230-
/O.CON.KMKX.SV.W.0048.000000T0000Z-160721T2230Z/
SAUK WI-COLUMBIA WI-
509 PM CDT THU JUL 21 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR SAUK AND WESTERN COLUMBIA COUNTIES...

AT 508 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WEST
BARABOO...
OR NEAR BARABOO...MOVING SOUTHEAST AT 30 MPH.

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

SOURCE...RADAR INDICATED. 

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

LOCATIONS IMPACTED INCLUDE...
BARABOO...REEDSBURG...PRAIRIE DU SAC...SAUK CITY...WISCONSIN
DELLS...LAKE DELTON...SPRING GREEN...WEST BARABOO...PLAIN...NORTH
FREEDOM...MERRIMAC...LA VALLE...ROCK SPRINGS...LOGANVILLE...IRONTON
LIME RIDGE...LELAND...INTERSTATE 90/94 INTERCHANGE...HILL POINT AND
DEVILS LAKE ST PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4364 9031 4364 8959 4346 8944 4342 8960
      4338 8960 4336 8967 4332 8972 4327 8972
      4324 8977 4324 8981 4320 8985 4319 8990
      4320 8999 4315 9005 4316 9009 4316 9018
      4355 9019 4356 9031
TIME...MOT...LOC 2208Z 316DEG 25KT 4351 8982 

HAIL...0.88IN
WIND...60MPH
 
$$

BSH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 8:18 AM CDT	Severe Thunderstorm Warning	MKX	Green Lake, Marquette	57 min
Jul 21, 8:41 AM CDT	Severe Thunderstorm Warning	MKX	Fond du Lac	64 min
Jul 21, 8:49 AM CDT	Severe Thunderstorm Warning	MKX	Marquette	26 min
Jul 21, 9:08 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Green Lake, Marquette	37 min
Jul 21, 9:21 AM CDT	Special Marine Warning	MKX		114 min
Jul 21, 9:28 AM CDT	Special Weather Statement	MKX	Sheboygan	62 min
Jul 21, 9:43 AM CDT	Special Weather Statement	MKX	Columbia, Dodge, Ozaukee, Sheboygan, Washington	32 min
Jul 21, 10:12 AM CDT	Special Weather Statement	MKX	Ozaukee, Waukesha	33 min
Jul 21, 10:46 AM CDT	Special Weather Statement	MKX	Milwaukee, Racine	29 min
Jul 21, 10:49 AM CDT	Special Marine Warning	MKX		86 min
Jul 21, 11:13 AM CDT	Special Weather Statement	MKX	Kenosha, Racine	32 min
Jul 21, 11:42 AM CDT	Heat Advisory	MKX	Dane, Green, Iowa, Jefferson, Kenosha, Lafayette and 6 more	31 hr
Jul 21, 4:15 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Green Lake, Marquette	60 min
Jul 21, 4:50 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Green Lake, Marquette	55 min
Jul 21, 5:13 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dodge, Fond du Lac, Green Lake	62 min
Jul 21, 5:25 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Sauk	65 min
Jul 21, 5:30 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Jefferson, Waukesha	60 min
Jul 21, 5:38 PM CDT	Special Marine Warning	MKX		112 min
Jul 21, 5:48 PM CDT	Special Weather Statement	MKX	Dane	57 min
Jul 21, 5:51 PM CDT	Special Weather Statement	MKX	Washington	54 min
Jul 21, 6:03 PM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Jefferson, Rock	42 min
Jul 21, 6:08 PM CDT	Severe Thunderstorm Warning	MKX	Dodge, Racine, Rock, Walworth, Washington, Waukesha	67 min
Jul 21, 6:15 PM CDT	Severe Thunderstorm Warning	MKX	Dane	45 min
Jul 21, 6:21 PM CDT	Special Weather Statement	MKX	Milwaukee, Ozaukee	54 min
Jul 21, 6:23 PM CDT	Areal Flood Advisory	MKX	Columbia, Dane, Jefferson, Rock, Sauk	3 hr
Jul 21, 6:32 PM CDT	Special Weather Statement	MKX	Rock	58 min
Jul 21, 6:36 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Rock, Walworth	54 min
Jul 21, 6:37 PM CDT	Flash Flood Warning	MKX	Columbia, Dane, Jefferson, Sauk	3 hr
Jul 21, 6:40 PM CDT	Special Weather Statement	MKX	Kenosha, Racine	65 min
Jul 21, 6:47 PM CDT	Areal Flood Advisory	MKX	Sauk	3 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2016 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.