Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 21, NWS Milwaukee, WI

May 12, 20145 counties in Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at May 12, 2014, 10:05 AM CDT for 5 counties in 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: May 12, 2014, 10:05 AM CDT (15:05 UTC)
Expired: May 12, 2014, 10:30 AM CDT
In force: 25 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Columbia County, WI, Dane County, WI, Green County, WI, Rock County, WI, Sauk County, WI

The radar

The Milwaukee radar (KMKX), 82 km from the middle of the area, began a volume at 15:08 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.

Issued	Product	Office	Lasted
May 12, 10:02 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 3.1 hours before the alert went out and 183 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: 850 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 666 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 223 m²/s²
0-3 km storm-relative helicity: 216 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

965 
WUUS53 KMKX 121505
SVRMKX
WIC021-025-045-105-111-121530-
/O.NEW.KMKX.SV.W.0021.140512T1505Z-140512T1530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1005 AM CDT MON MAY 12 2014

THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN ROCK COUNTY IN SOUTH CENTRAL WISCONSIN...
  SOUTHEASTERN SAUK COUNTY IN SOUTH CENTRAL WISCONSIN...
  DANE COUNTY IN SOUTH CENTRAL WISCONSIN...
  GREEN COUNTY IN SOUTH CENTRAL WISCONSIN...
  SOUTHERN COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN...

* UNTIL 1030 AM CDT

* AT 1004 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM NEAR BARABOO TO NEAR CROSS PLAINS TO NEAR ARGYLE...
  MOVING NORTHEAST AT 50 MPH.

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

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  MADISON...SUN PRAIRIE...FITCHBURG...MIDDLETON...STOUGHTON...
  WAUNAKEE...BARABOO...MONROE...VERONA...OREGON...MCFARLAND...
  MONONA...MOUNT HOREB...WINDSOR...EVANSVILLE...PRAIRIE DU SAC...SAUK
  CITY...LAKE WISCONSIN...DEFOREST AND COTTAGE GROVE.

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 THESE STORMS. 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 4320 8984 4319 8986 4347 8990 4356 8904
      4323 8913 4291 8908 4268 8937 4253 8984
TIME...MOT...LOC 1504Z 242DEG 45KT 4349 8967 4306 8962 4263 8983 

HAIL...1.00IN
WIND...60MPH

$$
COLLAR

1 follow-up statement

371 
WWUS53 KMKX 121516
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1016 AM CDT MON MAY 12 2014

WIC021-025-045-105-111-121530-
/O.CON.KMKX.SV.W.0021.000000T0000Z-140512T1530Z/
ROCK WI-SAUK WI-DANE WI-GREEN WI-COLUMBIA WI-
1016 AM CDT MON MAY 12 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT
FOR NORTHWESTERN ROCK...SOUTHEASTERN SAUK...DANE...GREEN AND SOUTHERN
COLUMBIA COUNTIES...

AT 1014 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES WEST OF PORTAGE TO NEAR MIDDLETON TO 6 MILES
SOUTHEAST OF ARGYLE...MOVING NORTHEAST AT 50 MPH.

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

SOURCE...RADAR INDICATED. 

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO 
         ROOFS...SIDING AND TREES. 

LOCATIONS IMPACTED INCLUDE...
MADISON...SUN PRAIRIE...FITCHBURG...MIDDLETON...STOUGHTON...
WAUNAKEE...BARABOO...MONROE...VERONA...OREGON...MCFARLAND...MONONA...
MOUNT HOREB...WINDSOR...EVANSVILLE...PRAIRIE DU SAC...SAUK CITY...
LAKE WISCONSIN...DEFOREST AND COTTAGE GROVE.

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 THESE STORMS. 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 4320 8984 4319 8986 4347 8990 4356 8904
      4323 8913 4291 8908 4268 8937 4253 8984
TIME...MOT...LOC 1514Z 242DEG 45KT 4352 8959 4309 8954 4266 8975 

HAIL...1.00IN
WIND...60MPH

$$

JRW

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 3:08 AM CDT	Special Weather Statement	MKX	Washington	22 min
May 12, 3:15 AM CDT	Special Weather Statement	MKX	Green Lake, Marquette	30 min
May 12, 3:31 AM CDT	Special Weather Statement	MKX	Ozaukee, Washington	29 min
May 12, 3:43 AM CDT	Special Weather Statement	MKX	Fond du Lac	32 min
May 12, 3:44 AM CDT	Special Weather Statement	MKX	Marquette	31 min
May 12, 4:11 AM CDT	Special Weather Statement	MKX	Ozaukee, Sheboygan	34 min
May 12, 4:21 AM CDT	Special Weather Statement	MKX	Columbia	24 min
May 12, 4:55 AM CDT	Special Weather Statement	MKX	Dodge	35 min
May 12, 9:05 AM CDT	Areal Flood Advisory	MKX	Columbia, Iowa, Sauk	3 hr
May 12, 9:14 AM CDT	Dense Fog Advisory	MKX	Sheboygan	4 hr
May 12, 9:33 AM CDT	Special Weather Statement	MKX	Lafayette, Sauk	42 min
May 12, 9:37 AM CDT	Marine Dense Fog Advisory	MKX		12 hr
May 12, 10:01 AM CDT	Special Weather Statement	MKX	Columbia, Dane, Green	29 min
May 12, 10:31 AM CDT	Severe Thunderstorm Warning	MKX	Columbia, Dane, Dodge, Green, Jefferson, Rock	44 min
May 12, 11:02 AM CDT	Severe Thunderstorm Warning	MKX	Dodge, Fond du Lac, Jefferson, Sheboygan, Washington, Waukesha	73 min
May 12, 11:07 AM CDT	Special Marine Warning	MKX		113 min
May 12, 11:50 AM CDT	Severe Thunderstorm Warning	MKX	Ozaukee	40 min
May 12, 12:13 PM CDT	Special Weather Statement	MKX	Jefferson	32 min
May 12, 12:16 PM CDT	Areal Flood Advisory	MKX	Dane, Dodge, Jefferson, Milwaukee, Ozaukee, Rock and 4 more	3 hr
May 12, 12:30 PM CDT	Flash Flood Warning	MKX	Jefferson, Milwaukee, Ozaukee, Walworth, Washington, Waukesha	3 hr
May 12, 12:51 PM CDT	Special Marine Warning	MKX		84 min
May 12, 3:07 PM CDT	Severe Thunderstorm Warning	MKX	Rock, Walworth	38 min
May 12, 3:34 PM CDT	Severe Thunderstorm Warning	MKX	Rock, Walworth	41 min
May 12, 3:57 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Rock, Walworth, Waukesha	63 min
May 12, 3:58 PM CDT	Severe Thunderstorm Warning	MKX	Walworth	47 min
May 12, 4:16 PM CDT	Severe Thunderstorm Warning	MKX	Dane, Dodge, Jefferson	44 min
May 12, 4:37 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Walworth	23 min
May 12, 4:45 PM CDT	Tornado Warning	MKX	Kenosha, Racine, Walworth	45 min
May 12, 4:57 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Waukesha	33 min
May 12, 5:04 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine, Walworth	26 min
May 12, 5:09 PM CDT	Special Marine Warning	MKX		96 min
May 12, 5:14 PM CDT	Severe Thunderstorm Warning	MKX	Kenosha, Racine	46 min
May 12, 5:55 PM CDT	Special Weather Statement	MKX	Kenosha, Racine	50 min
May 12, 6:16 PM CDT	Special Weather Statement	MKX	Jefferson	29 min
May 12, 6:18 PM CDT	Special Weather Statement	MKX	Waukesha	27 min
May 12, 6:28 PM CDT	Areal Flood Advisory	MKX	Dane, Dodge, Green, Jefferson, Rock, Waukesha	2 hr
May 12, 6:42 PM CDT	Severe Thunderstorm Warning	MKX	Jefferson, Walworth, Waukesha	33 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2014 Every severe thunderstorm warning in 2014

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.