Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 41, NWS Green Bay, WI

June 18, 2012Langlade County, Menominee County, Shawano County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jun 18, 2012, 4:07 PM CDT for Langlade County, Menominee County, Shawano County, Wisconsin. It was in force for 20 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
Jun 18, 2012, 4:07 PM CDT (21:07 UTC)
Expired
Jun 18, 2012, 4:27 PM CDT
In force
20 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Langlade County, WI, Menominee County, WI, Shawano County, WI

The radar

The Green Bay radar (KGRB), 88 km from the middle of the area, began a volume at 21:10 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
Jun 18, 12:24 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.1 hours before the alert went out and 90 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 2012-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 67 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 2012-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 382 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
67 J/kg
Mixed-layer CIN
-387 J/kg
Mixed-layer LCL
1455 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
382 m²/s²
0-3 km storm-relative helicity
524 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

312 
WUUS53 KGRB 182107
SVRGRB
WIC067-078-115-182145-
/O.NEW.KGRB.SV.W.0041.120618T2107Z-120618T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
407 PM CDT MON JUN 18 2012

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN LANGLADE COUNTY IN NORTH CENTRAL WISCONSIN...         
  WESTERN MENOMINEE COUNTY IN NORTHEAST WISCONSIN...NORTHERN SHAWANO 
  COUNTY IN NORTHEAST WISCONSIN...

* UNTIL 445 PM CDT

* AT 401 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 9 MILES
  NORTH OF WITTENBERG...OR 15 MILES SOUTH OF ANTIGO...AND MOVING EAST
  AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEOPIT AROUND 425 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE MATTOON
AND PHLOX.

THIS WARNING REPLACES THE TORNADO WARNING ISSUED EARLIER FOR PARTS 
OF SHAWANO AND MENOMINEE COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP
QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

&&

LAT...LON 4503 8921 4526 8868 4521 8868 4521 8866
      4495 8861 4482 8914
TIME...MOT...LOC 2105Z 256DEG 36KT 4495 8911
WIND...HAIL 60MPH 1.00IN

$$

EB
1 follow-up statement
635 
WWUS53 KGRB 182127
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
427 PM CDT MON JUN 18 2012

WIC067-078-115-182137-
/O.CAN.KGRB.SV.W.0041.000000T0000Z-120618T2145Z/
LANGLADE WI-MENOMINEE WI-SHAWANO WI-
427 PM CDT MON JUN 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORHWEST SHAWANO...WESTERN 
MENOMINEE AND SOUTHERN LANGLADE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 

HOWEVER SMALL HAIL AND GUSTY WINDS ARE STILL POSSIBLE WITH THESE 
THUNDERSTORMS

LAT...LON 4503 8921 4526 8868 4521 8868 4521 8866
      4495 8861 4482 8914
TIME...MOT...LOC 2127Z 256DEG 36KT 4500 8881

$$

EB

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 4:03 AM CDTSpecial Marine WarningGRB87 min
Jun 18, 1:34 PM CDTSevere Thunderstorm WarningGRBLanglade, Lincoln, Oneida56 min
Jun 18, 2:14 PM CDTSevere Thunderstorm WarningGRBLincoln, Marathon46 min
Jun 18, 2:28 PM CDTSevere Thunderstorm WarningGRBForest, Langlade, Lincoln, Oconto47 min
Jun 18, 2:58 PM CDTSevere Thunderstorm WarningGRBMarathon47 min
Jun 18, 3:22 PM CDTTornado WarningGRBMarathon23 min
Jun 18, 3:28 PM CDTSevere Thunderstorm WarningGRBMenominee, Portage, Shawano, Waupaca47 min
Jun 18, 3:41 PM CDTTornado WarningGRBLanglade, Marathon, Menominee, Shawano34 min
Jun 18, 3:44 PM CDTSevere Thunderstorm WarningGRBMarinette31 min
Jun 18, 3:47 PM CDTSpecial Marine WarningGRB88 min
Jun 18, 3:48 PM CDTSevere Thunderstorm WarningGRBMarathon, Shawano42 min
Jun 18, 3:55 PM CDTSevere Thunderstorm WarningGRBOutagamie, Portage, Shawano, Waupaca41 min
Jun 18, 3:58 PM CDTSevere Thunderstorm WarningGRBMarinette, Oconto47 min
Jun 18, 4:19 PM CDTTornado WarningGRBMarinette, Oconto26 min
Jun 18, 4:45 PM CDTSpecial Marine WarningGRB90 min
Jun 18, 4:51 PM CDTSevere Thunderstorm WarningGRBCalumet, Winnebago39 min
Jun 18, 5:12 PM CDTSpecial Marine WarningGRB75 min
Jun 18, 5:30 PM CDTSevere Thunderstorm WarningGRBBrown, Calumet, Manitowoc, Outagamie, Winnebago45 min
Jun 18, 5:31 PM CDTSpecial Marine WarningGRB89 min
Jun 18, 6:08 PM CDTSevere Thunderstorm WarningGRBCalumet, Manitowoc, Winnebago37 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2012Every severe thunderstorm warning in 2012

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.