Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 90, NWS Green Bay, WI

August 1, 2012Langlade County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Aug 1, 2012, 2:58 PM CDT for Langlade County, Wisconsin. It was in force for 21 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 1, 2012, 2:58 PM CDT (19:58 UTC)
Expired
Aug 1, 2012, 3:19 PM CDT
In force
21 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Langlade County, WI

The radar

The Green Bay radar (KGRB), 115 km from the middle of the area, began a volume at 19:59 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
Aug 1, 2:19 PM CDTSevere Thunderstorm WatchSPC4 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.0 hours before the alert went out and 117 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 2012-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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 12:00Z on 2012-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 70 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1165 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
70 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

339 
WUUS53 KGRB 011958
SVRGRB
WIC067-012045-
/O.NEW.KGRB.SV.W.0090.120801T1958Z-120801T2045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
258 PM CDT WED AUG 1 2012

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN LANGLADE COUNTY IN NORTH CENTRAL WISCONSIN...

* UNTIL 345 PM CDT

* AT 254 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 7 MILES SOUTHWEST OF PARRISH...OR 20 MILES
  NORTHWEST OF ANTIGO...AND MOVING SOUTHEAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DEERBROOK AROUND 310 PM CDT.
  ANTIGO AROUND 315 PM CDT.
  BRYANT AROUND 320 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE 
ORMSBY...KOEPENICK...KEMPSTER...NEVA...AND POLAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4539 8894 4504 8898 4503 8922 4504 8923
      4512 8923 4512 8936 4513 8942 4540 8943
TIME...MOT...LOC 1957Z 289DEG 48KT 4531 8943
WIND...HAIL <50MPH 1.00IN

$$

ECKBERG
2 follow-up statements
564 
WWUS53 KGRB 012010
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
310 PM CDT WED AUG 1 2012

WIC067-012045-
/O.CON.KGRB.SV.W.0090.000000T0000Z-120801T2045Z/
LANGLADE WI-
310 PM CDT WED AUG 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WESTERN
LANGLADE COUNTY UNTIL 345 PM CDT...

AT 308 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 9 MILES NORTHWEST OF ANTIGO...MOVING EAST AT 55
MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  ANTIGO AROUND 315 PM CDT.

OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE NEVA...
DEERBROOK...BRYANT AND POLAR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...AND DEADLY
LIGHTNING. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4534 8942 4539 8894 4512 8897 4512 8898
      4504 8898 4503 8922 4504 8923 4512 8923
      4512 8936 4513 8942
TIME...MOT...LOC 2009Z 289DEG 48KT 4526 8923
WIND...HAIL <50MPH 1.00IN

$$
ECKBERG
465 
WWUS53 KGRB 012019
SVSGRB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
319 PM CDT WED AUG 1 2012

WIC067-012029-
/O.CAN.KGRB.SV.W.0090.000000T0000Z-120801T2045Z/
LANGLADE WI-
319 PM CDT WED AUG 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN LANGLADE COUNTY 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...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE 
WITH THIS THUNDERSTORM.

LAT...LON 4534 8942 4539 8894 4512 8897 4512 8898
      4504 8898 4503 8922 4504 8923 4512 8923
      4512 8936 4513 8942
TIME...MOT...LOC 2019Z 289DEG 48KT 4521 8905

$$

ECKBERG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 12:38 PM CDTSevere Thunderstorm WarningGRBVilas52 min
Aug 1, 2:19 PM CDTSevere Thunderstorm WarningGRBLincoln41 min
Aug 1, 5:20 PM CDTSevere Thunderstorm WarningGRBOneida, Vilas40 min
Aug 1, 6:00 PM CDTSevere Thunderstorm WarningGRBOneida, Vilas25 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.