Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 49, NWS Green Bay, WI

June 8, 2011Manitowoc County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jun 8, 2011, 8:23 PM CDT for Manitowoc County, Wisconsin. It was in force for 37 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: Jun 8, 2011, 8:23 PM CDT (01:23 UTC)
Expired: Jun 8, 2011, 9:00 PM CDT
In force: 37 min
Issued by: NWS Green Bay, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Manitowoc County, WI

The radar

The Green Bay radar (KGRB), 50 km from the middle of the area, began a volume at 01:23 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
Jun 8, 8:55 PM CDT	TSTM WND DMG	Manitowoc, WI	SEVERAL TREES/POWER LINES DOWN WEST OF THE CITIES OF MANITOWOC AND TWO RIVERS. HWY 10 AND COUNTY J, HWY 10 AND BRANCH RIVER RD, AND OLD HWY H.
Jun 8, 8:55 PM CDT	TSTM WND GST 58	Manitowoc, WI

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
Jun 8, 4:49 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.4 hours before the alert went out and 47 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: 4124 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1367 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 108 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 10.1

Open this sounding in Storm Lab

The text

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

748 
WUUS53 KGRB 090123
SVRGRB
WIC071-090200-
/O.NEW.KGRB.SV.W.0049.110609T0123Z-110609T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
823 PM CDT WED JUN 8 2011

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MANITOWOC COUNTY IN EAST CENTRAL WISCONSIN...

* UNTIL 900 PM CDT

* AT 819 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 5 MILES SOUTHWEST OF BRILLION...
  OR 16 MILES SOUTHEAST OF APPLETON...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLLINS AROUND AROUND 830 PM CDT.
  VALDERS AROUND 840 PM CDT.
  BRANCH AROUND 845 PM CDT.
  MANITOWOC AROUND 855 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
COLLINS...REEDSVILLE...CATO...GRIMMS...MENCHALVILLE...CLARKS MILLS...
TAUS...WHITELAW...KELLNERSVILLE AND BRANCH.

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 4424 8804 4424 8789 4431 8788 4433 8754
      4423 8750 4419 8750 4414 8756 4410 8764
      4405 8764 4404 8766 4401 8766 4394 8771
      4395 8804
TIME...MOT...LOC 0121Z 264DEG 31KT 4413 8810
WIND...HAIL 60MPH <.75IN

$$

ECKBERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 7:52 PM CDT	Severe Thunderstorm Warning	GRB	Winnebago	38 min
Jun 8, 8:04 PM CDT	Severe Thunderstorm Warning	GRB	Calumet	41 min
Jun 8, 8:13 PM CDT	Special Marine Warning	GRB		91 min
Jun 8, 8:52 PM CDT	Severe Thunderstorm Warning	GRB	Kewaunee, Manitowoc	38 min
Jun 9, 3:32 AM CDT	Small Craft Advisory	GRB		12 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

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.