Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 21, NWS Green Bay, WI

May 12, 2000Calumet County, Manitowoc County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at May 12, 2000, 4:25 PM CDT for Calumet County, Manitowoc County, Wisconsin. It was in force for 50 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: May 12, 2000, 4:25 PM CDT (21:25 UTC)
Expired: May 12, 2000, 5:15 PM CDT
In force: 50 min
Issued by: NWS Green Bay, WI
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Calumet County, WI, Manitowoc County, WI

The radar

The Green Bay radar (KGRB), 51 km from the middle of the area, began a volume at 21:27 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, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.4 hours before the alert went out and 48 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: 15 J/kg
Mixed-layer CIN: -508 J/kg
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 122 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.

000 
WUUS53 KGRB 122128
SVRGRB
WIC015-071-122215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
425 PM CDT FRI MAY 12 2000

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MANITOWOC COUNTY IN WISCONSIN
  SOUTHEAST CALUMET COUNTY IN WISCONSIN

* UNTIL 515 PM CDT

* AT 425 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM WITH DAMAGING WINDS AND LARGE HAIL. THE STORM
  WAS 7 MILES SOUTHWEST OF BROTHERTOWN. THAT PLACES THE STORM 7 MILES
  NORTHEAST OF FOND DU LAC. THE STORM WAS MOVING NORTHEAST AT 50 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORM INCLUDE...
  CHARLESBURG BY 430 PM CDT.
  NEW HOLSTEIN BY 435 PM CDT.
  VALDERS BY 440 PM CDT.

SEVERE THUNDERSTORMS PRODUCE WINDS IN EXCESS OF 60 MPH...AND HAIL AT 
LEAST 1 INCH IN DIAMETER. MOVE INDOORS AND STAY AWAY FROM WINDOWS 
UNTIL THE STORM HAS PASSED.

LAT...LON 4396 8844 4380 8833 4421 8704 4443 8719

EB/TH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 12, 10:05 AM CDT	Severe Thunderstorm Warning	GRB	Waushara	40 min
May 12, 10:43 AM CDT	Severe Thunderstorm Warning	GRB	Waushara	32 min
May 12, 10:50 AM CDT	Severe Thunderstorm Warning	GRB	Winnebago	40 min
May 12, 11:09 AM CDT	Severe Thunderstorm Warning	GRB	Calumet	51 min
May 12, 11:28 AM CDT	Severe Thunderstorm Warning	GRB	Manitowoc	47 min
May 12, 1:59 PM CDT	Severe Thunderstorm Warning	GRB	Waupaca	61 min
May 12, 2:22 PM CDT	Severe Thunderstorm Warning	GRB	Outagamie	48 min
May 12, 2:28 PM CDT	Severe Thunderstorm Warning	GRB	Brown	62 min
May 12, 2:38 PM CDT	Severe Thunderstorm Warning	GRB	Shawano	62 min
May 12, 3:08 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	47 min
May 12, 3:16 PM CDT	Severe Thunderstorm Warning	GRB	Door, Kewaunee	64 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2000 Every severe thunderstorm warning in 2000

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.