Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 95, NWS Green Bay, WI

August 11, 2002Menominee County, Oconto County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Aug 11, 2002, 5:10 PM CDT for Menominee County, Oconto County, Wisconsin. It was in force for 65 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 11, 2002, 5:10 PM CDT (22:10 UTC)
Expired: Aug 11, 2002, 6:15 PM CDT
In force: 65 min
Issued by: NWS Green Bay, WI
Area: Whole counties

Counties Menominee County, WI, Oconto County, WI

The radar

The Green Bay radar (KGRB), 63 km from the middle of the area, began a volume at 22:12 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
Aug 11, 5:45 PM CDT	Thunderstorm Wind 50 E	Mountain, WI
Aug 11, 6:05 PM CDT	Hail 0.88	Klondike, WI
Aug 11, 6:05 PM CDT	Thunderstorm Wind 51 M	Klondike, WI

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 11, 4:55 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.2 hours before the alert went out and 65 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: 14 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1454 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 121 m²/s²
0-3 km storm-relative helicity: 119 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.

340 
WUUS53 KGRB 112210
SVRGRB
WIC078-083-112315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
509 PM CDT SUN AUG 11 2002

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MENOMINEE COUNTY IN WISCONSIN
  NORTHERN OCONTO COUNTY IN WISCONSIN

* UNTIL 615 PM CDT

* AT 509 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  LINE OF SEVERE THUNDERSTORMS WITH DAMAGING WINDS AND LARGE HAIL.
  THE LINE WAS LOCATED FROM MOUNTAIN TO 16 MILES SOUTHWEST OF
  MOUNTAIN. THE LINE WAS MOVING SOUTHEAST AT 10 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORMS INCLUDE...
  BREED BY 545 PM CDT.
  HAYES BY 600 PM CDT.
  SURING BY 610 PM CDT.
  
IF YOU ARE IN THE WARNED AREA...PREPARE FOR WINDS IN EXCESS OF 60
MPH...HAIL...AND DEADLY LIGHTNING. SEEK SHELTER IMMEDIATELY.

HELMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 4:08 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	52 min
Aug 11, 4:16 PM CDT	Severe Thunderstorm Warning	GRB	Brown, Outagamie	59 min
Aug 11, 4:37 PM CDT	Severe Thunderstorm Warning	GRB	Langlade	68 min
Aug 11, 5:30 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln	60 min
Aug 11, 5:38 PM CDT	Special Marine Warning	GRB		2 hr
Aug 11, 5:41 PM CDT	Severe Thunderstorm Warning	GRB	Oneida	64 min
Aug 11, 5:59 PM CDT	Severe Thunderstorm Warning	GRB	Oconto	61 min
Aug 11, 6:35 PM CDT	Special Marine Warning	GRB		115 min
Aug 11, 6:35 PM CDT	Special Marine Warning	GRB		115 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.