Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 64, NWS Green Bay, WI

July 27, 20025 counties in Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 27, 2002, 6:00 PM CDT for 5 counties in Wisconsin. It was in force for 60 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: Jul 27, 2002, 6:00 PM CDT (23:00 UTC)
Expired: Jul 27, 2002, 7:00 PM CDT
In force: 60 min
Issued by: NWS Green Bay, WI
Area: Counties, with a storm outline in the text

Counties Forest County, WI, Langlade County, WI, Lincoln County, WI, Oneida County, WI, Vilas County, WI

The radar

The Marquette radar (KMQT), 161 km from the middle of the area, began a volume at 23:03 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
Jul 27, 3:20 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.0 hours before the alert went out and 180 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: 789 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1005 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.1

Open this sounding in Storm Lab

The text

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

059 
WUUS53 KGRB 272300
SVRGRB
WIC041-067-069-085-125-280000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
556 PM CDT SAT JUL 27 2002

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  LANGLADE COUNTY IN WISCONSIN
  EASTERN LINCOLN COUNTY IN WISCONSIN
  EASTERN ONEIDA COUNTY IN WISCONSIN
  EASTERN VILAS COUNTY IN WISCONSIN
  FOREST COUNTY IN WISCONSIN

* UNTIL 700 PM CDT

* AT 556 PM CDT...WEATHER SPOTTERS REPORTED A LINE OF SEVERE
  THUNDERSTORMS WITH 60 MPH WINDS. THE LINE WAS LOCATED FROM 30 MILES
  NORTH OF EAGLE RIVER TO MERRILL. THE LINE WAS MOVING EAST AT 50
  MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORMS INCLUDE...  
  THREE LAKES BY 600 PM CDT.
  SUMMIT LAKE BY 610 PM CDT
  CRANDON BY 620 PM CDT.
 
IF YOU ARE IN THE PATH OF THESE STORMS...PREPARE FOR WINDS IN EXCESS 
OF 60 MPH...HAIL...AND DEADLY LIGHTNING. SEEK SHELTER IMMEDIATELY.

LAT...LON 4640 8959 4570 8935 4513 8990 4511 8935
          4568 8880 4638 8903

HELMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 5:00 PM CDT	Severe Thunderstorm Warning	GRB	Lincoln, Oneida, Vilas	60 min
Jul 27, 6:13 PM CDT	Severe Thunderstorm Warning	GRB	Florence	62 min
Jul 27, 6:50 PM CDT	Severe Thunderstorm Warning	GRB	Marinette	70 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.