Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 76, NWS Green Bay, WI

July 30, 2002Shawano County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Jul 30, 2002, 8:26 PM CDT for Shawano County, Wisconsin. It was in force for 49 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 30, 2002, 8:26 PM CDT (01:26 UTC)
Expired
Jul 30, 2002, 9:15 PM CDT
In force
49 min
Issued by
NWS Green Bay, WI
Area
Counties, with a storm outline in the text

County Shawano County, WI

The radar

The Green Bay radar (KGRB), 43 km from the middle of the area, began a volume at 01:28 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
Jul 30, 5:35 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 1.4 hours before the alert went out and 45 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 00:00Z on 2002-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3877 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2002-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 82 square meters per square second.19395878Sfc1 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
3877 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
1398 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
82 m²/s²
0-3 km storm-relative helicity
164 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.0

Open this sounding in Storm Lab

The text

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

141 
WUUS53 KGRB 310126
SVRGRB
WIC115-310215-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREEN BAY WI
826 PM CDT TUE JUL 30 2002

THE NATIONAL WEATHER SERVICE IN GREEN BAY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN SHAWANO COUNTY IN WISCONSIN

* UNTIL 915 PM CDT

* AT 826 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED A
  SEVERE THUNDERSTORM WITH STRONG WINDS AND HAIL. THE STORM WAS
  LOCATED NEAR SHAWANO LAKE. THAT PLACES IT NEAR SHAWANO. IT WAS
  MOVING EAST AT 45 MPH.

* SOME LOCATIONS THAT WILL BE AFFECTED BY THE STORM INCLUDE...
  ADVANCE BY 835 PM CDT.
  PULCIFER BY 835 PM CDT.

IF YOU ARE IN THE WARNED AREA...PREPARE FOR WINDS IN EXCESS OF 60
MPH...HAIL...AND DEADLY LIGHTNING. SEEK SHELTER IMMEDIATELY.

FREQUENT CLOUD-TO-GROUND LIGHTNING IS LIKELY. IF OUTDOORS...STAY AWAY
FROM ISOLATED HIGH OBJECTS SUCH AS TREES. ALSO AVOID METAL OBJECTS.

LAT...LON 4485 8864 4472 8864 4462 8831 4483 8826

KURIMSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 30, 7:12 PM CDTSevere Thunderstorm WarningGRBPortage, Wood63 min
Jul 30, 7:16 PM CDTSevere Thunderstorm WarningGRBLanglade59 min
Jul 30, 7:28 PM CDTTornado WarningGRBLanglade, Lincoln32 min
Jul 30, 7:44 PM CDTTornado WarningGRBShawano46 min
Jul 30, 7:55 PM CDTSevere Thunderstorm WarningGRBLincoln35 min
Jul 30, 8:03 PM CDTSevere Thunderstorm WarningGRBMenominee42 min
Jul 30, 8:11 PM CDTSevere Thunderstorm WarningGRBOconto49 min
Jul 30, 8:15 PM CDTSpecial Marine WarningGRB2 hr
Jul 30, 8:15 PM CDTSpecial Marine WarningGRB2 hr
Jul 30, 8:15 PM CDTSpecial Marine WarningGRB2 hr
Jul 30, 8:29 PM CDTSevere Thunderstorm WarningGRBWaushara46 min
Jul 30, 8:46 PM CDTSevere Thunderstorm WarningGRBBrown, Vilas44 min
Jul 30, 8:51 PM CDTSevere Thunderstorm WarningGRBWinnebago39 min
Jul 30, 8:56 PM CDTSevere Thunderstorm WarningGRBOutagamie34 min
Jul 30, 9:17 PM CDTSevere Thunderstorm WarningGRBCalumet43 min
Jul 30, 9:25 PM CDTSpecial Marine WarningGRB95 min
Jul 30, 9:25 PM CDTSpecial Marine WarningGRB95 min
Jul 30, 9:29 PM CDTSevere Thunderstorm WarningGRBBrown, Manitowoc46 min
Jul 30, 9:43 PM CDTSevere Thunderstorm WarningGRBDoor32 min
Jul 31, 1:02 PM CDTSevere Thunderstorm WarningGRBOneida, Vilas58 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2002Every 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.