Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 84, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 21, 2002, 9:37 PM CDT for Green County, Rock County, Wisconsin. It was in force for 53 min. 1 report 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 21, 2002, 9:37 PM CDT (02:37 UTC)
- Expired
- Aug 21, 2002, 10:30 PM CDT
- In force
- 53 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
Counties Green County, WI, Rock County, WI
The radar
The Milwaukee radar (KMKX), 72 km from the middle of the area, began a volume at 02:37 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 |
|---|---|---|---|
| Aug 21, 9:43 PM CDT | Thunderstorm Wind 56 E | Juda, 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 nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.6 hours before the alert went out and 152 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.
- Mixed-layer CAPE
- 2239 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 997 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 288 m²/s²
- 0-3 km storm-relative helicity
- 522 m²/s²
- Significant tornado parameter
- 4.5
- Supercell composite
- 24.4
The text
As transmitted, in the capitals the NWS used until 2016.
933 WUUS53 KMKX 220237 SVRMKE WIC045-105-220330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 937 PM CDT WED AUG 21 2002 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEAST GREEN COUNTY IN SOUTH CENTRAL WISCONSIN ROCK COUNTY IN SOUTH CENTRAL WISCONSIN * UNTIL 1030 PM CDT * AT 937 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 14 MILES SOUTHWEST OF BRODHEAD...OR ABOUT 11 MILES SOUTHEAST OF MONROE...MOVING NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BRODHEAD AT 955 PM CDT. ORFORDVILLE AT 1005 PM CDT. FOOTVILLE AT 1015 PM CDT. BELOIT AT 1020 PM CDT. IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD PREPARE FOR DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...AND DEADLY LIGHTNING. SEEK SHELTER IMMEDIATELY HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 60 MILES AN HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED. THIS STORM IS CAPABLE OF PRODUCING HEAVY RAINFALL...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. EISE
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 7:16 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson | 59 min |
| Aug 21, 7:25 PM CDT | Special Marine Warning | MKX | 65 min | |
| Aug 21, 7:25 PM CDT | Special Marine Warning | MKX | 65 min | |
| Aug 21, 7:29 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 61 min |
| Aug 21, 7:48 PM CDT | Severe Thunderstorm Warning | MKX | Waukesha | 27 min |
| Aug 21, 8:00 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 60 min |
| Aug 21, 8:01 PM CDT | Severe Thunderstorm Warning | MKX | Washington | 14 min |
| Aug 21, 8:08 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Ozaukee | 67 min |
| Aug 21, 8:16 PM CDT | Special Marine Warning | MKX | 89 min | |
| Aug 21, 8:16 PM CDT | Special Marine Warning | MKX | 89 min | |
| Aug 21, 8:16 PM CDT | Special Marine Warning | MKX | 89 min | |
| Aug 22, 4:04 AM CDT | Flash Flood Warning | MKX | Lafayette | 3 hr |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.