Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 62, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 18, 1998, 6:38 PM CDT for Jefferson County, Rock County, Wisconsin. It was in force for 62 min. 2 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
- Jun 18, 1998, 6:38 PM CDT (23:38 UTC)
- Expired
- Jun 18, 1998, 7:40 PM CDT
- In force
- 62 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
Counties Jefferson County, WI, Rock County, WI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 6:50 PM CDT | Thunderstorm Wind | Jefferson, WI | |
| Jun 18, 7:35 PM CDT | Thunderstorm Wind | Footville, 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 |
|---|---|---|---|
| Jun 18, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.6 hours before the alert went out and 188 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
- 2000 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1205 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
350 WUUS1 KMKE 182337 RRA SVRMKE WIC027-047-055-105-190040- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 638 PM CDT THU JUN 18 1998 THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN WI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... DODGE COUNTY IN SOUTHEASTERN WISCONSIN GREEN LAKE COUNTY IN CENTRAL WISCONSIN JEFFERSON COUNTY IN SOUTHEASTERN WISCONSIN ROCK COUNTY IN SOUTH CENTRAL WISCONSIN * UNTIL 740 PM CDT * AT 630 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM MONTELLO TO MADISON TO BRODHEAD... MOVING NORTHEAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GREEN LAKE AT 700 PM BEAVER DAM AT 700 PM FORT ATKINSON AT 700 PM JANESVILLE AT 700 PM CDT IF YOU ARE IN THESE AREAS... SEEK SAFETY IN A SMALL INTERIOR ROOM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST PROTECTION. SEVERE THUNDERSTORMS WILL OCCASIONALLY PRODUCE TORNADOES. HELMAN/DAVIS
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 11:42 AM CDT | Severe Thunderstorm Warning | MKX | Iowa | 48 min |
| Jun 18, 12:40 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 60 min |
| Jun 18, 1:01 PM CDT | Severe Thunderstorm Warning | MKX | Columbia | 54 min |
| Jun 18, 1:04 PM CDT | Severe Thunderstorm Warning | MKX | Green | 61 min |
| Jun 18, 1:15 PM CDT | Severe Thunderstorm Warning | MKX | Marquette | 60 min |
| Jun 18, 1:26 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac, Green Lake | 64 min |
| Jun 18, 3:50 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 60 min |
| Jun 18, 4:17 PM CDT | Tornado Warning | MKX | Rock, Walworth | 33 min |
| Jun 18, 4:34 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Walworth, Waukesha | 61 min |
| Jun 18, 4:55 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 55 min |
| Jun 18, 4:55 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 55 min |
| Jun 18, 5:00 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 60 min |
| Jun 18, 5:10 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green | 60 min |
| Jun 18, 5:10 PM CDT | Severe Thunderstorm Warning | MKX | Columbia | 60 min |
| Jun 18, 5:50 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette, Sauk | 50 min |
| Jun 18, 6:02 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Marquette | 63 min |
| Jun 18, 6:02 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green | 63 min |
| Jun 18, 6:38 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Green Lake | 62 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1998Every severe thunderstorm warning in 1998
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.