Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 46, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 18, 1998, 12:40 PM CDT for Dane County, Wisconsin. It was in force for 60 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
- Jun 18, 1998, 12:40 PM CDT (17:40 UTC)
- Expired
- Jun 18, 1998, 1:40 PM CDT
- In force
- 60 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Dane County, WI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 12:45 PM CDT | Hail 0.75 | Verona, 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 12:00Z, 5.7 hours before the alert went out and 184 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.
786 WUUS1 KMKE 181741 RRA SVRMKE WIC025-181840- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1240 PM CDT THU JUN 18 1998 THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN WI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... DANE COUNTY IN SOUTH CENTRAL WISCONSIN * UNTIL 140 PM CDT * AT 1240 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS EXTENDING FROM ROXBURY IN NORHTWEST DANE COUNTY TO MT. VERNON IN SOUTHWEST DANE... MOVING EAST AT 30 MPH. * THE LINE OF SEVERE THUNDERSTORMS WILL EXTEND FROM NEAR... SUN PRAIRIE TO STOUGHTON IN SOUTHEAST DANE COUNTY AT 130 PM CDT. STRONG DAMAGING WINDS TO AROUND 60 MPH ARE POSSIBLE ALONG WITH HAIL UP TO 1 INCH IN DIAMETER. 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. KAPELA/TH
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 18, 10:30 AM CDT, 2 hours 10 minutes before
WIZ046-047-051-052-056>060-062>072-182000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1030 AM CDT THU JUN 18 1998 ...SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT... ...FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... THREAT... LARGE HAIL AND DAMAGING WINDS...VERY HEAVY RAINFALL DISCUSSION... AN UNSTABLE AIRMASS WITH A COPIUS AMOUNTS OF MOISTURE WILL MOVE INTO SOUTHERN WISCONSIN THIS AFTERNOON. AN UPPER LEVEL DISTURBANCE MOVING INTO THE WESTERN WISCONSIN THIS AFTERNOON AND TONIGHT WILL BE THE FOCUS FOR THUNDERSTORM ACTIVITY. THERE IS A SLIGHT RISK THAT SOME OF THE STORMS MAY BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MAY BE NEEDED nTODAY AND TONIGHT. KRR
Special weather statement, Jun 18, 10:30 AM CDT, 2 hours 10 minutes before
WIZ046-047-051-052-056>060-062>072-182000- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1030 AM CDT THU JUN 18 1998 ...SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND TONIGHT... ...FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... THREAT... LARGE HAIL AND DAMAGING WINDS...VERY HEAVY RAINFALL DISCUSSION... AN UNSTABLE AIRMASS WITH A COPIUS AMOUNTS OF MOISTURE WILL MOVE INTO SOUTHERN WISCONSIN THIS AFTERNOON. AN UPPER LEVEL DISTURBANCE MOVING INTO THE WESTERN WISCONSIN THIS AFTERNOON AND TONIGHT WILL BE THE FOCUS FOR THUNDERSTORM ACTIVITY. THERE IS A SLIGHT RISK THAT SOME OF THE STORMS MAY BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MAY BE NEEDED nTODAY AND TONIGHT. KRR
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, 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 |
| Jun 18, 6:38 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Rock | 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.