Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 45, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 18, 1998, 11:42 AM CDT for Iowa County, Wisconsin. It was in force for 48 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, 11:42 AM CDT (16:42 UTC)
- Expired
- Jun 18, 1998, 12:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Iowa County, WI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 12:00 PM CDT | Thunderstorm Wind | Helena, 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, 4.7 hours before the alert went out and 156 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.
000 TTAA00 KMKE 181642 RRA SVRMKE WIC049-181730- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1142 AM CDT THU JUN 18 1998 THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN WI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... IOWA COUNTY IN SOUTH CENTRAL WISCONSIN * UNTIL 1230 PM CDT * AT 1130 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 20 MILES WEST OF DODGEVILLE...MOVING NORTHEAST AT 30 MPH. THE MAIN THREAT FROM THIS STORM WILL BE LARGE HAIL. * THE SEVERE THUNDERSTORM WILL BE NEAR... HIGHLAND AT 1150 PM CDT CLYDE AT 1205 PM CDT AVOCA AT 1215 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. PUMA/HELMAN
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, 6:00 AM CDT, 5 hours 42 minutes before
WIZ046-047-051-052-056>060-062>072-181800- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 600 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. DISCUSSION... A WARM FRONT EXTENDING SOUTHEAST FROM STRONG LOW PRESSURE OVER SOUTH DAKOTA WILL LIFT NORTH INTO SOUTHERN WISCONSIN TODAY...AND REMAIN THERE TONIGHT. THE FRONT WILL BE A FOCUS FOR THUNDERSTORM ACTIVITY...AND THERE IS A SLIGHT RISK THAT SOME OF THE STORMS COULD BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MIGHT BE NEEDED TODAY AND TONIGHT. MEADE
Special weather statement, Jun 18, 6:00 AM CDT, 5 hours 42 minutes before
WIZ046-047-051-052-056>060-062>072-181800- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 600 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. DISCUSSION... A WARM FRONT EXTENDING SOUTHEAST FROM STRONG LOW PRESSURE OVER SOUTH DAKOTA WILL LIFT NORTH INTO SOUTHERN WISCONSIN TODAY...AND REMAIN THERE TONIGHT. THE FRONT WILL BE A FOCUS FOR THUNDERSTORM ACTIVITY...AND THERE IS A SLIGHT RISK THAT SOME OF THE STORMS COULD BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MIGHT BE NEEDED TODAY AND TONIGHT. MEADE
Special weather statement, Jun 18, 10:30 AM CDT, 1 hour 12 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, 1 hour 12 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, 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 |
| 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.