Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 129, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 1, 1998, 8:49 PM CDT for Waukesha County, Wisconsin. It was in force for 61 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
- Sep 1, 1998, 8:49 PM CDT (01:49 UTC)
- Expired
- Sep 1, 1998, 9:50 PM CDT
- In force
- 61 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 21 km from the middle of the area, began a volume at 01:53 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 |
|---|---|---|---|
| Sep 1, 9:24 PM CDT | Hail 0.75 | Waukesha, 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, 1.8 hours before the alert went out and 238 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
- 8 J/kg
- Mixed-layer CIN
- -201 J/kg
- Mixed-layer LCL
- 1590 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMKE 020149 RRA SVRMKE WIC133-020250- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 849 PM CDT TUE SEP 1 1998 THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN WI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN WAUKESHA COUNTY IN SOUTHEASTERN WISCONSIN * UNTIL 950 PM CDT * AT 845 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM SOUTHEAST DODGE COUNTY... MOVING SOUTHEAST AT AROUND 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... HARTLAND AT 905 PM MEMOMONIEE FALLS AT 915 PM SUSSEX AT 915 PM BROOKFIELD AT 925 PM IF YOU ARE IN THESE AREAS... SEEK SAFETY IN A SMALL INTERIOR RO$OM AWAY FROM WINDOWS. A BASEMENT OFFERS THE BEST PROTECTION. SEVERE THUNDERSTORMS WILL OCCASIONALLY PRODUCE TORNADOES. MK/REM
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 7:18 PM CDT | Severe Thunderstorm Warning | MKX | Columbia | 62 min |
| Sep 1, 7:38 PM CDT | Severe Thunderstorm Warning | MKX | Dodge | 62 min |
| Sep 1, 8:14 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson | 56 min |
| Sep 1, 8:28 PM CDT | Severe Thunderstorm Warning | MKX | Washington | 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; radar from the NEXRAD Level II archive.