Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 33, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 6, 1999, 4:09 PM CDT for Sauk County, Wisconsin. It was in force for 66 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jun 6, 1999, 4:09 PM CDT (21:09 UTC)
- Expired
- Jun 6, 1999, 5:15 PM CDT
- In force
- 66 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Sauk County, WI
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 6, 12:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 9.2 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
- 1488 J/kg
- Mixed-layer CIN
- -58 J/kg
- Mixed-layer LCL
- 803 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 206 m²/s²
- 0-3 km storm-relative helicity
- 240 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.9
The text
As transmitted, in the capitals the NWS used until 2016.
615 WUUS1 KMKE 062110 RRA SVRMKE WIC021-077-111-062215- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 409 PM CDT SUN JUN 6 1999 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEAST SAUK COUNTY IN SOUTH CENTRAL WISCONSIN MARQUETTE COUNTY IN SOUTH CENTRAL WISCONSIN COLUMBIA COUNTY IN SOUTH CENTRAL WISCONSIN * UNTIL 515 PM CDT * AT 409 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES EAST OF LAKE DELTON...OR 6 MILES SOUTHEAST OF WISCONSIN DELLS...MOVING NORTHEAST AT 40 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ENDEAVOR AT 420 PM CDT. WESTFIELD AT 430 PM CDT. MONTELLO AT 435 PM CDT. HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 55 MILES AN HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 800 PM CDT SUNDAY EVENING FOR SOUTHEASTERN WISCONSIN. LAT...LON 4356 8993 4344 8975 4380 8916 4399 8942 HENTZ/CROSBIE
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 6, 11:35 AM CDT, 4 hours 34 minutes before
WIZ046-047-051-052-056>060-062>072-062100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1135 AM CDT SUN JUN 6 1999 ...HAZARDOUS WEATHER OUTLOOK... ...FOR SOUTH CENTRAL AND SOUTHEASTERN WISCONSIN... THREAT... A SLIGHT TO MODERATE RISK OF SEVERE THUNDERSTORMS...THIS AFTERNOON INTO TONIGHT. LARGE HAIL UP TO GOLF BALL SIZE...AND DAMAGING WINDS OF 60 TO 80 MPH. DISCUSSION...A VERY WARM AND UNSTABLE AIRMASS IS IN PLACE OVER WISCONSIN THIS AFTERNOON. A COLD FRONT IS APPROACHING THE REGION FROM THE PLAINS. IN ADDITION...A BAND OF STRONG UPPER AIR WINDS...WILL PUSH INTO THE STATE LATER THIS AFTERNOON AND TONIGHT. THE COMBINATION OF THE VERY UNSTABLE AIRMASS...AND FAVORABLE UPPER WINDS...WILL MEAN ANY THUNDERSTORMS THAT DEVELOP...COULD BE SEVERE. THE THREAT OF SEVERE WEATHER SHOULD CONTINUE INTO TONIGHT. SPOTTER ACTIVATION... STORM SPOTTER GROUPS WILL LIKELY NEED TO BE ACTIVATED LATER THIS AFTERNOON INTO TONIGHT.
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 3:17 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Rock | 58 min |
| Jun 6, 3:19 PM CDT | Severe Thunderstorm Warning | MKX | Columbia | 56 min |
| Jun 6, 3:36 PM CDT | Tornado Warning | MKX | Green, Rock | 54 min |
| Jun 6, 3:51 PM CDT | Severe Thunderstorm Warning | MKX | Dodge | 54 min |
| Jun 6, 3:59 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 61 min |
| Jun 6, 4:06 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 54 min |
| Jun 6, 4:09 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Marquette | 66 min |
| Jun 6, 4:12 PM CDT | Tornado Warning | MKX | Walworth | 63 min |
| Jun 6, 4:16 PM CDT | Tornado Warning | MKX | Dane, Jefferson | 59 min |
| Jun 6, 4:19 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac | 56 min |
| Jun 6, 4:28 PM CDT | Tornado Warning | MKX | Jefferson | 32 min |
| Jun 6, 4:30 PM CDT | Severe Thunderstorm Warning | MKX | Waukesha | 60 min |
| Jun 6, 4:35 PM CDT | Severe Thunderstorm Warning | MKX | Green Lake | 55 min |
| Jun 6, 4:39 PM CDT | Tornado Warning | MKX | Waukesha | 66 min |
| Jun 6, 4:42 PM CDT | Severe Thunderstorm Warning | MKX | Washington | 63 min |
| Jun 6, 4:43 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee, Racine | 62 min |
| Jun 6, 4:43 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha | 62 min |
| Jun 6, 4:45 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan | 75 min |
| Jun 6, 4:51 PM CDT | Severe Thunderstorm Warning | MKX | Dodge | 24 min |
| Jun 6, 5:10 PM CDT | Tornado Warning | MKX | Ozaukee | 35 min |
| Jun 6, 6:51 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 54 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.