Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 48, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Aug 5, 1989, 1:42 PM CDT for Jefferson 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
- Aug 5, 1989, 1:42 PM CDT (18:42 UTC)
- Expired
- Aug 5, 1989, 2:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Jefferson County, WI
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 5, 2:15 PM CDT | Thunderstorm Wind 0 | Jefferson, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 6.7 hours before the alert went out and 171 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
- 58 J/kg
- Mixed-layer CIN
- -353 J/kg
- Mixed-layer LCL
- 1157 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Aug 5, 12:40 PM CDT, 1 hour 2 minutes before
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</html>Special weather statement, Aug 5, 12:53 PM CDT, 49 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE WI 1252 PM CDT FRI AUG 4 1989 ...STRONG THUNDERSTORMS HEADING FOR WALWORTH COUNTY... AT 1250 PM WEATHER RADAR SHOWED A LINE OF VERY STRONG THUNDERSTORMS FROM SOUTHWESTERN ROCK COUNTY TO THE WEST OF JANESVILLE...SOUTHWARD INTO NORTHERN ILLINOIS. THE STORMS WERE RACING EASTWARD AT 50 MPH AND WILL BE APPROACHING WESTERN WALWORTH COUNTY BETWEEN 130 AND 145 PM. STRONG WIND GUSXTS TO 50 MPH...VERY HEAVY DOWNPOURS...AND SMALL HAIL CAN BE EXPECTED WITH THESE STORMS. PERSONS IN WALWORTH COUNTY... ESPECIALLY THOSE ENGAGED IN OUTDOOR ACTIVITIES SHOULD PREPARE FOR THESE STORMS NOW. FIELD
Special weather statement, Aug 5, 1:15 PM CDT, 27 minutes before
SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE WI 115 PM CDT FRI AUG 4 1989 ...STRONG THUNDERSTORMS APPROACHING SOUTHEAST WISCONSIN... AT 115 PM CDT...WEATHER RADAR INDICATED A LINE OF INTENSE THUNDERSTORMS IN SOUTH CENTRAL WISCONSIN MOVING RAPIDLY NORTHEAST AT AROUND 50 MPH. AT THIS SPEED...THE STORMS WILL BE AFFECTING THE SOUTHEAST WISCONSIN COUNTIES OF JEFFERSON...WALWORTH...WAUKESHA...MILWAUKEE...RACINE...AND KENOSHA BETWEEN 145 PM AND 215 PM. THE COASTAL WATERS OF LAKE MICHIGAN BETWEEN KENOSHA AND MILWAUKEE WILL ALSO BE AFFECTED. THESE STORMS HAVE A HISTORY OF PRODUCING WIND GUSTS TO 50 MPH. HAIL... HEAVY RAINS...AND DANGEROUS LIGHTNING CAN ALSO BE EXPECTED.| PERSONS IN SOUTHEAST WISCONSIN AND BOATERS ON LAKE MICHIGAN FROM MILWAUKEE SOUTHWARD...ARE ADVISED TO STAY ALERT FOR THESE STORMS AND BE PREPARED TO SEEK SAFE SHELTER AND OR HARBOR SHOULD THREATNING WEATHER APPROACH. ^ KOCHIS
Special weather statement, Aug 5, 1:39 PM CDT, 3 minutes before
SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE WI 138 PM CDT SAT AUG 5 1989 ...STRONG THUNDERSTORMS APPROACHING SOUTHEAST WISCONSIN... AT 135 PM CDT...WEATHER RADAR INDICATED A LINE OF INTENSE THUNDERSTORMS IN SOUTH CENTRAL WISCONSIN MOVING RAPIDLY NORTHEAST AT AROUND 50 MPH. THE STORMS EXTENDED FROM NEAR STOUGHTON IN SOUTHEAST DANE COUNTY SOUTHEAST TO MILTON IN NORTHEAST ROCK COUNTY TO WALWORTH IN WALWORTH COUNTY...30 MILES NORTHEAST OF ROCKFORD. THESE STORMS HAVE PRODUCED AT WIND GUST OF 46 MPH AT THE JANESVILLE AIRPORT AT 125 PM CDT. THE STORMS WILL MOVE THROUGH JEFFERSON AND WALWORTH COUNTIES BETWEEN NOW AND 230 PM CDT AND AFFECT THE CITIES OF JEFFERSON...WHITEWATER AND LAKE GENEVA. PERSONS IN SOUTHEAST WISCONSIN AND BOATERS ON LAKE MICHIGAN FROM MILWAUKEE SOUTHWARD ARE ADVISED TO STAY ALERT FOR THESE STORMS AND BE READY TO SEEK SAFE HARBOR AND SHELTER SHOULD THREATENING WEATHER APPROACH. ZAJDEL
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 9:02 PM CDT | Severe Thunderstorm Warning | MKX | Dodge | 58 min |
| Aug 4, 9:02 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac | 43 min |
| Aug 4, 9:40 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 50 min |
| Aug 4, 9:58 PM CDT | Severe Thunderstorm Warning | MKX | Washington, Waukesha | 62 min |
| Aug 4, 10:07 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 68 min |
| Aug 4, 10:18 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Racine | 57 min |
| Aug 4, 10:18 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee | 50 min |
| Aug 4, 10:29 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 31 min |
| Aug 5, 1:42 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 36 min |
| Aug 5, 2:09 PM CDT | Severe Thunderstorm Warning | MKX | Racine | 21 min |
| Aug 5, 2:09 PM CDT | Severe Thunderstorm Warning | MKX | Waukesha | 36 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 1989Every severe thunderstorm warning in 1989
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.