Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 13, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at May 16, 1999, 3:55 PM CDT for Sauk 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
- May 16, 1999, 3:55 PM CDT (20:55 UTC)
- Expired
- May 16, 1999, 4:55 PM CDT
- In force
- 60 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties
County Sauk County, WI
The radar
The La Crosse radar (KARX), 109 km from the middle of the area, began a volume at 20:57 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 |
|---|---|---|---|
| May 16, 4:20 PM CDT | Thunderstorm Wind | Reedsburg, 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.9 hours before the alert went out and 189 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 223 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 162055 RRA SVRMKE WIC111-162155- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 355 PM CDT SUN MAY 16 1999 THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SAUK COUNTY IN SOUTH CENTRAL WISCONSIN * UNTIL 455 PM CDT * AT 355 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM RICHLAND CENTER IN RICHLAND COUNTY TO HIGHLAND IN IOWA COUNTY...MOVING EAST AT 35 MPH. * THE SEVERE THUNDERSTORMS WILL BE NEAR...REEDSBURG...ROCK SPRINGS AND LELAND BY 430 PM. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FRpOM WINDOWS! JH/SD
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, May 16, 11:03 AM CDT, 4 hours 52 minutes before
WIZ046-047-051-052-056>060-062>072-170000- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1103 AM CDT SUN MAY 16 1999 ...SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT... ...FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... THREAT... LARGE HAIL AND DAMAGING WINDS. DISCUSSION... A SOUTHERLY FLOW OF MOIST AND MORE UNSTABLE AIR IS WORKING NORTH INTO SOUTHERN WISCONSIN THIS AFTERNOON. AN UPPER AIR DISTURBANCE AND STRENGTHENING LOW LEVEL JET STREAM ARE EXPECTED TO INTERACT WITH THE INSTABILTY...TO PRODUCE PERIODS OF THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT. SOME ISOLATED STORMS MAY BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MAY NEED TO BE ACTIVATED THIS AFTERNOON INTO TONIGHT.
Special weather statement, May 16, 11:03 AM CDT, 4 hours 52 minutes before
WIZ046-047-051-052-056>060-062>072-170000- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1103 AM CDT SUN MAY 16 1999 ...SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT... ...FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... THREAT... LARGE HAIL AND DAMAGING WINDS. DISCUSSION... A SOUTHERLY FLOW OF MOIST AND MORE UNSTABLE AIR IS WORKING NORTH INTO SOUTHERN WISCONSIN THIS AFTERNOON. AN UPPER AIR DISTURBANCE AND STRENGTHENING LOW LEVEL JET STREAM ARE EXPECTED TO INTERACT WITH THE INSTABILTY...TO PRODUCE PERIODS OF THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT. SOME ISOLATED STORMS MAY BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MAY NEED TO BE ACTIVATED THIS AFTERNOON INTO TONIGHT.
Special weather statement, May 16, 11:13 AM CDT, 4 hours 42 minutes before
WIZ046-047-051-052-056>060-062>072-162300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1113 AM CDT SUN MAY 16 1999 ...SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT... ...FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... THREAT... LARGE HAIL AND DAMAGING WINDS. DISCUSSION... A SOUTHERLY FLOW OF MOIST AND MORE UNSTABLE AIR IS WORKING NORTH INTO SOUTHERN WISCONSIN THIS AFTERNOON. AN UPPER AIR DISTURBANCE AND STRENGTHENING LOW LEVEL JET STREAM ARE EXPECTED TO INTERACT WITH THE INSTABILTY...TO PRODUCE PERIODS OF THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT. SOME ISOLATED STORMS MAY BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MAY NEED TO BE ACTIVATED THIS AFTERNOON INTO TONIGHT.
Special weather statement, May 16, 11:13 AM CDT, 4 hours 42 minutes before
WIZ046-047-051-052-056>060-062>072-162300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1113 AM CDT SUN MAY 16 1999 ...SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT... ...FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... THREAT... LARGE HAIL AND DAMAGING WINDS. DISCUSSION... A SOUTHERLY FLOW OF MOIST AND MORE UNSTABLE AIR IS WORKING NORTH INTO SOUTHERN WISCONSIN THIS AFTERNOON. AN UPPER AIR DISTURBANCE AND STRENGTHENING LOW LEVEL JET STREAM ARE EXPECTED TO INTERACT WITH THE INSTABILTY...TO PRODUCE PERIODS OF THUNDERSTORMS LATE THIS AFTERNOON AND TONIGHT. SOME ISOLATED STORMS MAY BECOME SEVERE. SPOTTER ACTIVATION... STORM SPOTTER GROUPS MAY NEED TO BE ACTIVATED THIS AFTERNOON INTO TONIGHT.
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 3:19 PM CDT | Severe Thunderstorm Warning | MKX | Iowa | 56 min |
| May 16, 4:15 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Iowa | 60 min |
| May 16, 5:08 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 62 min |
| May 16, 5:33 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 57 min |
| May 16, 6:34 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine, Walworth | 61 min |
| May 16, 6:56 PM CDT | Severe Thunderstorm Warning | MKX | Milwaukee | 64 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.