Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 2, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Feb 11, 1999, 1:12 PM CST for Sauk County, Wisconsin. It was in force for 33 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
- Feb 11, 1999, 1:12 PM CST (19:12 UTC)
- Expired
- Feb 11, 1999, 1:45 PM CST
- In force
- 33 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 19:15 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 |
|---|---|---|---|
| Feb 11, 1:31 PM CST | Hail 1 | Merrimac, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 11, 1:00 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.2 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
- 526 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 207 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 111912 RRA SVRMKE WIC111-111945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 112 PM CST THU FEB 11 1999 THE NATIONAL WEATHER SERVICE IN MILWAUKEE/SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SAUK IN SOUTH CENTRAL WISCONSIN * UNTIL 145 PM CST * AT 110 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM FROM NEAR SAUK CITY TO ROCK SPRINGS...MOVING NORTHEAST AT 60 MPH. * THE SEVERE THUNDERSTORM WILL MOVE BE NEAR... BARABOO BY 120 PM CST LAKE DELTON 120 PM CST DEVILS LAKE STATE PARK 120 PM CST DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AW>AY FROM WINDOWS! $$ EISE/DAVIS
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, Feb 11, 12:15 PM CST, 57 minutes before
WIZ046-047-051-052-056>060-062>072-112100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 1215 PM CST THU FEB 11 1999 ...SEVERE WEATHER OUTLOOK FOR SOUTH CENTRAL AND SOUTHEAST WISCONSIN... SEVERE THUNDERSTORMS ARE EXPECTED TO DEVELOP AFTER 300 PM CST ACROSS SOUTHEAST AND SOUTH CENTRAL WISCONSIN. DAMAGING WINDS ARE EXPECTED WITH THESE STORMS. A COLD FRONT MOVING EAST ACROSS WISCONSIN...COMBINED WITH MOIST UNSTABLE AIR AND A STRONG JET STREAM AT THE UPPER LEVELS...WILL PRODUCE SEVERE STORMS THIS AFTERNOON. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL TELEVISION AND RADIO FOR LATER WATCHES...WARNINGS AND STATEMENTS. EISE WWW.CRH.NOAA.GOV/MKX
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 11, 12:26 PM CST | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 64 min |
| Feb 11, 1:31 PM CST | Severe Thunderstorm Warning | MKX | Columbia | 44 min |
| Feb 11, 1:41 PM CST | Severe Thunderstorm Warning | MKX | Green Lake, Marquette | 64 min |
| Feb 11, 2:23 PM CST | Severe Thunderstorm Warning | MKX | Jefferson, Walworth | 32 min |
| Feb 11, 2:30 PM CST | Severe Thunderstorm Warning | MKX | Dodge, Waukesha | 45 min |
| Feb 11, 2:40 PM CST | Severe Thunderstorm Warning | MKX | Washington | 40 min |
| Feb 11, 2:58 PM CST | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Racine | 32 min |
| Feb 11, 3:01 PM CST | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan | 34 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.