Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 94, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Oct 23, 2001, 11:57 PM CDT for Kenosha County, Racine County, Walworth County, Wisconsin. It was in force for 63 min. 3 reports came from 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, with what was reported inside it.
The facts
- Issued
- Oct 23, 2001, 11:57 PM CDT (04:57 UTC)
- Expired
- Oct 24, 2001, 1:00 AM CDT
- In force
- 63 min
- Issued by
- NWS Milwaukee, WI
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Kenosha County, WI, Racine County, WI, Walworth County, WI
The radar
The Milwaukee radar (KMKX), 39 km from the middle of the area, began a volume at 04:58 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 |
|---|---|---|---|
| Oct 24, 12:00 AM CDT | Hail 1 | Lyons, WI | |
| Oct 24, 12:15 AM CDT | Hail 0.75 | Burlington, WI | |
| Oct 24, 12:29 AM CDT | Hail 0.75 | Paris, 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 00:00Z, 5.0 hours before the alert went out and 197 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
856 WUUS53 KMKX 240458 SVRMKE WIC059-101-127-240600- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE-SULLIVAN WI 1157 PM CDT TUE OCT 23 2001 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EASTERN WALWORTH COUNTY IN SOUTHEAST WISCONSIN RACINE COUNTY IN SOUTHEAST WISCONSIN KENOSHA COUNTY IN SOUTHEAST WISCONSIN * UNTIL 100 AM CDT * AT 1157 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES WEST OF BURLINGTON...OR ABOUT 5 MILES NORTH OF LAKE GENEVA...MOVING EAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BURLINGTON AT 1205 AM CDT. ROCHESTER AT 1210 AM CDT. EAGLE LAKE AT 1215 AM CDT. UNION GROVE AT 1220 AM CDT. IF YOU ARE IN THE PATH OF THIS STORM...YOU SHOULD PREPARE FOR DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...AND DEADLY LIGHTNING. SEEK SHELTER IMMEDIATELY LAT...LON 4279 8851 4260 8850 4254 8786 4282 8781 & 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.
NWS Milwaukee, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 23, 3:30 PM CDT, 8 hours 27 minutes earlier.
Area forecast discussion, Oct 23, 3:30 PM CDT, 8 hours 27 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 330 PM CDT TUE OCT 23 2001 FCST FOCUS ON PRECIP CHANCES AND SURGE OF CAA. SFC ANALYSES HAVE BEEN SHOWING A CONSISTENT 3-4 MB FALLS ACROSS SD TODAY AS SHORT WAVE TROUGH TRACKS ACROSS MT. AS LOW APPROACHES WI BY 12Z A 25-30 KT LLJ WILL SET UP OVER SRN WI WITH SOME THETAE ADVECTION INTO CWA. NOT NEARLY AS STRONG AS LAST NIGHT AND LESS MOISTURE SO CHANCE POPS WILL COVER IT. MODELS CONTINUE TO SHOW BOMBOGENSIS OVER NRN GRTLKS AND CANADA WED NT. BEFOREHAND...UPPER TROUGH WILL DIG SEWD TONIGHT AND THEN LIFT NEWD ON WED VIA A 120 KT JET. WITH CYCLOGENSIS CONTINUING AND CONTINUED CAA INTO UPPER TROUGH...THE UPPER TROUGH WILL BECOME NEGATIVE TILT WITH MAIN VORT MAX TRACKING ACROSS EITHER NRN IL OR SRN WI. AS INCREASING DIFF CVA AND LT FNT QUAD OF JET CATCHES UP TO FRONT...WIDESPREAD PRECIP SHOULD DEVELOP VIA MODEL QPF. THE CATCHING UP OF THE UPPER TROUGH TO THE FRONT SHOULD OCCUR IN TIME FOR LIKELY TO CATEGORICAL POPS ACROSS CWA. CATEGORICAL POPS IN EAST WHERE CONFIDENCE IS HIGH AND 60 POPS IN WEST WHERE MORE UNCERTAINTY LIES. STRONG COLD FRONT WILL MOVE ACROSS CWA WED AFT...BUT STRONGEST CAA TO OCCUR WED NT AS BOMBOGENESIS OCCURS IN SRN CANADA. WINDY CONDITIONS WILL DEVELOP AND THICKNESSES WILL DROP TO 531 DM BY THU MORNING. WITH A MOIST BL COMBINED WITH CYCLONIC FLOW AND EXPECTED ROUNDS OF WK VORT LOBES AND SFC TROFS PASSING THROUGH CWA...30 POPS ARE WARRANTED FROM WED NT THROUGH FRI. EXPECT A MIX OF RAIN AND SNOW SHOWERS. GUIDANCE TEMPS LOOK GOOD BUT A LITTLE TOO WARM ON FRI IN THE EAST. .MKX...NONE. MG
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 23, 9:31 PM CDT | Severe Thunderstorm Warning | MKX | Green | 59 min |
| Oct 23, 9:58 PM CDT | Severe Thunderstorm Warning | MKX | Rock | 62 min |
| Oct 23, 10:26 PM CDT | Severe Thunderstorm Warning | MKX | Green | 49 min |
| Oct 23, 10:45 PM CDT | Tornado Warning | MKX | Rock | 60 min |
| Oct 23, 11:02 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 58 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2001Every severe thunderstorm warning in 2001
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.