Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 40, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 18, 2000, 1:20 PM CDT for Grant County, Wisconsin. It was in force for 40 min. 1 report 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
- May 18, 2000, 1:20 PM CDT (18:20 UTC)
- Expired
- May 18, 2000, 2:00 PM CDT
- In force
- 40 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Grant County, WI
The radar
The La Crosse radar (KARX), 104 km from the middle of the area, began a volume at 18:20 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 18, 2:04 PM CDT | Hail 0.75 | Fennimore, 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
Davenport, (KDVN), launched 12:00Z, 6.3 hours before the alert went out and 151 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
- 1779 J/kg
- Mixed-layer CIN
- -77 J/kg
- Mixed-layer LCL
- 796 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 310 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 10.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KARX 181820 SVRLSE WIC043-181900- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 120 PM CDT THU MAY 18 2000 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... GRANT COUNTY IN SOUTHWEST WISCONSIN * UNTIL 200 PM CDT * AT 120 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM PRODUCING LARGE HAIL 6 MILES SOUTHWEST OF STITZER...OR ABOUT OVER LANCASTER. THIS ACTIVITY WAS MOVING NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE... NEAR FENNIMORE AT 130 PM CDT NEAR PRESTON AT 135 PM CDT NEAR HOMER AND CASTLE ROCK AT 140 PM CDT LARGE DESTRUCTIVE HAIL IS THE MAIN THREAT WITH THESE STORMS. FOR YOUR PROTECTION...SEEK SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS. RABERDING LAT...LON 4290 9081 4282 9067 4305 9042 4319 9058
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 5:41 AM CDT | Severe Thunderstorm Warning | ARX | Vernon | 34 min |
| May 18, 5:51 AM CDT | Severe Thunderstorm Warning | ARX | Grant | 39 min |
| May 18, 6:08 AM CDT | Severe Thunderstorm Warning | ARX | Buffalo, Trempealeau | 67 min |
| May 18, 6:28 AM CDT | Severe Thunderstorm Warning | ARX | Grant | 32 min |
| May 18, 7:12 AM CDT | Severe Thunderstorm Warning | ARX | Vernon | 33 min |
| May 18, 7:33 AM CDT | Severe Thunderstorm Warning | ARX | La Crosse | 42 min |
| May 18, 7:58 AM CDT | Severe Thunderstorm Warning | ARX | Jackson, Monroe | 62 min |
| May 18, 2:00 PM CDT | Severe Thunderstorm Warning | ARX | Grant | 30 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2000Every severe thunderstorm warning in 2000
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.