Alert archive / Iowa / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 10, NWS La Crosse, WI
NWS La Crosse, WI issued this severe thunderstorm warning at May 11, 2000, 8:12 PM CDT for Fayette County, Iowa. It was in force for 78 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
- May 11, 2000, 8:12 PM CDT (01:12 UTC)
- Expired
- May 11, 2000, 9:30 PM CDT
- In force
- 78 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Fayette County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 11, 8:15 PM CDT | Thunderstorm Wind 61 M | Fairbank, IA | |
| May 11, 8:20 PM CDT | Hail 0.75 | Oelwein, IA | |
| May 11, 8:30 PM CDT | Hail 1.75 | Oelwein, IA |
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 |
|---|---|---|---|
| May 11, 6:45 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.2 hours before the alert went out and 169 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
- 2323 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1261 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 171 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 13.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KARX 120113 SVRLSE IAC065-120230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 812 PM CDT THU MAY 11 2000 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN FAYETTE COUNTY IN NORTHEAST IOWA * UNTIL 930 PM CDT * AT 812 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LARGE SEVERE THUNDERSTORM...FROM FAIRBANK TO OELWEIN. THE STORM WAS MOVING EAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE... NEAR MAYNARD AT 825 PM CDT NEAR STANLEY AT 830 PM CDT NEAR ARLINGTON AT 910 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. A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT. A TORNADO IS OCCURRING JUST SOUTH OF THE AREA. REMEMBER...SEVERE THUNDERSTORMS CAN OCCASIONALLY PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. WELVAERT LAT...LON 4281 9209 4258 9208 4261 9161 4284 9161
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 7:00 PM CDT | Severe Thunderstorm Warning | ARX | Chickasaw | 30 min |
| May 11, 7:15 PM CDT | Severe Thunderstorm Warning | ARX | Fayette | 60 min |
| May 11, 7:58 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 62 min |
| May 11, 8:25 PM CDT | Tornado Warning | ARX | Clayton | 35 min |
| May 11, 8:50 PM CDT | Severe Thunderstorm Warning | ARX | Winneshiek | 40 min |
| May 12, 6:13 AM CDT | Severe Thunderstorm Warning | ARX | Allamakee, Winneshiek | 32 min |
| May 12, 6:43 AM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 62 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 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.