Alert archive / Iowa / Tornado Warnings in 1998
Tornado Warning 12, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Jun 18, 1998, 4:18 PM CDT for Winneshiek County, Iowa. It was in force for 42 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
- Jun 18, 1998, 4:18 PM CDT (21:18 UTC)
- Expired
- Jun 18, 1998, 5:00 PM CDT
- In force
- 42 min
- Issued by
- NWS La Crosse, WI
- Area
- Whole counties
County Winneshiek County, IA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 18, 4:45 PM CDT | Thunderstorm Wind | Hesper, 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 |
|---|---|---|---|
| Jun 18, 2:10 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 9.3 hours before the alert went out and 216 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
- 2000 J/kg
- Mixed-layer CIN
- -220 J/kg
- Mixed-layer LCL
- 1205 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
300 WFUS1 KLSE 182120 RRA TORLSE IAC191-182200- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 418 PM CDT THU JUN 18 1998 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * TORNADO WARNING FOR... WINNESHIEK COUNTY IN NORTHEASTERN IOWA * UNTIL 500 PM CDT * AT 415 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO NEAR KENDALLVILLE OR 15 MILES NORTHWEST OF DECORAH... MOVING NORTHEAST AT 35 MPH. * THE TORNADO WILL BE NEAR... BURR OAK AT 425 PM THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING WHICH HAD BEEN ISSUED EARLIER FOR WINNESHIEK COUNTY. GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR KING/RRS
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 10:48 AM CDT | Severe Thunderstorm Warning | ARX | Clayton | 42 min |
| Jun 18, 3:20 PM CDT | Tornado Warning | ARX | Chickasaw | 50 min |
| Jun 18, 3:38 PM CDT | Tornado Warning | ARX | Howard | 47 min |
| Jun 18, 4:02 PM CDT | Severe Thunderstorm Warning | ARX | Fayette, Winneshiek | 58 min |
| Jun 18, 4:22 PM CDT | Tornado Warning | ARX | Howard | 33 min |
| Jun 18, 4:25 PM CDT | Tornado Warning | ARX | Clayton | 65 min |
| Jun 18, 4:30 PM CDT | Flash Flood Warning | ARX | Chickasaw, Howard | 4 hr |
| Jun 18, 4:37 PM CDT | Severe Thunderstorm Warning | ARX | Allamakee | 63 min |
Nearby
Tornado Warnings in Iowa, 1998Every tornado warning in 1998Tornadoes in 1998
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.