Alert archive / Iowa / Tornado Warnings in 2004
Tornado Warning 21, NWS La Crosse, WI
NWS La Crosse, WI issued this tornado warning at Jul 5, 2004, 6:33 PM CDT for Fayette County, Iowa. It was in force for 27 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 5, 2004, 6:33 PM CDT (23:33 UTC)
- Expired
- Jul 5, 2004, 7:00 PM CDT
- In force
- 27 min
- Issued by
- NWS La Crosse, WI
- Area
- Counties, with a storm outline in the text
County Fayette County, IA
The radar
The La Crosse radar (KARX), 118 km from the middle of the area, began a volume at 23:33 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 |
|---|---|---|---|
| Jul 5, 6:35 PM CDT | TORNADO | 1 N Arlington, IA | TORNADO TOUCHED DOWN BRIEFLY IN A CORN FIELD |
| Jul 5, 6:35 PM CDT | TORNADO | 1 N Arlington, IA | TORNADO TOUCHED DOWN BRIEFLY IN A CORN FIELD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 5, 4:20 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.6 hours before the alert went out and 168 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
- 477 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1211 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 12 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.
000 WFUS53 KARX 052333 TORARX IAC065-060000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE LA CROSSE WI 633 PM CDT MON JUL 5 2004 THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A * TORNADO WARNING FOR... EASTERN FAYETTE COUNTY IN NORTHEAST IOWA * UNTIL 700 PM CDT * AT 633 PM CDT...NATIONAL WEATHER SERVICE RADAR DETECTED A TORNADO 3 MILES NORTH OF ARLINGTON...OR ABOUT 14 MILES SOUTHEAST OF WEST UNION. THE TORNADO WAS MOVING NORTH AT 15 MPH. * THE TORNADO WILL BE NEAR... WADENA AROUND 640 PM CDT... ALBANY AROUND 645 PM CDT... BRAINARD AROUND 655 PM CDT... A TORNADO IS BEING DETECTED BY RADAR. THIS MEANS THAT A TORNADO MAY NOT BE OCCURRING WHEN THE WARNING IS ISSUED...BUT ONE IS EXPECTED TO DEVELOP. TAKE COVER IN A BASEMENT OR IN AN INTERIOR ROOM ON THE LOWEST FLOOR AND STAY AWAY FROM WINDOWS CARS AND MOBILE HOMES SHOULD BE ABANDONED FOR A STURDY BUILDING. AS A LAST RESORT...LAY FLAT IN A DITCH AND COVER YOUR HEAD. LAT...LON 4271 9178 4273 9161 4306 9162 4297 9181 $$ THOMPSON
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 4:39 PM CDT | Flash Flood Warning | ARX | Fayette | 4 hr |
| Jul 5, 5:13 PM CDT | Tornado Warning | ARX | Fayette | 32 min |
| Jul 5, 5:52 PM CDT | Tornado Warning | ARX | Howard | 38 min |
Nearby
Tornado Warnings in Iowa, 2004Every tornado warning in 2004Tornadoes in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.