Alert archive / Iowa / Tornado Warnings in 2004
Tornado Warning 62, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Sep 5, 2004, 4:57 PM CDT for Dickinson County, Iowa; Jackson County, Minnesota. It was in force for 33 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
- Sep 5, 2004, 4:57 PM CDT (21:57 UTC)
- Expired
- Sep 5, 2004, 5:30 PM CDT
- In force
- 33 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Counties, with a storm outline in the text
Counties Dickinson County, IA, Jackson County, MN
The radar
The Sioux Falls radar (KFSD), 120 km from the middle of the area, began a volume at 21:57 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 |
|---|---|---|---|
| Sep 5, 5:08 PM CDT | TORNADO | 4 W Spirit Lake, IA | LAW ENFORCEMENT REPORTED TORNADO ON GROUND NEAR VICKS CORNER. |
| Sep 5, 5:15 PM CDT | TORNADO | 8 Nw Spirit Lake, MN | TORNADO ON GROUND BETWEEN LITTLE SPIRIT LAKE AND HWY 86. |
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 |
|---|---|---|---|
| Sep 5, 3:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.0 hours before the alert went out and 204 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
- 246 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 698 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 329 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFSD 052157 TORFSD IAC059-MNC063-052230- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 456 PM CDT SUN SEP 5 2004 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... NORTHERN DICKINSON COUNTY IN NORTHWEST IOWA SOUTHERN JACKSON COUNTY IN SOUTHWEST MINNESOTA * UNTIL 530 PM CDT * AT 455 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES SOUTHWEST OF SPIRIT LAKE...MOVING NORTH AT 35 MPH. * THE TORNADO WILL BE NEAR... RURAL JACKSON COUNTY THROUGH 510 PM CDT RURAL DICKINSON COUNTY THROUGH 510 PM CDT TAKE COVER NOW. THIS TORNADO IS WRAPPED IN RAIN. IF YOU WAIT TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SUNDAY EVENING FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA. LAT...LON 4335 9540 4334 9521 4360 9500 4363 9525 $$ CPJ
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 3:17 PM CDT | Tornado Warning | FSD | Cherokee, Ida, Plymouth, Woodbury | 28 min |
| Sep 5, 3:30 PM CDT | Tornado Warning | FSD | Lyon, Osceola | 45 min |
| Sep 5, 3:44 PM CDT | Tornado Warning | FSD | Cherokee, O'Brien | 46 min |
| Sep 5, 4:33 PM CDT | Tornado Warning | FSD | Clay, Dickinson, O'Brien, Osceola | 27 min |
| Sep 5, 5:33 PM CDT | Tornado Warning | FSD | Jackson | 12 min |
Nearby
Tornado Warnings in Iowa, 2004Tornado Warnings in Minnesota, 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.