Alert archive / Minnesota / Tornado Warnings in 2004
Tornado Warning 50, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Oct 29, 2004, 6:31 PM CDT for Isanti County, Minnesota. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 29, 2004, 6:31 PM CDT (23:31 UTC)
- Expired
- Oct 29, 2004, 7:00 PM CDT
- In force
- 29 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Isanti County, MN
The radar
The Minneapolis radar (KMPX), 89 km from the middle of the area, began a volume at 23:30 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Oct 29, 3:35 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.5 hours before the alert went out and 89 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
- 1021 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 508 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KMPX 292331 TORMPX MNC059-300000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 628 PM CDT FRI OCT 29 2004 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * TORNADO WARNING FOR... ISANTI COUNTY IN EAST CENTRAL MINNESOTA * UNTIL 700 PM CDT * AT 625 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO JUST WEST OF CAMBRIDGE MOVING NORTHEAST AT 35 MPH. THIS STORM DID PRODUCE A FUNNEL CLOUD JUST NORTH OF THE ISANTI...ANOKA COUNTY LINE AT 610 PM. * LOCATIONS IMPACTED INCLUDE... CAMBRIDGE. GRANDY. STANCHFIELD. BRAHAM. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. LAT...LON 4571 9341 4547 9341 4551 9315 4573 9316 $$ MBK
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 5:21 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Scott | 24 min |
| Oct 29, 5:40 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 35 min |
| Oct 29, 5:44 PM CDT | Severe Thunderstorm Warning | MPX | Scott | 26 min |
| Oct 29, 5:53 PM CDT | Tornado Warning | MPX | Benton, Morrison | 52 min |
| Oct 29, 5:57 PM CDT | Severe Thunderstorm Warning | MPX | Anoka | 33 min |
| Oct 29, 5:59 PM CDT | Severe Thunderstorm Warning | MPX | Isanti | 61 min |
| Oct 29, 6:03 PM CDT | Tornado Warning | MPX | Isanti | 27 min |
| Oct 29, 6:10 PM CDT | Severe Thunderstorm Warning | MPX | Steele | 20 min |
| Oct 29, 6:33 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 42 min |
| Oct 29, 6:38 PM CDT | Tornado Warning | MPX | Kanabec | 22 min |
| Oct 29, 6:48 PM CDT | Tornado Warning | MPX | Chisago | 42 min |
Nearby
Tornado 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.