Alert archive / Wisconsin / Tornado Warnings in 2004

Tornado Warning 2, NWS Duluth, MN

April 18, 2004Burnett County, Wisconsin

NWS Duluth, MN issued this tornado warning at Apr 18, 2004, 4:41 PM CDT for Burnett County, Wisconsin. It was in force for 64 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: Apr 18, 2004, 4:41 PM CDT (21:41 UTC)
Expired: Apr 18, 2004, 5:45 PM CDT
In force: 64 min
Issued by: NWS Duluth, MN
Area: Counties, with a storm outline in the text

County Burnett County, WI

The radar

The Duluth radar (KDLH), 91 km from the middle of the area, began a volume at 21:41 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
Apr 18, 1:40 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.7 hours before the alert went out and 163 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 680 J/kg
Mixed-layer CIN: -274 J/kg
Mixed-layer LCL: 697 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 361 m²/s²
0-3 km storm-relative helicity: 401 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

879 
WFUS53 KDLH 182141
TORDLH
WIC013-182245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DULUTH MN
440 PM CDT SUN APR 18 2004

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  BURNETT COUNTY IN NORTHWEST WISCONSIN

* UNTIL 545 PM CDT

* AT 440 PM CDT...DOPPLER RADAR INDICATED A DEVELOPING TORNADO 23
  MILES WEST OF YELLOWLAKE...OR ABOUT 10 MILES SOUTHEAST OF
  HINCKLEY...MOVING NORTHEAST AT 45 MPH.

* THIS TORNADO WILL BE NEAR...
  YELLOWLAKE AROUND 505 PM CDT...
  DANBURY AROUND 510 PM CDT...
  RIVERSIDE AROUND 520 PM CDT...

THIS STORM HAS A ROTATING WALL CLOUD. THIS STORM COULD DROP A 
TORNADO AT ANY MOMENT.

IF YOU ARE IN THE PATH OF THIS TORNADO...GO TO A BASEMENT OR A SMALL
INTERIOR ROOM ON THE LOWEST FLOOR IF YOU ARE IN A MOBILE HOME...
CAMPER OR ARE CAUGHT OUTDOORS SEEK STURDY SHELTER. AS A LAST
RESORT...LIE FLAT IN A DITCH AND COVER YOUR HEAD

LAT...LON 4598 9252 4589 9272 4593 9206 4616 9205
          4615 9227 4605 9231

$$
SHIMON

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 18, 2:11 AM CDT	Severe Thunderstorm Warning	DLH	Sawyer	64 min
Apr 18, 3:37 AM CDT	Severe Thunderstorm Warning	DLH	Burnett, Douglas, Washburn	53 min
Apr 18, 4:00 AM CDT	Severe Thunderstorm Warning	DLH	Bayfield	30 min
Apr 18, 4:43 AM CDT	Severe Thunderstorm Warning	DLH	Sawyer	32 min
Apr 18, 4:56 AM CDT	Severe Thunderstorm Warning	DLH	Douglas, Washburn	34 min
Apr 18, 5:20 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Sawyer	55 min
Apr 18, 7:18 AM CDT	Severe Thunderstorm Warning	DLH	Burnett	27 min
Apr 18, 7:33 AM CDT	Severe Thunderstorm Warning	DLH	Washburn	27 min
Apr 18, 7:56 AM CDT	Severe Thunderstorm Warning	DLH	Sawyer	34 min
Apr 18, 8:27 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Sawyer	48 min
Apr 18, 9:10 AM CDT	Severe Thunderstorm Warning	DLH	Price	35 min
Apr 18, 5:13 PM CDT	Severe Thunderstorm Warning	DLH	Douglas	32 min
Apr 18, 5:23 PM CDT	Tornado Warning	DLH	Washburn	67 min
Apr 18, 5:54 PM CDT	Tornado Warning	DLH	Sawyer	66 min
Apr 18, 6:32 PM CDT	Severe Thunderstorm Warning	DLH	Ashland	43 min

Nearby

Tornado Warnings in Wisconsin, 2004 Every tornado warning in 2004 Tornadoes 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.