Alert archive / Wisconsin / Tornado Warnings in 2002

Tornado Warning 3, NWS Duluth, MN

April 18, 2002Iron County, Wisconsin

NWS Duluth, MN issued this tornado warning at Apr 18, 2002, 6:19 PM CDT for Iron County, Wisconsin. It was in force for 56 min. 1 report 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: Apr 18, 2002, 6:19 PM CDT (23:19 UTC)
Expired: Apr 18, 2002, 7:15 PM CDT
In force: 56 min
Issued by: NWS Duluth, MN
Area: Counties, with a storm outline in the text

County Iron County, WI

The radar

The Duluth radar (KDLH), 181 km from the middle of the area, began a volume at 23:20 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
Apr 18, 6:20 PM CDT	Hail 1.75	Mercer, WI

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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.3 hours before the alert went out and 239 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1774 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 460 m²/s²
0-3 km storm-relative helicity: 766 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDLH 182319
TORDLH
WIC051-190015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DULUTH MN
618 PM CDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN IRON COUNTY IN NORTHWEST WISCONSIN

* UNTIL 715 PM CDT

* AT 618 PM CDT DOPPLER RADAR INDICATED A TORNADO 8 MILES SOUTHWEST
  OF MANITOWISH...OR ABOUT 17 MILES NORTHEAST OF PARK FALLS...MOVING
  NORTHEAST AT 35 MPH.

* THIS TORNADO WILL BE NEAR...
  MANITOWISH AROUND 635 PM CDT...

THIS TORNADO WARNING REPLACES THE SEVERE THUNDERSTORM WARNING WHICH
WAS IN EFFECT FOR THE SAME AREA.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

.END

LAT...LON 4606 9029 4598 9018 4616 8973 4632 8996

SHIMON

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 2:33 AM CDT	Severe Thunderstorm Warning	DLH	Burnett	57 min
Apr 18, 3:43 PM CDT	Severe Thunderstorm Warning	DLH	Price	47 min
Apr 18, 4:30 PM CDT	Severe Thunderstorm Warning	DLH	Price	45 min
Apr 18, 4:56 PM CDT	Severe Thunderstorm Warning	DLH	Iron	34 min
Apr 18, 5:15 PM CDT	Severe Thunderstorm Warning	DLH	Price	60 min
Apr 18, 5:37 PM CDT	Severe Thunderstorm Warning	DLH	Sawyer	38 min
Apr 18, 5:46 PM CDT	Severe Thunderstorm Warning	DLH	Iron	59 min
Apr 18, 6:10 PM CDT	Tornado Warning	DLH	Price	35 min
Apr 18, 6:13 PM CDT	Tornado Warning	DLH	Price	32 min
Apr 18, 6:16 PM CDT	Severe Thunderstorm Warning	DLH	Iron	59 min
Apr 18, 6:44 PM CDT	Tornado Warning	DLH	Price	16 min

Nearby

Tornado Warnings in Wisconsin, 2002 Every tornado warning in 2002 Tornadoes in 2002

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; radar from the NEXRAD Level II archive.