Alert archive / Minnesota / Tornado Warnings in 2001

Tornado Warning 4, NWS Duluth, MN

May 9, 2001Pine County, Minnesota

NWS Duluth, MN issued this tornado warning at May 9, 2001, 8:55 PM CDT for Pine County, Minnesota. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 9, 2001, 8:55 PM CDT (01:55 UTC)
Expired: May 9, 2001, 9:45 PM CDT
In force: 50 min
Issued by: NWS Duluth, MN
Area: Whole counties

County Pine County, MN

What was reported inside it

Time	Report	Where	Remark
May 9, 8:56 PM CDT	Hail 0.75	Hinckley, MN

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 9, 7:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.9 hours before the alert went out and 156 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: 1211 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1740 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 368 m²/s²
0-3 km storm-relative helicity: 795 m²/s²
Significant tornado parameter: 1.1
Supercell composite: 8.0

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDLH 100155
TORDLH
MNC115-100245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DULUTH MN
855 PM CDT WED MAY 9 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  PINE COUNTY IN MINNESOTA

* UNTIL 945 PM CDT

* AT 855 PM CDT SKYWARN SPOTTERS REPORTED A DEVELOPING TORNADO       
  OVER HINCKLEY...MOVING EAST AT 30 MPH.

* THIS TORNADO WILL BE NEAR...
  CLOVERDALE AROUND 910 PM CDT
  DUXBURY AROUND 930 PM CDT
  MARKVILLE AROUND 945 PM CDT

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

$$

LAT...LON 4612 9304 4594 9303 4595 9260 4603 9237
          4614 9230

SCW

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 7:04 PM CDT	Severe Thunderstorm Warning	DLH	Pine	41 min
May 9, 7:44 PM CDT	Severe Thunderstorm Warning	DLH	Pine	61 min
May 9, 7:57 PM CDT	Tornado Warning	DLH	Pine	48 min
May 9, 8:44 PM CDT	Severe Thunderstorm Warning	DLH	Pine	46 min

Nearby

Tornado Warnings in Minnesota, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.