Alert archive / Minnesota / Tornado Warnings in 2004

Tornado Warning 39, NWS Grand Forks, ND

July 13, 2004Otter Tail County, Wadena County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 13, 2004, 12:00 AM CDT for Otter Tail County, Wadena County, Minnesota. It was in force for 60 min. 7 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: Jul 13, 2004, 12:00 AM CDT (05:00 UTC)
Expired: Jul 13, 2004, 1:00 AM CDT
In force: 60 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

Counties Otter Tail County, MN, Wadena County, MN

The radar

The Minneapolis radar (KMPX), 207 km from the middle of the area, began a volume at 05:04 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
Jul 13, 12:35 AM CDT	HAIL 0.88	2 N Wadena, MN
Jul 13, 12:35 AM CDT	HAIL 0.88	2 N Wadena, MN
Jul 13, 12:35 AM CDT	HAIL 0.88	2 N Wadena, MN
Jul 13, 12:35 AM CDT	HAIL 0.88	2 N Wadena, MN
Jul 13, 1:10 AM CDT	TSTM WND DMG	Aldrich, MN	4 TO 6 INCH DIAMTER PINE TREES DOWN LAYING ACROSS SOUTH BOUND LANE OF US HIWAY 10.
Jul 13, 1:10 AM CDT	TSTM WND DMG	Aldrich, MN	4 TO 6 INCH DIAMTER PINE TREES DOWN LAYING ACROSS SOUTH BOUND LANE OF US HIWAY 10.
Jul 13, 1:10 AM CDT	TSTM WND DMG	Aldrich, MN	4 TO 6 INCH DIAMTER PINE TREES DOWN LAYING ACROSS SOUTH BOUND LANE OF US HIWAY 10.

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
Jul 12, 9:50 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.0 hours before the alert went out and 206 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: 1267 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1215 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 130500
TORFGF
MNC111-159-130600-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1200 AM CDT TUE JUL 13 2004

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  SOUTHERN WADENA COUNTY IN CENTRAL MINNESOTA
  EAST CENTRAL OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA

* UNTIL 100 AM CDT.

* AT 1153 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 7 MILES WEST OF NEW YORK
  MILLS...OR ABOUT 24 MILES SOUTHEAST OF DETROIT LAKES...MOVING TO
  THE EAST AT 55 MPH.

* THE TORNADO WILL BE NEAR...

  BLUFFTON AT 1210 AM...
  WADENA AT 1215 AM...
  VERNDALE AT 1220 AM AND
  ALDRICH AT 1225 AM.

THIS STORM HAS A HISTORY OF TORNADOES AND TENNIS BALL SIZE HAIL.

THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH OF THIS TORNADO
ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING.

LAT...LON 4662 9550 4645 9556 4615 9411 4641 9401

$$
DK

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 12, 8:49 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	56 min
Jul 12, 10:02 PM CDT	Tornado Warning	FGF	Clay	58 min
Jul 12, 10:19 PM CDT	Tornado Warning	FGF	Clay	41 min
Jul 12, 10:55 PM CDT	Tornado Warning	FGF	Becker, Otter Tail	65 min
Jul 12, 10:59 PM CDT	Tornado Warning	FGF	Clay	46 min

Nearby

Tornado Warnings in Minnesota, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.