Alert archive / North Dakota / Tornado Warnings in 2004

Tornado Warning 32, NWS Grand Forks, ND

July 10, 2004Cass County, North Dakota; Clay County, Minnesota

NWS Grand Forks, ND issued this tornado warning at Jul 10, 2004, 8:30 AM CDT for Cass County, North Dakota; Clay County, Minnesota. It was in force for 45 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: Jul 10, 2004, 8:30 AM CDT (13:30 UTC)
Expired: Jul 10, 2004, 9:15 AM CDT
In force: 45 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

Counties Clay County, MN, Cass County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 92 km from the middle of the area, began a volume at 13:31 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 1.5 hours before the alert went out and 242 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: 1097 J/kg
Mixed-layer CIN: -195 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 180 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 101330
TORFGF
MNC027-NDC017-101415-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
829 AM CDT SAT JUL 10 2004

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  SOUTHWESTERN CLAY COUNTY IN NORTHWEST MINNESOTA
  SOUTHEASTERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA

* UNTIL 915 AM CDT.

* AT 823 AM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION OVER WILD RICE...OR ABOUT
  9 MILES SOUTH OF FARGO...MOVING TO THE EAST AT 20 MPH.

  SPOTTERS HAVE INDICATED A WALL CLOUD WITH STRONG ROTATION JUST 
  EAST OF DAVENPORT...WITH A NEEDLE FUNNEL EXTENDING FROM IT.

* THE TORNADO WILL BE NEAR...

  RUSTAD AT 830 AM...
  DILWORTH AT 835 AM...
  SABIN AT 840 AM AND
  BAKER AT 845 AM.

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 4686 9704 4666 9704 4664 9647 4688 9651

$$

55

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 6:50 AM CDT	Severe Thunderstorm Warning	FGF	Cass	40 min
Jul 10, 7:48 AM CDT	Tornado Warning	FGF	Cass	42 min
Jul 10, 8:33 AM CDT	Flash Flood Warning	FGF	Cass	4 hr
Jul 10, 2:12 PM CDT	Severe Thunderstorm Warning	FGF	Roseau	48 min
Jul 10, 2:55 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	50 min
Jul 10, 4:00 PM CDT	Severe Thunderstorm Warning	FGF	Lake of the Woods	45 min

Nearby

Tornado Warnings in North Dakota, 2004 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.