Alert archive / North Dakota / Tornado Warnings in 2004

Tornado Warning 18, NWS Grand Forks, ND

May 19, 2004Cass County, North Dakota

NWS Grand Forks, ND issued this tornado warning at May 19, 2004, 7:01 PM CDT for Cass County, North Dakota. It was in force for 44 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: May 19, 2004, 7:01 PM CDT (00:01 UTC)
Expired: May 19, 2004, 7:45 PM CDT
In force: 44 min
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

County Cass County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 52 km from the middle of the area, began a volume at 00:03 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
May 19, 3:00 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.0 hours before the alert went out and 256 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: 1154 J/kg
Mixed-layer CIN: -8 J/kg
Mixed-layer LCL: 1128 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: -64 m²/s²
0-3 km storm-relative helicity: 0 m²/s²
Significant tornado parameter: -0.7
Supercell composite: -4.5

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFGF 200001
TORFGF
NDC017-200045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
700 PM CDT WED MAY 19 2004

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* TORNADO WARNING FOR...

  NORTHERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA

* UNTIL 745 PM CDT.

* AT 659 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 3 MILES NORTHEAST OF
  ABSARAKA...OR ABOUT 27 MILES WEST OF FARGO...MOVING TO THE
  NORTHEAST AT 35 MPH.

* THE TORNADO WILL BE NEAR...

  AMENIA AT 705 PM...
  ARTHUR AT 710 PM...
  GARDNER AT 730 PM AND
  GRANDIN AT 735 PM.

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 4706 9753 4690 9740 4704 9686 4724 9700

$$

VOELKER/04

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 7:15 PM CDT	Tornado Warning	FGF	Walsh	60 min
May 19, 7:34 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	56 min
May 19, 7:50 PM CDT	Tornado Warning	FGF	Cass	40 min
May 19, 8:44 PM CDT	Severe Thunderstorm Warning	FGF	Grand Forks	61 min

Nearby

Tornado Warnings in North Dakota, 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.