Alert archive / North Dakota / Tornado Warnings in 2004
Tornado Warning 33, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 10, 2004, 8:29 PM CDT for Cass County, North Dakota. It was in force for 61 min. 2 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 10, 2004, 8:29 PM CDT (01:29 UTC)
- Expired
- Jul 10, 2004, 9:30 PM CDT
- In force
- 61 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), 57 km from the middle of the area, began a volume at 01:31 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 10, 8:35 PM CDT | HAIL 0.75 | 2 W Amenia, ND | |
| Jul 10, 9:29 PM CDT | HAIL 1 | 5 N Casselton, ND |
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 10, 3:55 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.5 hours before the alert went out and 252 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.
- Mixed-layer CAPE
- 3042 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1287 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFGF 110129 TORFGF NDC017-110230- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 829 PM CDT SAT JUL 10 2004 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA * UNTIL 930 PM CDT. * AT 822 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES NORTHWEST OF CASSELTON...OR ABOUT 21 MILES WEST OF FARGO...MOVING TO THE NORTHEAST AT 15 MPH. * THE TORNADO WILL BE NEAR... AMENIA AT 835 PM... ARTHUR AT 850 PM... HUNTER AT 910 PM AND GARDNER AT 920 PM. HAIL UP TO TENNIS BALL SIZE IS ALSO POSSIBLE WITH THIS STORM. 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 4695 9742 4684 9721 4713 9686 4722 9727 $$ DK
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 8:10 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass | 65 min |
| Jul 10, 9:04 PM CDT | Flash Flood Warning | FGF | Cass | 12 hr |
| Jul 10, 10:27 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 48 min |
Nearby
Tornado Warnings in North Dakota, 2004Every tornado warning in 2004Tornadoes 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.