Alert archive / North Dakota / Tornado Warnings in 2002
Tornado Warning 16, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 8, 2002, 7:30 PM CDT for Traill County, North Dakota. It was in force for 45 min. 1 report 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
- Aug 8, 2002, 7:30 PM CDT (00:30 UTC)
- Expired
- Aug 8, 2002, 8:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 17 km from the middle of the area, began a volume at 00:33 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 |
|---|---|---|---|
| Aug 8, 8:15 PM CDT | Thunderstorm Wind | Mayville, ND | A 61 foot grain auger was blown over. |
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 |
|---|---|---|---|
| Aug 8, 3:10 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.5 hours before the alert went out and 284 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
- 863 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 1927 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
768 WFUS53 KFGF 090030 TORFAR NDC097-090115- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 730 PM CDT THU AUG 8 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... EASTERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 815 PM CDT. * AT 728 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES NORTH OF HILLSBORO...OR ABOUT 32 MILES SOUTH OF GRAND FORKS...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH. * THE TORNADO WILL BE NEAR... CALEDONIA AT 740 PM. THIS IS A DANGEROUS STORM. IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM THURSDAY EVENING FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA. LAT...LON 4766 9729 4727 9714 4729 9688 4766 9692 77 NNNN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 7:23 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 37 min |
| Aug 8, 7:31 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 44 min |
| Aug 8, 8:37 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 38 min |
| Aug 8, 9:59 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 46 min |
| Aug 8, 10:34 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Eddy | 41 min |
| Aug 8, 11:05 PM CDT | Severe Thunderstorm Warning | FGF | Griggs | 40 min |
| Aug 8, 11:15 PM CDT | Severe Thunderstorm Warning | FGF | Benson, Nelson, Ramsey | 60 min |
| Aug 8, 11:26 PM CDT | Tornado Warning | FGF | Benson | 49 min |
| Aug 8, 11:29 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 46 min |
| Aug 9, 12:19 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey | 41 min |
| Aug 9, 12:21 AM CDT | Flash Flood Warning | FGF | Walsh | 6 hr |
| Aug 9, 12:24 AM CDT | Severe Thunderstorm Warning | FGF | Towner | 51 min |
| Aug 9, 12:56 AM CDT | Severe Thunderstorm Warning | FGF | Pembina | 49 min |
| Aug 9, 12:59 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 46 min |
Nearby
Tornado Warnings in North Dakota, 2002Every tornado warning in 2002Tornadoes in 2002
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; radar from the NEXRAD Level II archive.