Alert archive / North Dakota / Tornado Warnings in 2002
Tornado Warning 22, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 23, 2002, 6:20 PM CDT for Pembina County, North Dakota. It was in force for 40 min. 4 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
- Aug 23, 2002, 6:20 PM CDT (23:20 UTC)
- Expired
- Aug 23, 2002, 7:00 PM CDT
- In force
- 40 min
- Issued by
- NWS Grand Forks, ND
- Area
- Counties, with a storm outline in the text
County Pembina County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 131 km from the middle of the area, began a volume at 23:22 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 23, 6:28 PM CDT | Hail 1 | Mountain, ND | |
| Aug 23, 6:30 PM CDT | Tornado F0 | Mountain, ND | A brief tornado touchdown was reported. |
| Aug 23, 6:35 PM CDT | Hail 2 | Mountain, ND | |
| Aug 23, 6:50 PM CDT | Hail 1.75 | Crystal, ND |
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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.3 hours before the alert went out and 305 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 855 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
245 WFUS53 KFGF 232320 TORFAR NDC067-240000- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 620 PM CDT FRI AUG 23 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN PEMBINA COUNTY IN NORTHEAST NORTH DAKOTA. * UNTIL 700 PM CDT. * AT 616 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM WITH STRONG ROTATION 2 MILES NORTHWEST OF MOUNTAIN...OR ABOUT 22 MILES EAST OF LANGDON...MOVEMENT WAS TO THE SOUTHEAST AT 20 MPH. * THE TORNADO WILL BE NEAR... MOUNTAIN AT 625 PM... GARDAR AT 635 PM AND CRYSTAL AT 650 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 4883 9789 4857 9790 4855 9773 4856 9737 30 NNNN
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 4:52 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 38 min |
| Aug 23, 5:07 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 38 min |
| Aug 23, 5:30 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 45 min |
| Aug 23, 5:42 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 48 min |
| Aug 23, 5:44 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 46 min |
| Aug 23, 6:13 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 47 min |
| Aug 23, 6:32 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey | 43 min |
| Aug 23, 6:43 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 47 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.