Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 178, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 8, 2002, 5:46 PM CDT for Traill County, North Dakota. It was in force for 44 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, 5:46 PM CDT (22:46 UTC)
- Expired
- Aug 8, 2002, 6:30 PM CDT
- In force
- 44 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), 9 km from the middle of the area, began a volume at 22:46 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, 6:15 PM CDT | Thunderstorm Wind 52 E | Buxton, ND | Tree damage was reported. |
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 12:00Z, 10.8 hours before the alert went out and 277 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
- 274 J/kg
- Mixed-layer CIN
- -305 J/kg
- Mixed-layer LCL
- 1167 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
518 WUUS53 KFGF 082246 SVRFAR NDC097-082330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 545 PM CDT THU AUG 8 2002 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 630 PM CDT. * AT 541 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 21 MILES SOUTHWEST OF GRAND FORKS TO 38 MILES NORTHWEST OF FARGO... MOVEMENT WAS TO THE NORTHEAST AT 20 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... KELSO AT 555 PM... HILLSBORO AT 605 PM AND CUMMINGS AT 610 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM THURSDAY EVENING FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA. LAT...LON 4764 9743 4729 9734 4731 9690 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, 2:54 PM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 51 min |
| Aug 8, 3:36 PM CDT | Severe Thunderstorm Warning | FGF | Nelson | 39 min |
| Aug 8, 3:56 PM CDT | Severe Thunderstorm Warning | FGF | Walsh | 49 min |
| Aug 8, 4:09 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 51 min |
| Aug 8, 4:37 PM CDT | Tornado Warning | FGF | Grand Forks | 38 min |
| Aug 8, 5:00 PM CDT | Severe Thunderstorm Warning | FGF | Steele, Traill | 45 min |
| Aug 8, 5:25 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 65 min |
| Aug 8, 6:24 PM CDT | Severe Thunderstorm Warning | FGF | Steele | 51 min |
| Aug 8, 6:44 PM CDT | Flash Flood Warning | FGF | Traill | 6 hr |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2002Every severe thunderstorm warning 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.