Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 245, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 30, 2000, 8:57 PM CDT for Ransom County, North Dakota. It was in force for 28 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Aug 30, 2000, 8:57 PM CDT (01:57 UTC)
- Expired
- Aug 30, 2000, 9:25 PM CDT
- In force
- 28 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Ransom County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 116 km from the middle of the area, began a volume at 01:57 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 30, 9:05 PM CDT | Hail 1 | Ft Ransom, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 30, 5:30 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 2.0 hours before the alert went out and 188 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
- 1902 J/kg
- Mixed-layer CIN
- -214 J/kg
- Mixed-layer LCL
- 2078 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 261 m²/s²
- 0-3 km storm-relative helicity
- 315 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.8
The text
As transmitted, in the capitals the NWS used until 2016.
178 WUUS53 KFGF 310157 SVRFAR NDC073-310225- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 857 PM CDT WED AUG 30 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 925 PM CDT * AT 852 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER FORT RANSOM...OR ABOUT 29 MILES SOUTH OF VALLEY CITY...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... ENDERLIN AT 925 PM CDT... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT WEDNESDAY EVENING FOR SOUTHEAST NORTH DAKOTA. LAT...LON 4655 9806 4640 9788 4663 9750 4663 9786 NNNN
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 30, 8:55 PM CDT, 2 minutes earlier.
Area forecast discussion, Aug 30, 8:55 PM CDT, 2 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 855 PM CDT WED AUG 30 2000 FORECAST CHALLENGE CONCERN PCPN AND TEMPS. COLD FRONT CONTINUES TRANSLATE EAST ACROSS FA. IN SPITE OF CAPPING PRIMARY SVR THREAT CONTINUES TO ACROSS SOUTHERN FA VCNTY SFC LOW OVR XTREME NE SD AND FAVORABLE CONVECTIVE PARAMETERS. FARTHER NORTH INSPITE OF INFLUENCE OF ENTRENCE REGION OF UPPER JET OVR CANADA SVR PARAMETERS NOT THERE SO WILL PULL THREAT. BACK EDGE OF PCPN PUSHING THROUGH NW COUNTIES ATTM WITH SHRA/TSRA CONTINUING OVR RRV INTO NW MINN OVERNIGHT WITH H8 LLJ INCREASING. SIG CAA BEHIND CFP DROPPING TEMPS RAPDLY HOWEVER CURRENT TEMP FCST SEEMS REASONABLE. MAIN CHANGES WILL BE TIMING OF WINDS AND PCPN. MAY HOLD OFF ON UPDATE TO NEAR 10PM TO INCORPORATE WATCH STATUS. .FGF...NONE VOELKER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 9:51 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 29 min |
| Aug 30, 10:01 PM CDT | Severe Thunderstorm Warning | FGF | Richland | 29 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2000Every severe thunderstorm warning in 2000
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.