Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 253, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 2, 2000, 1:40 PM CDT for Ransom County, North Dakota. It was in force for 30 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
- Sep 2, 2000, 1:40 PM CDT (18:40 UTC)
- Expired
- Sep 2, 2000, 2:10 PM CDT
- In force
- 30 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), 102 km from the middle of the area, began a volume at 18:41 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 |
|---|---|---|---|
| Sep 2, 1:45 PM CDT | Hail 1 | Enderlin, 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
Aberdeen, SD (KABR), launched 12:00Z, 6.7 hours before the alert went out and 203 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
- 1 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 516 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 91 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 021845 COR SVRFAR NDC017-073-021910- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING ... CORRECTED... NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 140 PM CDT SAT SEP 2 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 210 PM CDT * AT 135 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES WEST OF ANSELM...OR ABOUT 34 MILES SOUTHEAST OF VALLEY CITY...MOVEMENT WAS TO THE NORTHEAST AT 55 MPH. * THE SEVERE THUNDERSTORM WILL REMAIN IN RURAL AREAS OF NORTHERN RANSOM COUNTY... EXTREME NORTHEASTERN RANSOM COUNTY... EXTREME NORTHEASTERN RANSOM COUNTY... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4657 9771 4643 9756 4668 9725 4682 9727 ...CORRECTED TO INCLUDE ALL OF RANSOM COUNTY... 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 Sep 2, 10:05 AM CDT, 3 hours 35 minutes earlier.
Area forecast discussion, Sep 2, 10:05 AM CDT, 3 hours 35 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1005 AM CDT SAT SEP 2 2000 FORECAST PROBLEM FOR TODAY IS PCPN. LATEST VIS AND IR SATELLITE IMAGERY SHOWS CWFA COVERED IN IFR DECK WITH COLDEST CLOUD TOPS WORKING INTO E ND. LATEST MSAS SFC PRESSURE ANALYSIS HAS LOW PRESSURE CENTERED IN SE MT WITH TROF EXTENDING THROUGH W SD TO ANOTHER LOW IN CENTRAL NE. CWFA IS IN MOIST E-SE FLOW. 12Z 850MB UA MAP SHOWS WARM FRONT EXTENDING THROUGH SE ND INTO WC MN... COINCIDENTAL TO WHERE CURRENTLY HAVE STRONGEST CONVECTION. WITH REST OF CWFA GETTING GENERAL SHRA/TSRA DUE TO WAA. WHEN COMPARING MSAS PRESSURE ANALYSIS TO MODELS...ETA MATCHES BEST WITH AVN ALSO CLOSE. MODELS KEEP PCPN OVER CWFA AS SHORTWAVE MOVES THROUGH...WITH BEST POTENTIAL FOR STRONGER STORMS STILL IN S CWFA. ALL IN ALL...CURRENT FORECAST HANDLING SITUATION WELL...WITH ONLY MINOR CHANGES NEEvDED. .FGF...NONE NG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 11:29 AM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass | 31 min |
| Sep 2, 11:56 AM CDT | Severe Thunderstorm Warning | FGF | Cass | 34 min |
| Sep 2, 12:21 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 29 min |
| Sep 2, 12:43 PM CDT | Severe Thunderstorm Warning | FGF | Barnes, Cass | 32 min |
| Sep 2, 1:45 PM CDT | Severe Thunderstorm Warning | FGF | Sargent | 30 min |
| Sep 2, 2:18 PM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland | 32 min |
| Sep 2, 2:43 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 32 min |
| Sep 2, 3:28 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 32 min |
| Sep 2, 3:33 PM CDT | Severe Thunderstorm Warning | FGF | Sargent | 32 min |
| Sep 2, 3:58 PM CDT | Severe Thunderstorm Warning | FGF | Ransom | 32 min |
| Sep 2, 4:32 PM CDT | Severe Thunderstorm Warning | FGF | Ransom, Richland | 28 min |
| Sep 2, 4:44 PM CDT | Flash Flood Warning | FGF | Cass, Ransom, Richland | 4 hr |
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.