Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 224, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 24, 2000, 3:55 AM CDT for Eddy 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Aug 24, 2000, 3:55 AM CDT (08:55 UTC)
- Expired
- Aug 24, 2000, 4:40 AM CDT
- In force
- 45 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Eddy County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 134 km from the middle of the area, began a volume at 08:56 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 24, 4:06 AM CDT | Hail 0.75 | New Rockford, 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 00:00Z, 8.9 hours before the alert went out and 164 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
- 129 J/kg
- Mixed-layer CIN
- -420 J/kg
- Mixed-layer LCL
- 2512 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 240854 SVRFAR NDC027-240940- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 355 AM CDT THU AUG 24 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EDDY COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 440 AM CDT * AT 351 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES NORTHWEST OF NEW ROCKFORD...OR ABOUT 31 MILES SOUTHWEST OF DEVILS LAKE...MOVEMENT WAS TO THE EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... NEW ROCKFORD AT 400 AM CDT... REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TOR NADOES WITH LITTLE OR NO ADVANCE WARNING. LAT...LON 4784 9931 4767 9936 4764 9875 4779 9871 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 24, 2:39 AM CDT, 1 hour 16 minutes earlier.
Area forecast discussion, Aug 24, 2:39 AM CDT, 1 hour 16 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 239 AM CDT THU AUG 24 2000 ...MAIN FORECAST CHALLENGE CENTERS ON CONVECTIVE ACTIVITY TODAY... WITH RAPIDLY DEVELOPING TSRA JUST WEST OF THE FA WILL BE BRIEF. ETA DID A GOOD JOB IN DEPICTING AREA OF 850 TO 500 MB Q VECTOR CONVERGENCE OVER NORTH CENTRAL ND THIS AM IN AREA OF HIGHER INSTABILITY PER SHOWALTER INDEX. ETA TAKES THIS AREA TO THE ENE BY 12Z OVER THE NRN RRV AS SFC TROF GRADUALLY PUSHES EAST ACROSS ND...AND WITH CURRENT MOVEMENT OF CONVECTIVE ACTIVITY THIS LOOKS REASONABLE. THUS WILL HAVE TO BUMP UP POPS IN THIS AREA FOR THE EARLY MORNING. SRN VALLEY BECOMES MORE ACTIVE AS NE TO SW ORIENTED TROF MOVES IN WITH INSTABILITIES INCREASING WITH DAYTIME HEATING AND SFC MOISTURE ADVECTION. ALTHOUGH DECENT WAA IS EVIDENT ON ETA...WILL TRIM BACK TEMPERATURES SLIGHTLY AS INCREASING CLOUD C"OVER DUE TO CONVECTION WILL HOLD DAYTIME HIGHS DOWN. WILL NOT MAKE ANY ADJUSTMENTS TO REMAINDER OF CURRENT ZFP UNLESS TIME PERMITS. .FGF...NONE. RJT
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 2:42 AM CDT | Severe Thunderstorm Warning | FGF | Benson | 43 min |
| Aug 24, 3:39 AM CDT | Severe Thunderstorm Warning | FGF | Benson | 46 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.