Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 9, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at May 17, 1998, 7:17 PM CDT for Bottineau County, McHenry County, North Dakota. It was in force for 63 min. 5 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 17, 1998, 7:17 PM CDT (00:17 UTC)
- Expired
- May 17, 1998, 8:20 PM CDT
- In force
- 63 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
Counties Bottineau County, ND, McHenry County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 17, 7:30 PM CDT | Hail 1.75 | Upham, ND | |
| May 17, 8:00 PM CDT | Thunderstorm Wind 61 | Upham, ND | New machine shop destroyed, equipment in shop OK. |
| May 17, 8:20 PM CDT | Tornado F0 | Balfour, ND | Brief touch down reported by deputy. |
| May 17, 8:25 PM CDT | Hail 2.5 | Drake, ND | |
| May 17, 8:30 PM CDT | Hail 0.75 | Willow City, 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 |
|---|---|---|---|
| May 17, 4:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.3 hours before the alert went out and 194 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
- 493 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 2753 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
768 WUUS1 KBIS 180020 RRA SVRBIS NDC009-049-180120- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 717 PM CDT SUN MAY 17 1998 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN BOTTINEAU COUNTY IN NORTH CENTRAL NORTH DAKOTA NORTHERN MCHENRY COUNTY IN NORTH CENTRAL NORTH DAKOTA * UNTIL 820 PM CDT * AT 715 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 25 MILES NORTH OF MINOT...OR 5 MILES SOUTH OF ECKMAN... MOVING NORTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... RUSSELL AT 720 PM CDT UPHAM AT 730 PM CDT KRAMER AT 750 PM CDT SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS JP MARTIN
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 7:10 PM CDT | Severe Thunderstorm Warning | BIS | Ward | 45 min |
| May 17, 7:50 PM CDT | Severe Thunderstorm Warning | BIS | McHenry | 60 min |
| May 17, 8:23 PM CDT | Tornado Warning | BIS | McHenry | 47 min |
| May 17, 8:33 PM CDT | Severe Thunderstorm Warning | BIS | Bottineau | 32 min |
| May 17, 8:39 PM CDT | Severe Thunderstorm Warning | BIS | Pierce | 61 min |
| May 17, 8:58 PM CDT | Tornado Warning | BIS | Pierce | 47 min |
| May 17, 9:03 PM CDT | Severe Thunderstorm Warning | BIS | Rolette | 62 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1998Every severe thunderstorm warning in 1998
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.