Alert archive / North Dakota / Tornado Warnings in 1998
Tornado Warning 6, NWS Bismarck, ND
NWS Bismarck, ND issued this tornado warning at May 13, 1998, 8:48 PM CDT for Burleigh County, North Dakota. It was in force for 47 min. 2 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 13, 1998, 8:48 PM CDT (01:48 UTC)
- Expired
- May 13, 1998, 9:35 PM CDT
- In force
- 47 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Burleigh County, ND
The radar
The Bismarck radar (KBIS), 32 km from the middle of the area, began a volume at 01:49 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 |
|---|---|---|---|
| May 13, 9:00 PM CDT | Hail 1.75 | Wilton, ND | |
| May 13, 9:10 PM CDT | Tornado F0 | Wilton, ND | Tornado up and down along path |
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 13, 6:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.8 hours before the alert went out and 29 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
- 655 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 1459 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 250 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 7.3
The text
As transmitted, in the capitals the NWS used until 2016.
924 WFUS1 KBIS 140151 RRA TORBIS NDC015-140235- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BISMARCK ND 848 PM CDT WED MAY 13 1998 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN BURLEIGH COUNTY IN CENTRAL NORTH DAKOTA * UNTIL 935 PM CDT * AT 845 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 18 MILES NORTHWEST OF BISMARCK...OR 2 MILES SOUTH OF PRICE...IN EXTREME SOUTHEAST OLIVER COUNTY...MOVING EAST AT 30 MPH INTO NORTHWEST BURLEIGH COUNTY. * THE TORNADO IS EXPECTED TO BE NEAR... BALDWIN AND WILTON BY 9 PM CDT GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR THIS DOES NOT INCLUDE THE CITY OF BISMARCK WA
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 7:20 PM CDT | Tornado Warning | BIS | Morton | 45 min |
| May 13, 7:51 PM CDT | Severe Thunderstorm Warning | BIS | Oliver | 64 min |
| May 13, 8:05 PM CDT | Tornado Warning | BIS | Morton | 30 min |
| May 13, 8:31 PM CDT | Tornado Warning | BIS | Oliver | 29 min |
| May 13, 10:22 PM CDT | Severe Thunderstorm Warning | BIS | McLean, Mercer | 48 min |
| May 14, 5:27 PM CDT | Tornado Warning | BIS | Sheridan | 43 min |
Nearby
Tornado Warnings in North Dakota, 1998Every tornado warning in 1998Tornadoes 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; radar from the NEXRAD Level II archive.