Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 113, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 22, 1998, 6:50 PM MDT for Hettinger County, North Dakota. It was in force for 60 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
- Aug 22, 1998, 6:50 PM MDT (00:50 UTC)
- Expired
- Aug 22, 1998, 7:50 PM MDT
- In force
- 60 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Hettinger County, ND
The radar
The Bismarck radar (KBIS), 135 km from the middle of the area, began a volume at 00:52 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 22, 6:55 PM MDT | Hail 1.75 | Regent, ND | |
| Aug 22, 7:35 PM MDT | Hail 0.75 | Mott, ND | 4 to 6 inches deep hail reported on ground |
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, 0.8 hours before the alert went out and 140 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
- 1002 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 2045 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBIS 230053 RRA SVRBIS NDC041-230150- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 750 PM CDT (650 PM MDT) SAT AUG 22 1998 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN AND EASTERN HETTINGER COUNTY IN SOUTHWESTERN NORTH DAKOTA * UNTIL 750 PM MDT (850 PM CDT) * AT 650 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 18 MILES SOUTH OF DICKINSON OR 8 MILES NORTHEAST OF NEW ENGLAND... MOVING SOUTHEAST AT 40 MPH. THE STORM WILL REMAIN IN RURAL AREAS NORTH OF MOTT AND REGENT. THIS STORM HAS A HISTORY OF LARGE HAIL. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! HAMILTON/VINING
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.
In the hours before
Local storm report, Aug 22, 5:48 PM MDT, 1 hour 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
648 PM CDT SAT AUG 22 1998
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM 13 E BEACH ND 1.00 INCH HAIL
08/22/98 GOLDEN VALLEY
0635 PM MEDORA ND 1.00 INCH HAIL
08/22/98 BILLINGS FROM MEDORA POLICE
DEPARTMENT
0645 PM 5 S MEDORA ND 1.00 INCH HAIL
08/22/98 BILLINGS FROM COUNTY EMERGENCY
MANAGER
TWHLocal storm report, Aug 22, 5:48 PM MDT, 1 hour 2 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
648 PM CDT SAT AUG 22 1998
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM 13 E BEACH ND 1.00 INCH HAIL
08/22/98 GOLDEN VALLEY
0635 PM MEDORA ND 1.00 INCH HAIL
08/22/98 BILLINGS FROM MEDORA POLICE
DEPARTMENT
0645 PM 5 S MEDORA ND 1.00 INCH HAIL
08/22/98 BILLINGS FROM COUNTY EMERGENCY
MANAGER
TWHThe office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:30 PM MDT | Severe Thunderstorm Warning | BIS | Grant | 60 min |
| Aug 22, 8:05 PM MDT | Tornado Warning | BIS | Grant | 30 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; radar from the NEXRAD Level II archive.