Alert archive / North Dakota / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 97, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 18, 1998, 7:48 PM CDT for Burleigh County, Morton County, North Dakota. It was in force for 32 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 18, 1998, 7:48 PM CDT (00:48 UTC)
- Expired
- Aug 18, 1998, 8:20 PM CDT
- In force
- 32 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
Counties Burleigh County, ND, Morton County, ND
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 18, 7:58 PM CDT | Hail 0.75 | Mandan, ND | |
| Aug 18, 8:03 PM CDT | Hail 1 | Bismarck Arpt, 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 |
|---|---|---|---|
| Aug 18, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 0.8 hours before the alert went out and 16 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
- 1947 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 690 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 132 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
334 WUUS1 KBIS 190052 RRA SVRBIS NDC015-059-190120- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 748 PM CDT TUE AUG 18 1998 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN BURLEIGH COUNTY IN CENTRAL NORTH DAKOTA SOUTHEASTERN MORTON COUNTY IN CENTRAL NORTH DAKOTA * UNTIL 820 PM CDT * AT 750 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF MANDAN... MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BISMARCK/MANDAN AT 755 PM CDT GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS A TORNADO WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. THIS STORM HAS PRODUCED 3/4 INCH HAIL. LEBLANG &
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
Special weather statement, Aug 18, 6:45 PM CDT, 1 hour 3 minutes before
NDZ001-002-009-010-017-018-190015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 645 PM CDT TUE AUG 18 1998 ...TORNADO WATCH NO LONGER IN EFFECT FOR PARTS OF NORTHWEST NORTH DAKOTA... TORNADO WATCH 728 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES IN NORTHWEST NORTH DAKOTA: DIVIDE...WILLIAMS...BURKE...MOUNTRAIL... MCKENZIE AND DUNN. THE THUNDERSTORMS THAT PROMPTED THE WATCH HAVE MOVED OUT OF THE AREA AND ARE NO LONGER A THREAT. A TORNADO WATCH CONTINUES UNTIL 10 PM CDT FOR MUCH OF CENTRAL NORTH DAKOTA. HINTZ
Special weather statement, Aug 18, 6:45 PM CDT, 1 hour 3 minutes before
NDZ001-002-009-010-017-018-190015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 645 PM CDT TUE AUG 18 1998 ...TORNADO WATCH NO LONGER IN EFFECT FOR PARTS OF NORTHWEST NORTH DAKOTA... TORNADO WATCH 728 IS NO LONGER IN EFFECT FOR THE FOLLOWING COUNTIES IN NORTHWEST NORTH DAKOTA: DIVIDE...WILLIAMS...BURKE...MOUNTRAIL... MCKENZIE AND DUNN. THE THUNDERSTORMS THAT PROMPTED THE WATCH HAVE MOVED OUT OF THE AREA AND ARE NO LONGER A THREAT. A TORNADO WATCH CONTINUES UNTIL 10 PM CDT FOR MUCH OF CENTRAL NORTH DAKOTA. HINTZ
Special weather statement, Aug 18, 7:10 PM CDT, 38 minutes before
NDZ003-004-011-190035- SPECIAL WEATHER STATEMENT...CORRECTED... NATIONAL WEATHER SERVICE BISMARCK ND 710 PM CDT TUE AUG 18 1998 ...SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN RENVILLE AND EASTERN WARD COUNTIES WILL BE CANCELLED... ...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 735 PM CDT FOR WESTERN BOTTINEAU COUNTY... SEVERE THUNDERSTORMS CONTINUE IN AN AREA 40 MILES NORTH OF MINOT...NEAR THE TOWNS OF ANTLER AND MAXBASS. THE STORMS ARE MOVING NORTHEAST AT 25 MPH. PERSONS IN THE TOWNS OF LANDA...ROTH AND NEWBURG SHOULD SEEK SHELTER AT ONCE. URBAN AND SMALL STREAM FLOODING IS ALSO POSSIBLE WITH THE PASSAGE OF THESE STORMS. RAINFALL AMOUNTS OF 1.50 INCHES IN LESS THAN 3 0 MINUTES ARE POSSIBLE. THE STORMS THAT PROMPTED THE WARNINGS FOR RENVILLE AND WARD COUNTIES HAVE WEAKENED AND ARE NO LONGER A THREAT. A TORNADO WATCH CONTINUES FOR CENTRAL NORTH DAKOTA UNTIL 10 PM CDT. HINTZ
Special weather statement, Aug 18, 7:10 PM CDT, 38 minutes before
NDZ003-004-011-190035- SPECIAL WEATHER STATEMENT...CORRECTED... NATIONAL WEATHER SERVICE BISMARCK ND 710 PM CDT TUE AUG 18 1998 ...SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN RENVILLE AND EASTERN WARD COUNTIES WILL BE CANCELLED... ...SEVERE THUNDERSTORM WARNING IN EFFECT UNTIL 735 PM CDT FOR WESTERN BOTTINEAU COUNTY... SEVERE THUNDERSTORMS CONTINUE IN AN AREA 40 MILES NORTH OF MINOT...NEAR THE TOWNS OF ANTLER AND MAXBASS. THE STORMS ARE MOVING NORTHEAST AT 25 MPH. PERSONS IN THE TOWNS OF LANDA...ROTH AND NEWBURG SHOULD SEEK SHELTER AT ONCE. URBAN AND SMALL STREAM FLOODING IS ALSO POSSIBLE WITH THE PASSAGE OF THESE STORMS. RAINFALL AMOUNTS OF 1.50 INCHES IN LESS THAN 3 0 MINUTES ARE POSSIBLE. THE STORMS THAT PROMPTED THE WARNINGS FOR RENVILLE AND WARD COUNTIES HAVE WEAKENED AND ARE NO LONGER A THREAT. A TORNADO WATCH CONTINUES FOR CENTRAL NORTH DAKOTA UNTIL 10 PM CDT. HINTZ
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 7:22 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Morton | 33 min |
| Aug 18, 7:59 PM CDT | Severe Thunderstorm Warning | BIS | Emmons | 46 min |
| Aug 18, 8:31 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Emmons | 44 min |
| Aug 18, 9:20 PM CDT | Severe Thunderstorm Warning | BIS | Emmons, Kidder | 45 min |
| Aug 18, 10:40 PM CDT | Severe Thunderstorm Warning | BIS | Logan | 35 min |
| Aug 19, 12:45 AM CDT | Severe Thunderstorm Warning | BIS | Grant | 50 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.