Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 147, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 29, 1997, 5:33 PM CDT for Dickey County, North Dakota. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 29, 1997, 5:33 PM CDT (22:33 UTC)
- Expired
- Aug 29, 1997, 6:00 PM CDT
- In force
- 27 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Dickey County, ND
The radar
The Aberdeen radar (KABR), 73 km from the middle of the area, began a volume at 22:33 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 10.6 hours before the alert went out and 135 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
- 1421 J/kg
- Mixed-layer CIN
- -187 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
723 WUUS1 KBIS 292234 RRA SVRBIS NDC021-292300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 533 PM CDT FRI AUG 29 1997 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 600 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEAST NORTH DAKOTA ...EASTERN DICKEY COUNTY AT 530 PM CDT DOPPLER WEATHER RADAR INDICATED A SEVERE THUNDERSTORM 10 MILES WEST OF OAKES...OR 50 MILES SOUTHEAST OF JAMESTOWN...MOVING EAST AT 30 MPH. THIS STORM PRODUCED 50 MPH WINDS AT ELLENDALE AT 5 PM CDT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. OAKES LIES NEAR THE PATH OF THIS STORM. & 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 29, 12:25 PM CDT, 5 hours 8 minutes before
NDZ034-035-291830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 1225 PM CDT FRI AUG 29 1997 ...HEAVY RAIN MOVING INTO THE BISMARCK/MANDAN AREA... AT 1215 PM CDT WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS MOVING INTO CENTRAL NORTH DAKOTA. THIS LINE EXTENDED FROM 20 MILES NORTH OF BISMARCK NEAR THE TOWN OF REGAN TO 20 MILES SOUTHWEST OF BISMARCK. THE LINE IS MOVING NORTHEAST AT 35 MPH. EARLIER THE MANDAN AIRPORT REPORTED VERY HEAVY RAIN WITH THE THUNDERSTORMS. PERSONS IN THE TOWNS OF BISMARCK...MANDAN...REGAN AND BALDWIN CAN EXPECTED THE LINE TO MOVE THROUGH THEIR AREAS BY 130 PM CDT. ALTHOUGH NO SEVERE WEATHER IS ANTICIPATED...VERY HEAVY RAIN MAY CAUSE SOME PONDING OF WATER ON THE ROADWAY. CONTINUE TO MONITOR YOUR LOCAL TV...RADIO OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND UPDATES. HINTZ
Special weather statement, Aug 29, 12:27 PM CDT, 5 hours 6 minutes before
NDZ034-035-291830- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 1225 PM CDT FRI AUG 29 1997 ...HEAVY RAIN MOVING INTO THE BISMARCK/MANDAN AREA... AT 1215 PM CDT WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS MOVING INTO CENTRAL NORTH DAKOTA. THIS LINE EXTENDED FROM 20 MILES NORTH OF BISMARCK NEAR THE TOWN OF REGAN TO 20 MILES SOUTHWEST OF BISMARCK. THE LINE IS MOVING NORTHEAST AT 35 MPH. EARLIER THE MANDAN AIRPORT REPORTED VERY HEAVY RAIN WITH THE THUNDERSTORMS. PERSONS IN THE TOWNS OF BISMARCK...MANDAN...REGAN AND BALDWIN CAN EXPECTED THE LINE TO MOVE THROUGH THEIR AREAS BY 130 PM CDT. ALTHOUGH NO SEVERE WEATHER IS ANTICIPATED...VERY HEAVY RAIN MAY CAUSE SOME& PONDING OF WATER ON THE ROADWAY. CONTINUE TO MONITOR YOUR LOCAL TV...RADIO OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS AND UPDATES. HINTZ
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 1:40 PM CDT | Severe Thunderstorm Warning | BIS | Burleigh, Kidder | 65 min |
| Aug 29, 3:31 PM CDT | Severe Thunderstorm Warning | BIS | Logan | 44 min |
| Aug 29, 4:37 PM CDT | Severe Thunderstorm Warning | BIS | Dickey | 53 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1997Every severe thunderstorm warning in 1997
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.