Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 176, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Oct 11, 1997, 8:26 PM CDT for Emmons County, North Dakota. It was in force for 49 min. 1 report 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
- Oct 11, 1997, 8:26 PM CDT (01:26 UTC)
- Expired
- Oct 11, 1997, 9:15 PM CDT
- In force
- 49 min
- Issued by
- NWS Bismarck, ND
- Area
- Whole counties
County Emmons County, ND
The radar
The Bismarck radar (KBIS), 67 km from the middle of the area, began a volume at 01:26 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 |
|---|---|---|---|
| Oct 11, 9:10 PM CDT | Thunderstorm Wind 85 | Linton, ND | strong thunderstorm winds Cattail Bay,a popular camping area. A mobile home was picked up off of its foundation, lifted over a van, and dropped 40 feet away. Van and a boat in the driveway were flipped over. Numerous other campers were flipped over or onto the |
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 |
|---|---|---|---|
| Oct 11, 4:15 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.4 hours before the alert went out and 64 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
- 2113 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1427 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBIS 120128 RRA SVRBIS NDC029-120215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 826 PM CDT SAT OCT 11 1997 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 915 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTH CENTRAL NORTH DAKOTA ...SOUTHERN EMMONS COUNTY AT 825 PM CDT A SEVERE THUNDERSTORM WAS LOCATED 65 MILES SOUTHEAST OF BISMARCK MOVING INTO SOUTHERN EMMONS COUNTY. THE THUNDERSTORM WILL MOVE INTO THE TOWNS OF WESTFIELD...HAGUE AND STRASBURG. THE SEVERE THUNDERSTORM WAS MOVING NORTHEAST AT 45 MPH. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. VAN ESS
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, Oct 11, 8:25 PM CDT, 1 minute before
NDZ022-023-034>036-046-047-050-120230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 825 PM CDT SAT OCT 11 1997 ...STRONG THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL NORTH DAKOTA... AT 820 PM CDT STRONG THUNDERSTORMS WERE MOVING THROUGH SOUTH CENTRAL NORTH DAKOTA. THE THUNDERSTORMS WERE MOVING NORTH AT 40 MPH. STRONG THUNDERSTORMS WILL MOVE THROUGH THE CITIES OF BISMARCK AND MANDAN BETWEEN 825 AND 930 PM. THESE THUNDERSTORMS WILL PRODUCE HAIL...STRONG WINDS AND VERY HEAVY RAIN ALONG WITH DEADLY LIGHTNING. STREET FLOODING WILL LIKELY OCCUR IN THE CITIES AS THE THUNDERSTORMS MOVE THROUGH. OTHER STRONG THUNDERSTORMS WILL PRODUCE HAIL...VERY HEAVY RAIN AND STRONG WINDS THROUGH SOUTH CENTRAL NORTH DAKOTA. A TORNADO WATCH REMAINS IN EFFECT UNTIL 10 PM. THE THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL NORTH DAKOTA MAY BECOME SEVERE VERY QUICKLY. BE ALERT AND TAKE SHELTER AS THE THUNDERSTORMS APPROACH. VAN ESS
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 11, 8:34 PM CDT | Severe Thunderstorm Warning | BIS | Wells | 56 min |
| Oct 11, 9:13 PM CDT | Severe Thunderstorm Warning | BIS | Sheridan | 62 min |
| Oct 11, 9:18 PM CDT | Severe Thunderstorm Warning | BIS | Emmons | 27 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.