Alert archive / North Dakota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 8, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at May 7, 1997, 5:02 PM CDT for Burleigh County, North Dakota. It was in force for 43 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
- May 7, 1997, 5:02 PM CDT (22:02 UTC)
- Expired
- May 7, 1997, 5:45 PM CDT
- In force
- 43 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 22:01 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 7, 5:10 PM CDT | Thunderstorm Wind 61 | Bismarck, ND | 70 MPH WIND WITH REPORTS OF TREES BEING BLOWN OVER |
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 12:00Z, 10.0 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 921 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -46 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBIS 072202 RRA SVRBIS NDC015-072245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BISMARCK ND 502 PM CDT WED MAY 7 1997 THE NATIONAL WEATHER SERVICE IN BISMARCK HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 545 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN CENTRAL NORTH DAKOTA ...BURLEIGH COUNTY AT 555 PM CDT...AN AREA OF SEVERE THUNDERSTORMS WAS MOVING INTO NORTHWEST MANDAN MOVING SOUTHEAST AT 35 MPH. THESE STORMS WILL PRODUCE WINDS OF 50 TO 60 MPH IN THE BISMARCK AREA BY 510 PM CDT...THEN MOVE THROUGH LINCOLN...AND MENOKEN BY 515 PM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGTHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. ABELING
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, May 7, 1:35 PM CDT, 3 hours 27 minutes before
NDZ037-072000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BISMARCK ND 135 PM CDT WED MAY 7 1997 ...SHOWERS AND THUNDERSHOWERS HEADING TOWARD JAMESTOWN... AT 130 PM CDT WEATHER RADAR INDICATED A LINE OF SHOWERS AND THUNDERSHOWERS 25 MILES WEST OF JAMESTOWN...MOVING EAST AT 30 MPH. NO SEVERE WEATHER IS EXPECTED WITH THE THUNDERSHOWERS...BUT THEY MAY PRODUCE ISOLATED AREAS OF 0.25 TO 0.50 INCH OF RAIN. LEBLANG
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 4:37 PM CDT | Severe Thunderstorm Warning | BIS | Morton, Oliver | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.