Alert archive / North Dakota / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 151, NWS Bismarck, ND
NWS Bismarck, ND issued this severe thunderstorm warning at Aug 16, 2002, 6:53 PM CDT for Burleigh County, Morton County, Sioux County, North Dakota. It was in force for 52 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
- Aug 16, 2002, 6:53 PM CDT (23:53 UTC)
- Expired
- Aug 16, 2002, 7:45 PM CDT
- In force
- 52 min
- Issued by
- NWS Bismarck, ND
- Area
- Counties, with a storm outline in the text
Counties Burleigh County, ND, Morton County, ND, Sioux County, ND
The radar
The Bismarck radar (KBIS), 23 km from the middle of the area, began a volume at 23:57 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 16, 7:15 PM CDT | Hail 0.75 | Mandan, 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
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 16, 3:40 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.9 hours before the alert went out and 26 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
- 1678 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 176 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Bismarck, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 16, 2:00 PM CDT, 4 hours 53 minutes earlier.
Area forecast discussion, Aug 16, 2:00 PM CDT, 4 hours 53 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BISMARCK ND
200 PM CDT FRI AUG 16 2002
STRONG MID LEVEL TROUGH WILL SWING RAPIDLY THROUGH OUR FORECAST
AREA. AT THE SURFACE A LOW WILL MOVE TO NEAR BISMARCK AT 00Z AND
THEN RAPIDLY TO GFK BY 06Z. A STRONG COLD FRONT WILL FOLLOW THE LOW
WITH ENVIRONMENTAL WINDS TO 45 MPH. ALSO...STRONG
THUNDERSTORMS...POSSIBLY SEVERE...WILL RIDE AHEAD OF THE FRONT LATER
THIS AFTERNOON AND EVENING.
BECAUSE THE SYSTEM IS MOVING SO RAPIDLY WINDS WILL LIKELY BE
SUBSIDING IN THE WEST ALREADY SATURDAY. I WILL CONTINUE THE CURRENT
WINDS ADVISORIES AS THE NEW MODEL RUNS SUPPORT THEM.
A WEAK SHORT WAVE MAY BRING A FEW AFTERNOON AND EVENING
THUNDERSHOWERS TO THE NORTHERN PART OF THE STATE SUNDAY.
.BIS...WIND ADVISORY WEST......TONIGHT...............ISN..DIK..HEI
CENTRAL..TONIGHT AND SATURDAY..MOT..BIS..JMS
RSLIn the hours before
Local storm report, Aug 16, 6:18 PM CDT, 35 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
618 PM CDT FRI AUG 16 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0550 PM HALLIDAY ND .75 INCH HAIL
08/16/02 DUNN REPORTED BY STORM
SPOTTER.Local storm report, Aug 16, 6:20 PM CDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
620 PM CDT FRI AUG 16 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0610 PM HEBRON ND .75 INCH HAIL
08/16/02 MORTON REPORTED BY LAW
ENFORCEMENT OFFICIAL.Local storm report, Aug 16, 6:23 PM CDT, 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
623 PM CDT FRI AUG 16 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0615 PM HETTINGER ND 59 MPH TSTM GUST
08/16/02 ADAMS REPORTED FROM ASOS.Local storm report, Aug 16, 6:26 PM CDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
626 PM CDT FRI AUG 16 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0626 PM GLEN ULLIN ND .75 INCH HAIL
08/16/02 MORTON REPORTED BY PUBLIC.Local storm report, Aug 16, 6:37 PM CDT, 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
637 PM CDT FRI AUG 16 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0626 PM GLEN ULLIN ND .75 INCH HAIL
08/16/02 MORTON 524 ARBLocal storm report, Aug 16, 6:38 PM CDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
638 PM CDT FRI AUG 16 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0550 PM HALLIDAY ND 1 INCH HAIL
08/16/02 DUNN REPORTED BY COOPERATIVE
OBSERVER.The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 4:21 PM CDT | Severe Thunderstorm Warning | BIS | Billings, Golden Valley | 54 min |
| Aug 16, 4:55 PM CDT | Severe Thunderstorm Warning | BIS | Dunn, Stark | 65 min |
| Aug 16, 5:04 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Bowman, Hettinger, Slope | 56 min |
| Aug 16, 5:57 PM CDT | Severe Thunderstorm Warning | BIS | Mercer, Morton, Oliver | 63 min |
| Aug 16, 6:12 PM CDT | Severe Thunderstorm Warning | BIS | Adams, Grant, Hettinger | 63 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2002Every severe thunderstorm warning in 2002
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.