Alert archive / North Dakota / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 142, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 21, 1996, 4:11 AM CDT for Benson County, Towner County, North Dakota. It was in force for 34 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 21, 1996, 4:11 AM CDT (09:11 UTC)
- Expired
- Aug 21, 1996, 4:45 AM CDT
- In force
- 34 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Benson County, ND, Towner County, ND
The radar
The Minot AFB radar (KMBX), 115 km from the middle of the area, began a volume at 09:10 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 21, 4:18 AM CDT | Hail 0.75 | Churches Ferry, 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 nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 9.2 hours before the alert went out and 207 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
- 1259 J/kg
- Mixed-layer CIN
- -238 J/kg
- Mixed-layer LCL
- 2050 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 21, 3:11 AM CDT, 1 hour before
NDZ016-210845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN NORTH DAKOTA ND 310 AM CDT WED AUG 21 1996 ...A SEVERE THUNDERSTORM WARNING CONTINUES FOR EASTERN WALSH COUNTY UNTIL 330 AM CDT... AT 3 AM CDT 50 TO 60 MPH WINDS WERE REPORTED IN GRAFTON. AT 307 AM THUNDERSTORMS EXTENDED FROM ADAMS...45 MILES NORTHEAST OF DEVILS LAKE TO THE RED RIVER EAST OF GRAFTON. MOVEMENT WAS NORTHEAST AT 25 MPH. THE THUNDERSTORMS WILL EXTEND ALONG THE NORTHERN WALSH COUNTY LINE FROM HOOPLE TO DRAYTON BY 330 AM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND OVER 57 MPH...HAIL 3/4 INCH IN DIAMETER OR LARGER...TORNADOES...DEADLY LIGHTNING...AND VERY HEAVY RAIN. MOVE TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HOPPES &
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 7:20 AM CDT | Severe Thunderstorm Warning | FGF | Marshall | 25 min |
| Aug 21, 7:45 AM CDT | Severe Thunderstorm Warning | FGF | Marshall | 15 min |
| Aug 21, 9:39 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 36 min |
| Aug 21, 10:15 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 30 min |
| Aug 21, 11:09 AM CDT | Severe Thunderstorm Warning | FGF | Beltrami | 36 min |
| Aug 21, 5:55 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater | 35 min |
| Aug 21, 6:12 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 48 min |
| Aug 20, 11:35 PM CDT | Severe Thunderstorm Warning | FGF | Benson | 40 min |
| Aug 21, 2:30 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 30 min |
| Aug 21, 2:52 AM CDT | Severe Thunderstorm Warning | FGF | Walsh | 38 min |
| Aug 21, 4:21 AM CDT | Severe Thunderstorm Warning | FGF | Ramsey | 39 min |
| Aug 21, 4:46 AM CDT | Severe Thunderstorm Warning | FGF | Pembina | 29 min |
| Aug 21, 4:49 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier | 41 min |
| Aug 21, 10:59 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 31 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 1996Every severe thunderstorm warning in 1996
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.