Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 177, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 12, 2000, 12:51 AM CDT for 4 counties in North Dakota. It was in force for 59 min. 10 reports 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 12, 2000, 12:51 AM CDT (05:51 UTC)
- Expired
- Aug 12, 2000, 1:50 AM CDT
- In force
- 59 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
Counties Benson County, ND, Nelson County, ND, Ramsey County, ND, Walsh County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 112 km from the middle of the area, began a volume at 05:52 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 12, 1:00 AM CDT | Thunderstorm Wind | Brocket, ND | Several tree branches were snapped by the strong wind. |
| Aug 12, 1:00 AM CDT | Thunderstorm Wind | Warwick, ND | Tree branches were blown down. |
| Aug 12, 1:10 AM CDT | Thunderstorm Wind | Lawton, ND | Large tree branches were snapped. |
| Aug 12, 1:10 AM CDT | Thunderstorm Wind | Devils Lake, ND | Numerous power poles and billboards were damaged by the wind. |
| Aug 12, 1:30 AM CDT | Thunderstorm Wind | Lakota, ND | Tree damage was also reported in Lakota. |
| Aug 12, 1:35 AM CDT | Thunderstorm Wind | Michigan City, ND | Many trees were blown down and some building damage occurred. |
| Aug 12, 1:35 AM CDT | Thunderstorm Wind | Fordville, ND | A grain dryer was tipped and trees were blown down. |
| Aug 12, 1:45 AM CDT | Thunderstorm Wind 54 E | Grafton, ND | Two potato warehouse roofs were blown off in Grafton. |
| Aug 12, 1:45 AM CDT | Thunderstorm Wind | Michigan City, ND | Trees were blown down across a county road. |
| Aug 12, 2:00 AM CDT | Thunderstorm Wind 61 E | Grafton, ND | Trees were damaged by the wind. |
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 |
|---|---|---|---|
| Aug 11, 9:45 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 5.9 hours before the alert went out and 226 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
- 2271 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 2674 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 112 m²/s²
- 0-3 km storm-relative helicity
- 207 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.7
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.
NWS Grand Forks, ND wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 11, 9:00 PM CDT, 3 hours 51 minutes earlier.
Area forecast discussion, Aug 11, 9:00 PM CDT, 3 hours 51 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 900 PM FRI AUG 11 2000 SW UPR LVL JET MOVG INTO SW MAN FCST TO MOV INTO WRN ONT BY MORN WITH THE NRN COUNTIES IN THE RRQ. WATER VAPOR LOOP SHOWING DARK BAND FM CA INTO SW MAN AND SPREADING NE. SHORT WV OVR SRN SASK IS REASONABLE. QUITE UNSTABLE ATMOS WITH LIS AS LOW AS -12 OVR N CNTRL ND. SFC BASED CAPES 1500+ J/KG OVR NW COUNTIES ACCORDING TO THE MESO ETA. HOWEVER CINS WERE ALSO FAIRLY HI. ETA MODEL SNDGS SHOW WM AIR ARND 700 HPA WAS CREATING THE HI CINS. 700 HA CAA FCST OVR THE NRN COUNTIES TNGT. BACKING WND PROFILE ENTERING SW MAN AND IS FCST TO SHFT INTO SW ONT BY MORN. BACKING ALSO OCCURS ACRS ND TNGT BUT LAGS THE CAA ACRS SRN MAN LEAVING LOW LVL CONVERGENCE ACRS THE NRN VLY BY MIDN. MESO SCALE ANLYS HAS SFC PRES RISES MOVG INTO SW MAN AND NW ND. GOOD SFC MSTR FLUX CONVERGENCE INDICATED FM NR BIS INTO TOWNER COUNTY AS SFC WNDS HAVE BECM NW IN WRN ND. KMBX VAD WND HAD A LGT NW WND IN THE FIRST 2 THSD FT. KBIS AND KMVX VAD WND HAD A SOUTH WND 30-35KTS BLO 5-6 THSD FT. NNW-SSE AXIS OF SFC MIXING RATIOS OF 16G/KG WAS OVR THE ERN HALF OF ND AND ADJ PARTS OF MN. FAST MOVG TSRA HAS MOVD INTO NW ND AND TSRA HAVE DEVELOPED IN SE MAN JUST N OF THE INTERNATIONAL BDR. SO WL FOCUS ON TSRA MAINLY OVR NRN COUNTIES TNGT. WL CHECK ZONES. .FGF...NONE. HOPPES
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 10:51 PM CDT | Severe Thunderstorm Warning | FGF | Towner | 29 min |
| Aug 12, 12:04 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Ramsey | 46 min |
| Aug 12, 12:04 AM CDT | Severe Thunderstorm Warning | FGF | Eddy | 46 min |
| Aug 12, 12:51 AM CDT | Severe Thunderstorm Warning | FGF | Eddy | 59 min |
| Aug 12, 1:25 AM CDT | Severe Thunderstorm Warning | FGF | Pembina, Walsh | 30 min |
| Aug 12, 1:25 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 30 min |
| Aug 12, 1:55 AM CDT | Severe Thunderstorm Warning | FGF | Pembina, Walsh | 30 min |
| Aug 12, 1:55 AM CDT | Severe Thunderstorm Warning | FGF | Grand Forks | 30 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2000Every severe thunderstorm warning in 2000
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.