Alert archive / Minnesota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 184, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 12, 2000, 2:33 AM CDT for Marshall County, Roseau County, Minnesota. It was in force for 62 min. 2 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Aug 12, 2000, 2:33 AM CDT (07:33 UTC)
- Expired
- Aug 12, 2000, 3:35 AM CDT
- In force
- 62 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Marshall County, MN, Roseau County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 161 km from the middle of the area, began a volume at 07:32 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, 3:00 AM CDT | Thunderstorm Wind | Greenbush, MN | Large branches were blown down. |
| Aug 12, 3:15 AM CDT | Thunderstorm Wind | Middle River, MN | Tree damage was reported north of Middle River. |
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 12, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 7.6 hours before the alert went out and 204 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
- 128 J/kg
- Mixed-layer CIN
- -331 J/kg
- Mixed-layer LCL
- 1778 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 194 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 120734 SVRFAR MNC089-135-120835- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 233 AM CDT SAT AUG 12 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN MARSHALL COUNTY IN NORTHWEST MINNESOTA... WESTERN ROSEAU COUNTY IN NORTHWEST MINNESOTA... THIS INCLUDES THE CITY OF ROSEAU * UNTIL 335 AM CDT * AT 232 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE LEADING EDGE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 26 MILES NORTHWEST OF ROSEAU TO 17 MILES NORTHWEST OF THIEF RIVER FALLS...MOVEMENT WAS TO THE EAST AT 45 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... GREENBUSH AT 235 AM CDT... MIDDLE RIVER AT 240 AM CDT... BADGER AT 245 AM CDT... FOX AT 250 AM CDT... THESE THUNDERSTORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS TO NEAR 60 MPH. DURING THUNDERSTORMS YOU SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM CDT SATURDAY MORNING FOR NORTHWESTERN MINNESOTA AND EASTERN NORTH DAKOTA. LAT...LON 4898 9634 4831 9642 4831 9565 4896 9560 $$ BRAZZELL NNNN
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, 5 hours 33 minutes earlier.
Area forecast discussion, Aug 11, 9:00 PM CDT, 5 hours 33 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 12, 1:56 AM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall | 59 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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.