Alert archive / North Dakota / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 174, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 11, 2000, 10:51 PM CDT for Towner County, North Dakota. It was in force for 29 min. No storm report in the archive falls 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.
The facts
- Issued
- Aug 11, 2000, 10:51 PM CDT (03:51 UTC)
- Expired
- Aug 11, 2000, 11:20 PM CDT
- In force
- 29 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Towner County, ND
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, 3.9 hours before the alert went out and 252 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
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KFGF 120353 SVRFAR NDC095-120420- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 1051 PM CDT FRI AUG 11 2000 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN TOWNER COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 1120 PM CDT * AT 1044 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES NORTHWEST OF AMOURDALE...OR ABOUT 50 MILES WEST OF LANGDON...MOVEMENT WAS TO THE EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... HANSBORO AT 1050 PM CDT... ARNDT AT 1055 PM CDT... ROCKLAKE AT 1100 PM CDT... THE THUNDERSTORMS WILL HAVE A TENDENCY TO BUILD TO THE SOUTH WHILE THE LINE OF THUNDERSTORMS MOVE TO THE EAST. THESE THUNDERSTORMS HAVE THE POTENTIAL TO PRODUCE LARGE DAMAGING HAIL AND WINDS IN EXCESS OF 60 MPH. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY MORNING FOR EASTERN NORTH DAKOTA. LAT...LON 4899 9956 4859 9949 4863 9900 4900 9902 $$ 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, 1 hour 51 minutes earlier.
Area forecast discussion, Aug 11, 9:00 PM CDT, 1 hour 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 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 | Benson, Nelson, Ramsey, Walsh | 59 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; the sounding from the Mesonet's radiosonde archive.