Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 384, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 6, 2001, 5:18 PM CDT for Barnes County, North Dakota. It was in force for 42 min. 1 report 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
- Sep 6, 2001, 5:18 PM CDT (22:18 UTC)
- Expired
- Sep 6, 2001, 6:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Barnes County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 101 km from the middle of the area, began a volume at 22:19 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 |
|---|---|---|---|
| Sep 6, 5:18 PM CDT | Hail 0.75 | Hastings, 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 12:00Z, 10.3 hours before the alert went out and 198 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
- 135 J/kg
- Mixed-layer CIN
- -506 J/kg
- Mixed-layer LCL
- 1121 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
587 WUUS53 KFGF 062218 SVRFAR NDC003-062300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 518 PM CDT THU SEP 6 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... BARNES COUNTY IN SOUTHEAST NORTH DAKOTA. INCLUDING THE CITY OF VALLEY CITY... * UNTIL 600 PM CDT. * AT 514 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES NORTHWEST OF HASTINGS...OR ABOUT 15 MILES SOUTHWEST OF VALLEY CITY...MOVEMENT WAS TO THE NORTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... VALLEY CITY AT 555 PM. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM THURSDAY EVENING FOR NORTHWESTERN MINNESOTA AND SOUTHEAST NORTH DAKOTA. LAT...LON 4669 9842 4664 9818 4671 9770 4721 9777 $$ 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 Sep 6, 3:52 PM CDT, 1 hour 26 minutes earlier.
Area forecast discussion, Sep 6, 3:52 PM CDT, 1 hour 26 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 352 PM CDT THU SEP 6 2001 .SHORT TERM... UPR LVL WV OVR ERN ND TO MOV E TNGT. 88D SHOWING WIDELY SCT TSRA OVR NW COUNTIES MOVG NE. 88D ALSO SHOWING BOUNDARY MOVG S ACRS GFK COUNTY. NEW STORMS HAVE FIRED NE OF GFK ALONG BOUNDARY. SFC WNDS HAVE BECM NRLY OVR THE NW HALF OF THE CWFA. MESOSCALE ANLYS HAS BEST SFC MSTR FLUX CONVERGENCE ALONG FNTL BNDRY. LIS WERE -6 TO -7 AND PRECIPITABLE WATERS ARND 1.5 INCHES. SECOND WV OVR BC TO DIG ACRS THE PLNS FRI AND BRING ANOTHER CHC OF PRECIP FOR FRI NGT/SAT MORN MAINLY IN THE NRN ZONES. WATER VAPOR LOOP SHOWING A WEAK WV OVR SRN ND. LARGER CIRC OVR WY AND IS FCST TO MOV TO THE TX PANHANDLE BY FRI AFTN. SPC COOR FOR WATCH FOR MOSTLY MN SIDE. .EXTENDED... BOTH AVN AND MRF SHOW 50H VORT MOVING PAST THE AREA ON MONDAY. 500 MB TEMPS DROP TO AROUND -24C IN NORTHERN HALF OF CWA ON MONDAY. MRF MORE PROGRESSIVE WITH VORT THAN AVN. WILL LEAVE MONDAY DRY FOR NOW BUT WILL HAVE TO TAKE A CLOSER LOOK AT NEXT MODEL RUNS. MRF BRINGS ONLY WEAK 50H SHORT WAVE IN ON TUESDAY...WHICH IS SIGNIFICANTLY DIFFERENT FROM PREVIOUS RUN BUT WILL LEAVE TSTM MENTION IN . WEDNESDAY AND THURSDAY LOOK DRY FOR NOW BUT ECMWF AND MRF DISAGREE ON BOUNDARY POSITION WEDNESDAY...WILL WAIT FOR LATER RUNS BEFORE ADDING PRECIPITATION CHANCES. WILL KEEP HIGH TEMPS AROUND 70 AND LOWS IN THE 45-55 DEGREE RANGE. .FGF...WW 709 TIL 8 PM CDT. HOPPES/BRIDENSTINE
In the hours before
Special weather statement, Sep 6, 1:15 PM CDT, 4 hours 3 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-062000- SPECIAL WEATHER STATEMENT HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 115 PM CDT THU SEP 6 2001 ...THERE IS A RISK OF SEVERE THUNDERSTORMS ACROSS PORTIONS OF SOUTHEAST NORTH DAKOTA AND WESTERN MINNESOTA LATE THIS AFTERNOON AND EVENING... SYNOPSIS...A SLOW MOVING COLD FRONT WILL ENCOUNTER A MOIST AND MODERATELY UNSTABLE AIRMASS AS IS ADVANCES INTO EASTERN NORTH THIS AFTERNOON...AND INTO WESTERN MINNESOTA EARLY THIS EVENING. TEMPERATURES WILL WARM INTO THE 80S THROUGH THE AFTERNOON...AND WHEN COMBINED WITH DEWPOINTS IN THE MIDDLE TO UPPER 60S...INSTABILITY WILL BE MAXIMIZED ACROSS THE SOUTHERN HALF OF THE RED RIVER VALLEY. AREA OF CONCERN...A SLIGHT RISK OF SEVERE THUNDERSTORMS EXISTS EAST OF A HALLOCK TO COOPERSTOWN AND ELLENDALE LINE. TIME...START AFTER 300 PM AND DIMINISH AFTER 900 PM. TYPE OF HAZARD...MAINLY LARGE HAIL. DAMAGING WINDS WILL BE A THREAT...AS WILL LOCALLY FLOODING RAINS FROM SLOW MOVING OR REPEAT THUNDERSTORM EVENTS. GUST
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 4:30 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 30 min |
| Sep 6, 5:15 PM CDT | Flash Flood Warning | FGF | Barnes | 6 hr |
| Sep 6, 5:45 PM CDT | Severe Thunderstorm Warning | FGF | Traill | 45 min |
| Sep 6, 6:17 PM CDT | Severe Thunderstorm Warning | FGF | Cass | 28 min |
Nearby
Severe Thunderstorm Warnings in North Dakota, 2001Every severe thunderstorm warning in 2001
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.