Alert archive / North Dakota / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 385, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 6, 2001, 5:45 PM CDT for Traill County, North Dakota. It was in force for 45 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
- Sep 6, 2001, 5:45 PM CDT (22:45 UTC)
- Expired
- Sep 6, 2001, 6:30 PM CDT
- In force
- 45 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 13 km from the middle of the area, began a volume at 22:49 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 6, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.8 hours before the alert went out and 271 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.
938 WUUS53 KFGF 062247 SVRFAR NDC097-062330- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS 545 PM CDT THU SEP 6 2001 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA. * UNTIL 630 PM CDT. * AT 544 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES SOUTHEAST OF ROSEVILLE...OR ABOUT 30 MILES SOUTH OF GRAND FORKS...MOVEMENT WAS TO THE NORTHEAST AT 20 MPH. ANOTHER DEVELOPING SEVERE THUNDERSTORM WAS LOCATED NEAR HILLSBORO AND THIS STORM IS ALSO MOVING TO THE NORTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... MAYVILLE AT 550 PM... HILLSBORO AT 555 AND 615 PM... CUMMINGS AT 615 PM AND BUXTON AT 625 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 4742 9750 4729 9731 4731 9688 4768 9707 $$ 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, 5:30 PM CDT, 15 minutes earlier.
Area forecast discussion, Sep 6, 5:30 PM CDT, 15 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS 530 PM CDT THU SEP 6 2001 ...WILL BE BRIEF WITH SEVERE WEATHER ONGOING... SENT OUT A FLASH FLOOD WATCH FOR AREAS ALONG AND IMMEDIATELY EAST OF THE SLOW MOVING COLD FRONT. INTENSE MOISTURE FLUX CONVERGENCE ALONG FRONT...COUPLED WITH PRECIPITABLE WATERS TO 1.75 INCHES AND APPROACHING SHORTWAVE SPELL CONTINUATION OF TRAINING THUNDERSTORMS. NEW RUC ALSO IS PICKING UP ON SLOW MOVING FRONT...WITH 850 JET CONTINUING TO FEED INTO AREA ALONG FRONT. .FGF...SEVERE THUNDERSTORM WATCH FOR SOUTHEAST ND AND PORTIONS OF WEST CENTRAL AND NORTHWEST MINNESOTA...FLASH FLOOD WATCH ALONG AND 60 MILES EAST OF A VALLEY CITY TO HILLSBORO TO WARROD LINE. KELLENBENZ
In the hours before
Special weather statement, Sep 6, 1:15 PM CDT, 4 hours 30 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, 5:18 PM CDT | Severe Thunderstorm Warning | FGF | Barnes | 42 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.