Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 202, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Sep 7, 1997, 7:44 PM CDT for Roseau County, Minnesota. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Sep 7, 1997, 7:44 PM CDT (00:44 UTC)
- Expired
- Sep 7, 1997, 8:15 PM CDT
- In force
- 31 min
- Issued by
- NWS Grand Forks, ND
- Area
- Whole counties
County Roseau County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 178 km from the middle of the area, began a volume at 00:47 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 nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 0.7 hours before the alert went out and 186 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 709 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 220 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFAR 080045 RRA SVRFAR MNC135-080115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 744 PM CDT SUN SEP 7 1997 THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST MINNESOTA ...NORTHERN ROSEAU COUNTY AT 744 PM...RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES NORTH OF ROSEAU MOVING SOUTHEAST AT 20 MPH. TOWNS IN THE PATH OF THIS STORM INCLUDE SALOL. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. GSF
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 7, 3:00 PM CDT, 4 hours 44 minutes earlier.
Area forecast discussion, Sep 7, 3:00 PM CDT, 4 hours 44 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 300 PM CDT SUN SEP 7 1997 FCST PROBLEM FOR TONIGHT WL BE TIMING OF FNT AND ANY ASSOCIATED SHRA/TSRA. LATEST SFC ANAL SHOWS FNT STRETCHING JUST W OF A DVL-BIS LN. BOTH MODELS HAVE SLOWED SYSTEM DOWN CONSIDERABLY FROM LAST RUN. GIVEN CURRENT TIMING...FNT SHD BE GOING THRU DVL LATER THIS PM...THEN THRU GFK ARND 06Z...AND NOT REACHING EXTRM EASTERN PTN OF CWA TIL EARLY MORNING. ADAP GRAPHICS SHOW GOOD MOISTURE CONV AHD OF FNT...WITH DWPTS POOLING IN LO-MID 60S ACRS MOST OF CWA. ADAP ALSO SHOWS AXIS OF LOW LI AND OF FNT WITH CAP ALMST GONE. ALTHO MODELS SHOW BULK OF ENERGY WITH H5 S/W RMNG N OF BORDER...ETA AND NGM BOTH SHOW WK VORT LOBE CROSSING AREA THRU PD. AS A RESULT...STILL THINK ITS WORTH KEEPING SHRA/TSRA IN FOR AN EVE PD OVR ERN ND...AND THRU MOST OF NIGHT IN NWRN MN GIVEN SLOW SPEED OF SYSTEM. FOR TEMPS...WITH NOT MUCH IN THE WAY OF CLD COVER EXPCTD IMMEDIATELY BEHIND THIS FNT...LOOK FOR COOLEST TEMPS OVR WRN PTN OF CWA...VCNTY DVL...WITH MILDEST OVR BJI/PKD. SUGGESTIONS FOR ND: DVL...PARTLY CLOUDY WITH A 20% CHC OF AN EVENING SHOWER OR TSTM. LOW 50-55. WIND NW 5-15. GFK...PARTLY CLOUDY WITH A 30% CHC OF A SHOWER OR TSTM UNTIL MIDNIGHT. LOW IN THE MIDDLE 50S. WIND S 5-15 BCMG W. FAR...PARTLY CLOUDY WITH A 30% CHC OF A SHOWER OR TSTM UNTIL MIDNIGHT. LOW 55-60. WIND S 5-15 BCMG W LATE. SUGGESTIONS FOR MN: FOR NW CORNER...HCO/ROX/TVF/FSE...PARTLY CLOUDY WITH A 30% CHC OF A SHOWER OR TSTM...ENDING AFTER MIDNIGHT. LOW MID 50S. WIND S 5-15 BCMG W LATE. FOR PTN OF W CNTRL...DTL/FFM...PARTLY CLOUDY WITH A 30% CHC OF A SHOWER OR TSTM...ENDING AFT MIDNIGHT. LOW 55-60. WIND SE 5-15 BCMG W LATE. FOR PERPETUALLY CLDY STRIP...BDE/BJI/PKD...MSTLY CLDY WITH A 30% CHC OF SHOWERS OR THUNDERSTORMS. LOW 55-60. WIND S-SE 5-15. STRAGER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 7:06 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 39 min |
| Sep 7, 7:34 PM CDT | Severe Thunderstorm Warning | FGF | Kittson | 26 min |
| Sep 7, 8:32 PM CDT | Severe Thunderstorm Warning | FGF | Marshall | 28 min |
| Sep 7, 9:03 PM CDT | Severe Thunderstorm Warning | FGF | Marshall, Polk | 27 min |
| Sep 7, 9:29 PM CDT | Severe Thunderstorm Warning | FGF | Pennington, Polk | 31 min |
| Sep 7, 10:00 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 30 min |
| Sep 7, 10:31 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 29 min |
| Sep 7, 11:37 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 38 min |
| Sep 7, 11:50 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 40 min |
| Sep 8, 12:30 AM CDT | Severe Thunderstorm Warning | FGF | Clay | 30 min |
| Sep 8, 12:40 AM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 35 min |
| Sep 8, 4:22 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 38 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 1997Every severe thunderstorm warning in 1997
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.