Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 129, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 16, 1997, 6:11 PM CDT for Roseau County, Minnesota. It was in force for 34 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
- Jul 16, 1997, 6:11 PM CDT (23:11 UTC)
- Expired
- Jul 16, 1997, 6:45 PM CDT
- In force
- 34 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 23:14 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 12:00Z, 11.2 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
- 405 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1474 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 119 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 162312 RRA SVRFAR MNC135-162345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 611 PM CDT WED JUL 16 1997 THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST MINNESOTA ...WESTERN ROSEAU COUNTY AT 610 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 30 MILES NORTHWEST OF ROSEAU OR NEAR CARIBOU. MOVEMENT WAS SOUTHEAST AT 35 MPH. THE THUNDERSTORM WILL MOVE THROUGH THE BADGER AND GREENBUSH AREAS AROUND 630 PM CDT. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. HOPPES
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 Jul 16, 3:43 PM CDT, 2 hours 28 minutes earlier.
Area forecast discussion, Jul 16, 3:43 PM CDT, 2 hours 28 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 342 PM CDT WED JUL 16 1997 FIRST PERIOD DISCUSSION...HI CAPES ARE FCST REMAIN ACRS SD AND SRN MN OVRNT WITH LWR VALUES IN ERN ND AND NRN MN. HOWEVER AREAS TO THE S ARE CAPPED UNDR SRN ROCKIES RIDGE. SFC TROF LINE WAS OVR ERN ND AND A WK FNTL BNDRY WAS ACRS SRN ND. WK CNVG XPCTD ALNG SRN ND SFC BNDRY AND H8 CNVGT FLO. COOLER AIR SLIDES SE ALFT IN NE CNTYS WHILE WM AIR MOVS N IN SW CNTYS. WM DRY AIR MASS UNDR INVERTED VEE SNDGS SHUD MAKE FOR POT GOOD WND EVENT AND SOME LARGE HAIL. ELEVATED CONVECTION XPCTD SO SFC PARAMETERS MAY NOT GIVE CLUES WHERE CONVECTION WL BEGIN. STRMS MAY FIRE ALNG CD-WM AIR INTERFACE ALFT WHICH TEND TO THINK WL BE ALNG SRN ND. MOS TEMPS LOOK GD. UPR 50S IN THE N TO THE MID 60S IN THE S. HOPPES
In the hours before
Special weather statement, Jul 16, 2:55 PM CDT, 3 hours 16 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-171200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 255 PM CDT WED JUL 16 1997 ...SEVERE WEATHER IS EXPECTED TODAY IN PARTS OF EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA... A MODERATE RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS SOUTHEAST NORTH DAKOTA AND ADJACENT PARTS OF NORTHWEST MINNESOTA SOUTH AND EAST OF A LINE FROM LISBON NORTH DAKOTA TO FARGO TO PARK RAPIDS MINNESOTA FOR LATE THIS AFTERNOON AND WEDNESDAY NIGHT. A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS THE REST OF EASTERN NORTH DAKOTA AND THE REST OF NORTHWEST MINNESOTA. THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON OR EARLY EVENING IN SOUTHEAST NORTH DAKOTA AND MOVE EAST INTO NORTHWEST MINNESOTA. THE THUNDERSTORMS WILL MOST LIKELY PRODUCE DAMAGING WINDS AND SOME LARGE HAIL. WARM UNSTABLE AIR WILL REMAIN ACRSS THE NORTHERN PLAINS ESPECIALLY OVER SOUTH DAKOTA AND SOUTHERN MINNESOTA. HOWEVER AREAS TO THE SOUTH WILL BE INITIALLY CAPPED. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A WEAK FRONTAL BOUNDARY ACROSS SOUTHERN NORTH DAKOTA. HOPPES
Special weather statement, Jul 16, 2:57 PM CDT, 3 hours 14 minutes before
MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052-053-171200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 255 PM CDT WED JUL 16 1997 ...SEVERE WEATHER IS EXPECTED TODAY IN PARTS OF EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA... A MODERATE RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS SOUTHEAST NORTH DAKOTA AND ADJACENT PARTS OF NORTHWEST MINNESOTA SOUTH AND EAST OF A LINE FROM LISBON NORTH DAKOTA TO FARGO TO PARK RAPIDS MINNESOTA FOR LATE THIS AFTERNOON AND WEDNESDAY NIGHT. A SLIGHT RISK OF SEVERE THUNDERSTORMS IS EXPECTED ACROSS THE REST OF EASTERN NORTH DAKOTA AND THE REST OF NORTHWEST MINNESOTA. THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON OR EARLY EVENING IN SOUTHEAST NORTH DAKOTA AND MOVE EAST INTO NORTHWEST MINNESOTA. THE THUNDERSTORMS WILL MOST LIKELY PRODUCE DAMAGING WINDS AND SOME LARGE HAIL. WARM UNSTABLE AIR WILL REMAIN ACRSS THE NORTHERN PLAINS ESPECIALLY OVER SOUTH DAKOTA AND SOUTHERN MINNESOTA. HOWEVER AREAS TO THE SOUTH WILL BE INITIALLY CAPPED. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG A WEAK FRONTAL BOUNDARY ACROSS SOUTHERN NORTH DAKOTA. HOPPES
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 5:45 PM CDT | Severe Thunderstorm Warning | FGF | Kittson | 30 min |
| Jul 16, 6:53 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 37 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.