Alert archive / Minnesota / Tornado Warnings in 2010
Tornado Warning 87, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 22, 2010, 6:17 PM CDT for Becker County, Otter Tail County, Minnesota. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 22, 2010, 6:17 PM CDT (23:17 UTC)
- Expired
- Jul 22, 2010, 7:15 PM CDT
- In force
- 58 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
Counties Becker County, MN, Otter Tail County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 160 km from the middle of the area, began a volume at 23:20 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this tornado warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.3 hours before the alert went out and 257 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
- 76 J/kg
- Mixed-layer CIN
- -134 J/kg
- Mixed-layer LCL
- 723 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
912 WFUS53 KFGF 222317 TORFGF MNC005-111-230015- /O.NEW.KFGF.TO.W.0087.100722T2317Z-100723T0015Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 617 PM CDT THU JUL 22 2010 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN BECKER COUNTY IN NORTHWEST MINNESOTA... NORTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA... * UNTIL 715 PM CDT * AT 615 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS LOCATED NEAR VERGAS...OR 9 MILES SOUTH OF DETROIT LAKES...MOVING TO THE EAST AT 35 MPH. * THE TORNADIC STORM WILL BE NEAR... FRAZEE AROUND 625 PM CDT. PERHAM AROUND 630 PM CDT. EVERGREEN AROUND 645 PM CDT. BUTLER AROUND 650 PM CDT. THEREAFTER SOME OTHER LOCATIONS IMPACTED BY THE TORNADIC STORM INCLUDE WOLF LAKE...HILLVIEW AND MIDWAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. && LAT...LON 4658 9591 4678 9591 4692 9516 4656 9517 TIME...MOT...LOC 2317Z 253DEG 30KT 4668 9579 $$ BRAMER
3 follow-up statements
922 WWUS53 KFGF 222331 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 631 PM CDT THU JUL 22 2010 MNC005-111-230015- /O.CON.KFGF.TO.W.0087.000000T0000Z-100723T0015Z/ BECKER MN-OTTER TAIL MN- 631 PM CDT THU JUL 22 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN BECKER COUNTY IN NORTHWEST MINNESOTA...AND NORTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA UNTIL 715 PM CDT... AT 629 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES SOUTHEAST OF FRAZEE...OR 12 MILES SOUTHEAST OF DETROIT LAKES...MOVING TO THE EAST AT 35 MPH. THE TORNADIC STORM WILL BE NEAR... EVERGREEN AROUND 645 PM CDT. BUTLER AROUND 650 PM CDT. WOLF LAKE AROUND 655 PM CDT. MIDWAY AND HILLVIEW AROUND 700 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. && LAT...LON 4658 9584 4678 9583 4692 9516 4656 9517 TIME...MOT...LOC 2330Z 253DEG 30KT 4671 9564 $$ HOPPES
769 WWUS53 KFGF 230001 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 701 PM CDT THU JUL 22 2010 MNC005-111-230015- /O.CON.KFGF.TO.W.0087.000000T0000Z-100723T0015Z/ BECKER MN-OTTER TAIL MN- 701 PM CDT THU JUL 22 2010 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN BECKER COUNTY IN NORTHWEST MINNESOTA...AND NORTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA UNTIL 715 PM CDT... AT 656 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 1 MILE NORTH OF PERHAM AND 6 MILES SOUTHWEST OF BUTLER...OR 22 MILES SOUTHEAST OF DETROIT LAKES...MOVING TO THE EAST AT 30 MPH. THE TORNADIC STORM WILL BE NEAR... BUTLER AROUND 705 PM CDT. WOLF LAKE AROUND 710 PM CDT. MIDWAY AND HILLVIEW AROUND 715 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. && LAT...LON 4658 9584 4678 9583 4692 9516 4656 9517 TIME...MOT...LOC 0000Z 256DEG 29KT 4664 9540 $$ GUST
014 WWUS53 KFGF 230017 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 717 PM CDT THU JUL 22 2010 MNC005-111-230027- /O.EXP.KFGF.TO.W.0087.000000T0000Z-100723T0015Z/ BECKER MN-OTTER TAIL MN- 717 PM CDT THU JUL 22 2010 ...THE TORNADO WARNING FOR SOUTHEASTERN BECKER COUNTY IN NORTHWEST MINNESOTA...AND NORTHEASTERN OTTER TAIL COUNTY IN WEST CENTRAL MINNESOTA HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4658 9584 4678 9583 4692 9516 4656 9517 TIME...MOT...LOC 0001Z 256DEG 29KT 4664 9539 $$ GUST
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Jul 22, 1:29 PM CDT, 4 hours 48 minutes earlier.
Area forecast discussion, Jul 22, 1:29 PM CDT, 4 hours 48 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 129 PM CDT THU JUL 22 2010 .SHORT TERM... THE MAIN CHALLENGE FOR THIS FORECAST WILL BE SEVERE/HEAVY RAIN POTENTIAL THIS AFTERNOON AND EVENING...AND ANOTHER WAVE FOR FRI NIGHT INTO EARLY SAT. MODELS ARE IN GOOD AGREEMENT OVERALL...AND PREFER THE NAM FRONTAL PLACEMENT AND MOISTURE/INSTABILITY FIELDS. FOR THE REST OF THIS AFTERNOON AND EVENING...A STRONG SHORTWAVE FOR LATE JULY WILL MOVE INTO EASTERN ND THIS AFTERNOON. THIS WILL COMBINE WITH AMPLE MOISTURE PER DEWPOINTS WELL INTO THE MID/UPPER 60S AND PWATS APPROACHING 1.75 IN THE NORTH. THERE WILL ALSO BE STRONG DEEP LAYERED SHEAR AROUND 50KT IN THE 0-6KM LAYER...IN ADDITION TO MLCAPES AROUND 1000 J/KG WHERE ANY INSOLATION CAN BREAK THROUGH CLOUD CANOPY. LASTLY...A SFC LOW IS PROGGED TO DEVELOP NEAR GRAND FORKS BY 00Z...WITH A WELL DEFINED TROUGH RUNNING FROM NORTH TO SOUTH. GIVEN THIS SET UP...WILL MENTION SEVERE WORDING AND HEAVY RAIN ALONG AND WEST OF THE VALLEY FROM 21Z-00Z. WILL ALSO MENTION HEAVY RAIN IN NW MN FROM 00-03Z...WITH SOME AREAS SEEING AN INCH OR MORE IN A SHORT TIME. CONVECTION SHOULD MOVE OUT OF THE AREA QUICKLY AFTER 06Z AS THE SHORTWAVE PASSES THROUGH. FOR FRI/FRI NIGHT...ANOTHER SHORTWAVE WILL TARGET MAINLY THE SOUTHERN 1/3 OF THE FORECAST AREA. INSTABILITY WILL BE GREATEST IN THE FAR SOUTH...WITH PWATS ONCE AGAIN OVER 1 INCH. THEREFORE...WILL INCREASE POPS BY FRI NIGHT. ON SAT/SUN...ANY LINGERING CONVECTION SAT MORNING SHOULD MOVE OUT OF ALL AREAS BY SAT AFTERNOON. THEREAFTER EXPECT A SLOW WARMING TREND SLIGHTLY ABOVE NORMAL BY SUNDAY WITH A SHORTWAVE RIDGE BUILDING INTO THE AREA. .LONG TERM [SUN NIGHT - WED]... THE MODELS ARE IN DECENT AGREEMENT. SUNDAY NIGHT LOOKS DRY...BUT THE MODELS INDICATE A COLD FRONT WILL TRANSITION FROM SOUTH CENTRAL CANADA TO THE NORTHERN PLAINS EARLY NEXT WORK WEEK...PROVIDING A CHANCE OF SHOWERS AND THUNDERSTORMS. THE FRONT COULD STALL THROUGH WEDNESDAY...SO CHANCES OF PCPN REMAIN THROUGH THE FORECAST PERIOD. TEMPERATURES SHOULD BE NEAR OR SLIGHTLY ABOVE NORMAL. && .AVIATION... IFR/MVFR CIGS AND VFR/MVFR VSBYS ARE LIKELY TO CONTINUE THROUGH AT LEAST THIS EVENING FROM SHOWERS AND THUNDERSTORMS AS A COLD FRONT PUSHES THROUGH THE NORTHERN PLAINS. THE BEST CHANCE FOR THUNDERSTORMS IS IN THE VALLEY...SO GFK AND FAR WERE GIVEN A TEMPO OF -TSRA FOR THE LATE AFTERNOON. THE BULK OF PCPN SHOULD MOSTLY BE RAIN SHOWERS AT DVL/TVF/BJI...BUT CANNOT RULE OUT SOME LIGHTNING. THE SOUTHERLY AND SOUTHEASTERLY WINDS ACROSS AND EAST OF THE VALLEY WILL SHIFT TO THE NORTHWEST THIS EVENING ONCE THE COLD FRONT PASSES THROUGH EACH SITE. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && DK/GROCHOCINSKI
Hazardous weather outlook, Jul 22, 2:55 PM CDT, 3 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 255 PM CDT THU JUL 22 2010 MNZ002-003-005-006-008-009-013>017-022>024-027>032-040-NDZ039-053- 232000- NORMAN-CLAY-ROSEAU-LAKE OF THE WOODS-EAST MARSHALL-NORTH BELTRAMI- PENNINGTON-RED LAKE-EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI- MAHNOMEN-SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN- WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-CASS-RICHLAND- 255 PM CDT THU JUL 22 2010 ...THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT A FEW SEVERE THUNDERSTORMS MAY DEVELOP THIS AFTERNOON AND EVENING FROM 3PM UNTIL 10PM IN THE SOUTHERN RED RIVER VALLEY INTO PORTIONS OF WESTERN MINNESOTA. THE MAIN RISK WITH THESE STORMS WILL BE LARGE HAIL AND DAMAGING WINDS...ALONG WITH HEAVY RAIN. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORMS ARE POSSIBLE ONCE AGAIN FRIDAY NIGHT INTO SATURDAY MORNING...ALTHOUGH NO SEVERE WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING. MNZ001-004-007-NDZ006>008-014>016-024-026>030-038-049-052-054- 232000- WEST POLK-KITTSON-WEST MARSHALL-TOWNER-CAVALIER-PEMBINA-BENSON- RAMSEY-EASTERN WALSH COUNTY-EDDY-NELSON-GRAND FORKS-GRIGGS-STEELE- TRAILL-BARNES-RANSOM-SARGENT-WESTERN WALSH COUNTY- 255 PM CDT THU JUL 22 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING...WITH HEAVY RAIN POSSIBLE ALONG WITH SMALL HAIL. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORMS ARE POSSIBLE FRIDAY NIGHT INTO SATURDAY MORNING...ALTHOUGH NO SEVERE WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. DK
In the hours before
Special weather statement, Jul 22, 5:03 PM CDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 503 PM CDT THU JUL 22 2010 MNZ006-009-222245- LAKE OF THE WOODS MN-NORTH BELTRAMI MN- 503 PM CDT THU JUL 22 2010 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BELTRAMI AND SOUTHERN LAKE OF THE WOODS COUNTIES UNTIL 545 PM CDT... AT 501 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A THUNDERSTORM 31 MILES SOUTHWEST OF BAUDETTE...OR 47 MILES SOUTHEAST OF ROSEAU...MOVING TO THE EAST AT 35 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THE STORM...ALONG WITH HEAVY RAIN. THE STORM WILL BE NEAR... FAUNCE AROUND 510 PM CDT. CARP AROUND 530 PM CDT. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. BRAMER
Special weather statement, Jul 22, 5:44 PM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 544 PM CDT THU JUL 22 2010 MNZ027-028-222330- EAST BECKER MN-WEST BECKER MN- 544 PM CDT THU JUL 22 2010 ...SIGNIFICANT WEATHER ADVISORY FOR BECKER COUNTY UNTIL 630 PM CDT... AT 543 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A THUNDERSTORM 6 MILES WEST OF DETROIT LAKES...MOVING TO THE EAST AT 40 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THE STORM...ALONG WITH HEAVY RAIN. THE STORM WILL BE NEAR... DETROIT LAKES...WESTBURY AND CALLAWAY AROUND 550 PM CDT. WHITE EARTH AND RICHWOOD AROUND 555 PM CDT. FRAZEE AROUND 600 PM CDT. ROCHERT AROUND 605 PM CDT. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. BRAMER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 22, 5:53 PM CDT | Tornado Warning | FGF | Becker | 67 min |
| Jul 22, 5:58 PM CDT | Tornado Warning | FGF | Beltrami | 32 min |
| Jul 22, 6:15 PM CDT | Tornado Warning | FGF | Wilkin | 30 min |
| Jul 22, 6:40 PM CDT | Tornado Warning | FGF | Grant | 50 min |
Nearby
Tornado Warnings in Minnesota, 2010Every tornado warning in 2010Tornadoes in 2010
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.