Alert archive / Minnesota / Tornado Warnings in 2012
Tornado Warning 9, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jul 12, 2012, 4:15 PM CDT for Polk County, Minnesota; Grand Forks County, North Dakota. It was in force for 45 min. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 12, 2012, 4:15 PM CDT (21:15 UTC)
- Expired
- Jul 12, 2012, 5:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
Counties Polk County, MN, Grand Forks County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 52 km from the middle of the area, began a volume at 21:18 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 |
|---|---|---|---|
| Jul 12, 4:35 PM CDT | TORNADO 1 | 4 Nne Reynolds, ND | A STORM DAMAGE SURVEY SHOWED EVIDENCE OF AN EF-1 TORNADO THAT LASTED FROM ABOUT 435 TO 445 PM. ESTIMATED PATH WIDTH WAS 100 TO 150 YARDS WITH PEAK WINDS AROUND 90 TO 100 MPH. THE TORNADO TRACKED FROM 3.8 MILES NNE OF REYNOLDS TO 5.7 MILES NE OF REYNOLDS. |
| Jul 12, 4:38 PM CDT | TORNADO 1 | 3 Nne Reynolds, ND | THIS TORNADO TRACKED FOR ABOUT 2.5 MILES FROM ABOUT 3.5 MILES NNE OF REYNOLDS ABOUT 6 MILES NE OF REYNOLDS BY 448 PM CDT. THE TORNADO SNAPPED SEVERAL COTTONWOOD AND ASH TREES IN FARM SHELTER BELTS AND TWO WOODEN POWER ALONG A COUNTY ROAD. STACKED AND BANDED ST |
| Jul 12, 4:45 PM CDT | HAIL 1 | 4 Ese Thompson, ND | |
| Jul 12, 4:45 PM CDT | HAIL 1 | 4 Se Thompson, ND |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 9.3 hours before the alert went out and 291 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
- 80 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 1401 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
122 WFUS53 KFGF 122115 TORFGF MNC119-NDC035-122200- /O.NEW.KFGF.TO.W.0009.120712T2115Z-120712T2200Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 415 PM CDT THU JUL 12 2012 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA... EASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA... * UNTIL 500 PM CDT * AT 414 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THE STORM WAS LOCATED 5 MILES NORTHWEST OF GRAND FORKS...MOVING TO THE NORTHEAST AT 15 MPH. * THE TORNADIC STORM WILL BE NEAR... EAST GRAND FORKS AROUND 430 PM CDT. MANVEL AROUND 440 PM CDT. FOR MOTORISTS ON INTERSTATE 29...THE TORNADIC STORM WILL BE BETWEEN...MILE MARKER 142 AROUND 425 PM CDT...AND MILE MARKER 148 AROUND 435 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 4817 9715 4817 9692 4768 9701 4768 9744 TIME...MOT...LOC 2116Z 226DEG 12KT 4795 9716 $$ BRAMER
3 follow-up statements
226 WWUS53 KFGF 122129 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 429 PM CDT THU JUL 12 2012 MNC119-NDC035-122200- /O.CON.KFGF.TO.W.0009.000000T0000Z-120712T2200Z/ GRAND FORKS ND-POLK MN- 429 PM CDT THU JUL 12 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA...AND EASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA UNTIL 500 PM CDT... AT 428 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES NORTHWEST OF GRAND FORKS...MOVING TO THE NORTHEAST AT 15 MPH. THE TORNADIC STORM WILL BE NEAR... MANVEL AROUND 435 PM CDT. EAST GRAND FORKS AROUND 445 PM CDT. FOR MOTORISTS ON INTERSTATE 29...THE TORNADIC STORM WILL BE BETWEEN...MILE MARKER 139 AROUND 430 PM CDT...AND MILE MARKER 145 AROUND 440 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. && LAT...LON 4817 9715 4817 9692 4768 9701 4768 9730 TIME...MOT...LOC 2129Z 242DEG 12KT 4794 9710 $$ BRAMER
445 WWUS53 KFGF 122145 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 445 PM CDT THU JUL 12 2012 MNC119-NDC035-122200- /O.CON.KFGF.TO.W.0009.000000T0000Z-120712T2200Z/ GRAND FORKS ND-POLK MN- 445 PM CDT THU JUL 12 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA...AND SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA UNTIL 500 PM CDT... AT 442 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 4 MILES SOUTHEAST OF THOMPSON...OR 13 MILES SOUTH OF GRAND FORKS...MOVING TO THE NORTHEAST AT 20 MPH. THE THUNDERSTORM NORTH OF GRAND FORKS WAS BEGINNING TO WEAKEN. THE TORNADIC STORM WILL BE NEAR... GRAND FORKS AND EAST GRAND FORKS AROUND 500 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS TORNADO ABANDON CARS AND MOBILE HOMES FOR A STURDY BUILDING. HEAVY RAINFALL MAY OBSCURE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE TORNADO. TAKE COVER NOW. && LAT...LON 4768 9717 4817 9709 4817 9692 4768 9701 TIME...MOT...LOC 2144Z 227DEG 15KT 4773 9704 $$ BRAMER
267 WWUS53 KFGF 122159 SVSFGF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 459 PM CDT THU JUL 12 2012 MNC119-NDC035-122209- /O.EXP.KFGF.TO.W.0009.000000T0000Z-120712T2200Z/ GRAND FORKS ND-POLK MN- 459 PM CDT THU JUL 12 2012 ...THE TORNADO WARNING FOR NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA...AND SOUTHEASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA WILL EXPIRE AT 500 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4768 9717 4817 9709 4817 9692 4768 9701 TIME...MOT...LOC 2159Z 227DEG 15KT 4777 9697 $$ BRAMER
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 4:22 PM CDT | Special Weather Statement | FGF | Norman | 53 min |
| Jul 12, 5:03 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 57 min |
| Jul 12, 5:21 PM CDT | Special Weather Statement | FGF | Kittson | 54 min |
| Jul 12, 5:41 PM CDT | Severe Thunderstorm Warning | FGF | Lake of the Woods, Roseau | 25 min |
| Jul 12, 6:10 PM CDT | Special Weather Statement | FGF | Lake of the Woods | 65 min |
| Jul 12, 6:15 PM CDT | Special Weather Statement | FGF | Polk | 60 min |
| Jul 12, 6:18 PM CDT | Special Weather Statement | FGF | Norman | 57 min |
| Jul 12, 6:22 PM CDT | Special Weather Statement | FGF | Kittson | 53 min |
| Jul 12, 6:39 PM CDT | Severe Thunderstorm Warning | FGF | Roseau | 51 min |
| Jul 12, 6:45 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 60 min |
| Jul 12, 6:47 PM CDT | Severe Thunderstorm Warning | FGF | Norman | 35 min |
| Jul 12, 3:36 PM CDT | Special Weather Statement | FGF | Walsh | 54 min |
| Jul 12, 3:58 PM CDT | Special Weather Statement | FGF | Grand Forks | 62 min |
| Jul 12, 4:56 PM CDT | Special Weather Statement | FGF | Walsh | 64 min |
Nearby
Tornado Warnings in Minnesota, 2012Tornado Warnings in North Dakota, 2012Every tornado warning in 2012Tornadoes in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.