Alert archive / Minnesota / Tornado Warnings in 2020
Tornado Warning 33, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 9, 2020, 2:42 PM CDT for 6 counties in Minnesota. It was in force for 48 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
- Aug 9, 2020, 2:42 PM CDT (19:42 UTC)
- Expired
- Aug 9, 2020, 3:30 PM CDT
- In force
- 48 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Beltrami County, MN, Clearwater County, MN, Marshall County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 126 km from the middle of the area, began a volume at 19:45 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 |
|---|---|---|---|
| Aug 9, 2:51 PM CDT | TSTM WND DMG | 4 N Mavie, MN | DOORS AND END OF A POLESHED BLOWN OUT. TREES BLOWN DOWN. DEBRIS DAMAGE TO HOUSE AND VEHICLE WINDOWS AND HOUSE SIDING. TIME ESTIMATED BASED ON RADAR. |
| Aug 9, 2:51 PM CDT | TSTM WND DMG | 4 N Mavie, MN | DOORS AND END OF A POLESHED BLOWN OUT. TREES BLOWN DOWN. DEBRIS DAMAGE TO HOUSE AND VEHICLE WINDOWS AND HOUSE SIDING. TIME ESTIMATED BASED ON RADAR. |
| Aug 9, 3:00 PM CDT | TSTM WND GST 59 | 9 Nne Mavie, MN | PEAK WIND MEASURED AT THE AGASSIZ RAWS STATION. |
| Aug 9, 3:00 PM CDT | TSTM WND GST 59 | 9 Nne Mavie, MN | PEAK WIND MEASURED AT THE AGASSIZ RAWS STATION. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 9, 12:18 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 7.7 hours before the alert went out and 196 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
- 2237 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 53 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
608
WFUS53 KFGF 091942
TORFGF
MNC007-029-089-113-119-125-092030-
/O.NEW.KFGF.TO.W.0033.200809T1942Z-200809T2030Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
242 PM CDT Sun Aug 9 2020
The National Weather Service in Grand Forks has issued a
* Tornado Warning for...
Southeastern Marshall County in northwestern Minnesota...
Northeastern Red Lake County in northwestern Minnesota...
East central Polk County in northwestern Minnesota...
Northwestern Beltrami County in north central Minnesota...
Eastern Pennington County in northwestern Minnesota...
Northwestern Clearwater County in northwestern Minnesota...
* Until 330 PM CDT.
* At 241 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles northwest of Mavie, or 9 miles northeast of
Thief River Falls, moving east at 35 mph. There is another
potential tornado near Thief River Falls, moving east at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
* This dangerous storm will be near...
Mavie around 250 PM CDT.
Goodridge around 300 PM CDT.
Espelie around 310 PM CDT.
Jelle around 330 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4798 9614 4826 9611 4831 9533 4775 9543
TIME...MOT...LOC 1941Z 281DEG 32KT 4823 9604
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
TG3 follow-up statements
444
WWUS53 KFGF 092001
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
301 PM CDT Sun Aug 9 2020
MNC007-029-089-113-119-125-092030-
/O.CON.KFGF.TO.W.0033.000000T0000Z-200809T2030Z/
Marshall MN-Red Lake MN-Polk MN-Beltrami MN-Pennington MN-
Clearwater MN-
301 PM CDT Sun Aug 9 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR
SOUTHEASTERN MARSHALL...NORTHEASTERN RED LAKE...EAST CENTRAL POLK...
NORTHWESTERN BELTRAMI...EASTERN PENNINGTON AND NORTHWESTERN
CLEARWATER COUNTIES...
At 301 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Espelie, or 24 miles east of Thief River Falls,
moving east at 45 mph.
HAZARD...TORNADO.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
This dangerous storm will be near...
Jelle around 315 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4794 9601 4827 9594 4831 9533 4775 9543
TIME...MOT...LOC 2001Z 277DEG 40KT 4818 9565
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
TG817
WWUS53 KFGF 092019
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
319 PM CDT Sun Aug 9 2020
MNC007-029-089-113-119-125-092030-
/O.CON.KFGF.TO.W.0033.000000T0000Z-200809T2030Z/
Marshall MN-Red Lake MN-Polk MN-Beltrami MN-Pennington MN-
Clearwater MN-
319 PM CDT Sun Aug 9 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR
SOUTHEASTERN MARSHALL...NORTHEASTERN RED LAKE...EAST CENTRAL POLK...
NORTHWESTERN BELTRAMI...EASTERN PENNINGTON AND NORTHWESTERN
CLEARWATER COUNTIES...
At 319 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Jelle, or 35 miles east of Thief River Falls, moving
east at 35 mph.
HAZARD...TORNADO.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
This dangerous storm will be near...
Fourtown around 325 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4788 9581 4829 9568 4831 9533 4777 9543
TIME...MOT...LOC 2019Z 275DEG 31KT 4818 9542
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
TG622
WWUS53 KFGF 092028
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
328 PM CDT Sun Aug 9 2020
MNC007-029-089-113-119-125-092038-
/O.EXP.KFGF.TO.W.0033.000000T0000Z-200809T2030Z/
Marshall MN-Red Lake MN-Polk MN-Beltrami MN-Pennington MN-
Clearwater MN-
328 PM CDT Sun Aug 9 2020
...THE TORNADO WARNING FOR SOUTHEASTERN MARSHALL...NORTHEASTERN RED
LAKE...EAST CENTRAL POLK...NORTHWESTERN BELTRAMI...EASTERN PENNINGTON
AND NORTHWESTERN CLEARWATER COUNTIES WILL EXPIRE AT 330 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
north central and northwestern Minnesota.
LAT...LON 4788 9581 4829 9568 4831 9533 4777 9543
TIME...MOT...LOC 2028Z 281DEG 32KT 4817 9534
$$
TGThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 4:36 AM CDT | Special Weather Statement | FGF | Grant, Wilkin | 54 min |
| Aug 9, 4:55 AM CDT | Special Weather Statement | FGF | Otter Tail | 65 min |
| Aug 9, 5:49 AM CDT | Special Weather Statement | FGF | Becker, Wadena | 56 min |
| Aug 9, 7:10 AM CDT | Special Weather Statement | FGF | Norman | 65 min |
| Aug 9, 8:41 AM CDT | Special Weather Statement | FGF | Lake of the Woods | 64 min |
| Aug 9, 12:21 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall | 54 min |
| Aug 9, 1:08 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Roseau | 67 min |
| Aug 9, 1:39 PM CDT | Severe Thunderstorm Warning | FGF | Marshall, Polk | 66 min |
| Aug 9, 2:01 PM CDT | Tornado Warning | FGF | Marshall, Pennington, Polk | 44 min |
| Aug 9, 2:05 PM CDT | Severe Thunderstorm Warning | FGF | Marshall, Pennington, Polk, Red Lake | 55 min |
| Aug 9, 2:10 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk, Red Lake | 65 min |
| Aug 9, 2:20 PM CDT | Tornado Warning | FGF | Beltrami, Marshall | 40 min |
| Aug 9, 2:49 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Lake of the Woods, Marshall, Roseau | 56 min |
| Aug 9, 2:52 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Norman | 53 min |
| Aug 9, 2:57 PM CDT | Tornado Warning | FGF | Beltrami, Marshall | 33 min |
| Aug 9, 3:06 PM CDT | Tornado Warning | FGF | Lake of the Woods, Roseau | 24 min |
| Aug 9, 3:12 PM CDT | Severe Thunderstorm Warning | FGF | Polk, Red Lake | 63 min |
| Aug 9, 3:18 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Lake of the Woods, Marshall, Pennington, Polk and 2 more | 57 min |
| Aug 9, 3:20 PM CDT | Severe Thunderstorm Warning | FGF | Clay | 22 min |
| Aug 9, 3:35 PM CDT | Tornado Warning | FGF | Clay, Norman | 18 min |
| Aug 9, 3:41 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Clearwater, Hubbard, Mahnomen, Norman, Polk and 1 more | 64 min |
| Aug 9, 3:47 PM CDT | Tornado Warning | FGF | Lake of the Woods | 28 min |
| Aug 9, 3:53 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Clay, Clearwater, Hubbard, Mahnomen, Norman | 48 min |
| Aug 9, 4:38 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Beltrami, Clearwater, Hubbard, Mahnomen, Norman and 1 more | 52 min |
| Aug 9, 5:28 PM CDT | Special Weather Statement | FGF | Hubbard | 32 min |
| Aug 9, 5:31 PM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 29 min |
| Aug 9, 5:33 PM CDT | Special Weather Statement | FGF | Clearwater | 57 min |
Nearby
Tornado Warnings in Minnesota, 2020Every tornado warning in 2020Tornadoes in 2020
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.