Alert archive / Minnesota / Tornado Warnings in 2020
Tornado Warning 12, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Jun 17, 2020, 8:48 PM CDT for Marshall County, Minnesota. It was in force for 27 min. 1 report 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
- Jun 17, 2020, 8:48 PM CDT (01:48 UTC)
- Expired
- Jun 17, 2020, 9:15 PM CDT
- In force
- 27 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Marshall County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 112 km from the middle of the area, began a volume at 01:48 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 |
|---|---|---|---|
| Jun 17, 8:49 PM CDT | TORNADO 1 | 4 Ssw Florian, MN | THIS TORNADO SNARLED AND SNAPPED TREES IN MULTIPLE SHELTER BELTS ALONG ITS ROUGHLY 4 MILE PATH, ENDING AROUND 1 MILE SOUTHEAST OF FLORIAN BY 856 PM CDT. PEAK WINDS ESTIMATED TO 105 MPH. MAXIMUM WIDTH TO 400 YARDS. |
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 |
|---|---|---|---|
| Jun 17, 5:21 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 00:00Z, 1.8 hours before the alert went out and 237 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
- 945 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 1962 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 155 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
445
WFUS53 KFGF 180148
TORFGF
MNC089-180215-
/O.NEW.KFGF.TO.W.0012.200618T0148Z-200618T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
848 PM CDT Wed Jun 17 2020
The National Weather Service in Grand Forks has issued a
* Tornado Warning for...
Central Marshall County in northwestern Minnesota...
* Until 915 PM CDT.
* At 847 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Radium, or 25 miles northwest of Thief River
Falls, moving northeast at 40 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
* Locations impacted include...
Strandquist, Radium and Old Mill State Park.
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.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4847 9621 4817 9661 4817 9667 4825 9676
4854 9655 4854 9652
TIME...MOT...LOC 0147Z 208DEG 34KT 4826 9668
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
CJ1 follow-up statement
147
WWUS53 KFGF 180200
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
900 PM CDT Wed Jun 17 2020
MNC089-180215-
/O.CON.KFGF.TO.W.0012.000000T0000Z-200618T0215Z/
Marshall MN-
900 PM CDT Wed Jun 17 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 915 PM CDT FOR NORTH
CENTRAL MARSHALL COUNTY...
At 900 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Florian, or 27 miles northwest of Thief River Falls,
moving northeast at 50 mph.
HAZARD...TORNADO.
SOURCE...Radar indicated rotation.
IMPACT...Expect damage to mobile homes, roofs, and vehicles.
Locations impacted include...
Strandquist and Old Mill State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4850 9632 4834 9647 4835 9653 4838 9662
4854 9655 4854 9652
TIME...MOT...LOC 0200Z 206DEG 42KT 4842 9656
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
TGThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 7:24 PM CDT | Special Weather Statement | FGF | Kittson | 51 min |
| Jun 17, 7:39 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Polk | 51 min |
| Jun 17, 7:43 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Roseau | 47 min |
| Jun 17, 8:10 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 65 min |
| Jun 17, 8:26 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Roseau | 49 min |
| Jun 17, 8:29 PM CDT | Special Weather Statement | FGF | Marshall | 61 min |
| Jun 17, 8:39 PM CDT | Severe Thunderstorm Warning | FGF | Marshall, Norman, Pennington, Polk, Red Lake, Roseau | 66 min |
| Jun 17, 8:51 PM CDT | Severe Thunderstorm Warning | FGF | Polk | 39 min |
| Jun 17, 9:02 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Lake of the Woods, Marshall, Roseau | 43 min |
| Jun 17, 9:13 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 62 min |
| Jun 17, 9:13 PM CDT | Tornado Warning | FGF | Kittson, Marshall, Roseau | 16 min |
| Jun 17, 9:19 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Pennington, Polk, Red Lake, Roseau | 56 min |
| Jun 17, 9:43 PM CDT | Severe Thunderstorm Warning | FGF | Beltrami, Kittson, Lake of the Woods, Marshall, Roseau | 62 min |
| Jun 17, 10:12 PM CDT | Severe Thunderstorm Warning | FGF | Norman, Polk | 63 min |
| Jun 17, 10:14 PM CDT | Severe Thunderstorm Warning | FGF | Kittson, Marshall, Roseau | 46 min |
| Jun 17, 10:58 PM CDT | Special Weather Statement | FGF | Roseau | 47 min |
| Jun 17, 11:41 PM CDT | Special Weather Statement | FGF | Marshall, Roseau | 49 min |
| Jun 18, 12:32 AM CDT | Special Weather Statement | FGF | Pennington, Polk, Red Lake | 58 min |
| Jun 18, 1:10 AM CDT | Areal Flood Advisory | FGF | Marshall, Roseau | 8 hr |
| Jun 18, 3:24 AM CDT | Special Weather Statement | FGF | Polk | 51 min |
| Jun 18, 7:21 AM CDT | River Flood Warning | FGF | Kittson | 9 days |
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.