Alert archive / Minnesota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 126, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Oct 9, 2021, 7:26 PM CDT for Grant County, Otter Tail County, Wilkin County, Minnesota; Ransom County, Richland County, Sargent County, North Dakota. It was in force for 64 min. 3 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
- Oct 9, 2021, 7:26 PM CDT (00:26 UTC)
- Expired
- Oct 9, 2021, 8:30 PM CDT
- In force
- 64 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Possible
- Damage threat
- Considerable
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Grant County, MN, Otter Tail County, MN, Wilkin County, MN, Ransom County, ND, Richland County, ND, Sargent County, ND
The radar
The Aberdeen radar (KABR), 164 km from the middle of the area, began a volume at 00:31 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 |
|---|---|---|---|
| Oct 9, 7:33 PM CDT | TSTM WND GST 86 | 4 W Herman, MN | HERMAN RWIS REPORTS 86MPH WIND GUST. |
| Oct 9, 8:15 PM CDT | TSTM WND DMG | Fergus Falls, MN | REPORT OF SEVERAL TREES DOWN AND ROADS UNPASSABLE DUE TO BRANCH DEBRIS IN TOWN. TIME ESTIMATED. |
| Oct 9, 8:15 PM CDT | TSTM WND DMG | Fergus Falls, MN | REPORTS FROM FERGUSNOW.COM OF SEVERAL TREES DOWN AND ROADS UNPASSABLE IN TOWN. TIME ESTIMATED. |
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 |
|---|---|---|---|
| Oct 9, 2:56 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 9, 6:34 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 0.4 hours before the alert went out and 197 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
- 1552 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 150 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
273
WUUS53 KFGF 100026
SVRFGF
MNC051-111-167-NDC073-077-081-100130-
/O.NEW.KFGF.SV.W.0126.211010T0026Z-211010T0130Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
726 PM CDT Sat Oct 9 2021
The National Weather Service in Grand Forks has issued a
* Severe Thunderstorm Warning for...
Southwestern Otter Tail County in west central Minnesota...
Grant County in west central Minnesota...
Wilkin County in west central Minnesota...
Eastern Ransom County in southeastern North Dakota...
Richland County in southeastern North Dakota...
Northeastern Sargent County in southeastern North Dakota...
* Until 830 PM CDT.
* At 726 PM CDT, severe thunderstorms were located along a line
extending from near McLeod to near Doran to near Norcross, moving
northeast at 55 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Severe thunderstorms will be near...
Norcross, Doran and Herman around 730 PM CDT.
Everdell around 735 PM CDT.
Foxhome around 740 PM CDT.
Elbow Lake and Wendell around 745 PM CDT.
Other locations in the path of these severe thunderstorms include
Carlisle, Rothsay and Elizabeth.
This includes the following highways...
Interstate 29 between mile markers 7 and 40.
Interstate 94 in Minnesota between mile markers 40 and 81.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4576 9625 4602 9627 4602 9657 4593 9656
4594 9664 4638 9768 4658 9749 4647 9621
4611 9576 4576 9576
TIME...MOT...LOC 0026Z 218DEG 49KT 4639 9740 4617 9652 4582 9625
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
DJR1 follow-up statement
417
WWUS53 KFGF 100051
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
751 PM CDT Sat Oct 9 2021
NDC081-100100-
/O.CAN.KFGF.SV.W.0126.000000T0000Z-211010T0130Z/
Sargent ND-
751 PM CDT Sat Oct 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SARGENT COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
west central Minnesota...and southeastern North Dakota. A Severe
Thunderstorm Watch also remains in effect until 200 AM CDT for west
central Minnesota.
LAT...LON 4576 9625 4602 9627 4602 9658 4626 9694
4638 9768 4658 9749 4647 9621 4611 9576
4576 9576
TIME...MOT...LOC 0050Z 212DEG 37KT 4648 9740 4630 9644 4584 9596
$$
MNC051-111-167-NDC073-077-100130-
/O.CON.KFGF.SV.W.0126.000000T0000Z-211010T0130Z/
Otter Tail MN-Grant MN-Wilkin MN-Ransom ND-Richland ND-
751 PM CDT Sat Oct 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM CDT
FOR SOUTHWESTERN OTTER TAIL...GRANT...WILKIN...EASTERN RANSOM AND
CENTRAL RICHLAND COUNTIES...
At 750 PM CDT, severe thunderstorms were located along a line
extending from near Venlo to near Everdell to near Barrett, moving
northeast at 40 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Everdell, Foxhome, Hoffman, Barrett, Elbow Lake, Carlisle,
Rothsay, Erdahl and Ashby.
This includes the following highways...
Interstate 29 between mile markers 18 and 40.
Interstate 94 in Minnesota between mile markers 40 and 81.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4576 9625 4602 9627 4602 9658 4626 9694
4638 9768 4658 9749 4647 9621 4611 9576
4576 9576
TIME...MOT...LOC 0050Z 212DEG 37KT 4648 9740 4630 9644 4584 9596
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DJRThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 9, 8:06 PM CDT | Severe Thunderstorm Warning | FGF | Clay, Grant, Otter Tail, Wilkin | 41 min |
| Oct 9, 7:13 PM CDT | Areal Flood Advisory | FGF | Sargent | 15 hr |
| Oct 9, 10:07 PM CDT | Areal Flood Advisory | FGF | Barnes, Cass, Ransom, Steele, Traill | 12 hr |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2021Severe Thunderstorm Warnings in North Dakota, 2021Every severe thunderstorm warning in 2021
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.