Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 87, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 9, 2021, 8:12 PM CDT for Eddy County, Griggs County, Nelson County, North Dakota. It was in force for 63 min. 6 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, 2021, 8:12 PM CDT (01:12 UTC)
- Expired
- Aug 9, 2021, 9:15 PM CDT
- In force
- 63 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Possible
- Damage threat
- Considerable
- Hail
- 2.5 in
- Wind
- 70.0 mph
Counties Eddy County, ND, Griggs County, ND, Nelson County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 76 km from the middle of the area, began a volume at 01:13 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, 8:26 PM CDT | HAIL 1.75 | Red Willow Lake, ND | GOLF BALL OR LARGER SIZED HAIL. PHOTOS AND REPORTS POSTED VIA SOCIAL MEDIA. |
| Aug 9, 8:27 PM CDT | TSTM WND DMG | 6 Nnw Binford, ND | A FEW LARGE TREE LIMB BROKEN DOWN NEAR RED WILLOW LAKE. |
| Aug 9, 8:28 PM CDT | FUNNEL CLOUD | 3 Wsw Binford, ND | LARGE WALL CLOUD MOVING TOWARD BINFORD WITH A POSSIBLE FUNNEL CLOUD. |
| Aug 9, 8:34 PM CDT | TORNADO 0 | 3 E Binford, ND | A BRIEF TOUCHDOWN WAS NOTED AND RECORDED ON VIDEO BETWEEN 834 AND 835 PM CDT. THE TOUCHDOWN OCCURRED OVER AN OPEN FIELD AS THE STORM BECAME QUICKLY RAIN WRAPPED AND ADDITIONAL BRIEF TOUCHDOWNS MAY HAVE OCCURRED LATER IN THE EAST-NORTHEASTWARD PATH. PEAK WINDS |
| Aug 9, 8:35 PM CDT | HAIL 2.5 | 1 Ne Binford, ND | PHOTO AND REPORT POSTED VIA SOCIAL MEDIA. VIDEO AND TIME SENT SEPARATELY. THIS CORRECTS A PREVIOUS REPORT WITH AN INCORRECT TIME OF 650 PM CDT |
| Aug 9, 8:35 PM CDT | HAIL 2.75 | 7 N Binford, ND | PHOTO AND REPORT POSTED VIA SOCIAL MEDIA. HAIL WAS LARGER THAN THE DIAMETER OF A SODA CAN. TIME ESTIMATED BASED ON RADAR. |
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, 4:01 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.2 hours before the alert went out and 203 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
- 296 J/kg
- Mixed-layer CIN
- -462 J/kg
- Mixed-layer LCL
- 1238 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
541
WUUS53 KFGF 100112
SVRFGF
NDC027-039-063-100215-
/O.NEW.KFGF.SV.W.0087.210810T0112Z-210810T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
812 PM CDT Mon Aug 9 2021
The National Weather Service in Grand Forks has issued a
* Severe Thunderstorm Warning for...
Southern Nelson County in northeastern North Dakota...
Northern Griggs County in southeastern North Dakota...
Southeastern Eddy County in northeastern North Dakota...
* Until 915 PM CDT.
* At 811 PM CDT, a severe thunderstorm was located near Mchenry, or
36 miles southeast of Devils Lake, moving northeast at 30 mph.
HAZARD...Tennis ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
* This severe thunderstorm will be near...
Mose around 815 PM CDT.
Red Willow Lake around 825 PM CDT.
Other locations in the path of this severe thunderstorm include
McVille and Kloten.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows!
This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter such as an interior room, a
bathroom, closet or basement.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 4766 9875 4788 9788 4767 9789 4767 9799
4751 9799 4749 9850 4759 9850 4759 9872
TIME...MOT...LOC 0111Z 238DEG 25KT 4763 9854
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
CJ2 follow-up statements
091
WWUS53 KFGF 100143
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
843 PM CDT Mon Aug 9 2021
NDC027-100152-
/O.CAN.KFGF.SV.W.0087.000000T0000Z-210810T0215Z/
Eddy ND-
843 PM CDT Mon Aug 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN EDDY COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern and northeastern North Dakota.
LAT...LON 4788 9788 4767 9789 4767 9799 4751 9799
4749 9850 4759 9850 4777 9830
TIME...MOT...LOC 0142Z 238DEG 25KT 4775 9827
$$
NDC039-063-100215-
/O.CON.KFGF.SV.W.0087.000000T0000Z-210810T0215Z/
Nelson ND-Griggs ND-
843 PM CDT Mon Aug 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN NELSON AND NORTHERN GRIGGS COUNTIES...
At 842 PM CDT, a severe thunderstorm was located near McVille, or 37
miles southeast of Devils Lake, moving northeast at 30 mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
Locations impacted include...
McVille and Kloten.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter, such as an interior room,
a bathroom or closet or basement.
&&
LAT...LON 4788 9788 4767 9789 4767 9799 4751 9799
4749 9850 4759 9850 4777 9830
TIME...MOT...LOC 0142Z 238DEG 25KT 4775 9827
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
CJ947
WWUS53 KFGF 100201
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
901 PM CDT Mon Aug 9 2021
NDC039-063-100215-
/O.CON.KFGF.SV.W.0087.000000T0000Z-210810T0215Z/
Nelson ND-Griggs ND-
901 PM CDT Mon Aug 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR SOUTHEASTERN NELSON AND NORTHEASTERN GRIGGS COUNTIES...
At 900 PM CDT, a severe thunderstorm was located over Kloten, or 44
miles southeast of Devils Lake, moving east at 25 mph.
HAZARD...Golf ball size hail and 70 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
considerable tree damage. Wind damage is also likely to
mobile homes, roofs, and outbuildings.
Locations impacted include...
McVille, Aneta, Kloten and Jessie.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and deadly cloud to ground
lightning. Seek shelter inside a well-built structure. Stay away from
windows.
This thunderstorm is capable of producing all types of severe weather
including extremely large hail, destructive straight line winds and
tornadoes. Move quickly to a safe shelter, such as an interior room,
a bathroom or closet or basement.
&&
LAT...LON 4788 9788 4767 9789 4767 9799 4756 9799
4752 9831 4766 9832 4779 9819
TIME...MOT...LOC 0200Z 255DEG 22KT 4771 9812
TORNADO...POSSIBLE
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH
$$
TGThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:04 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Ramsey, Towner | 56 min |
| Aug 9, 7:11 PM CDT | Tornado Warning | FGF | Cavalier, Ramsey, Towner | 34 min |
| Aug 9, 7:29 PM CDT | Severe Thunderstorm Warning | FGF | Eddy, Griggs, Nelson | 46 min |
| Aug 9, 7:57 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina, Ramsey, Walsh | 63 min |
| Aug 9, 8:08 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Nelson | 27 min |
| Aug 9, 8:28 PM CDT | Tornado Warning | FGF | Griggs, Nelson | 32 min |
| Aug 9, 8:52 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina | 38 min |
| Aug 9, 9:09 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Griggs, Nelson, Steele | 66 min |
| Aug 9, 9:20 PM CDT | Tornado Warning | FGF | Grand Forks, Nelson, Steele | 40 min |
| Aug 9, 9:42 PM CDT | Tornado Warning | FGF | Grand Forks | 48 min |
| Aug 9, 9:54 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele | 66 min |
| Aug 9, 10:08 PM CDT | Special Weather Statement | FGF | Pembina | 52 min |
| Aug 9, 10:30 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Steele, Traill | 30 min |
| Aug 9, 10:42 PM CDT | Severe Thunderstorm Warning | FGF | Grand Forks, Traill | 63 min |
Nearby
Severe 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.