Alert archive / North Dakota / Tornado Warnings in 2021
Tornado Warning 5, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 9, 2021, 9:20 PM CDT for Grand Forks County, Nelson County, Steele County, North Dakota. It was in force for 40 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
- Aug 9, 2021, 9:20 PM CDT (02:20 UTC)
- Expired
- Aug 9, 2021, 10:00 PM CDT
- In force
- 40 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.75 in
Counties Grand Forks County, ND, Nelson County, ND, Steele County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 40 km from the middle of the area, began a volume at 02:19 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, 9:20 PM CDT | TORNADO 2 | 5 Nne Sharon, ND | A TORNADO TRACKED EASTWARD FOR ROUGHLY 3 MILES FROM FAR NORTHEAST SHARON TOWNSHIP ACROSS FAR NORTHWESTERN WESTFIELD TOWNSHIP TO AROUND 7 NE SHARON BY 928 PM CDT. A TORNADO DEBRIS SIGNATURE WAS EVIDENT ON KMVX RADAR. THE TORNADO COMPLETELY DISMANTLED AND DESTRO |
| Aug 9, 9:28 PM CDT | FUNNEL CLOUD | 8 Ne Sharon, ND | A WELL DEVELOPED WALL CLOUD WITH POSSIBLE FUNNEL WAS REPORTED BY A STORM CHASER/STORM SPOTTER. |
| Aug 9, 9:42 PM CDT | TORNADO 1 | 5 Wnw Northwood, ND | A FEW COTTONWOOD TREES WERE SNAPPED OR UPROOTED IN A SHELTERBELT BETWEEN ABOUT 942 AND 943 PM CDT. LIKELY A BRIEF TORNADO TOUCHDOWN BASED ON RADAR SIGNATURE. PEAK WINDS ESTIMATED TO 90 MPH. MAXIMUM WIDTH TO 150 YARDS. 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, 2.3 hours before the alert went out and 241 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.
485
WFUS53 KFGF 100220
TORFGF
NDC035-063-091-100300-
/O.NEW.KFGF.TO.W.0005.210810T0220Z-210810T0300Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
920 PM CDT Mon Aug 9 2021
The National Weather Service in Grand Forks has issued a
* Tornado Warning for...
Southwestern Grand Forks County in northeastern North Dakota...
Southeastern Nelson County in northeastern North Dakota...
North central Steele County in southeastern North Dakota...
* Until 1000 PM CDT.
* At 920 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Aneta, or 40 miles west of Grand Forks, moving
east at 15 mph.
HAZARD...Tornado and golf ball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This tornadic thunderstorm will remain over mainly rural areas of
southwestern Grand Forks, southeastern Nelson and north central
Steele Counties.
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 4763 9791 4772 9796 4779 9769 4767 9756
TIME...MOT...LOC 0220Z 256DEG 11KT 4768 9787
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
$$
TG1 follow-up statement
231
WWUS53 KFGF 100229
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
929 PM CDT Mon Aug 9 2021
NDC063-100238-
/O.CAN.KFGF.TO.W.0005.000000T0000Z-210810T0300Z/
Nelson ND-
929 PM CDT Mon Aug 9 2021
...THE TORNADO WARNING FOR SOUTHEASTERN NELSON COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM CDT for
southeastern and northeastern North Dakota.
LAT...LON 4779 9769 4767 9756 4764 9782 4772 9788
4774 9788
TIME...MOT...LOC 0228Z 256DEG 12KT 4769 9781
$$
NDC035-091-100300-
/O.CON.KFGF.TO.W.0005.000000T0000Z-210810T0300Z/
Grand Forks ND-Steele ND-
929 PM CDT Mon Aug 9 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
SOUTHWESTERN GRAND FORKS AND NORTH CENTRAL STEELE COUNTIES...
At 928 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles northeast of Sharon, or 38 miles southwest of
Grand Forks, moving east at 15 mph.
HAZARD...Tornado and golf ball size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
southwestern Grand Forks and north central Steele Counties.
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.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4779 9769 4767 9756 4764 9782 4772 9788
4774 9788
TIME...MOT...LOC 0228Z 256DEG 12KT 4769 9781
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN
$$
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, 8:12 PM CDT | Severe Thunderstorm Warning | FGF | Eddy, Griggs, Nelson | 63 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, 9:42 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
Tornado Warnings in North Dakota, 2021Every tornado warning in 2021Tornadoes 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.