Alert archive / North Dakota / Tornado Warnings in 2021
Tornado Warning 11, NWS Grand Forks, ND
NWS Grand Forks, ND issued this tornado warning at Aug 22, 2021, 4:25 PM CDT for Benson County, North Dakota. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 22, 2021, 4:25 PM CDT (21:25 UTC)
- Expired
- Aug 22, 2021, 5:00 PM CDT
- In force
- 35 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
County Benson County, ND
The radar
The Minot AFB radar (KMBX), 98 km from the middle of the area, began a volume at 21:25 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.
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 22, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 9.4 hours before the alert went out and 181 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
- 1536 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 311 m²/s²
- 0-3 km storm-relative helicity
- 445 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
461
WFUS53 KFGF 222125
TORFGF
NDC005-222200-
/O.NEW.KFGF.TO.W.0011.210822T2125Z-210822T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Forks ND
425 PM CDT Sun Aug 22 2021
The National Weather Service in Grand Forks has issued a
* Tornado Warning for...
Northwestern Benson County in northeastern North Dakota...
* Until 500 PM CDT.
* At 425 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Esmond, or 40 miles west of Devils Lake, moving
northeast at 50 mph.
HAZARD...Tornado and quarter 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 dangerous storm will be near...
Baker around 435 PM CDT.
Harlow around 440 PM CDT.
York around 445 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Leeds.
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 4814 9985 4837 9961 4837 9925 4834 9920
4829 9920 4796 9972 4804 9985
TIME...MOT...LOC 2125Z 220DEG 42KT 4808 9975
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
CJ2 follow-up statements
679
WWUS53 KFGF 222139
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
439 PM CDT Sun Aug 22 2021
NDC005-222200-
/O.CON.KFGF.TO.W.0011.000000T0000Z-210822T2200Z/
Benson ND-
439 PM CDT Sun Aug 22 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
NORTHWESTERN BENSON COUNTY...
At 439 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Baker, or 33 miles west of Devils Lake, moving
northeast at 50 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Harlow around 440 PM CDT.
York around 445 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Leeds.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4837 9961 4837 9925 4834 9920 4829 9920
4801 9964 4810 9969 4825 9973
TIME...MOT...LOC 2139Z 220DEG 42KT 4821 9959
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
CJ140
WWUS53 KFGF 222151
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
451 PM CDT Sun Aug 22 2021
NDC005-222201-
/O.EXP.KFGF.TO.W.0011.000000T0000Z-210822T2200Z/
Benson ND-
451 PM CDT Sun Aug 22 2021
...THE TORNADO WARNING FOR NORTHWESTERN BENSON COUNTY WILL EXPIRE AT
500 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
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 900 PM CDT for
northeastern North Dakota.
LAT...LON 4837 9961 4837 9925 4834 9920 4829 9920
4801 9964 4810 9969 4825 9973
TIME...MOT...LOC 2151Z 220DEG 42KT 4830 9947
$$
CJThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 10:01 AM CDT | Wind Advisory | FGF | Barnes, Benson, Cass, Cavalier, Eddy, Grand Forks and 11 more | 10 hr |
| Aug 22, 4:19 PM CDT | Severe Thunderstorm Warning | FGF | Benson | 41 min |
| Aug 22, 5:58 PM CDT | Severe Thunderstorm Warning | FGF | Eddy | 47 min |
| Aug 22, 6:37 PM CDT | Severe Thunderstorm Warning | FGF | Eddy, Nelson | 40 min |
| Aug 22, 6:48 PM CDT | Severe Thunderstorm Warning | FGF | Griggs | 57 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.