Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 5, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 6, 2021, 1:55 AM CDT for 5 counties in North Dakota. It was in force for 65 min. 10 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
- Jun 6, 2021, 1:55 AM CDT (06:55 UTC)
- Expired
- Jun 6, 2021, 3:00 AM CDT
- In force
- 65 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Benson County, ND, Cavalier County, ND, Eddy County, ND, Ramsey County, ND, Towner County, ND
The radar
The Minot AFB radar (KMBX), 112 km from the middle of the area, began a volume at 06:59 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 6, 2:05 AM CDT | TSTM WND GST 51 | Baker, ND | NDAWN STATION MEASUREMENT. |
| Jun 6, 2:15 AM CDT | TSTM WND GST 58 | 2 N Maddock, ND | NDAWN. |
| Jun 6, 2:18 AM CDT | TSTM WND GST 66 | 2 N Maddock, ND | VIA NDAWN. |
| Jun 6, 2:20 AM CDT | TSTM WND GST 65 | Minnewaukan, ND | A LARGE EVERGREEN WAS UPROOTED. |
| Jun 6, 2:20 AM CDT | TSTM WND GST 65 | Minnewaukan, ND | CORRECTS PREVIOUS TSTM WND GST REPORT FROM MINNEWAUKAN. A LARGE EVERGREEN WAS UPROOTED. |
| Jun 6, 2:35 AM CDT | TSTM WND DMG | 5 Sw Webster, ND | 6 INCH DIAMETER TREES WERE BLOWN DOWN, AN AWNING WAS BROKEN OFF A CAMPER, AND A WINDSHIELD WAS DAMAGED AT DRY LAKE CAMPGROUND. |
| Jun 6, 2:35 AM CDT | TSTM WND GST 67 | 1 Wsw Cando, ND | AWOS STATION K9D7 CANDO AP ND. |
| Jun 6, 2:38 AM CDT | TSTM WND GST 78 | Leeds, ND | REPORT BY ND DOT SENSOR. |
| Jun 6, 2:44 AM CDT | TSTM WND GST 66 | 2 W Devils Lake, ND | AWOS STATION KDVL DEVILS LAKE AP ND. |
| Jun 6, 2:55 AM CDT | TSTM WND GST 61 | 1 Sw Devils Lake, ND | MESONET STATION DW5459 DEVILS LAKE ND. |
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 6, 1:39 AM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 6.9 hours before the alert went out and 170 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
- 1639 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 3032 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 11 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted.
393
WUUS53 KFGF 060655
SVRFGF
NDC005-019-027-071-095-060800-
/O.NEW.KFGF.SV.W.0005.210606T0655Z-210606T0800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
155 AM CDT Sun Jun 6 2021
The National Weather Service in Grand Forks has issued a
* Severe Thunderstorm Warning for...
Benson County in northeastern North Dakota...
Southern Towner County in northeastern North Dakota...
Southwestern Cavalier County in northeastern North Dakota...
Western Ramsey County in northeastern North Dakota...
Eddy County in northeastern North Dakota...
* Until 300 AM CDT.
* At 155 AM CDT, severe thunderstorms were located along a line
extending from near Shell Valley to Hurdsfield, moving east at 40
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Brantford, New Rockford, Devils Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
&&
LAT...LON 4837 9985 4837 9949 4855 9949 4861 9884
4759 9875 4759 9926 4767 9927 4768 9930
4785 9930 4785 9981 4802 9981 4802 9985
TIME...MOT...LOC 0655Z 257DEG 37KT 4884 9992 4743 9990
HAIL...1.00IN
WIND...60MPH
$$
CJ1 follow-up statement
598
WWUS53 KFGF 060744
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
244 AM CDT Sun Jun 6 2021
NDC005-019-027-071-095-060800-
/O.CON.KFGF.SV.W.0005.000000T0000Z-210606T0800Z/
Benson ND-Towner ND-Cavalier ND-Ramsey ND-Eddy ND-
244 AM CDT Sun Jun 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT
FOR CENTRAL BENSON...SOUTHERN TOWNER...SOUTHWESTERN CAVALIER...
WESTERN RAMSEY AND EDDY COUNTIES...
At 242 AM CDT, severe thunderstorms were located along a line
extending from 7 miles east of Hansboro to near Barlow, moving east
at 45 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...At 2:18 AM CDT, 65 mph wind gust was reported at 2 N
Maddock at the NDAWN Mesonet.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Devils Lake, New Rockford, Cando, Camp Grafton, Lakewood Park, Leeds
and Fort Totten.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with these storms will occur before any rain or
lightning. Do not wait for the sound of thunder before taking cover.
SEEK SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
&&
LAT...LON 4837 9949 4855 9949 4861 9884 4759 9875
4759 9926 4767 9927 4768 9930 4785 9930
TIME...MOT...LOC 0742Z 257DEG 37KT 4895 9920 4754 9920
HAIL...1.00IN
WIND...60MPH
$$
CJThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 5, 7:24 PM CDT | Special Weather Statement | FGF | Pembina | 66 min |
| Jun 5, 7:47 PM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina | 58 min |
| Jun 5, 8:44 PM CDT | Severe Thunderstorm Warning | FGF | Pembina | 16 min |
| Jun 6, 1:49 AM CDT | Special Weather Statement | FGF | Benson, Eddy, Towner | 56 min |
| Jun 6, 2:17 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Towner | 43 min |
| Jun 6, 2:39 AM CDT | Severe Thunderstorm Warning | FGF | Benson, Cavalier, Eddy, Grand Forks, Griggs, Nelson and 4 more | 51 min |
| Jun 6, 3:24 AM CDT | Severe Thunderstorm Warning | FGF | Cavalier, Pembina, Walsh | 66 min |
| Jun 6, 4:33 AM CDT | Red Flag Warning | FGF | Barnes, Benson, Cass, Cavalier, Eddy, Grand Forks and 8 more | 16 hr |
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.