Alert archive / North Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 9, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 7, 2021, 5:22 PM CDT for Grand Forks County, Steele County, Traill County, North Dakota. It was in force for 38 min. 5 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 7, 2021, 5:22 PM CDT (22:22 UTC)
- Expired
- Jun 7, 2021, 6:00 PM CDT
- In force
- 38 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Grand Forks County, ND, Steele County, ND, Traill County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 14 km from the middle of the area, began a volume at 22:23 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 7, 5:25 PM CDT | HAIL 1 | Hatton, ND | CORRECTS PREVIOUS HAIL REPORT FROM HATTON. QUARTER SIZED HAIL IN HATTON, RELAYED VIA SOCIAL MEDIA. |
| Jun 7, 5:32 PM CDT | HAIL 1 | Reynolds, ND | REPORT POSTED VIA SOCIAL MEDIA. |
| Jun 7, 5:39 PM CDT | HAIL 1 | Hatton, ND | QUARTER SIZED HAIL IN HATTON, RELAYED VIA SOCIAL MEDIA. |
| Jun 7, 5:45 PM CDT | HAIL 1 | 8 Ene Reynolds, ND | |
| Jun 7, 5:49 PM CDT | HAIL 1 | Hatton, ND | MARK EWENS (KNOX) REPORTS QUARTER SIZED HAIL. RELAYED VIA SOCIAL MEDIA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.4 hours before the alert went out and 275 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
- 2578 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 598 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted.
480
WUUS53 KFGF 072222
SVRFGF
NDC035-091-097-072300-
/O.NEW.KFGF.SV.W.0009.210607T2222Z-210607T2300Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
522 PM CDT Mon Jun 7 2021
The National Weather Service in Grand Forks has issued a
* Severe Thunderstorm Warning for...
Southeastern Grand Forks County in northeastern North Dakota...
Northwestern Traill County in southeastern North Dakota...
Northeastern Steele County in southeastern North Dakota...
* Until 600 PM CDT.
* At 522 PM CDT, a severe thunderstorm was located near Hatton, or 23
miles southwest of Grand Forks, moving northeast at 55 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.
* This severe thunderstorm will be near...
Holmes around 530 PM CDT.
Reynolds around 535 PM CDT.
Thompson around 540 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4753 9747 4766 9760 4784 9702 4768 9691
TIME...MOT...LOC 2222Z 240DEG 49KT 4765 9738
HAIL...1.00IN
WIND...60MPH
$$
DJR2 follow-up statements
008
WWUS53 KFGF 072239
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
539 PM CDT Mon Jun 7 2021
NDC091-072249-
/O.CAN.KFGF.SV.W.0009.000000T0000Z-210607T2300Z/
Steele ND-
539 PM CDT Mon Jun 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN STEELE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4757 9731 4772 9738 4784 9702 4768 9691
TIME...MOT...LOC 2239Z 239DEG 47KT 4774 9712
$$
NDC035-097-072300-
/O.CON.KFGF.SV.W.0009.000000T0000Z-210607T2300Z/
Grand Forks ND-Traill ND-
539 PM CDT Mon Jun 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR SOUTHEASTERN GRAND FORKS AND NORTH CENTRAL TRAILL COUNTIES...
At 539 PM CDT, a severe thunderstorm was located over Thompson, or 11
miles south of Grand Forks, moving northeast at 55 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.
This severe storm will be near...
Thompson around 540 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4757 9731 4772 9738 4784 9702 4768 9691
TIME...MOT...LOC 2239Z 239DEG 47KT 4774 9712
HAIL...1.00IN
WIND...60MPH
$$
DJR454
WWUS53 KFGF 072257
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
557 PM CDT Mon Jun 7 2021
NDC035-097-072307-
/O.EXP.KFGF.SV.W.0009.000000T0000Z-210607T2300Z/
Grand Forks ND-Traill ND-
557 PM CDT Mon Jun 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GRAND FORKS AND
NORTH CENTRAL TRAILL COUNTIES WILL EXPIRE AT 600 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
southeastern and northeastern North Dakota.
LAT...LON 4757 9731 4772 9738 4784 9702 4768 9691
TIME...MOT...LOC 2257Z 240DEG 49KT 4786 9681
$$
DJRNearby
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.