Alert archive / Minnesota / Severe Thunderstorm Warnings in 2024
Severe Thunderstorm Warning 21, NWS Grand Forks, ND
NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 12, 2024, 4:05 PM CDT for Becker County, Clearwater County, Mahnomen County, Minnesota. It was in force for 55 min. 1 report 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 12, 2024, 4:05 PM CDT (21:05 UTC)
- Expired
- Jun 12, 2024, 5:00 PM CDT
- In force
- 55 min
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Becker County, MN, Clearwater County, MN, Mahnomen County, MN
The radar
The Fargo/Grand Forks radar (KMVX), 136 km from the middle of the area, began a volume at 21:07 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 12, 4:10 PM CDT | HAIL 2 | White Earth, MN | Public reports Golf ball size hail in White Earth MN at 410pm. |
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 12, 3:32 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
International Fa, MN (KINL), launched 12:00Z, 9.1 hours before the alert went out and 234 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
- 35 J/kg
- Mixed-layer CIN
- -130 J/kg
- Mixed-layer LCL
- 1211 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 286 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
581
WUUS53 KFGF 122105
SVRFGF
MNC005-029-087-122200-
/O.NEW.KFGF.SV.W.0021.240612T2105Z-240612T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Forks ND
405 PM CDT Wed Jun 12 2024
The National Weather Service in Grand Forks has issued a
* Severe Thunderstorm Warning for...
Southern Mahnomen County in northwestern Minnesota...
Northern Becker County in northwestern Minnesota...
Southern Clearwater County in northwestern Minnesota...
* Until 500 PM CDT.
* At 405 PM CDT, a severe thunderstorm was located over southwestern
White Earth Nation, or 25 miles north of Detroit Lakes, moving east
at 40 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Mahnomen, Bad Medicine Lake, Waubun, Naytahwaush, Tulaby Lake,
Ogema, and Many Point Lake.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4695 9516 4708 9604 4716 9607 4731 9607
4745 9518
TIME...MOT...LOC 2105Z 269DEG 37KT 4718 9592
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.50 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Perroux1 follow-up statement
032
WWUS53 KFGF 122129
SVSFGF
Severe Weather Statement
National Weather Service Grand Forks ND
429 PM CDT Wed Jun 12 2024
MNC005-029-087-122200-
/O.CON.KFGF.SV.W.0021.000000T0000Z-240612T2200Z/
Mahnomen MN-Becker MN-Clearwater MN-
429 PM CDT Wed Jun 12 2024
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM CDT
FOR SOUTHEASTERN MAHNOMEN...NORTHEASTERN BECKER AND SOUTHERN
CLEARWATER COUNTIES...
At 428 PM CDT, a severe thunderstorm was located over southeastern
White Earth Nation, or 29 miles northeast of Detroit Lakes, moving
east at 45 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Bad Medicine Lake, Naytahwaush, Tulaby Lake, Many Point Lake, Roy
Lake, Long Lost Lake, and Lake Itasca.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is a potentially deadly storm. Seek shelter in an interior room
on the lowest floor of a well-built structure. Abandon vehicles in
search of a more substantial permanent structure. Stay away from
windows.
&&
LAT...LON 4700 9547 4707 9575 4729 9570 4743 9531
4745 9518 4695 9516
TIME...MOT...LOC 2128Z 270DEG 40KT 4718 9552
THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
PerrouxThe office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 4:09 PM CDT | Severe Thunderstorm Warning | FGF | Wilkin | 51 min |
| Jun 12, 4:32 PM CDT | Severe Thunderstorm Warning | FGF | Clearwater, Hubbard | 43 min |
| Jun 12, 4:48 PM CDT | Severe Thunderstorm Warning | FGF | Grant, Otter Tail, Wilkin | 57 min |
| Jun 12, 4:56 PM CDT | Severe Thunderstorm Warning | FGF | Becker, Hubbard | 64 min |
| Jun 12, 5:12 PM CDT | Severe Thunderstorm Warning | FGF | Hubbard | 33 min |
| Jun 12, 6:44 PM CDT | Tornado Warning | FGF | Kittson | 12 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2024Every severe thunderstorm warning in 2024
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.