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Home Return to list Severe Thunderstorm Warning 0116 Issued by the Glasgow Forecast Office
Action: New Issued At: 2026-08-12 19:19:30
264
WUUS55 KGGW 130019
SVRGGW
MTC021-055-079-130115-
/O.NEW.KGGW.SV.W.0116.260813T0019Z-260813T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Glasgow MT
619 PM MDT Wed Aug 12 2026
The National Weather Service in Glasgow has issued a
* Severe Thunderstorm Warning for...
Southeastern McCone County in northeastern Montana...
Western Prairie County in northeastern Montana...
Southwestern Dawson County in northeastern Montana...
* Until 715 PM MDT.
* At 618 PM MDT, a severe thunderstorm was located 12 miles southeast
of Brockway, or 18 miles south of Circle, moving southeast at 30
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Terry, Fallon, Lindsay, Zero, Calypso, Crow Rock, and Mccloud.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4666 10557 4674 10558 4675 10562 4683 10562
4683 10581 4687 10583 4687 10607 4705 10608
4744 10535 4704 10478 4672 10534 4666 10549
TIME...MOT...LOC 0018Z 310DEG 27KT 4715 10561
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Stoinski
Action: Cancelled Issued At: 2026-08-12 19:56:01
286
WWUS55 KGGW 130055
SVSGGW
Severe Weather Statement
National Weather Service Glasgow MT
655 PM MDT Wed Aug 12 2026
MTC055-130105-
/O.CAN.KGGW.SV.W.0116.000000T0000Z-260813T0115Z/
McCone MT-
655 PM MDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MCCONE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
&&
LAT...LON 4666 10557 4674 10558 4675 10562 4683 10562
4683 10581 4687 10583 4688 10583 4693 10584
4728 10512 4704 10478 4672 10534 4666 10549
TIME...MOT...LOC 0055Z 310DEG 27KT 4697 10530
$$
MTC021-079-130115-
/O.CON.KGGW.SV.W.0116.000000T0000Z-260813T0115Z/
Prairie MT-Dawson MT-
655 PM MDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM MDT
FOR CENTRAL PRAIRIE AND SOUTHWESTERN DAWSON COUNTIES...
At 655 PM MDT, a severe thunderstorm was located 12 miles north of
Terry, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Terry, Fallon, Lindsay, Zero, Mccloud, and Calypso.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4666 10557 4674 10558 4675 10562 4683 10562
4683 10581 4687 10583 4688 10583 4693 10584
4728 10512 4704 10478 4672 10534 4666 10549
TIME...MOT...LOC 0055Z 310DEG 27KT 4697 10530
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Stoinski
Action: Continued Issued At: 2026-08-12 19:56:01
286
WWUS55 KGGW 130055
SVSGGW
Severe Weather Statement
National Weather Service Glasgow MT
655 PM MDT Wed Aug 12 2026
MTC055-130105-
/O.CAN.KGGW.SV.W.0116.000000T0000Z-260813T0115Z/
McCone MT-
655 PM MDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MCCONE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
Therefore, the warning has been cancelled.
&&
LAT...LON 4666 10557 4674 10558 4675 10562 4683 10562
4683 10581 4687 10583 4688 10583 4693 10584
4728 10512 4704 10478 4672 10534 4666 10549
TIME...MOT...LOC 0055Z 310DEG 27KT 4697 10530
$$
MTC021-079-130115-
/O.CON.KGGW.SV.W.0116.000000T0000Z-260813T0115Z/
Prairie MT-Dawson MT-
655 PM MDT Wed Aug 12 2026
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM MDT
FOR CENTRAL PRAIRIE AND SOUTHWESTERN DAWSON COUNTIES...
At 655 PM MDT, a severe thunderstorm was located 12 miles north of
Terry, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Terry, Fallon, Lindsay, Zero, Mccloud, and Calypso.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4666 10557 4674 10558 4675 10562 4683 10562
4683 10581 4687 10583 4688 10583 4693 10584
4728 10512 4704 10478 4672 10534 4666 10549
TIME...MOT...LOC 0055Z 310DEG 27KT 4697 10530
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Stoinski
Action: Expired Issued At: 2026-08-12 20:18:32
996
WWUS55 KGGW 130118
SVSGGW
Severe Weather Statement
National Weather Service Glasgow MT
718 PM MDT Wed Aug 12 2026
MTC021-079-130127-
/O.EXP.KGGW.SV.W.0116.000000T0000Z-260813T0115Z/
Prairie MT-Dawson MT-
718 PM MDT Wed Aug 12 2026
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL PRAIRIE AND
SOUTHWESTERN DAWSON COUNTIES HAS EXPIRED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been allowed to expire.
&&
LAT...LON 4666 10557 4674 10558 4675 10562 4683 10562
4683 10581 4687 10583 4688 10583 4693 10584
4728 10512 4704 10478 4672 10534 4666 10549
TIME...MOT...LOC 0117Z 310DEG 27KT 4688 10514
$$
Stoinski
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