522 
WUUS55 KBYZ 290129
SVRBYZ
MTC065-290215-
/O.NEW.KBYZ.SV.W.0199.250729T0129Z-250729T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Billings MT
729 PM MDT Mon Jul 28 2025

The National Weather Service in Billings has issued a

* Severe Thunderstorm Warning for...
  Central Musselshell County in central Montana...

* Until 815 PM MDT.

* At 729 PM MDT, a severe thunderstorm was located near Roundup, 
  moving southeast at 30 mph.

  HAZARD...Golf ball size hail and 60 mph wind gusts.

  SOURCE...Trained spotters reported golf ball sized hail 5WNW of
           Roundup.

  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...
  Roundup, Musselshell and Klein.

Very heavy rain and drifts of hail are being reported near Roundup 
and may cause localized flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Anyone outdoors should move to shelter inside a well-built structure 
and stay away from windows. This storm has produced dangerous hail 
and is capable of producing damaging winds.

Torrential rainfall is also occurring with this storm and may lead 
to flash flooding. Do not drive your vehicle through flooded 
roadways.

&&

LAT...LON 4632 10883 4660 10853 4653 10780 4650 10778
      4640 10778 4639 10793 4635 10797 4634 10801
      4626 10803 4626 10832 4625 10832 4624 10840
      4613 10840 4613 10854
TIME...MOT...LOC 0128Z 285DEG 25KT 4645 10843

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...OBSERVED
MAX HAIL SIZE...1.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

TC/WMR

096 
WWUS55 KBYZ 290155
SVSBYZ

Severe Weather Statement
National Weather Service Billings MT
755 PM MDT Mon Jul 28 2025

MTC065-290215-
/O.CON.KBYZ.SV.W.0199.000000T0000Z-250729T0215Z/
Musselshell MT-
755 PM MDT Mon Jul 28 2025

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM MDT 
FOR CENTRAL MUSSELSHELL COUNTY...

At 755 PM MDT, Severe thunderstorms were located along a line from 
20 miles east of Roundup to 7 miles south of Roundup, moving east at 
25 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...
  Roundup, Musselshell and Klein.

Very heavy rain and drifts of hail are being reported near Roundup 
and may cause localized flooding.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Seek shelter inside a well-built structure and stay away from 
windows. These storms are capable of producing damaging winds and 
large hail.

Torrential rainfall is also occurring with these storms and may lead 
to flash flooding. Do not drive your vehicle through flooded 
roadways.

&&

LAT...LON 4633 10871 4660 10853 4653 10780 4650 10780
      4650 10778 4640 10778 4639 10793 4637 10795
      4637 10797 4635 10797 4634 10801 4631 10802
      4631 10803 4626 10803 4626 10832 4625 10832
      4624 10840
TIME...MOT...LOC 0129Z 263DEG 21KT 4651 10834 4633 10874

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BT/WMR

768 
WWUS55 KBYZ 290213
SVSBYZ

Severe Weather Statement
National Weather Service Billings MT
813 PM MDT Mon Jul 28 2025

MTC065-290223-
/O.CAN.KBYZ.SV.W.0199.000000T0000Z-250729T0215Z/
Musselshell MT-
813 PM MDT Mon Jul 28 2025

...SEVERE THUNDERSTORM WARNING IS CANCELLED FOR CENTRAL MUSSELSHELL 
COUNTY...

The storms which prompted the warning have weakened below severe 
limits, and no longer pose an immediate threat to life or property. 
Therefore, the warning has been cancelled. However, small hail, 
gusty winds, and very heavy rain are still likely with these 
thunderstorms.

To report severe weather, contact your nearest law enforcement 
agency. They will send your report to the National Weather Service 
office.

&&

LAT...LON 4633 10871 4660 10853 4653 10780 4650 10780
      4650 10778 4640 10778 4639 10793 4637 10795
      4637 10797 4635 10797 4634 10801 4631 10802
      4631 10803 4626 10803 4626 10832 4625 10832
      4624 10840
TIME...MOT...LOC 0155Z 263DEG 21KT 4653 10811 4635 10852

$$

Chambers