WWUS65 KBYZ 232150
WCNBYZ

WATCH COUNTY NOTIFICATION FOR WATCHES 617/620
NATIONAL WEATHER SERVICE BILLINGS MT
350 PM MDT SUN AUG 23 2026

MTC003-011-017-025-065-075-087-103-111-240400-
/O.NEW.KBYZ.SV.A.0620.260823T2150Z-260824T0400Z/

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
620 IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR THE FOLLOWING
AREAS

IN MONTANA THIS WATCH INCLUDES 9 COUNTIES

IN CENTRAL MONTANA

MUSSELSHELL           

IN SOUTH CENTRAL MONTANA

BIG HORN              YELLOWSTONE           

IN SOUTHEAST MONTANA

CARTER                CUSTER                FALLON               
POWDER RIVER          ROSEBUD               TREASURE             

THIS INCLUDES THE CITIES OF ASHLAND, BAKER, BILLINGS, BROADUS, 
COLSTRIP, CROW AGENCY, EKALAKA, FORSYTH, HARDIN, HYSHAM, 
LAME DEER, MILES CITY, AND ROUNDUP.

$$

MTC009-037-067-095-097-107-240100-
/O.CON.KBYZ.SV.A.0617.000000T0000Z-260824T0100Z/

SEVERE THUNDERSTORM WATCH 617 REMAINS VALID UNTIL 7 PM MDT THIS
EVENING FOR THE FOLLOWING AREAS

IN MONTANA THIS WATCH INCLUDES 6 COUNTIES

IN CENTRAL MONTANA

GOLDEN VALLEY         WHEATLAND             

IN SOUTH CENTRAL MONTANA

CARBON                PARK                  STILLWATER           
SWEET GRASS           

THIS INCLUDES THE CITIES OF ABSAROKEE, BIG TIMBER, BRIDGER, 
COLUMBUS, HARLOWTON, JOLIET, LAVINA, LIVINGSTON, RED LODGE, 
AND RYEGATE.

$$