Yellowstone National Park, Wyoming
Regional Weather Alerts
| Alert: | Special Weather Statement |
| Area(s): | Musselshell; Northern Big Horn; Southern Big Horn; Southeastern Carbon; Bighorn Canyon; Pryor/Northern Bighorn Mountains; Northeastern Yellowstone; Southwestern Yellowstone |
| Effective: | 2026-07-18 @ 9:19 pm -> 2026-07-18 @ 10:15 pm |
| Onset: | 2026-07-18 @ 9:19 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-18 @ 9:19 pm |
| Headline: | Special Weather Statement issued July 18 at 8:19PM MDT by NWS Billings MT |
| Description: |
At 819 PM MDT, Doppler radar was tracking an area of strong thunderstorms extending from 16 miles north of Shepherd to 7 miles southeast of Pryor, or extending from 21 miles south of Roundup to 32 miles south of Billings, moving east at 30 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Ballantine, Worden, Huntley, Shepherd, Lockwood, Fort Smith, Pryor, Pompeys Pillar, Bighorn Lake, St. Xavier and Crow Indian Reservation. This does NOT include Billings. |
| Alert: | Special Weather Statement |
| Area(s): | Livingston Area; Beartooth Foothills; Northern Sweet Grass |
| Effective: | 2026-07-18 @ 9:08 pm -> 2026-07-18 @ 9:45 pm |
| Onset: | 2026-07-18 @ 9:08 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Billings MT on 2026-07-18 @ 9:08 pm |
| Headline: | Special Weather Statement issued July 18 at 8:08PM MDT by NWS Billings MT |
| Description: |
At 808 PM MDT, Doppler radar was tracking a shower near Livingston, moving east at 35 mph. HAZARD...Wind gusts of 50 to 60 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Livingston, Big Timber, Springdale, Mc Leod and Greycliff. |
| Alert: | Special Weather Statement |
| Area(s): | Hill County; Western and Central Chouteau County; Bears Paw Mountains and Southern Blaine |
| Effective: | 2026-07-18 @ 9:00 pm -> 2026-07-18 @ 9:45 pm |
| Onset: | 2026-07-18 @ 9:00 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-18 @ 9:00 pm |
| Headline: | Special Weather Statement issued July 18 at 8:00PM MDT by NWS Great Falls MT |
| Description: |
At 759 PM MDT, Doppler radar was tracking a strong thunderstorm near Box Elder, or 8 miles north of Big Sandy, moving northeast at 30 mph. HAZARD...Wind gusts up to 40 mph and penny size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Big Sandy, Azure, Parker School, Beaver Creek, Agency, Sangrey, St. Pierre, Boneau, Box Elder, Rocky Boy, and Laredo. |
| Alert: | Special Weather Statement |
| Area(s): | Big Belt, Bridger and Castle Mountains; Meagher County Valleys; Canyon Ferry Area; Gallatin Valley; Gallatin and Madison County Mountains and Centennial Mountains |
| Effective: | 2026-07-18 @ 8:53 pm -> 2026-07-18 @ 10:00 pm |
| Onset: | 2026-07-18 @ 8:53 pm |
| Severity: | Moderate |
| Certainty: | Observed |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-18 @ 8:53 pm |
| Headline: | Special Weather Statement issued July 18 at 7:53PM MDT by NWS Great Falls MT |
| Description: |
At 752 PM MDT, Doppler radar was tracking strong thunderstorms along a line extending from near Townsend to 15 miles south of Bozeman. Movement was east at 35 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Bozeman, Townsend, Belgrade, Manhattan, Toston, Bozeman Hot Springs, Ringling, Gallatin Gateway, Maudlow, Four Corners, Silos, Menard, and Church Hill. |
| Alert: | Flood Advisory |
| Area(s): | Liberty, MT; Pondera, MT; Toole, MT |
| Effective: | 2026-07-18 @ 6:44 pm -> 2026-07-18 @ 9:45 pm |
| Onset: | 2026-07-18 @ 6:44 pm -> 2026-07-18 @ 9:45 pm |
| Severity: | Minor |
| Certainty: | Likely |
| Urgency: | Expected |
| Issued By: | NWS Great Falls MT on 2026-07-18 @ 6:44 pm |
| Headline: | Flood Advisory issued July 18 at 5:44PM MDT until July 18 at 8:45PM MDT by NWS Great Falls MT |
| Description: |
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southwestern Liberty County in north central Montana... Northeastern Pondera County in north central Montana... Southeastern Toole County in north central Montana... * WHEN...Until 845 PM MDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 544 PM MDT, Doppler radar and automated rain gauges indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Up to 1 inch of rain has fallen. - Additional rainfall amounts up to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Conrad, Lothair, Ledger, Devon and Galata. - http://www.weather.gov/safety/flood |
| Alert: | Severe Thunderstorm Watch |
| Area(s): | Blaine, MT; Hill, MT; Liberty, MT |
| Effective: | 2026-07-18 @ 6:37 pm -> 2026-07-18 @ 11:00 pm |
| Onset: | 2026-07-18 @ 6:37 pm -> 2026-07-18 @ 11:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-18 @ 6:37 pm |
| Headline: | Severe Thunderstorm Watch issued July 18 at 5:37PM MDT until July 18 at 10:00PM MDT by NWS Great Falls MT |
| Description: |
THE NATIONAL WEATHER SERVICE HAS EXTENDED SEVERE THUNDERSTORM WATCH 497 TO INCLUDE THE FOLLOWING AREAS UNTIL 10 PM MDT THIS EVENING IN MONTANA THIS WATCH INCLUDES 3 COUNTIES IN NORTH CENTRAL MONTANA BLAINE HILL LIBERTY THIS INCLUDES THE CITIES OF CHESTER, CHINOOK, HARLEM, HAVRE, HAYS, ROCKY BOY, RUDYARD, AND WHITLASH. |
| Alert: | Severe Thunderstorm Watch |
| Area(s): | Broadwater, MT; Cascade, MT; Chouteau, MT; Fergus, MT; Gallatin, MT; Jefferson, MT; Judith Basin, MT; Lewis and Clark, MT; Madison, MT; Meagher, MT; Pondera, MT; Teton, MT |
| Effective: | 2026-07-18 @ 6:37 pm -> 2026-07-18 @ 11:00 pm |
| Onset: | 2026-07-18 @ 6:37 pm -> 2026-07-18 @ 11:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Great Falls MT on 2026-07-18 @ 6:37 pm |
| Headline: | Severe Thunderstorm Watch issued July 18 at 5:37PM MDT until July 18 at 10:00PM MDT by NWS Great Falls MT |
| Description: |
SEVERE THUNDERSTORM WATCH 497 REMAINS VALID UNTIL 10 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 12 COUNTIES IN CENTRAL MONTANA CASCADE FERGUS JUDITH BASIN MEAGHER IN NORTH CENTRAL MONTANA CHOUTEAU PONDERA TETON IN SOUTHWEST MONTANA BROADWATER GALLATIN JEFFERSON MADISON IN WEST CENTRAL MONTANA LEWIS AND CLARK THIS INCLUDES THE CITIES OF AUGUSTA, BATTLE RIDGE PASS, BELT, BIG SANDY, BOULDER, BOULDER HILL, BOZEMAN APT, BOZEMAN PASS, BRADY, BYNUM, CARTER, CASCADE, CHOTEAU, CITY OF BOZEMAN, CONRAD, DEEP CREEK PASS, DUTTON, ELK PARK PASS, ENNIS, FAIRFIELD, FLESHER PASS, FORT BENTON, GRASS RANGE, GREAT FALLS, HEART BUTTE, HELENA, HOBSON, HOMESTAKE PASS, KINGS HILL PASS, LEWISTOWN, LEWISTOWN DIVIDE, LINCOLN, MACDONALD PASS, MARTINSDALE, MONTANA CITY, NORRIS HILL, RAYNESFORD, RAYNOLDS PASS, ROGERS PASS, STANFORD, TARGHEE PASS, TOSTON, TOWNSEND, TWIN BRIDGES, VIRGINIA CITY, WEST YELLOWSTONE, WHITE SULPHUR SPRINGS, WHITEHALL, WINIFRED, AND WINSTON. |
| Alert: | Severe Thunderstorm Watch |
| Area(s): | Park, MT; Sweet Grass, MT; Wheatland, MT |
| Effective: | 2026-07-18 @ 4:46 pm -> 2026-07-18 @ 11:00 pm |
| Onset: | 2026-07-18 @ 4:46 pm -> 2026-07-18 @ 11:00 pm |
| Severity: | Severe |
| Certainty: | Possible |
| Urgency: | Future |
| Issued By: | NWS Billings MT on 2026-07-18 @ 4:46 pm |
| Headline: | Severe Thunderstorm Watch issued July 18 at 3:46PM MDT until July 18 at 10:00PM MDT by NWS Billings MT |
| Description: |
THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 497 IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR THE FOLLOWING AREAS IN MONTANA THIS WATCH INCLUDES 3 COUNTIES IN CENTRAL MONTANA WHEATLAND IN SOUTH CENTRAL MONTANA PARK SWEET GRASS THIS INCLUDES THE CITIES OF BIG TIMBER, HARLOWTON, AND LIVINGSTON. |