Dense Fog Advisory

URGENT - WEATHER MESSAGE
National Weather Service Great Falls MT
635 AM MDT Thu Jun 12 2025

MTZ313-314-318-121500-
/O.NEW.KTFX.FG.Y.0006.250612T1235Z-250612T1500Z/
Judith Basin County and Judith Gap-Fergus County below 4500ft-
Snowy and Judith Mountains-
Including the following locations: Windham, Raynesford, Geyser,
Lewistown, Stanford, Hobson, Hilger, Benchland, and Moccasin
635 AM MDT Thu Jun 12 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM MDT THIS MORNING...

* WHAT...Visibility as low as one quarter of a mile.

* WHERE...Snowy and Judith Mountains, Fergus County below 4500ft,
  and Judith Basin County and Judith Gap.

* WHEN...Until 9 AM MDT this morning.

* IMPACTS...Low visibility could make driving conditions hazardous.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.

&&

$$

Moldan

Special Weather Statement

Special Weather Statement
National Weather Service Great Falls MT
628 AM MDT Thu Jun 12 2025

MTZ320-321-326-330-121400-
Big Belt, Bridger and Castle Mountains-Meagher County Valleys-
Gallatin Valley-
Gallatin and Madison County Mountains and Centennial Mountains-
Including the cities of Trident, Maudlow, Battle Ridge Pass,
Bozeman Pass, Deep Creek Pass, Martinsdale, Checkerboard,
Ringling, White Sulphur Springs, Bozeman, Gallatin Gateway,
Big Sky, West Yellowstone, Targhee Pass, and Raynolds Pass
628 AM MDT Thu Jun 12 2025

...Reduced Visibilities this Morning...

Patchy fog, locally dense in a few areas, has developed across
portions of Southwest Montana. Some areas that were seeing reduced
visibilities where the US 191 corridor between West Yellowstone
and Bozeman, I-15 from Bozeman Pass to Belgrade, and the US Hwy 89
corridor within Meagher County. Travelers should be prepared for
visibility as low as one quarter of a mile. Slow down, allow extra
spacing between vehicles, and use your low beam headlights when
traveling in areas of reduced visibility.

$$

Moldan

Air Quality Alert

MTC005-019-021-025-033-041-055-071-079-083-085-091-105-
109-121500-

Air Quality Alert
Relayed by National Weather Service Great Falls MT
900 AM MDT Wed Jun 11 2025

...AIR QUALITY ALERT IN EFFECT...

The Montana Department of Environmental Quality has issued an air
quality alert for Blaine, Daniels, Dawson, Fallon, Garfield, Hill,
McCone, Phillips, Prairie, Richland, Roosevelt, Sheridan, Valley, and
Wibaux counties in effect until 9AM 6/12/2025 elevated particulate
levels from wildfire smoke This alert will be updated again at 900am
6/12/2025.

An Air Quality Alert means that particulates have been trending
upwards and that an exceedence of the 24 hour National Ambient Air
Quality Standard (NAAQS) has occurred or may occur in the near
future.

As of 9AM, Particulate levels in Malta and Sidney are Unhealthy

When air quality is Unhealthy... State and local health officials
recommend that people with respiratory or heart disease, the elderly,
and children should avoid prolonged exertion; everyone else should
limit prolonged exertion.

For more information visit the Montana Department of Environmental
Quality at http://todaysair.mtdeq.us

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
219 AM MDT Thu Jun 12 2025

WYZ001>020-022>030-131300-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin-
Owl Creek and Bridger Mountains-Bighorn Mountains West-
Bighorn Mountains Southeast-Northeast Johnson County-
Southeast Johnson County-Teton and Gros Ventre Mountains-
Jackson Hole-Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
219 AM MDT Thu Jun 12 2025

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and tonight.

Showers and thunderstorms possible today, mainly across central and
southern portions of the area. Main hazard is gusty winds, which
could be 40 to 50 mph.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Friday...Strong thunderstorms are possible across northern and
eastern portions of the area, namely around Johnson County. Wind and
hail are the main hazards.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

$$