Winter Storm Warning for Gallatin and Madison County Mountains
This alert is no longer in effect.
NOAA issued it on April 15, 2026, 4 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
A Winter Storm Warning has been issued by NWS Great Falls MT for Gallatin and Madison County Mountains and Centennial Mountains, with heavy snow and high winds expected from 6 PM Wednesday to midnight Thursday.
Read this weather record in 30 seconds
- Record type
- Winter Storm Warning
- Affected area
- Gallatin and Madison County Mountains and Centennial Mountains
- Issued
- April 15, 2026
- Issuing authority
- NWS Great Falls MT
Storm notices can cover different combinations of wind, hail, lightning, and rainfall. Use the original notice for the hazards and boundaries attached to this specific record.
Record status: historical. It was issued 4 months ago; use the issuing agency's live warning service for current conditions in Gallatin and Madison County Mountains and Centennial Mountains.
Alert Details
A Winter Storm Warning has been issued by the National Weather Service (NWS) Great Falls MT. This alert is effective starting from April 15, 2026, at 2:20 PM MDT.
Affected Areas
The warning affects Gallatin and Madison County Mountains and Centennial Mountains in Montana, specifically the zones identified as MTZ330.
What You Should Do
If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Check the latest road conditions by calling 511 or visiting the MDT Road Report website. Prepare for dangerous conditions if in the backcountry.
Expected Conditions
Heavy snow is expected, with total accumulations between 5 and 10 inches at lower elevations and mountain passes, and 10 to 15 inches in the mountains. Winds are forecasted to gust as high as 50 mph, potentially reducing visibility due to falling and blowing snow.
Timeline
The warning is effective from 6 PM MDT on April 15, 2026, and will remain in effect until midnight MDT on April 17, 2026. The onset is at 6 PM MDT on April 15, with expiration at 6:15 AM MDT on April 16.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,115 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to April 15, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.