Boulder, CO Warnings, Watches and Advisories

Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Boulder.

Use the Radar Maps link provided to understand the trajectory of a storm.

Winter Weather Advisory issued October 27 at 7:58PM MDT until October 29 at 3:00PM MDT by NWS Pueblo CO

* WHAT...Heavy snow expected. Total snow accumulations between 6 and 14 inches. Winds gusting as high as 50 mph. * WHERE...Eastern San Juan Mountains above 10000 Feet. * WHEN...From 9 PM Monday to 3 PM MDT Tuesday. * IMPACTS...Travel could be very difficult to impossible, especially over Wolf Creek Pass. Strong winds could cause damage to trees and power lines, and could lead to dangerous travel conditions with near zero visibilities.

Red Flag Warning issued October 27 at 7:54PM MDT until October 28 at 6:00PM MDT by NWS Pueblo CO

...A Red Flag Warning remains in effect for Monday from 11 AM to 6 PM MDT for portions of the Southeast Plains of Colorado... * AFFECTED AREA...Fire Weather Zones 226, 227, 228, 229, 230, 232, 233, 235, 236 and 237. * WINDS...Southwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 13 percent. * IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

Winter Weather Advisory issued October 27 at 3:03PM MDT until October 30 at 6:00AM MDT by NWS Grand Junction CO

* WHAT...Snow expected Above 9000 feet. Total snow accumulations between 6 and 12 inches, with locally higher amounts. Winds gusting as high as 45 mph. * WHERE...Southwest San Juan Mountains. * WHEN...From 6 PM Monday to 6 AM MDT Wednesday. * IMPACTS...Travel could be very difficult to impossible. Areas of blowing snow could significantly reduce visibility.