Flash Flood Warning for Gunnison, Douglas, and San Miguel Counties Through August 22 at 5:45 PM MDT: Where to Move and What Roads to Abandon

A life-threatening Flash Flood Warning is in effect for parts of Colorado's Gunnison, Douglas, and San Miguel counties until 5:45 PM MDT on August 22, 2026, with severe debris flows expected across the Gold Mountain Burn Scar.

Update: This Flash Flood Warning for Gunnison, CO; Douglas, CO; San Miguel, CO expired on August 22, 2026 at 17:45 UTC, according to the National Weather Service. The information below reflects conditions at the time this alert was active — check weather.gov for current alerts in your area.

A Flash Flood Warning is in effect right now for Gunnison, Douglas, and San Miguel counties in Colorado, beginning at 2:49 PM MDT on August 22, 2026, and running through 5:45 PM MDT on August 22, 2026. The warning was issued jointly by the National Weather Service office in Grand Junction, Colorado and NWS Denver. Residents and travelers in the affected areas should treat this as an active, ongoing emergency until the warning expires.

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What Is Happening on the Ground

According to the National Weather Service, this is a life-threatening situation. Heavy rainfall is causing extensive and severe flash flooding of creeks, streams, and ditches within the Gold Mountain Burn Scar. Burn scars are among the most dangerous terrain during heavy rain events: the fire-hardened soil sheds water rapidly rather than absorbing it, accelerating runoff and dramatically increasing the volume and speed of debris flows.

NWS warns that severe debris flows can be anticipated across roads in the area. These are not minor puddles or slow-rising water. Debris flows carry mud, rock, and woody material at speed, and they can arrive with little warning. The agency specifically notes that roads and driveways may be washed away in places, meaning infrastructure you relied on to enter an area may no longer exist when you attempt to leave.

What NWS Is Telling You to Do Right Now

The official NWS instruction is direct: if you encounter flood waters, climb to safety. The agency’s specific direction is to climb to higher ground immediately. This is the primary action. Do not attempt to drive through or walk through any water crossing, particularly within the Gold Mountain Burn Scar zone.

NWS also issues a specific geographic warning: avoid the Cutler and Dexter Creek drainages. These named drainages represent the highest-risk corridors during this event. If you are near either drainage right now, move away from the low-lying areas and get to higher elevation. Do not wait to see how conditions develop. The NWS language makes clear that the flooding is already expected to be extensive and severe, not a possibility that may or may not materialize.

If you are indoors in the affected counties, remain inside and away from creek beds, drainage channels, and low-lying roads. If you are in a vehicle, do not attempt to cross flooded roadways. The phrase “turn around, don’t drown” applies here in its most literal sense: a road that appears passable can conceal washed-out pavement or fast-moving water deep enough to sweep a vehicle downstream.

Why Burn Scar Flooding Deserves Year-Round Attention

The Gold Mountain Burn Scar situation is a reminder that wildfire risk does not end when a fire is contained. Burned landscapes remain hazardous for months and even years afterward, because the loss of vegetation and the hydrophobic soil layer left by intense heat turn normal summer thunderstorms into outsized flood events. Fire accounts for 35 of the 54 federal disaster declarations in the past 60 days, with Washington, Oregon, Utah, and Nevada among the most affected states, according to federal emergency management data. For households anywhere in the western United States, building a preparedness plan that accounts for post-fire flooding, not just the fire itself, is one of the most practical steps a family can take. Knowing your local creek drainages, understanding burn scar maps for your county, and identifying higher-ground routes from your home are actions that apply long after any single warning expires.

Monitor the National Weather Service at weather.gov and your local emergency management agency for updates through the 5:45 PM MDT expiration window on August 22, 2026. Conditions may change before the warning expires.

For the fundamentals that apply beyond this specific alert, see our Flood Preparedness guide.

Source: National Weather Service (NWS Grand Junction CO, NWS Denver CO). Active alert data retrieved 2026-08-22 22:00 UTC via api.weather.gov.

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