A Flash Flood Warning is in effect right now for five Colorado counties: Adams, Las Animas, Larimer, Western Arapahoe, and Douglas. The warning was issued on August 14, 2026 at 3:55 PM MDT and runs through 7:00 PM MDT the same evening. It was issued jointly by the National Weather Service Denver, CO and NWS Pueblo, CO, covering a wide stretch of the Front Range and southeastern Colorado plains.
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If you are in any of these counties and have plans that involve driving, being near a creek, or spending time in a low-lying area, the next three hours are the window that matters. This is not a watch or an advisory. A warning means flash flooding is imminent or already occurring.
What NWS Is Telling Residents to Do Right Now
The core message from the National Weather Service is direct: turn around, don’t drown when encountering flooded roads. This is not a slogan. It reflects a documented pattern: most flood deaths occur in vehicles. A driver who attempts to cross a flooded road, even one that appears shallow, is taking on a risk that has killed people under similar conditions across the country.
According to the official alert, excessive runoff from the current storm will cause flash flooding across small creeks and streams, highways, and underpasses. Country roads and farmlands along creek banks are specifically called out as vulnerable. Low-lying areas of all kinds are subject to flooding during the warning period.
The practical implication is this: if your route includes any of the following, build in a delay or choose an alternate path before 7:00 PM MDT on August 14. Underpasses collect water fast and drain slowly. Country roads near creek banks can be washed out before any visible warning sign appears. Streams that look manageable in the morning can run at dangerous speed and depth within minutes of a storm cell moving overhead.
If you are already on a road and encounter standing or moving water, do not attempt to cross. Back up, find higher ground, and wait. Six inches of moving water can knock a person off their feet. One foot of water can move a small vehicle. Two feet can carry away most SUVs and trucks. The warning is simple precisely because the math is unforgiving.
If you live or work near a creek, stream, or low-lying area within the five affected counties, move away from the waterway now, before conditions deteriorate. Do not wait to see water rising. Flash flooding can arrive faster than most people expect, especially where drainage channels are narrow or culverts are already partially blocked.
Connecting This to Longer-Term Preparedness
Colorado sits in one of the most flash-flood-prone regions of the country, and August is historically one of the most active months for this hazard, driven by monsoon moisture and fast-moving afternoon thunderstorms. Knowing your local flood risk before a warning is issued, keeping your vehicle’s gas tank reasonably full so you can reroute without stopping, and having a battery-powered or hand-crank weather radio available at home are all steps that pay off repeatedly across a season, not just on a single afternoon. The National Weather Service issues these alerts with short lead times because the storms move fast. Preparedness built ahead of the storm is the only kind that works when the warning window is three hours long.
Monitor conditions at weather.gov and through local NWS alerts for any updates or extensions to this warning before 7:00 PM MDT on August 14, 2026.
For the fundamentals that apply beyond this specific alert, see our Flood Preparedness guide.
Source: National Weather Service (NWS Denver CO, NWS Pueblo CO). Active alert data retrieved 2026-08-14 22:01 UTC via api.weather.gov.
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