Flash Flood Warning for San Miguel and Grant Counties, NM Through August 28 at 5 PM MDT: How to Stay Safe Near the Hermits Peak Burn Scar

A Flash Flood Warning is in effect for San Miguel County and Grant County, New Mexico, from 3:05 PM MDT on August 28, 2026, through 5:00 PM MDT the same day. The warning was issued jointly by the National Weather Service office in Albuquerque, New Mexico, and NWS El Paso, Texas/Santa Teresa, New Mexico. Conditions in and around the Hermits Peak and Calf Canyon Burn Scar are classified as life-threatening, and anyone in the affected areas should treat this window of time as an active emergency until the warning expires.

What NWS Is Telling You to Do Right Now

The official alert language from the National Weather Service leaves little room for interpretation: this is a life-threatening situation. Heavy rainfall is causing extensive and severe flash flooding along creeks, streams, and ditches within the Hermits Peak and Calf Canyon Burn Scar. That designation matters because burn scars dramatically reduce the ground’s ability to absorb water. Soil that was once held together by root systems is now loose, unstable, and highly vulnerable to rapid runoff and debris movement.

NWS warns that severe debris flows, which carry fast-moving mixtures of water, mud, rock, and debris, can be anticipated across roads in the affected area. The alert also states that roads and driveways may be washed away entirely in some locations, not just flooded but physically destroyed at the surface level.

The single most direct instruction in the alert is this: if you encounter flood waters, climb to safety. That means moving immediately to higher ground on foot if you are near a creek, drainage, or roadway that is beginning to flood. Do not attempt to cross flowing water in a vehicle. Do not wait to assess whether the water looks passable. Burn scar flooding can surge with almost no warning, and debris flows can move faster than a person can run on flat ground.

If you are currently driving in San Miguel or Grant County and you approach water covering a road, stop, turn around, and find an alternate route. If you are at home near a drainage or arroyo within the burn scar perimeter, monitor your immediate surroundings and be prepared to move to the highest point of your structure or to higher ground nearby. The warning expires at 5:00 PM MDT on August 28, but conditions can remain dangerous even after a warning is lifted if runoff continues downstream.

Why Burn Scars Change the Flood Equation

The Hermits Peak and Calf Canyon Fire burned a large swath of northeastern New Mexico in 2022, and burn scars from that event continue to funnel water in ways that pre-fire residents and visitors may not expect. Normal monsoon rainfall that would have soaked into forested ground now sheets off rapidly, concentrating into channels and triggering debris flows at rainfall rates that would not have caused serious flooding before the fire. This is a pattern seen across fire-affected terrain in the Southwest and is a core reason disaster preparedness in fire-impacted communities must account for elevated flood risk for years after a fire is contained. If you live in or frequently travel through burn scar areas during monsoon season, keeping a go-bag accessible, knowing the elevation of your property relative to nearby drainages, and identifying multiple exit routes are practical steps that apply well beyond any single warning event. USRiskRadar tracks both fire and flood risk as connected, long-term hazards, and the situation in San Miguel and Grant Counties on August 28, 2026, is a clear example of why both matter together.

Source: National Weather Service Albuquerque NM and NWS El Paso Tx/Santa Teresa NM. Monitor official NWS alerts at weather.gov for updates as conditions change.

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

Source: National Weather Service (NWS Albuquerque NM, NWS El Paso Tx/Santa Teresa NM). Active alert data retrieved 2026-08-28 22:01 UTC via api.weather.gov.