Alert USA
weather NWS severe Alamosa, CO; Conejos, CO; Costilla, CO November 4, 2026 at 10:44 PM

Flood Warning

Flooding continues along the Conejos and San Antonio Rivers in eastern Conejos County.

* WHAT...Flooding continues along the Conejos River and San Antonio River towards their confluence with the Rio Grande, downstream of Alamosa.

* WHERE...Northeastern Conejos County in south central Colorado... West Central Costilla County in south central Colorado... South Central Alamosa County in southeastern Colorado...

* WHEN...Until 345 PM MST Thursday.

* IMPACTS...Flooding of the Conejos River and San Antonio River, along with other low-lying and flood-prone locations, continues in eastern Conejos County. Inundation of low-lying areas near and downstream of the confluence with the Rio Grande is also expected. Some roads remain closed due to flooding. Expect many areas of slow moving or standing water.

* ADDITIONAL DETAILS... - At 343 PM MST, Flooding has been ongoing in the warned area. - Some locations that will experience flooding include... Manassa, Sanford and Lasauses. - http://www.water.noaa.gov

Flooding in Alamosa, CO; Conejos, CO; Costilla, CO can cut off roads with little warning, damage homes near low-lying areas, and disrupt power and water service. Even a few inches of moving water can carry away a vehicle.

This report is based on information from NWS, monitored by Alert USA's verified emergency feed.

Alert USA anticipates a high chance of travel disruptions, elevated property risk in low-lying areas, and possible power outages while the event is active.

Recommended steps: avoid flooded roads — turn around, don't drown; move to higher ground if you are in a low-lying area; charge phones and prepare for power loss; check on family and neighbors.

Alert USA is tracking this flood event and will update this report as verified information becomes available.

Verified by Alert USA • NWS

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