NEW YORK — As snow begins to taper off across Long Island and New York City, emergency officials are warning residents that the 24 hours following a blizzard can bring serious hidden risks.
One of the most dangerous threats during this period is carbon monoxide buildup caused by blocked exterior vents.
Heavy snowfall and drifting snow can bury furnace exhaust pipes, dryer vents and gas appliance outlets, particularly in homes and low-level exterior installations. When vents are partially or fully obstructed, exhaust gases may not escape properly, allowing carbon monoxide to accumulate indoors.
Carbon monoxide is colorless and odorless. Without a functioning detector, it can build unnoticed.
Officials say the risk often increases after the storm ends. As snow settles, shifts or refreezes, vent openings near ground level can become sealed off. Heating systems may continue running continuously as buildings recover from extended cold exposure.
Residents across Long Island and the five boroughs are urged to inspect exterior vents once conditions are safe. Exhaust pipes should be fully visible and completely clear of snow and ice buildup.
Authorities also recommend checking carbon monoxide detectors to ensure they are working and have fresh batteries. Early symptoms of exposure may include headache, dizziness, nausea or confusion.
Emergency officials emphasize that tightly sealed homes and apartments during winter weather can intensify the danger if ventilation is compromised.
The storm may be ending outside — but checking vents now could prevent a life-threatening situation inside.
