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BoardWeather & hazardsHeating season is open — expect CO calls, flue fires and the first hard freeze
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Heating season is open — expect CO calls, flue fires and the first hard freeze

The shift into cold-weather operations is under way across the Northern Hemisphere, and the hazard mix on your calls changes with it.

This is a general seasonal outlook, not a forecast for your area. Pull your local National Weather Service point forecast before each tour; conditions and timing differ by jurisdiction and change fast.

Furnaces, space heaters and wood stoves are coming on now. That means carbon monoxide. Expect more alarm activations and more vague-complaint medical calls — headache, nausea, dizziness, whole households feeling unwell at once — that read as flu until someone thinks to ask about the heat. Treat clustered symptoms in a single dwelling as a CO problem until metered otherwise, and remember the source can be a running vehicle in an attached garage or a generator run indoors during an outage.

Flue and chimney fires rise with the first sustained cold. First use after a dormant summer burns off creosote and bird nests. These start concealed, in the void, and the visible fire is often the least of it.

Early-season freeze and thaw is the road hazard that catches people out. The first frost arrives overnight on bridges, overpasses and shaded curves while the air still reads above freezing, so black ice forms where drivers do not expect it. Wet leaves over that make braking distances worse. Plan for longer response times and more MVC runs on your own apparatus's footing at scene.

Daylight is short and getting shorter. More of your calls now happen in the dark. Scene lighting, high-visibility kit and traffic control matter more than they did a month ago.

Power outages come with early storms. When the grid drops, generator CO and heating-source fires both spike, and oxygen-dependent and dialysis patients lose their support — a known surge for EMS and dispatch.

None of this is new to you. The point is the calendar: the pattern shifts this week, and staffing it is easier when you expect it.

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