Heating season is back — expect more CO calls and the year's first cold-weather crashes

The hazard this month is the transition itself. As furnaces, boilers and space heaters come back on for the first time since spring, carbon monoxide calls rise — faulty units, blocked flues, generators run too close to a dwelling. Treat a multi-patient call with vague, flu-like complaints in a single structure as CO until a meter says otherwise, and get your meter on before you commit crews inside. Check the specifics against your own service's CO protocol; this piece does not set one.

The first frost and the first freeze matter more than any single cold snap later in the season. Early-season ice forms on bridges, overpasses and shaded curves while the surrounding road is still wet and clear, and it arrives before drivers have reset their habits from summer. Expect a cluster of single-vehicle and loss-of-control crashes on the first morning the temperature drops below freezing overnight. Wet leaves on the roadway do the same thing in daylight.

Daylight is the quieter problem. The clocks and the shortening evenings mean more of your call volume now runs in the dark, which lengthens scene times, raises struck-by risk on the roadway and makes patient assessment harder. Account for it in your lighting and your scene-safety posture, not just your driving.

None of this needs a severe-weather warning to arrive. It arrives with the ordinary first cold morning of the season.

What to do with it this week: pull and check your CO meters and your cold-weather vehicle kit now, before the night you need them. Brief newer members on the first-freeze crash pattern so it is not a surprise. For actual temperatures, timing and any warnings in your area, go to your local weather service — the numbers are regional and this outlook does not carry them.