Why fog is more common in the fall
Fog can happen at different times of the year, but it's especially common in the fall.
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00:00 As the days get shorter during fall, you may find yourself waking up to more fog each day.
00:06 It's common this time of year due to the cooler air.
00:09 What we see most common is radiation fog or steam fog, either one.
00:14 They form in similar conditions where you have something warm underneath like a body of water or the warmer ground
00:19 and then colder air over top of it.
00:21 And that contrast combined with the moisture causes fog to form right at the ground.
00:25 Rivers and lakes from the Mississippi to New England are some of the spots where you're likely to see fog this time of year.
00:32 It interacts with the water and the moisture that's also a little bit higher in these river valleys.
00:38 The fog will lighten up as we get closer to winter because the ground and water start to cool off.
00:43 You can still get fog in the wintertime.
00:45 It's called advection fog where you have warmer air coming over a cold ground.
00:49 And those often target different regions like the plains and the Great Lakes.
00:54 For AccuWeather, I'm Emmy Victor.