00:00tis the season for fog yeah when we talk about fall we often can find foggy mornings to start
00:10the days so what do we mean by all this well there are three types of fog what makes fall so foggy
00:16two of the types of fog first up we have advection type fog which is actually most commonly occurring
00:23in spring it's when you have cold ground potentially even snow covered ground and you
00:28have a warm moist air mass that moves over top of it gets cooled enough to create fog at the surface
00:32the other two that we have radiation radiation fog that occurs very commonly in fall and even
00:39evaporation fog let's first talk about radiational fog because this one is due to the loss of heat
00:46during the overnight hours so once we set that sun to bed all of a sudden the ground starts to cool
00:52and there's usually a moist layer of air that gets trapped near the surface underneath a dryer
00:57layer of air and as that moist layer of air produces more moisture and cools then because
01:04it's lost its heat source the ground that is now cooling as well we can develop a lot of fog right
01:11there chilling that moisture enough to create the fog that we see the other type of fog that we can get
01:17this time of year usually occurs near bodies of water that are still relatively warm it could be
01:22rivers or it could be also lakes and different types of streams you have that warm water temperature
01:28compared to the air and of course that's going to put moisture into the air above it it also is going to
01:33help to warm some of that air just above the surface so it can hold more moisture in the air and as that
01:40continues to then cool you can see this steam or vapor like fog that occurs as you get near bodies of
01:46water do remember that if you are trying to travel through fog make sure to turn on your headlights
01:51and be safe don't just pull on the side of the road find an off-ramp
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