Interesting weather images
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This surface temperature map and weather analysis shows the changes that are coming to the Southeast as the next cold front passes. On this map from Chris Robbin’s Facebook page, you can see the cold air behind the advancing cold front, which is just to the west of Mississippi. The remains of the cold…
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NASA sends out a picture of the day on email every day. and today was a beautiful one. Seeing the fall colors from space makes fall feel more real. Here is the caption that goes with the image below: A few days after autumn showed up on the calendar in the Northern Hemisphere, it showed…
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In a previous post I discussed the “wedge,” a weather phenomenon that brings cool air down the east side of the Appalachian Mountains into the Southeast. Officially, it is called a cold air damming event, since the mountains prevent the movement of cool dense air into the mountains but direct it along the eastern slopes. …
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As a meteorologist I am always fascinated by time-lapse videos of clouds moving. They really show that the atmosphere is a fluid not much different than water. This week I ran across two beautiful examples that really capture this. The first one is a video of a sky covered by a cloud type called Undulatus…
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The evaporative stress index is a way of measuring rates of evapotranspiration from plants and the ground using satellite data. The higher the rates of water use, the more negative the evaporative stress index. The two maps below show the maps for September 2 and September 8. You can see that on September 2,…
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Today most of northeast Georgia is experiencing what natives often call “the wedge,” a shallow layer of cold air that moves down into the state along the east side of the Appalachian Mountains. The official description of this phenomenon is “cold air damming” because the mountains act as a natural dam that restricts the flow…
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Atlantic magazine had an interesting entry in their CityLab blog on temperature extremes in the US this week. The article pointed out that in most year, extremes of cold or warm dominate the country as a whole. However, this year there have been a nearly equal number of record hot and cold temperatures due…