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Old 16-06-2016, 12:52 PM
cfn
Cloud Free Night Team

cfn is offline
 
Join Date: May 2016
Location: Melbourne
Posts: 218
Lightbulb Identifying Fog

Quote:
Originally Posted by AndrewJ View Post
Near the intersection of Burke/Toorak rds and the Sth Eastern feeway

Andrew
In the map sequences, this morning in NSW over the blue mountains range and central tablelands, you can see cloud areas with defined, sharp edges that do not move with the other cloud layers. It is very likely these are low level fog layers. Blinking between the total cloud map and the low level cloud map reveals the difference (mid and high level layers are empty).

This is further confirmed by the satellite loop aus_vis in the same time period. Here's a loop showing fog this morning in NSW over the range and central tablelands.
The fog can be easily identified as it is fairly stationary in contrast of all other cloud layers. It also dissipates in situ and does not drift dramatically. The shape of the fog is also consistent with the contour of the valleys and topography in the range.



So if you happen to see a 100% cover in your meteogram or total map cloud and it doesn't add up to the sum of all the other layers, then your probability of fog will be increased.
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Last edited by cfn; 16-06-2016 at 05:28 PM.
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