Yesterday I flew out of EGKK. AS6 METAR indicated freezing fog, 1/8 SM visibility. Actually, I could see more than 1/8 miles ahead, but that's probably an FS9 limitation.Anyhow, I took off. It took me a climb to FL 100 to clear the fog. Now that's not realistic. There's currently a deep high pressure system over the UK. With clear skies, no wind and cold air, radiation fog has formed. Now this fog is normally no more than a thousand or two feet thick. I know this because I was a meteorologist in the army. A ten thousand feet thick fog is not possible, unless, there's another deep cloud layer just above the fog. But this is not the case since there are no convective or frontal conditions to produce such a massive cloud.I'm wondering why AS6 would create such a fog that extends so high.Eytan OrnsteinNobleair EGKK VA.

Hi,Thanks for writing.It's still the visibility issue in FS04. The 1/8 visibility layer extends from the ground to 10K feet. There is nothing we or anyone else can do about this! It is no different if the visibility was 1, 5, 7 or 8, it would still extend to 10K.Thanks,Jimhttp://www.hifisim.com/Active Sky V6 Development Team Active Sky V6 Proud SupporterHiFi Beta TeamRadar Contact Supporter: http://www.jdtllc.com/AirSource Member: http://www.air-source.us/FSEconomy Member:http://www.fseconomy.com/

Thanks for clearing this point. I'm wondering whether one way around the fs limitation is to produce a cloud layer instead of fog.In other words, 'fog' would be 'perceived as a cloud that sits smack on the ground, and would have a normal thickness of 2-3000 feet.Eytan

Hi,It's not so much the fog code, but the way FS handles the visibility values. Many of us have been around and around with this and there are no work-arounds or fixes!Happy Holidays,Jimhttp://www.hifisim.com/Active Sky V6 Development Team Active Sky V6 Proud SupporterHiFi Beta TeamRadar Contact Supporter: http://www.jdtllc.com/AirSource Member: http://www.air-source.us/FSEconomy Member:http://www.fseconomy.com/

Actually to clarify, what we have now is the best we could come up with. The 10K point is where the graduation effect allows vis to come up beyond 10SM but also comes with a hard shift in graphical depiction of such vis. We put it up there to prevent hard shifts when climbing at lower altitudes (which isn't ideal for numerous reasons). However, when a significant (ceiling) cloud layer exists at a lower altitude, we'll use roughly the top of that layer as the altitude to "shoot" for the 10SM vis clearing so the transition is much more realistic.Right now we feel ASv6.5 has the best all-around representation given the limitations but we are indeed continuing (as always) to try new approaches...Also, you may want to experiment with the graduation enable option, as well as "depict fs9 haze layer" option to try some alternative handling of all this. Best,