In general, the possibility of fog developing is when the dewpoint spread is less then 5 degrees F.
On Tuesday, August 31, 2021 at 6:02:58 PM UTC-4 [email protected] wrote: > * On 2021 31 Aug 14:35 -0500, František Slimařík wrote: > > > > Hi all, > > > > I got question for hardcore meteorologists here. Is it possible to > detect > > fog based on classic meassured values like temperature, humidity, > preasure, > > etc? > > Logically I would say fog appears when dew point equals current > > temeperature but I guess it will not be so easy. Fogs didn't appear here > > this year in my locality so I am waiting for autumn to start with > > observations. > > I'm certainly no meteorologist! > > It seems we've had more foggy mornings this summer than in years past. > Humidity has certainly been high with only a handful of stretches with > more than a day below 50% relative humidity. > > Many times it seems as though warm air over cooler moist ground is > necessary for its formation. I don't think this is a temperature > inversion, as such, but they also seem to sometimes be quite localized > and are related to some interesting effects. > > I along with other radio amateurs and possibly Greg find the effects of > these weather phenomena on VHF and UHF radio propagation interesting. > > - Nate > > -- > "The optimist proclaims that we live in the best of all > possible worlds. The pessimist fears this is true." > Web: https://www.n0nb.us > Projects: https://github.com/N0NB > GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819 > > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/9220d1ae-4b82-4b85-998b-e331388b9b93n%40googlegroups.com.
