Mon Aug 03, 2020 1:16 pm #1788020
Morten wrote:Ibra wrote:This one looks like high altitude convective weather build up not frontal one, you will be flying under their level anyway, so losing sight of the ground is not an issue, but always keep bits of blue sky above and plan the route around them )
Good point. For those who dont know the Gramet site, its well worth getting to know.
From here: https://www.ogimet.com/gramet_aero.phtml.en.
You input the details of your flight- it doesn't recognise small strips, but use the closest large airports - and the flight times offset from the time of the GFS model run used as a base and it will give a graph along these lines:
In this run, I've pretended to fly from Lydd to Plymouth over 72 hours from midday today (ie very slowly...), so this gives a rough idea of the weather on the south coast for the weekend.
You can see that today, it shows some TC in the early evening but with bases around 12k or so, whereas on Sunday, there are likely to be (i) more TCs and (ii) lower down with bases around 3k or so.
It will also give you temperature profiles, wind conditions etc along your route.
It takes a bit of practice to read the location/time but used a bit creatively there is a lot of info which can be gleaned from it.
I flew along that line of TS/CBs on Friday at 4pm from North Weald, LeTouquet to LeBaule (we end up landing at StNazaire du to low clouds & getting dark for LaBaule), the biggest patch was mainly over land in France but really high altitude build up: the base was about 8000ft and the tops were 20deg above the horizon from 20nm (FL300?) as we went to L2K, the ride over the channel was smooth & hazy (hot & pollution?) and over land bumpy, not a single strike in stormscope (I hope it was working and ON ) but we could see few isolated heavy shower deep in land on iPad and for real when visibility did improve