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# WGC 2021 France - Forecast For Fri Aug 20, 2021 ## Synopsis and Characterization of day Surface high dominating all of Western Europe. The ridge axis is just N and NE of the task area... from NE France to Brittany. This will bring east surface winds 5-8 kts through the soaring day shifting to light S-SE near the top of the thermal layer. Aloft, a 500mb ridge and light westerly flow will drift eastward during the day. Coincident with the upper ridge moving through will be a band of high clouds and some dense cirrus passing over Montlucon around 3-5pm CET. Check the Skysight high clouds graphics (uses GFS model) and Windy.com showing both the ECMWF and GFS models. Far less cumulus is expected today. Skysight is showing on the order of 10-20 pct coverage... and TopMeteo is indicating no cumulus or a blue day. TopMeteo is predicting thermal heights 4800ft msl at 1300 CET... lifting to 6400msl by1600. 3kts lift dropping to 1kt between 1730-1800 CET. Skysight is showing soarable heights 4000-4300 ft msl which is 1000-2000 ft lower than TopMeteo. Condensation level is 1000ft above the soarable height predicted. Lift 3kts dropping to 1.5kt under thicker cirrus bands. Lift dropping to 1.5kts around 1800 CET. My call on this... a better on average 3kt soaring day to 5000 msl mid afternoon except under cirrus bands and after 1800 CET. ____ ## Skysight - SkewT Forecast LFBK 1500 CET ![Skysight SkewT Forecast LFBK 1500 CET](https://www.dropbox.com/s/m46ps5ulc08tksg/Skysight_SkewT_1500CET_FriAug20.jpg?raw=1) ____ ## Windy.com Overview large scale ### Windy.com 500mb Heights and Winds - Thu Night to Fri Night <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/cpp7p5o13lshmlk/Windy_500mbHgtsWinds_ThuNight_to_FriNight.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Windy_500mbHgtsWinds_ThuNight_to_FriNight](https://www.dropbox.com/s/cpp7p5o13lshmlk/Windy_500mbHgtsWinds_ThuNight_to_FriNight.mp4?raw=1) ### Windy.com Surface pressure and Rain - Thu night through Fri night - ECMWF model <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/pm2dny59i9m85ob/Windy_SurfaceSLP_Rain_ThuNight_to_FriNight.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Windy_500mbHgtsWinds_ThuNight_to_FriNight](https://www.dropbox.com/s/pm2dny59i9m85ob/Windy_SurfaceSLP_Rain_ThuNight_to_FriNight.mp4?raw=1) ### Windy.com High Clouds ECMWF model - 11am-7pm <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/gw2awppk1n20hci/Windy_HightClouds_ECMW_11am-7pmF.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Windy_HighClouds_ECMWF](https://www.dropbox.com/s/gw2awppk1n20hci/Windy_HightClouds_ECMW_11am-7pmF.mp4?raw=1) ### Windy.com High Clouds GFS model - 11am-7pm <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/3a3lwpxr37k0xg7/Windy_HighClouds_GFS_11am-7pm.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Windy_HighClouds_GFS](https://www.dropbox.com/s/3a3lwpxr37k0xg7/Windy_HighClouds_GFS_11am-7pm.mp4?raw=1) ____ ## TopMeteo Site Forecast Meteogram - LFBK - Friday ![TopMeteo LFBK meteogram](https://www.dropbox.com/s/cpmlvrziezracrh/TopMeteo_LFBK_Meteogram.jpg?raw=1) ## Skysight Meteogram - LFBK - Friday ![SKYSIGHT LFBK METEOGRAM](https://www.dropbox.com/s/0u1wkh9gkrq9d3q/Skysight_LFBK_Meteogram.jpg?raw=1) ____ ## TopMeteo Thermals with and without airspace <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/bipj5a9cpc4nlq0/TopMeteo_Thermals.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [TopMeteo_Thermals](https://www.dropbox.com/s/bipj5a9cpc4nlq0/TopMeteo_Thermals.mp4?raw=1) <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/rbw4f2qr9l6znfi/TopMeteo_Thermals_MAP.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [TopMeteo_Thermals_MAP](https://www.dropbox.com/s/rbw4f2qr9l6znfi/TopMeteo_Thermals_MAP.mp4?raw=1) ## TopMeteo Clouds with and without airspace <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/bwwtfnxquanqgt2/TopMeteo_Clouds.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [TopMeteo_Clouds](https://www.dropbox.com/s/bwwtfnxquanqgt2/TopMeteo_Clouds.mp4?raw=1) <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/gk28qy1xkj8yqba/TopMeteo_Clouds_MAP.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [TopMeteo_Clouds_MAP](https://www.dropbox.com/s/gk28qy1xkj8yqba/TopMeteo_Clouds_MAP.mp4?raw=1) ____ ## Skysight Thermal Heights <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/i4ebrchbug4mg8o/Skysight_ThermalHgts.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Skysight_ThermalHgts](https://www.dropbox.com/s/i4ebrchbug4mg8o/Skysight_ThermalHgts.mp4?raw=1) ## Skysight Cu Cloud Base <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/853amokhy8f2573/Skysight_CuCloudsBase.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Skysight_CuCloudBase](https://www.dropbox.com/s/853amokhy8f2573/Skysight_CuCloudsBase.mp4?raw=1) ## Skysight Clouds <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/ichanjyidutblka/Skysight_Clouds.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Skysight_Clouds](https://www.dropbox.com/s/ichanjyidutblka/Skysight_Clouds.mp4?raw=1) ## Skysight Low Cloud Coverage France <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/fx2zdxupki3fesg/Skysight_LowClouds.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Skysight_LowCloudCoverageFrance](https://www.dropbox.com/s/fx2zdxupki3fesg/Skysight_LowClouds.mp4?raw=1) ## Skysight High Cloud Coverage France <figure class="video_container"> <iframe width="400" height="300" src="https://www.dropbox.com/s/odt2d02smrzzvet/Skysight_HighClouds.mp4?raw=1" frameborder="0" allowfullscreen="true"> </iframe> </figure> [Skysight_HighCloudCoverageFrance](https://www.dropbox.com/s/odt2d02smrzzvet/Skysight_HighClouds.mp4?raw=1)