Vierwaldstättersee area 2019-Aug-18-Sun at 21:22:41Z. custom forecast (GFS 0.5°) by soaringmeteo.ch, © 2016. Evening forecast with data 12Z.

Date		2019-Aug-19-Mon				2019-Aug-20-Tue				2019-Aug-21-Wed				2019-Aug-22-Thu				2019-Aug-23-Fri				2019-Aug-24-Sat				2019-Aug-25-Sun
Winter (Summer) time		10h (11h)	13h (14h)	16h (17h)		10h (11h)	13h (14h)	16h (17h)		10h (11h)	13h (14h)	16h (17h)		10h (11h)	13h (14h)	16h (17h)		10h (11h)	13h (14h)	16h (17h)		10h (11h)	13h (14h)	16h (17h)		10h (11h)	13h (14h)	16h (17h)
Flyable ? +/-		---	---	---		---	---	---		---	---	---		---	---	---		+++	---	---		+++	---	---		+++	+++	---
ThQ %		9	34	21		2	1	1		30	32	32		31	32	33		54	54	54		51	61	41		55	76	68
General wind kmh		NW 8	N 7	NNW 6		N 6	WNW 8	N 10		NNE 7	NNW 7	NNE 5		NNW 6	N 6	N 7		N 5	N 7	N 7		NNW 5	NNW 6	N 6		N 3	NW 6	NNW 7
Top wind kmh		WNW 11	N 2	NNW 6		NNE 8	NW 13	NNE 13		ENE 8	NNE 3	ENE 6		NNE 2	NE 3	NE 4		SE 2	N 2	N 4		NW 5	NNW 3	NNW 5		WNW 1	WNW 4	NW 8
Cloud cover %		87	94	98		100	100	100		79	90	100		100	95	87		0	0	7		45	68	100		38	22	16
Rain mm		2	4	3		2	8	5		0	0	0		0	0	0		0	1	2		0	0	0		0	0	1
Sea level Pressure hPa		1017	1017	1017		1019	1023	1023		1023	1022	1021		1023	1022	1022		1019	1017	1016		1016	1015	1014		1016	1014	1014
Isotherm 0°C m		3600	3900	3900		3800	3800	3500		3600	3800	3900		4000	4000	4100		4000	4000	4100		4000	4100	4100		3900	4000	4000
Storm risk		Very high risk.				No or very low risk.				No or very low risk.				No or very low risk.				High risk.				No or very low risk.				High risk.

NB: not flyable --- if rainy, too cloudy, too windy and high risk of thunderstorm.