Grand Som

Name: Grand Som
Address: FR

50🟡 Marginal

France · Takeoff 1578 m

Forecast next days

2026-05-2065

Día volable, condiciones decentes, base de cúmulos ~565 m, viento 15 km/h.

Wind max: 15 km/h

Base: 565 m

CAPE: 0

LI: 1.0

2026-05-2170

Día volable, condiciones decentes, base de cúmulos ~635 m, viento 9 km/h.

Wind max: 9 km/h

Base: 635 m

CAPE: 90

LI: 1.6

2026-05-2275

Día muy favorable para XC, base de cúmulos ~1272 m, viento 7 km/h.

Wind max: 7 km/h

Base: 1272 m

CAPE: 30

LI: 0.7

2026-05-2390

Día muy favorable para XC, base de cúmulos ~1246 m, viento 10 km/h.

Wind max: 10 km/h

Base: 1246 m

CAPE: 210

LI: 0.4

Map and thermal hotspots

Accessible list of hotspots (12)

Latitude	Longitude	Altitude (m)	Probability
45.344	5.845	1615	0.99
45.363	5.813	1595	0.90
45.342	5.835	1376	0.89
45.344	5.871	1810	0.82
45.390	5.765	1040	0.75
45.354	5.797	1206	0.72
45.408	5.779	748	0.72
45.368	5.805	1576	0.71
45.382	5.763	1071	0.70
45.385	5.869	1513	0.69
45.414	5.785	722	0.65
45.401	5.774	989	0.60

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Takeoff description

alti:1989m From the landing go to 'Saint Pierre de Chartreuse' village and cross it. Take the D102b road to the north ('Saint Pierre d'Entremont' direction) and stop on the 'Cucheron' pass. Walk and follow the sign 'Grand Son' summit during 3h. grass slope just before the summit.