Chablais
Ski resorts in this massif: Avoriaz, Morzine, Les Gets, Châtel, Abondance, La Chapelle-d'Abondance, Montriond, Saint-Jean-d'Aulps, Bellevaux - La Chèvrerie, Bernex, Thollon-les-Mémises, Hirmentaz, Les Habères, Flaine, Les Carroz, Samoëns, Morillon, Praz de Lys Sommand, Mieussy-Sommand, Les Brasses, Drouzin Le Mont, Nancy-sur-Cluses, Passy Plaine Joux
This is an AI-generated translation and summary. It may contain errors. Always read the full official Météo-France avalanche bulletin before any mountain activity.
Source: Météo-France
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Avalanche risk assessment bulletin
(valid outside of marked and open slopes)
MASSIF: Chablais
written on Saturday, 25 April 2026 at 4 p.m.
Risk assessment for Sunday, 26 April 2026
Spring conditions
Risk indices: 5 very high - 4 high - 3 considerable - 2 moderate - 1 low -- In black: the most dangerous slopes
Low risk index evolving to moderate.
Naturally triggered avalanches: wet snow avalanche
Skier-triggered releases: small wet snow slides under skis
Stability of the snow cover until Sunday, 26 April evening
Typical avalanche situation: Wet snow
Full depth slab avalanches
Naturally triggered avalanches: * rare wet snow avalanches, becoming more numerous with warming and solar radiation. Size 1 to 2 (small to medium). * a few glide slabs in grassy areas or rock slabs, at any time of the day or night. Below 2500 m. Size 2 (medium). Above 2300 m, on east, west and north aspects, small point-release avalanches can trigger a cascading glide slab. Rare size 3 (large). Skier-triggered releases: * wet snow avalanches. Easy to trigger in the sun. Point release under the skis. Size 1 to 2. Caused by warming and solar radiation.
Snow quality
Snow conditions:
For the season, snow conditions are below average below 2500 m
Skis can be put on above 2000 m on south aspects and 1600 m on north aspects.
Snow quality this Sunday morning:
* below 2000 m, firn snow with good overnight refreezing
* above 2000 m, spring snow with good overnight refreezing.
Weather overview for Sunday, 26 April
| night | morning | afternoon | evening | |
|---|---|---|---|---|
| Sunny. Cumulus clouds over the mountains in the afternoon. Maximum of 12°C at 2000 m. | ||||
| Rain-Snow | - | - | - | - |
| Iso 0°C | 3200 m | 3300 m | 3200 m | 3200 m |
| Wind 2000 m | 5 km/h | 5 km/h | 5 km/h | 10 km/h |
| Wind 2500 m | 5 km/h | 10 km/h | 5 km/h | 10 km/h |
Off-piste snow depth
Precipitation at 1800 m
Outlook for Monday, 27 April
Risk index moderate
Monday: dry weather and rare cumulus in the afternoon. 0°C isotherm around 3000 m. ⇒ continued wetting of the snow cover
Snow-weather conditions for the last 7 days
Last 7 days
| Sun. 19/04 | Mon. 20/04 | Tue. 21/04 | Wed. 22/04 | Thu. 23/04 | Fri. 24/04 | Sat. 25/04 | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | |
| Weather | ||||||||||||||||||||||||||||
| Wind (km/h) at 2500m | 20 | 25 | 25 | 30 | 30 | 25 | 20 | 20 | 20 | 20 | 30 | 20 | 20 | 20 | 10 | 10 | 10 | 20 | 20 | 20 | 10 | 5 | 10 | 10 | 10 | 20 | 15 | 5 |
| Wind (km/h) at 2000m | 15 | 20 | 15 | 20 | 15 | 15 | 15 | 10 | 10 | 15 | 20 | 10 | 15 | 10 | 5 | 5 | 5 | 15 | 10 | 10 | 5 | 5 | 5 | 5 | 10 | 15 | 15 | 5 |
Iso 0°CRain-snow limit | ||||||||||||||||||||||||||||
Altitude (m) 3200 2400 1600 800 0 | ||||||||||||||||||||||||||||
| Sun. 19/04 | Mon. 20/04 | Tue. 21/04 | Wed. 22/04 | Thu. 23/04 | Fri. 24/04 | Sat. 25/04 | ||||||||||||||||||||||
Fresh snow (6h) | 0 cm | |||||||||||||||||||||||||||
| Avalanche Risk | ||||||||||||||||||||||||||||
Snow cover North and South at 1500m··· 2000m- - - 2500m | ||||||||||||||||||||||||||||
Total snow depth (cm) 200 160 120 80 40 0 | ||||||||||||||||||||||||||||
| Sun. 19/04 | Mon. 20/04 | Tue. 21/04 | Wed. 22/04 | Thu. 23/04 | Fri. 24/04 | Sat. 25/04 | ||||||||||||||||||||||
Snow limit - North face Snow limit - South face | ||||||||||||||||||||||||||||
Snow limit (m) 2400 2100 1800 1500 1200 900 600 300 0 | ||||||||||||||||||||||||||||
| Sun. 19/04 | Mon. 20/04 | Tue. 21/04 | Wed. 22/04 | Thu. 23/04 | Fri. 24/04 | Sat. 25/04 | ||||||||||||||||||||||
| Iso 0°C | RSL | Weather at 1800m |
Wind at 2000m |
Wind at 2500m |
||
|---|---|---|---|---|---|---|
| Sun. 19/04 | 03h | 2 700 | - | 15 | 20 | |
| 09h | 2 700 | - | 20 | 25 | ||
| 15h | 2 600 | 2 400 | 15 | 25 | ||
| 21h | 2 600 | - | 20 | 30 | ||
| Mon. 20/04 | 03h | 2 700 | - | 15 | 30 | |
| 09h | 2 600 | - | 15 | 25 | ||
| 15h | 2 500 | - | 15 | 20 | ||
| 21h | 2 500 | - | 10 | 20 | ||
| Tue. 21/04 | 03h | 2 500 | - | 10 | 20 | |
| 09h | 2 500 | - | 15 | 20 | ||
| 15h | 2 500 | - | 20 | 30 | ||
| 21h | 2 500 | - | 10 | 20 | ||
| Wed. 22/04 | 03h | 2 500 | - | 15 | 20 | |
| 09h | 2 600 | - | 10 | 20 | ||
| 15h | 2 600 | - | 5 | 10 | ||
| 21h | 2 600 | - | 5 | 10 | ||
| Thu. 23/04 | 03h | 2 600 | - | 5 | 10 | |
| 09h | 2 700 | - | 15 | 20 | ||
| 15h | 3 000 | - | 10 | 20 | ||
| 21h | 3 100 | - | 10 | 20 | ||
| Fri. 24/04 | 03h | 3 100 | - | 5 | 10 | |
| 09h | 3 200 | - | 5 | 5 | ||
| 15h | 3 200 | - | 5 | 10 | ||
| 21h | 3 200 | - | 5 | 10 | ||
| Sat. 25/04 | 03h | 2 900 | - | 10 | 10 | |
| 09h | 2 700 | - | 15 | 20 | ||
| 15h | 2 800 | - | 15 | 15 | ||
| 21h | 3 000 | - | 5 | 5 | ||
| Avalanche risk |
Snow limit | Snow depth at 2000m |
Fresh snow at 1800m |
|||
| Sun. 19/04 | N : 1 600 m S : 1 700 m | N : 140 cm S : 80 cm | 0 cm | |||
| Mon. 20/04 | N : 1 600 m S : 1 800 m | N : 130 cm S : 70 cm | 0 cm | |||
| Tue. 21/04 | N : 1 500 m S : 1 800 m | N : 130 cm S : 70 cm | 0 cm | |||
| Wed. 22/04 | N : 1 500 m S : 1 800 m | N : 120 cm S : 60 cm | 0 cm | |||
| Thu. 23/04 | N : 1 500 m S : 1 800 m | N : 120 cm S : 60 cm | 0 cm | |||
| Fri. 24/04 | N : 1 500 m S : 1 800 m | N : 110 cm S : 50 cm | 0 cm | |||
| Sat. 25/04 | N : 1 600 m S : 1 900 m | N : 100 cm S : 40 cm | ||||
| French | Translation & Notes |
|---|---|
| Conditions printanières | Spring conditions *Printanières* is the adjective for spring (*printemps*). This title signals a diurnal cycle of freezing and thawing. |
| Départs spontanés : | Spontaneous releases: *Départs* refers to the start or release of an avalanche. *Spontanés* means occurring without human triggers, usually due to natural factors like warming. |
| rares avalanches de neige humide, plus nombreuses au fil du réchauffement et du rayonnement solaire. | rare wet snow avalanches, becoming more numerous as warming and solar radiation increase. *Neige humide* is wet snow. *Au fil du* means 'over the course of' or 'as it goes'. *Rayonnement solaire* is solar radiation (sunlight hitting the snow). |
| Taille 1 à 2 (petite à moyenne). | Size 1 to 2 (small to medium). Refers to the standard D-size scale (1-5) used in avalanche reports. |
| quelques plaques de fond dans les zones herbeuses ou les dalles rocheuses, à toute heure du jour ou de la nuit. | a few glide avalanches on grassy areas or rock slabs, at any hour of the day or night. *Plaques de fond* are glide avalanches (full-depth slabs). These are unpredictable and can release at any time because they slide on the ground, often on *zones herbeuses* (grassy zones) or *dalles* (slabs/smooth rock). |
| En dessous 2500 m. | Below 2500 m. *En dessous* means below. |
| Taille 2 (moyenne). | Size 2 (medium). Medium-sized avalanche. |
| Au-dessus de 2300 m, dans les versants est, ouest et nord, de petits départs ponctuels peuvent déclencher, en cascade, une plaque de fond. | Above 2300 m, on east, west and north aspects, small point releases can trigger, in a cascade, a glide avalanche. *Au-dessus* (above). *Versants* (slopes/aspects). *Départs ponctuels* (point releases/loose snow). *En cascade* implies a step-down effect where a small slide triggers a larger one. |
| Rare taille 3 (grande). | Rare size 3 (large). Size 3 avalanches are large enough to bury a car or destroy a small building. |
| Déclenchements provoqués : | Triggered releases: *Provoqués* specifically refers to avalanches triggered by a person (skier, walker, etc.). |
| avalanches de neige humide. | wet snow avalanches. Avalanches involving wet/melting snow. |
| Facile à déclencher au soleil. | Easy to trigger in the sun. *Facile à déclencher* highlights the sensitivity of the snowpack when the sun warms it. |
| Départ ponctuel sous les skis. | Point release under the skis. *Départ ponctuel* refers to a point-source or loose-snow avalanche (sluff) rather than a slab. |
| Taille 1 à 2. | Size 1 to 2. Small to medium triggered slides. |
| Causé par le réchauffement et le rayonnement solaire. | Caused by warming and solar radiation. *Causé par* (caused by). The primary drivers here are thermal. |
| ensoleillé. | sunny. Basic weather condition. |
| Cumulus au-dessus du relief l’après-midi. | Cumulus clouds over the relief in the afternoon. *Relief* refers to the mountains or terrain profile. This describes afternoon cloud build-up. |
| Au maximum 12°C à 2000 m. | Maximum 12°C at 2000 m. Indicates a high freezing level and significant warming at elevation. |
| Enneigement : | Snowpack / Snow coverage: The general state of snow depth and distribution. |
| Pour la saison, l’enneigement est déficitaire sous 2500 m | For the season, the snowpack is below average below 2500 m *Déficitaire* means there is less snow than normal (a deficit). |
| On peut chausser les skis au-dessus de 2000 m en sud et 1600 m en nord. | You can put skis on above 2000 m on south aspects and 1600 m on north aspects. *Chausser les skis* literally means 'to put on shoes/skis'. It indicates the 'snow line' where skiing becomes possible. |
| Qualité de la neige ce dimanche matin : | Snow quality this Sunday morning: Specific description of surface snow conditions. |
| sous 2000 m, neige de névé avec un bon regel nocturne | below 2000 m, firn snow with a good overnight refreeze *Neige de névé* refers to old, dense, icy snow typically found in late spring/summer. *Regel nocturne* is the critical night-time freeze that stabilizes the snow. |
| au-dessus de 2000 m, neige de printemps avec un bon regel nocturne. | above 2000 m, spring snow with a good overnight refreeze. *Neige de printemps* usually refers to corn snow (frozen at night, softening during the day). |
| French Term | English Term | Definition | Source |
|---|---|---|---|
| Départ spontané | Naturally triggered avalanches | Avalanche not caused by external forces, e.g. snowfall or loss in firmness due to weather conditions. | European Avalanche Warning Services |
| Avalanche de fond | Full depth slab avalanches | An avalanche which glides over the ground, across firn snow or atop a glacier in the fracture zone, sweeping the entire season’s snowpack with it. | European Avalanche Warning Services |
| déclenchable | Skier-triggered releases | An avalanche caused by the weight of a person (skier, snowboarder, hiker) or by explosives. The additional load collapses a weak layer, causing the slab above to fracture and slide. | AvalancheClarity Static Glossary |
| Avalanche de neige mouillèe | Wet snow avalanches | Avalanche of wet snow masses. | European Avalanche Warning Services |
| Enneigement | Snow conditions | The depth and distribution of snow on the ground across a mountain range. Varies with elevation, aspect, and snowfall history. | AvalancheClarity Static Glossary |
| ensoleillement | solar radiation | Light and heat energy from the sun. Much of this is in the Ultraviolet part of the electromagnetic spectrum. | Avalanche Center (US) |
| Avalanche de plaque | Slab avalanches | The abrupt release of a slab of snow on a mountain slope. | European Avalanche Warning Services |
| marqué | considerable | Snowpack is moderately to poorly bonded on many steep slopes. Triggering is possible even from low additional loads, particularly on indicated steep slopes. In certain situations, some large natural avalanches are possible. | European Avalanche Warning Services |
| reptation | Glide Slabs | A cohesive slab of snow, often consisting of the entire snowpack, that lacks significant support or friction from the bed surface. | Avalanche Canada |
| Regel | Refreezing | Overnight freezing of the snow surface forming a hard crust. Refreezing temporarily stabilises the snowpack but strength decreases with daytime warming. | AvalancheClarity Static Glossary |
| Manteau neigeux | Snow cover | Snow deposited on the ground in a multiplicity of layers. | European Avalanche Warning Services |
| Hauteur de neige | Snow depth | Thickness of the snowpack measured vertically. | European Avalanche Warning Services |
| Stabilité | Stability | The strength of a snowpack to withstand internal and external disturbances.Stability is determined by firmness vs. stress inside a snow layer. | European Avalanche Warning Services |
| très fort | very high | Snowpack is generally unstable. Many large natural avalanches are expected, even on moderately steep terrain. Extremely dangerous conditions — avoid all avalanche terrain. | European Avalanche Warning Services |
| Neige humide | Wet snow | The wet snow problem is related to the weakening of the snowpack due to the presence of liquid water. Water infiltrates the snowpack due to high radiation impact (sunshine) which leads to melt or rain (advecting energy into the snowpack leading to melt as well). | European Avalanche Warning Services |
| limité | moderate | Snowpack is moderately well bonded on some steep slopes, otherwise generally well bonded. Triggering is possible with high additional loads, particularly on indicated steep slopes. Large natural avalanches unlikely. | European Avalanche Warning Services |
| Exposition | Aspects | Direction in which a slope faces as indicated by compass direction of the fall line; i.e. a north slope faces in a northerly direction. | European Avalanche Warning Services |
| moyen | medium | IACS/UNESCO | |
| Névé | Firn | Snow accumulated in recent years, mostly atop glaciers, intensely metamorphosed and denser because of melting and refreezing, as well as from pressures of overlying snow masses. | European Avalanche Warning Services |
| Risque | Risk | Likelihood of occurrence combines mathematical probability, risk exposure and possible damages. | European Avalanche Warning Services |
| faible | low | Snowpack is generally well bonded and stable. Triggering is generally possible only from high additional loads in a few isolated steep extreme terrain features. Only small natural avalanches possible. | European Avalanche Warning Services |
| sèche | dry | IACS/UNESCO |
Bulletin d'estimation du risque d'avalanche
(valable en dehors des pistes balisées et ouvertes)
MASSIF : Chablais
rédigé le samedi 25 avril 2026 à 16 h.
Estimation des risques pour le dimanche 26 avril 2026
Conditions printanières
Indices de risque : 5 très fort - 4 fort - 3 marqué - 2 limité - 1 faible -- En noir : les pentes les plus dangereuses
Indice de risque faible évoluant en limité.
Départs spontanés : avalanche de neige humide
Déclenchements skieurs : petits départs en neige humide sous les skis
Stabilité du manteau neigeux jusqu'au dimanche 26 avril au soir
Situation avalancheuse typique :Neige humide
Avalanches de fond
Départs spontanés : * rares avalanches de neige humide, plus nombreuses au fil du réchauffement et du rayonnement solaire. Taille 1 à 2 (petite à moyenne). * quelques plaques de fond dans les zones herbeuses ou les dalles rocheuses, à toute heure du jour ou de la nuit. En dessous 2500 m. Taille 2 (moyenne). Au-dessus de 2300 m, dans les versants est, ouest et nord, de petits départs ponctuels peuvent déclencher, en cascade, une plaque de fond. Rare taille 3 (grande). Déclenchements provoqués : * avalanches de neige humide. Facile à déclencher au soleil. Départ ponctuel sous les skis. Taille 1 à 2. Causé par le réchauffement et le rayonnement solaire.
Qualité de la neige
Enneigement :
Pour la saison, l’enneigement est déficitaire sous 2500 m
On peut chausser les skis au-dessus de 2000 m en sud et 1600 m en nord.
Qualité de la neige ce dimanche matin :
* sous 2000 m, neige de névé avec un bon regel nocturne
* au-dessus de 2000 m, neige de printemps avec un bon regel nocturne.
Aperçu météo pour le dimanche 26 avril
| nuit | matin | après-midi | soir | |
|---|---|---|---|---|
| ensoleillé. Cumulus au-dessus du relief l’après-midi. Au maximum 12°C à 2000 m. | ||||
| Pluie-Neige | - | - | - | - |
| Iso 0°C | 3200 m | 3300 m | 3200 m | 3200 m |
| Vent 2000 m | 5 km/h | 5 km/h | 5 km/h | 10 km/h |
| Vent 2500 m | 5 km/h | 10 km/h | 5 km/h | 10 km/h |
Epaisseur de neige hors-piste
Précipitations à 1800 m
Tendance du lundi 27 avril
Indice de risque limité
Lundi : temps sec et rares cumulus l’après-midi. Isotherme 0°C vers 3000 m. ⇒ poursuite de l’humidification du manteau neigeux
Conditions nivo-météo des 7 derniers jours
Les 7 derniers jours
| dim. 19/04 | lun. 20/04 | mar. 21/04 | mer. 22/04 | jeu. 23/04 | ven. 24/04 | sam. 25/04 | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | 03h | 09h | 15h | 21h | |
| Météo | ||||||||||||||||||||||||||||
| Vent (km/h) à 2500m | 20 | 25 | 25 | 30 | 30 | 25 | 20 | 20 | 20 | 20 | 30 | 20 | 20 | 20 | 10 | 10 | 10 | 20 | 20 | 20 | 10 | 5 | 10 | 10 | 10 | 20 | 15 | 5 |
| Vent (km/h) à 2000m | 15 | 20 | 15 | 20 | 15 | 15 | 15 | 10 | 10 | 15 | 20 | 10 | 15 | 10 | 5 | 5 | 5 | 15 | 10 | 10 | 5 | 5 | 5 | 5 | 10 | 15 | 15 | 5 |
Iso 0°CLimite pluie-neige | ||||||||||||||||||||||||||||
Altitude en m 3200 2400 1600 800 0 | ||||||||||||||||||||||||||||
| dim. 19/04 | lun. 20/04 | mar. 21/04 | mer. 22/04 | jeu. 23/04 | ven. 24/04 | sam. 25/04 | ||||||||||||||||||||||
Neige fraîche (6h) | 0 cm | |||||||||||||||||||||||||||
| Risque d'Avalanche | ||||||||||||||||||||||||||||
Enneigement versant Nord et Sud à 1500m··· 2000m- - - 2500m | ||||||||||||||||||||||||||||
Hauteur totale de neige (cm) 200 160 120 80 40 0 | ||||||||||||||||||||||||||||
| dim. 19/04 | lun. 20/04 | mar. 21/04 | mer. 22/04 | jeu. 23/04 | ven. 24/04 | sam. 25/04 | ||||||||||||||||||||||
Limite de l'enneigement - Versant Nord Limite de l'enneigement - Versant Sud | ||||||||||||||||||||||||||||
Limite d'enneigement (m) 2400 2100 1800 1500 1200 900 600 300 0 | ||||||||||||||||||||||||||||
| dim. 19/04 | lun. 20/04 | mar. 21/04 | mer. 22/04 | jeu. 23/04 | ven. 24/04 | sam. 25/04 | ||||||||||||||||||||||
| Iso 0°C | LPN | Météo à 1800m |
Vent à 2000m |
Vent à 2500m |
||
|---|---|---|---|---|---|---|
| dim. 19/04 | 03h | 2 700 | - | 15 | 20 | |
| 09h | 2 700 | - | 20 | 25 | ||
| 15h | 2 600 | 2 400 | 15 | 25 | ||
| 21h | 2 600 | - | 20 | 30 | ||
| lun. 20/04 | 03h | 2 700 | - | 15 | 30 | |
| 09h | 2 600 | - | 15 | 25 | ||
| 15h | 2 500 | - | 15 | 20 | ||
| 21h | 2 500 | - | 10 | 20 | ||
| mar. 21/04 | 03h | 2 500 | - | 10 | 20 | |
| 09h | 2 500 | - | 15 | 20 | ||
| 15h | 2 500 | - | 20 | 30 | ||
| 21h | 2 500 | - | 10 | 20 | ||
| mer. 22/04 | 03h | 2 500 | - | 15 | 20 | |
| 09h | 2 600 | - | 10 | 20 | ||
| 15h | 2 600 | - | 5 | 10 | ||
| 21h | 2 600 | - | 5 | 10 | ||
| jeu. 23/04 | 03h | 2 600 | - | 5 | 10 | |
| 09h | 2 700 | - | 15 | 20 | ||
| 15h | 3 000 | - | 10 | 20 | ||
| 21h | 3 100 | - | 10 | 20 | ||
| ven. 24/04 | 03h | 3 100 | - | 5 | 10 | |
| 09h | 3 200 | - | 5 | 5 | ||
| 15h | 3 200 | - | 5 | 10 | ||
| 21h | 3 200 | - | 5 | 10 | ||
| sam. 25/04 | 03h | 2 900 | - | 10 | 10 | |
| 09h | 2 700 | - | 15 | 20 | ||
| 15h | 2 800 | - | 15 | 15 | ||
| 21h | 3 000 | - | 5 | 5 | ||
| Risque avalanche |
Limite enneigement | Enneigement à 2000m |
Neige fraîche à 1800m |
|||
| dim. 19/04 | N : 1 600 m S : 1 700 m | N : 140 cm S : 80 cm | 0 cm | |||
| lun. 20/04 | N : 1 600 m S : 1 800 m | N : 130 cm S : 70 cm | 0 cm | |||
| mar. 21/04 | N : 1 500 m S : 1 800 m | N : 130 cm S : 70 cm | 0 cm | |||
| mer. 22/04 | N : 1 500 m S : 1 800 m | N : 120 cm S : 60 cm | 0 cm | |||
| jeu. 23/04 | N : 1 500 m S : 1 800 m | N : 120 cm S : 60 cm | 0 cm | |||
| ven. 24/04 | N : 1 500 m S : 1 800 m | N : 110 cm S : 50 cm | 0 cm | |||
| sam. 25/04 | N : 1 600 m S : 1 900 m | N : 100 cm S : 40 cm | ||||