Tendance du vendredi 13 f\u00e9vrier
Indice de risque fort
sque accidentel demeurant maximal :
paisse couche de neige r\u00e9cente n'est pas
abilis\u00e9. Les d\u00e9parts spontan\u00e9s deviennent
us rares. Grandes avalanches possibles,
\u00eame \u00e0 distance.
", "valid_from": null, "valid_until": null, "tendency_type": "steady"}], "tendency_lead": null, "weather_review": null, "weather_forecast": null, "avalanche_activity": {"comment": "cumuls de neige fraiche hors normes avec entre 100 et 150 cm accumul\u00e9s depuis le d\u00e9but de la s\u00e9quence. Tr\u00e8s forte activit\u00e9 naturelle \u00e0 pr\u00e9voir, tout au
long de la journ\u00e9e. Des grandes \u00e0 tr\u00e8s grandes avalanches sont possibles au d\u00e9part des pentes d'altitude. GROS VOLUMES MOBLIS\u00c9S, AVALANCHES pouvant atteindre LEUR
EMPRISE MAXIMALE CONNUE.
risque accidentel maximal. Instabilit\u00e9s g\u00e9n\u00e9ralis\u00e9es, fortes propagations, gros volumes mobilisables, m\u00eame en terrain peu raides.
", "highlights": "RISQUE MAXIMAL. CUMULS DE NEIGE HORS NORMES. GRANDES A TR\u00c8S GRANDES AVALANCHES."}, "snowpack_structure": "neige fra\u00eeche couche fragile persistante
SITUATION CRITIQUE. RISQUE MAXIMAL.
D\u00e9parts spontan\u00e9s : cumuls de neige fraiche hors normes avec entre 100 et 150 cm accumul\u00e9s depuis le d\u00e9but de la s\u00e9quence. Tr\u00e8s forte activit\u00e9 naturelle \u00e0 pr\u00e9voir, tout au
long de la journ\u00e9e. Des grandes \u00e0 tr\u00e8s grandes avalanches sont possibles au d\u00e9part des pentes d'altitude. GROS VOLUMES MOBLIS\u00c9S, AVALANCHES pouvant atteindre LEUR
EMPRISE MAXIMALE CONNUE.
D\u00e9clenchements provoqu\u00e9s : risque accidentel maximal. Instabilit\u00e9s g\u00e9n\u00e9ralis\u00e9es, fortes propagations, gros volumes mobilisables, m\u00eame en terrain peu raides.
"}, "danger": {"key": "very_high", "number": "5", "ratings": [{"key": "very_high", "period": "all_day", "elevation": null, "subdivision": null}], "subdivision": null}, "source": "METEOFRANCE", "traits": [{"prose": null, "title": "Dry avalanches", "band_id": null, "category": "dry", "problems": [{"extras": {}, "aspects": [], "elevation": null, "frequency": null, "time_period": "", "comment_html": "", "problem_type": "new_snow", "avalanche_size": null, "avalanche_type": null, "core_zone_text": null, "snowpack_stability": null, "danger_rating_value": "very_high"}, {"extras": {}, "aspects": [], "elevation": null, "frequency": null, "time_period": "", "comment_html": "", "problem_type": "persistent_weak_layers", "avalanche_size": null, "avalanche_type": null, "core_zone_text": null, "snowpack_stability": null, "danger_rating_value": "very_high"}, {"extras": {}, "aspects": [], "elevation": null, "frequency": null, "time_period": "", "comment_html": "", "problem_type": "no_distinct_avalanche_problem", "avalanche_size": null, "avalanche_type": null, "core_zone_text": null, "snowpack_stability": null, "danger_rating_value": "very_high"}], "elevation": null, "geography": {"source": "prose_only"}, "time_period": "all_day", "danger_level": 5}], "derived": {"state": {"rating": "very_high", "version": 1, "problems": [{"lower": null, "upper": null, "rating": "very_high", "aspects": [], "treeline": null, "problem_type": "new_snow"}, {"lower": null, "upper": null, "rating": "very_high", "aspects": [], "treeline": null, "problem_type": "persistent_weak_layers"}], "fingerprint": "bb18576554826785", "subdivision": null, "unscheduled": false}, "danger_levels": {"max": "very_high", "levels": ["very_high"]}, "terrain_rules": [{"lower": null, "upper": null, "rating": 5, "aspects": [], "decided": false}], "problem_family": "mixed", "headline_inputs": {"family": "mixed", "source": "METEOFRANCE", "direction": "none", "peak_rating": "5", "partition_type": "none"}, "period_transition": null}, "version": 10, "metadata": {"lang": "fr", "valid_from": "2026-02-11T16:00:00+00:00", "next_update": null, "unscheduled": false, "valid_until": "2026-02-12T23:59:59+00:00", "publication_time": "2026-02-11T15:58:55+00:00"}, "danger_patterns": []}