{"data":{"event":{"id":"6fcee263-ebd1-4971-91fc-0e3e24694c25","slug":"introducing-weathernext-3-our-most-advanced-and-accurate-global-weather--2b0379511e","title":"Google deploys WeatherNext 3 hourly satellite-driven forecasts in Search and Maps","short_summary":"On 3 September 2026 Google DeepMind and Google Research launched WeatherNext 3, an hourly satellite-driven global model at up to 5 km resolution, and began using it in Search, Gemini, Maps, Maps Platform, Earth Engine, and Cloud.","full_description":"On 3 September 2026 Google DeepMind and Google Research launched WeatherNext 3, an hourly, satellite-driven global weather model at up to 5 km resolution, and began using it in Search, Gemini, Maps, Maps Platform, Earth Engine, and Cloud. The model ingests live geostationary satellite mosaics and station observations rather than lagged numerical-weather-prediction analyses. Google reported up to 50% more accurate precipitation forecasts at day-plus leads and cited independent live evaluations by Brightband.\n\nThis is a product-generation upgrade of the WeatherNext line, scored separately from the WeatherNext 2 consumer deployment and the WeatherNext Cyclones Nature paper.","ledger_type":"benefit","primary_domain_id":"99fd8a40-a540-41d3-af98-57c1709ee422","event_status":"provisional","event_date":"2026-09-03T00:00:00.000Z","discovery_date":"2026-09-03T00:00:00.000Z","first_published_date":"2026-09-03T00:00:00.000Z","last_reviewed_date":"2026-09-13T00:00:00.000Z","geographic_scope":"International","affected_population":"Users of Google Search, Maps, Gemini, and Cloud weather products","base_impact_tier":2,"base_score":"3.00","attribution_multiplier":"0.7500","evidence_multiplier":"0.4000","realization_multiplier":"0.8500","durability_multiplier":"0.5500","current_event_score":"0.420800","confidence_level":"medium","score_explanation":"A new operational WeatherNext generation is notable (tier 2), scored separately from the cyclone paper. Attribution is to WeatherNext 3 inside Google’s weather stack (0.75). Evidence is a developer announcement plus cited independent live evals (0.40). Realization is global product deployment (0.85).","methodology_version_id":"d7881163-fb23-4e71-8625-bac1a8662c0f","original_methodology_version_id":"d7881163-fb23-4e71-8625-bac1a8662c0f","published_at":"2026-09-13T23:08:57.261Z","created_at":"2026-09-13T23:08:57.261Z","updated_at":"2026-09-14T00:14:56.501Z","flags":[],"domain_name":"Climate & Environment","domain_slug":"climate-environment","methodology_version":"0.1"},"contributions":[{"id":"d43c69f2-beb5-49e7-a6a3-ab6011d6c5d3","event_id":"6fcee263-ebd1-4971-91fc-0e3e24694c25","model_id":"2a2ffe48-2887-4abf-9705-b7df074a525b","role_description":"Named WeatherNext 3 release powering the September 2026 Google weather products.","attribution_multiplier":"0.7500","credit_share":"1.0000","contribution_score":"0.420800","attribution_rationale":"Google names WeatherNext 3 as the model deployed across Search, Maps, Gemini, and Cloud.","attribution_confidence":"medium","first_used_date":"2026-09-03T00:00:00.000Z","model_version_if_known":null,"review_status":"approved","created_at":"2026-09-14T00:14:56.501Z","model_slug":"weathernext-3","model_name":"WeatherNext 3","identity_class":"named_release","is_internal":false,"family_name":"GraphCast","family_slug":"google-deepmind-graphcast","organization_name":"Google DeepMind","organization_slug":"google-deepmind"}],"sources":[{"id":"dd1a6322-99cb-4981-8dbb-1aa98d251b39","event_id":"6fcee263-ebd1-4971-91fc-0e3e24694c25","url":"https://deepmind.google/blog/introducing-weathernext-3-our-most-advanced-and-accurate-global-weather-ai-model/","canonical_url":"https://deepmind.google/blog/introducing-weathernext-3-our-most-advanced-and-accurate-global-weather-ai-model/","source_type":"developer_announcement","publisher":"Google DeepMind Blog","author":null,"publication_date":"2026-09-03T00:00:00.000Z","retrieved_at":"2026-09-13T23:08:57.440Z","title":"Introducing WeatherNext 3, our most advanced and accurate global weather AI model","excerpt":"Introducing WeatherNext 3, our most advanced and accurate global weather AI model","content_hash":null,"source_reliability_class":"medium","is_primary_source":true,"is_independent":true,"is_peer_reviewed":false,"archived_url":null,"created_at":"2026-09-13T23:08:57.440Z"}],"claims":[{"id":"e3cd59c2-96ba-4010-a48a-8c1667b2e34d","event_id":"6fcee263-ebd1-4971-91fc-0e3e24694c25","claim_text":"Google deploys WeatherNext 3 hourly satellite-driven forecasts in Search and Maps","claim_type":"outcome","claim_status":"supported","confidence_score":null,"created_at":"2026-09-13T23:08:57.527Z","updated_at":"2026-09-14T00:14:56.501Z"}],"revisions":[{"id":"7a81ba1d-6a15-4c8c-8369-991ff0e89fe8","event_id":"6fcee263-ebd1-4971-91fc-0e3e24694c25","model_id":null,"previous_score":"0.000000","new_score":"0.001000","previous_factors":{},"new_factors":{"evidence":0.1,"base_score":1,"durability":0.5,"attribution":0.1,"realization":0.2},"change_reason":"Auto-published from news ingest.","trigger_type":"news_ingest","trigger_source_ids":null,"reviewer_id":null,"review_status":"published","created_at":"2026-09-13T23:08:57.609Z"},{"id":"ece8710e-1ae4-48ea-bccd-dae724dcdaac","event_id":"6fcee263-ebd1-4971-91fc-0e3e24694c25","model_id":"2a2ffe48-2887-4abf-9705-b7df074a525b","previous_score":"0.001000","new_score":"0.420800","previous_factors":{"placeholder":true},"new_factors":{"evidence":0.4,"base_score":3,"durability":0.55,"attribution":0.75,"realization":0.85},"change_reason":"Editorial review of a news-ingest placeholder: rewritten, attributed to a named system, and rescored.","trigger_type":"editorial_review","trigger_source_ids":null,"reviewer_id":null,"review_status":"published","created_at":"2026-09-14T00:14:56.501Z"}],"secondary":[]},"methodology_version":"0.1"}