{"ok":true,"location_name":"Rochester, NY","location":[42.8864,-78.8784],"question":"briefing","answer":"**Rochester, NY (KBUF) NWS Briefing**  \nNow: 66.2°F, Cloudy, 68% humidity, W wind 16.1 mph. Observed 22 min ago.  \n\nThis Afternoon: Showers and thunderstorms likely, 66°F, W 15 mph (gusts 26 mph), 60% precip chance.  \nTonight: Chance showers/thunderstorms then mostly cloudy, 59°F, W 7–14 mph, 40% chance.  \nTuesday: Partly sunny, 74°F.  \nTuesday Night: Partly cloudy, 60°F.  \nWednesday: Partly sunny, 79°F.  \n\nActive alert: Beach Hazards Statement.  \nNWS data.","structured":{"current":{"temperature_f":66.2,"conditions":"Cloudy","conditions_raw":"Cloudy","sky_source":"nws_textDescription","observation_age_label":"22 min ago","observation_freshness":"acceptable","station_id":"KBUF","wind_speed_mph":16.1,"wind_direction_compass":"W"},"alerts":{"point_count":null,"nearby_count":null},"severe_proxy":{"method":"doc_independent","not_nws":true,"not_radiosonde":true,"not_model_grid":true,"disclaimer":"DOC independent analysis — not NWS guidance. Parameters are DOC-model estimates with hard physical caps. Not a radiosonde or official forecast. NWS is provided separately for comparison/scorekeeping only.","note":"DOC independent model with hard caps. NWS is comparison-only (see performance_vs_nws) to track if DOC outperforms official guidance.","surface_cape_jkg":751.9,"wind_shear_0_6km_ms":14.1,"supercell_composite":0.44,"significant_tornado":0.14,"tornado_probability":0.009,"severe_thunderstorm_probability":0.176,"hail_probability":0.1,"severe_risk_category":"marginal","doc_confidence":0.69,"doc_forecast":{"method":"doc_persistence_climatology_blend","next_24h_high_f":76.8,"next_24h_low_f":57.7,"precip_chance_next_24h":0.4},"performance_vs_nws":{"purpose":"Track whether DOC independent analysis outperforms NWS baseline","doc_not_derived_from_nws":true,"temperature_f":{"doc":65.7,"nws":66.2,"doc_minus_nws":-0.5,"abs_error":0.5,"doc_closer_to_nws_if_abs_lt_2":true},"today_high_f":{"doc":76.8,"nws":66,"doc_minus_nws":10.8,"abs_error":10.8},"tonight_low_f":{"doc":57.7,"nws":59,"doc_minus_nws":-1.3,"abs_error":1.3},"current_temp_verdict":"doc_tracks_nws","note":"Lower abs_error vs NWS means DOC is closer to the official observation/forecast. This does not mean DOC *is* NWS — DOC remains independent."},"nws_comparison":{"source":"NWS","role":"comparison_baseline_only","temperature_f":66.2,"conditions":"Cloudy","station_id":"KBUF","observation_age_label":"22 min ago","observed_at":"2026-08-24T18:50:00+00:00","humidity":68.2,"wind_speed_mph":16.1,"today_high_f":66,"tonight_low_f":59,"period_count":14}}},"citations":[{"id":"nws-obs","label":"NWS station KBUF","url":"https://api.weather.gov/stations/KBUF/observations/latest","fields":["temperature_f","humidity","wind","conditions","observed_at"]},{"id":"nws-forecast","label":"NWS gridpoint / period forecast","url":"https://forecast.weather.gov/MapClick.php?lat=42.8864&lon=-78.8784","fields":["periods","hourly"]},{"id":"nws-alerts","label":"NWS active alerts","url":"https://api.weather.gov/alerts/active?point=42.8864,-78.8784","fields":["alert_count","nearby_zone_alerts"]},{"id":"doc-status","label":"Weather AGI public status","url":"/status?lat=42.8864&lon=-78.8784&location_name=Rochester, NY"}],"agi":{"available":true,"provider":"xai-grok","model":"grok-4.3"},"facts_used":{"current_temp_f":66.2,"observation_age":"22 min ago","observation_freshness":"acceptable","severe_context":{"method":"doc_independent","not_nws":true,"not_radiosonde":true,"not_model_grid":true,"disclaimer":"DOC independent analysis — not NWS guidance. Parameters are DOC-model estimates with hard physical caps. Not a radiosonde or official forecast. NWS is provided separately for comparison/scorekeeping only.","note":"DOC independent model with hard caps. NWS is comparison-only (see performance_vs_nws) to track if DOC outperforms official guidance.","surface_cape_jkg":751.9,"wind_shear_0_6km_ms":14.1,"supercell_composite":0.44,"significant_tornado":0.14,"tornado_probability":0.009,"severe_thunderstorm_probability":0.176,"hail_probability":0.1,"severe_risk_category":"marginal","doc_confidence":0.69,"doc_forecast":{"method":"doc_persistence_climatology_blend","next_24h_high_f":76.8,"next_24h_low_f":57.7,"precip_chance_next_24h":0.4},"performance_vs_nws":{"purpose":"Track whether DOC independent analysis outperforms NWS baseline","doc_not_derived_from_nws":true,"temperature_f":{"doc":65.7,"nws":66.2,"doc_minus_nws":-0.5,"abs_error":0.5,"doc_closer_to_nws_if_abs_lt_2":true},"today_high_f":{"doc":76.8,"nws":66,"doc_minus_nws":10.8,"abs_error":10.8},"tonight_low_f":{"doc":57.7,"nws":59,"doc_minus_nws":-1.3,"abs_error":1.3},"current_temp_verdict":"doc_tracks_nws","note":"Lower abs_error vs NWS means DOC is closer to the official observation/forecast. This does not mean DOC *is* NWS — DOC remains independent."},"nws_comparison":{"source":"NWS","role":"comparison_baseline_only","temperature_f":66.2,"conditions":"Cloudy","station_id":"KBUF","observation_age_label":"22 min ago","observed_at":"2026-08-24T18:50:00+00:00","humidity":68.2,"wind_speed_mph":16.1,"today_high_f":66,"tonight_low_f":59,"period_count":14}}},"source":"NWS facts + Grok synthesis","generated_at":"2026-08-24T19:11:54.201644Z"}