{"ok":true,"location_name":"Rochester, NY","location":[43.0481,-76.1474],"question":"briefing","answer":"**Rochester, NY Briefing (NWS)**\n\nCurrent: 71.1°F (feels 71°F), Cloudy, 66% humidity. METAR KSYR 58 min ago shows SCT025 BKN032 OVC075.\n\nThis Afternoon: 73°F, 50% chance rain showers, NW 9 mph.  \nTonight: 58°F, 20% slight chance showers then partly cloudy, W 2-8 mph.  \nWednesday: 83°F, patchy fog then mostly sunny.  \nWednesday Night: 66°F, partly cloudy.  \nThursday: 85°F, 70% showers/thunderstorms likely after 2pm.\n\nNo active alerts. 7-day range: highs 73-85°F, lows 55-66°F. NWS.","structured":{"current":{"temperature_f":71.1,"conditions":"Cloudy","conditions_raw":"Cloudy","sky_source":"nws_textDescription","observation_age_label":"58 min ago","observation_freshness":"aging","station_id":"KSYR","wind_speed_mph":null,"wind_direction_compass":null},"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":900.0,"wind_shear_0_6km_ms":10.1,"supercell_composite":0.38,"significant_tornado":0.1,"tornado_probability":0.005,"severe_thunderstorm_probability":0.176,"hail_probability":0.12,"severe_risk_category":"marginal","doc_confidence":0.69,"doc_forecast":{"method":"doc_persistence_climatology_blend","next_24h_high_f":77.5,"next_24h_low_f":63.5,"precip_chance_next_24h":0.5},"performance_vs_nws":{"purpose":"Track whether DOC independent analysis outperforms NWS baseline","doc_not_derived_from_nws":true,"temperature_f":{"doc":71.5,"nws":71.1,"doc_minus_nws":0.4,"abs_error":0.4,"doc_closer_to_nws_if_abs_lt_2":true},"today_high_f":{"doc":77.5,"nws":73,"doc_minus_nws":4.5,"abs_error":4.5},"tonight_low_f":{"doc":63.5,"nws":58,"doc_minus_nws":5.5,"abs_error":5.5},"current_temp_verdict":"doc_tracks_nws","note":"Lower abs_error vs NWS means DOC is closer to the official observation/forecast. 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