{"ok":true,"location_name":"Rochester, NY","location":[40.7128,-74.006],"question":"briefing","answer":"**NWS Briefing (KNYC):**  \nCurrent: 78.1°F (feels like 78°F), Mostly Clear, humidity 52%. Observation 1h 20m old.  \n\nThis Afternoon: 81°F, slight chance showers/thunderstorms (20%), partly sunny, SW 14 mph.  \nTonight: 68°F, slight chance early then mostly clear, W 7-12 mph gusts 22 mph.  \n\nTuesday: 81°F, mostly sunny then slight chance storms (20%). Tuesday Night: 68°F, slight chance early then clear.  \n\nNo active NWS alerts. Seven-day range: highs 80-83°F, lows 68-72°F. Source: NWS.","structured":{"current":{"temperature_f":78.1,"conditions":"Mostly Clear","conditions_raw":"Mostly Clear","sky_source":"nws_textDescription","observation_age_label":"1h 20m ago","observation_freshness":"aging","station_id":"KNYC","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":11.2,"supercell_composite":0.42,"significant_tornado":0.11,"tornado_probability":0.007,"severe_thunderstorm_probability":0.182,"hail_probability":0.12,"severe_risk_category":"marginal","doc_confidence":0.69,"doc_forecast":{"method":"doc_persistence_climatology_blend","next_24h_high_f":87.2,"next_24h_low_f":68.0,"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":81.2,"nws":78.1,"doc_minus_nws":3.1,"abs_error":3.1,"doc_closer_to_nws_if_abs_lt_2":false},"today_high_f":{"doc":87.2,"nws":81,"doc_minus_nws":6.2,"abs_error":6.2},"tonight_low_f":{"doc":68.0,"nws":68,"doc_minus_nws":0.0,"abs_error":0.0},"current_temp_verdict":"doc_near_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":78.1,"conditions":"Mostly Clear","station_id":"KNYC","observation_age_label":"1h 20m ago","observed_at":"2026-08-24T17:51:00+00:00","humidity":51.9,"wind_speed_mph":null,"today_high_f":81,"tonight_low_f":68,"period_count":14}}},"citations":[{"id":"nws-obs","label":"NWS station KNYC","url":"https://api.weather.gov/stations/KNYC/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=40.7128&lon=-74.006","fields":["periods","hourly"]},{"id":"nws-alerts","label":"NWS active alerts","url":"https://api.weather.gov/alerts/active?point=40.7128,-74.006","fields":["alert_count","nearby_zone_alerts"]},{"id":"doc-status","label":"Weather AGI public status","url":"/status?lat=40.7128&lon=-74.006&location_name=Rochester, NY"}],"agi":{"available":true,"provider":"xai-grok","model":"grok-4.3"},"facts_used":{"current_temp_f":78.1,"observation_age":"1h 20m ago","observation_freshness":"aging","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":900.0,"wind_shear_0_6km_ms":11.2,"supercell_composite":0.42,"significant_tornado":0.11,"tornado_probability":0.007,"severe_thunderstorm_probability":0.182,"hail_probability":0.12,"severe_risk_category":"marginal","doc_confidence":0.69,"doc_forecast":{"method":"doc_persistence_climatology_blend","next_24h_high_f":87.2,"next_24h_low_f":68.0,"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":81.2,"nws":78.1,"doc_minus_nws":3.1,"abs_error":3.1,"doc_closer_to_nws_if_abs_lt_2":false},"today_high_f":{"doc":87.2,"nws":81,"doc_minus_nws":6.2,"abs_error":6.2},"tonight_low_f":{"doc":68.0,"nws":68,"doc_minus_nws":0.0,"abs_error":0.0},"current_temp_verdict":"doc_near_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":78.1,"conditions":"Mostly Clear","station_id":"KNYC","observation_age_label":"1h 20m ago","observed_at":"2026-08-24T17:51:00+00:00","humidity":51.9,"wind_speed_mph":null,"today_high_f":81,"tonight_low_f":68,"period_count":14}}},"source":"NWS facts + Grok synthesis","generated_at":"2026-08-24T19:11:27.093836Z"}