Fix: use demo.load to initialize year/status (remove invalid .update call)

Fix: import pandas in app.py for PoE callback type annotation and state

Add NBM Viewer (CSV) emulation: client + percentiles + PoE; integrate new tab

fix: import wind-rose grid; silence xarray SerializationWarning; add scipy dependency for snow PoE heuristic

fix: verify 3-hr dataset is openable before use; blended long-range now picks first 3-hr hour that opens cleanly

feat: heuristic fallbacks for Snow PoE (lognormal from snowfall mean) and Precip Type probs (wet-bulb from T/Td); expand cloud-layer candidates; add per-step wind rose small-multiples grid

fix: blended fetch unpack (df, meta, label); render snow charts even when values are small/zero (as long as not all NaN)

feat: make 10-day view robust by blending 1-hr (first 36h) + 3-hr (remainder); scope 1-hr-only panels (snow PoE/cloud layers/snow level) to first 36h; use 3-hr ptype for long range

feat: add wind rose (10m) using wind direction var detected by long_name; ensure snow level fetch prefers snowlvl_0m; include wind rose plot in UI

feat: derive snow estimate from QPF * SLR * P(snow) when deterministic snowfall unavailable; prefer asnowsfc else fallback for snow charts

feat: add cloud layers plot (tcdcl195/196/197,tcdchcll), precip type probabilities (Rain/Snow/FZRA/Sleet), and snow level + precip panel; show these when vars are present

feat: visible precip bars via dual y-axes; add deterministic snowfall charts (6h+accum, 24/48/72h); include snowfall in data fetch; show elapsed time in status

fix: mask OPeNDAP fill values (9e19+) to NaN before unit conversions; prevents huge constants and flat series when point is outside domain or data missing

fix: robust snow PoE fetch by scanning available asnow*gt*sfc vars; read each var individually to avoid pydap buffer issue; auto-generate labels

fix: validate DDS content during discovery; avoid selecting unavailable datasets that return 200 with Error block

fix: force pydap dap2:// scheme to avoid token parse issues with NOMADS OPeNDAP

fix: harden dataset discovery; probe hours when listings fail and fallback to 3-hr if 1-hr missing

feat: support up to 10 days by switching to latest 3-hr NBM for horizons >36h; correctly slice by dataset timestep; extend hours slider to 240

feat: add Plotly charts + NBM snow probability series; wire into UI

Add detailed logging and live status updates; instrument NOMADS discovery, open_dataset, indexing, fetch timings. Stream status to UI and console.

Replace gr.Map with Leaflet in gr.HTML; wire clicks to lat/lon inputs and forecast. Fix runtime error on older gradio.

Add NBM Gradio Space app: map-click forecast via NOAA NOMADS (xarray+pydap). Update README and requirements.

initial commit