Peak WX

Peak WX is a text-first weather web application for local, aviation, and winter forecasts.

features:
* location - search formats supported:
    - city / place name (e.g. Stowe, VT)
    - zip code (e.g. 05672)
    - airport ICAO / IATA (e.g. BTV, KMWN)
    - lat,lon decimal (e.g. 44.53, -72.78)
    - Plus Code (e.g. 87G7MXQ4+P5 or CWC8+R9, Mountain View)
    - Geohash (e.g. dr5reg or #dr5reg)
    - DMS coordinates (e.g. 44°16'13.8"N 71°18'11.5"W)
    - UTM grid coordinates (e.g. 19T 316200E 4904500N)
  recent locations (arrow up/down/enter to navigate, clear button), permalink URLs (?q= short), geolocation button.
* forecast - current + daily periods, expandable hourly detail, mountain base/peak temps, snow depth, icy-conditions flag, sub-freezing temps highlighted, freezing level FZLVL + context (all snow / mix / rain line), snow-to-liquid ratio (SLR) chips (powder snow, average snow, dense snow), climate normals (temp vs 30-year average), NWS Forecast Discussion links
* aviation - raw + decoded METAR/TAF by ICAO/IATA, 3-letter codes auto-tried as K-prefixed US ICAO; falls back to aviationweather.gov link if no raw report, interactive token-by-token METAR/TAF decoder panel
* alerts - live NWS alerts, winter hazards flagged distinctly, self-computed overnight frost/freeze warnings (<=36°F frost, <=32°F freeze), self-computed dangerous wind chill warnings (feels-like <= -26°C / -15°F)
* trackers - cold ~ coldest US + world spots (400+ locations, US + world, max 3 per US state), snow ~ ski area current conditions & 7-day forecast (549 top areas), regional filtering for snow tracker (us-east, us-west, canada, europe, pac, all)
* units - F/C toggle (persisted), switches wind/precip units + date format, auto light/dark theme
* offline - cached results with per-type TTLs, stale fallback, force refresh, batched + rate-limited tracker requests with automatic backoff retry logic, service worker offline shell & network-first API fallback
* cache - location 3h, cold 3h, snow now 6h, 7-day 12h, alerts 20m, grid-points 30d
* header - live clock, updates every 30s
* coolness - cool factor = off the charts

shortcuts:
  /          search location (selects existing text for quick overwrite)
  f          F units (°F, mph, in)
  c          C units (°C, km/h, mm, cm)
  k          cold tracker - coldest spots US + world
  s          snow tracker (now / 7-day)
  ← / →      cycle snow regions while snow tracker is active
  E/W/C/U/P/A snow regions - Shift + E (East), W (West), C (Canada), U (Europe), P (Pac), A (All)
  r          force refresh - purge cache, reload fresh
  h          toggle help
  esc        close tracker / help / recent dropdown / unfocus

scripts:
 * bash : pwx.one/scripts/pwx.sh
 * python : pwx.one/scripts/pwx.py
 * powershell : pwx.one/scripts/pwx.ps1

sources:
 * national weather service (weather.gov)
 * open-meteo (open-meteo.com)
 * aviation weather (aviationweather.gov)

contact:
* threads.com/@peakwxnow