Aviation
METARs TAFs and SIGMETs
METAR or TAF - NOAA NWS AWC request forms (can get METAR + TAF from both pages)
» or direct to last 3h METARs+TAF for: NZAA, NZWN, NZCH
Surface observations - Uni of Wyoming
» or direct to text listing for: NZAA NZWN NZCH
PreFlight - meteorological and aeronautical info on one platform from MetService and AeroPath
Airways IFIS (Internet Flight Information Service) - register for free (non-commercial)
NOAA NWS Aviation Weather Center IFFDP:
» Aus/NZ METARs or TAFs (incl AA/WN/CH) and SIGMETs (incl NZZC)
» SW Pacific Oceanic SIGMETs (incl NZZO)
SkyVector - SIGMET's plotted on a chart
Charts
NOAA NWS Aviation Weather Center IFFDP - SIGWX and Wind/Temp charts and more
Soundings
NZ, Chatham and Raoul Islands soundings (tephigam) - MetVUW
Australia/NZ soundings - BoM
NZ/Global soundings/text - Wyoming Uni
SondeHub Tracker - live and historical data via an open source tracking project
Forecast soundings (GFS) via: BSCH "Stormcast" - select the time on the left, then click the map
Upper Winds
Satellite derived cloud-track winds - East Australia region - CIMSS
Volcanoes
Wellington VAAC - for current advisories
Darwin VAAC
GeoNet NZ Volcano Homepage - with Alert Level Summary table including Aviation Colour Code
NOAA HYSPLIT Model - Hybrid Single Particle Lagrangian Integrated Trajectory Model - for trajectory, dispersion and volcanic ash
NOAA/CIMSS
Volcanic Cloud Monitoring (Noth Island, multi-satellite animation)
OMI SO2 Column - composite images via NOAA, also volcano specific images
Weekly volcano report - from Smithsonian Inst.
Volcano World - current volcanic activity reports and information
Reference
Aviation Calculations & Conversions - including simple QFE and standard atmosphere calculators
NZ AIP - Aeronautical Information Publication - documentation and charts, including NZ aerodromes, eg Wellington
ICAO/IATA codes - Airport code lookup
ICAO GIS maps: FIR and VAAC areas
Aircraft Tracking
Flightradar24
Plane Finder
FlightAware