Update – Magnetic declination – accelerated rate of change.
How to find your magnetic declination
The NOAA declination calculator https://www.ngdc.noaa.gov/geomag/calculators/magcalc.shtml
- Model Used: WMM2015V2
- Hoodoo South Lodge: Latitude: 44.408226° N, Longitude: 121.871883° W
- 2019-10-27 14.79° E ± 0.36° changing by 0.09° W per year
Interested in what the declination was? https://maps.ngdc.noaa.gov/viewers/historical_declination/
Converting coordinates between systems: https://geodesy.noaa.gov/NCAT/