Message to World Magnetic Model

...This performance degradation is caused by fast changing core flows in the North polar region of the Earth’s outer core.

Wow interesting stuff. NOAA's modelling is not able to keep pace with real world observations. Not having a dig here just WOW.

Basically the real world North Pole magnetic declination since 2015 is not matching what the models consider normal.

https://www.ngdc.noaa.gov/geomag/WMM/data/WMMReports/WMM2015_Performance_White_Paper_Short.pdf