Solarstorm hits during RNZI reception

Here is an intriguing graph from DRM Log-Plotter while I was listening to RNZI on 17675kHz tonight. You can see that "Old Mister Sun" took out a good chunk for the program, with the SNR plummeting to zero at one point. The program resumed eventually at typical SNR levels.

Ironically, New Zealand's national aircraft radar was also effected at the same time, grounding all NZ flights! Coincidence?