I'm having the same problem with radar. Plus two other problems;

1. Satellite images do not appear (but baseman does),
2. Particle animation does not update when timeline is moved.

These problems began after updating to Sonoma. Rebooting computer resolves the problems temporarily, but they soon return.

Working ok with Firefox & Chrome.

MacBook Pro w/Sonoma 14.5
Safari 17.5
Windy.com 42.3.1