said by alphapointe :

Atomic watches and clocks set their time via WWVB, a 60khz signal. The news item is referring to the AM stations in the shortwave bands, like WWV at 2.5, 5, 10, 15, and 20MHz.

This will not affect atomic clocks/watches at all.

EDIT:
Here is WWV's web site:
»tf.nist.gov/stations/wwv.html