Provides an overtime hourly rate of pay of one and one-half times the hourly rate of basic pay, and provides that all such pay shall be premium pay, for an employee of the National Weather Service who occupies a GS-14 nonmanagerial position that involves: (1) duties that are critical to the immediate daily operation of the forecast and warning responsibilities of the Service and that directly affect public and aviation safety; and (2) overtime work that is usually unscheduled due to the vicissitudes of severe weather and is therefore unusually taxing. Exempts such an employee from the limitation on aggregate pay, including premium pay, for a pay period.