47 CFR § 10.11
WEA implementation timeline
February 16, 2021
Notwithstanding anything in this part to the contrary, a participating CMS provider shall begin an 18 month period of development, testing and deployment of the WEA in a manner consistent with the rules in this part no later than 10 months from the date that the Federal Alert Aggregator and Alert Gateway makes the Government Interface Design specifications available.
[78 FR 16807, Mar. 19, 2013]