How geographically precise is WEA?
When the WEA program
launched, participating wireless providers were generally required to send the
alerts to a geographic area no larger than the county or counties affected by
the emergency situation. As of November 2017, all participating wireless
providers are required to transmit alerts to a geographic area that best
approximates the area affected by the emergency situation, even if it is
smaller than a county. Beginning November 30, 2019, participating wireless
providers must improve geo-targeting of alerts even further.