Dyma’r pedair lefel rhybudd:Lefel rhybudd 1 (risg isel): Dyma’r lefel cyfyngiadau agosaf at normalrwydd sy’n bosibl tra mae cyfraddau heintio yn isel a mesurau ataliol eraill yn parhau ar waith, megis cadw pellter cymdeithasol a gweithio gartref.Lefel rhybudd 2 (risg ganolig): Mae’r lefel hon yn cynnwys mesurau rheoli ychwanegol i gyfyngu ar ledaeniad y coronafeirws. Gall y rhain gael eu hategu gan gamau gweithredu lleol wedi’u targedu’n fwy, a roddir ar waith i reoli achosion lluosog neu frigiadau penodol.Lefel rhybudd 3 (risg uchel): Dyma’r cyfyngiadau llymaf heblaw am gyfnod atal byr neu gyfnod clo. Maent yn ymateb i lefelau heintio uwch neu gynyddol lle nad yw camau gweithredu lleol yn effeithiol mwyach o ran cyfyngu ar dwf y feirws.Lefel rhybudd 4 (risg uchel iawn): Byddai cyfyngiadau ar y lefel hon yn cyfateb i reoliadau’r cyfnod atal byr neu’r cyfnod clo. Gellid defnyddio’r rhain naill ai fel cyfnod atal byr neu fel cyfnod clo.
The four alert levels are:Alert level one (low risk): This represents the level of restrictions closest to normality, which are possible while infection rates are low and other preventative measures, such as social distancing and working from home, remain in place.Alert level two (medium risk): This includes additional controls to limit the spread of coronavirus. These may be complemented by more targeted local actions to manage specific incidents or outbreaks.Alert level three (high risk): These represent the strictest restrictions short of a firebreak or lockdown. These respond to higher or rising level of infections where local actions are no longer effective in containing the growth of the virus.Alert level four (very high risk): Restrictions at this level would be equivalent to the firebreak regulations or lockdown. These could either be deployed as a preventative firebreak or as a lockdown measure.