13 canlyniad
Rhestrir y canlyniadau yn ôl perthnasedd.
Cymraeg: hysbysiad rhybuddio
Saesneg: warning notice
Cymraeg: arwydd rhybuddio
Saesneg: countdown sign
Cymraeg: hysbysiad rhybuddio
Saesneg: warning notice
Cymraeg: llythyr rhybuddio
Saesneg: warning letter
Cymraeg: hysbysiad rhybuddio am orfodi
Saesneg: enforcement warning notice
Saesneg: exceedance of the alert threshold
Cymraeg: Grŵp Rhybuddio a Llywio Cymru
Saesneg: Wales Warning and Informing Group
Cymraeg: gwasanaeth rhybuddio am lifogydd
Saesneg: flood warning service
Cymraeg: System Rhybuddio Gweithwyr Unigol
Saesneg: Lone Worker Alert System
Cymraeg: system synhwyro a rhybuddio am dân
Saesneg: fire detection and warning system
Saesneg: EU Early Warning and Response System
Saesneg: Rapid Alert System for Food and Feed
Saesneg: RASFF