STLV41 UMRR 010900 LATVIAN ICE REPORT 2024-03-01 AA 10//0 20//0 30//0 41000 BB 10//0 20//0 CC 10//0 20//0 30//0 PORTS OF RIGA, VENTSPILS AND LIEPAJA ARE ICE FREE. THE FAIRWAY FROM PORT OF RIGA TO LITHUANIAN BORDER IS ICE FREE, IN IRBE STRAIT IS OPEN WATER.