WSER20 OMAA 250640 OMAE SIGMET 4 VALID 250642/250815 OMAA- OMAE EMIRATES FIR OBSC TS OBS WI N2440 E05240 - N2520 E05310 - N2500 E05400 - N2420 E05340 - N2440 E05240 TOP ABV FL440 MOV E NC=