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WSRS31 RUSP 231407

ULLL SIGMET 13 VALID 231500/231800 ULLI-
ULLL SANKT-PETERBURG FIR SEV TURB FCST S OF LINE N8000 E03500 - N7800
E06000 - N6933 E06624 AND NE OF LINE N7720 E03500 - N7543 E04958 -
N6000 E05000 FL270/400 STNR NC=