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WSRS31 RUSP 221624

ULLL SIGMET 20 VALID 221800/222100 ULLI-
ULLL SANKT-PETERBURG FIR SEV TURB FCST WI N7058 E04910 - N6623 E06208
- N6153 E05753 - N6610 E04028 - N6738 E04230 - N7008 E03213 - N7058
E04910 SFC/FL370 STNR NC=