WSUK31 EGRR 031956
EGTT SIGMET 06 VALID 032000/032400 EGRR-
EGTT LONDON FIR SEV TURB FCST WI N4929 W00643 - N5009 W00633 - N4943
W00327 - N4914 W00555 - N4929 W00643 FL180/280 MOV E 10KT WKN=