WSBU31 LBSM 251819 LBSR SIGMET T10 VALID 251825/251940 LBSF- LBSR SOFIA FIR EMBD TS OBS AT 1819Z WI N4238 E02608 - N4341 E02610 - N4345 E02704 - N4329 E02736 - N4230 E02643 - N4238 E02608 TOP FL300 MOV NNE 10KT NC=