WSNL31 EHDB 291948 EHAA SIGMET 1 VALID 291950/292350 EHDB- EHAA AMSTERDAM FIR SEV TURB OBS AT 1930Z WI N5347 E00616 - N5320 E00711 - N5215 E00700 - N5045 E00559 - N5125 E00506 - N5347 E00616 FL340/380 STNR WKN=