Examples of significant weather phenomena:<br/>    - Obscured thunderstorm (OBSC_TS)<br/>    - Obscured thunderstorm with hail (OBSC_TSGR)<br/>    - Embedded thunderstorm (EMBD_TS)<br/>    - Embedded thunderstorm with hail (EMBD_TSGR)<br/>    - Frequent thunderstorm (FRQ_TS)<br/>    - Frequent thunderstorm with hail (FRQ_TSGR)<br/>    - Squall line (SQL_TS)<br/>    - Squall line with hail (SQL_TSGR)<br/>    - Tropical cyclone (TC)<br/>    - Severe turbulence (SEV_TURB)<br/>    - Severe airframe icing (SEV_ICE)<br/>    - Severe airframe icing from freezing rain (SEV_ICE_FZRA)<br/>    - Severe mountain wave (SEV_MTW)<br/>    - Heavy dust storm (HVY_DS)<br/>    - Heavy sand storm (HVY_SS)<br/>    - Volcanic ash (VA)<br/>    - Radioactive cloud (RDOACT_CLD)<br/>