The SPIS31 TTAAii Data Designators decode as: T1 (S): Surface data T1T2 (SP): Special aviation weather reports A1A2 (IS): Israel (Remarks from Volume-C: NilReason)
The SPIS31 TTAAii Data Designators decode as: T1 (S): Surface data T1T2 (SP): Special aviation weather reports A1A2 (IS): Israel (Remarks from Volume-C: NilReason)