Wasn't it just the threat (I.e. prediction of wind) of ash towards the airport? That chance is really small.
Bring your wallet!A distant memory at this point; old age has its short list of advantages. On the horizon for late afternoon today is a trek to Bandar Jakarta, Ancol for a flopping fresh seafood dinner .... with 30 or so family members in tow. Should be fun, if the traffic from Jaktim north is not too bad.
Another eruption, complete with lava and fire: