SDL: Tokyo Round 3 pg 11

Quick! Can anyone name the type of bomb I was basing this type of explosion after? x'D;;

SDLT: Round 3
Cover/pg1 // [link]
pg2 // [link]
pg3 // [link]
pg4 // [link]
pg5 // [link]
pg6 // [link]
pg7 // [link]
pg8 // [link]
pg9 // [link]
pg10 // [link]
pg11 // HERE
pg12 // [link]
pg13 // [link]
pg14 // [link]
pg15 // [link]