The people of Aljunied had defied god and voted for another god. It is time for them to repent for the next 5 years. The first sign of god's anger is here...hot weather. And the people shall bear with the heat.
Altogether there shall be 7 signs, 6 more to go. Flooding is likely to be next. The third sign must be swarms of locusts, in the image of man.