On almost every day at every every airport in Asia during the summer there are warnings of "Windshear all runways". This is not unusual and rarely disrupts the normal pattern of take off and landings.
The difference is when you see a major storm on radar close to your approach and landing area. I have been on the ground in Phuket (actually on a boat to the east of the island) when, on the approach of a thunderstorm, the wind increased from zero to sixty knots over the deck in a period of ninety seconds. The squall lasted for forty five minutes at this intensity with blinding torrential rain and zero visibilty. Bad time to be on approach!