Forecast Air Trajectory

Forecast trajectory of air which reach
Hong Kong at

Data not available

• Past Backward Trajectory Map

This webpage shows the 72-hour trajectory of the forecast movement of the air reaching Hong Kong at a height of 100 metres above ground level ending at 8 a.m. or 8 p.m. of the next 2 to 3 days.
The product may be useful for tracing the origin of air reaching Hong Kong.

Points to note:

• Normally, this web page will be updated daily at around 2 a.m. and 2 p.m.
• The trajectory was prepared using the This link will open in a new windowHYSPLIT model of NOAA and output from numerical weather prediction models.

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