Intensity (ten-minute mean)
天鴿 Hato
- Peak wind
- 139km/h
- Lowest pressure
- 965hPa
- Closest approach
- about 60km south-south-east
- Warnings and signals
- Hurricane Signal No. 10
- Mean peak, reference stations
- 74.2km/h
- Waglan Island
- not recorded
These reference values come from station measurements, not replay-model estimates. Averaging periods follow the original case reports and are not directly comparable with the replay’s ten-minute model estimates. Station surroundings can also produce large differences in readings.
Intensified quickly over the South China Sea and struck the western side of the Pearl River Estuary head-on. Its storm surge set records.
Satellite image 23 Aug 2017 · VIIRS
Track timeline
Track timeline- 65 km/h998 hPa
- 65 km/h994 hPa
- 83 km/h985 hPa
- 120 km/h970 hPa
- 93 km/h985 hPa
- 65 km/h996 hPa
Full track
Full trackA best track is after-the-fact reanalysis, not what was forecast at the time. All times UTC+8.
| Time | Position | Pressure | Wind |
|---|---|---|---|
| 20 Aug 20:00 | 19.7°N 126.9°E | 998 hPa | 65 km/h |
| 21 Aug 02:00 | 19.9°N 126.2°E | 996 hPa | 65 km/h |
| 21 Aug 08:00 | 20.2°N 125.4°E | 994 hPa | 65 km/h |
| 21 Aug 14:00 | 20.3°N 124.3°E | 994 hPa | 65 km/h |
| 21 Aug 20:00 | 20.6°N 123.2°E | 990 hPa | 74 km/h |
| 22 Aug 02:00 | 20.5°N 121.5°E | 990 hPa | 74 km/h |
| 22 Aug 08:00 | 20.5°N 119.8°E | 985 hPa | 83 km/h |
| 22 Aug 14:00 | 20.5°N 118.8°E | 975 hPa | 111 km/h |
| 22 Aug 20:00 | 20.6°N 117.3°E | 975 hPa | 111 km/h |
| 23 Aug 02:00 | 21.1°N 116.0°E | 970 hPa | 120 km/h |
| 23 Aug 08:00 | 21.6°N 114.4°E | 965 hPa | 139 km/h |
| 23 Aug 14:00 | 22.3°N 112.8°E | 965 hPa | 139 km/h |
| 23 Aug 20:00 | 22.7°N 111.0°E | 985 hPa | 93 km/h |
| 24 Aug 02:00 | 23.5°N 109.1°E | 994 hPa | 74 km/h |
| 24 Aug 08:00 | 23.9°N 107.5°E | 996 hPa | 65 km/h |
| 24 Aug 14:00 | 23.9°N 106.1°E | 996 hPa | 65 km/h |
| 24 Aug 20:00 | 23.8°N 104.5°E | 998 hPa | — |
Further reading
- What an ensemble forecast is, and what it is not
A spray of tracks is a statement about uncertainty, not a menu of outcomes.
- Hong Kong's typhoon signals, explained
What each of the five levels means in wind speed, and why the No. 8 comes in four directions.
- Why a storm to the south brings easterly winds
Cyclones spin anticlockwise north of the equator, so the wind where you stand depends on which side of the storm you are on.