TROPICAL CYCLONES IN 2009
TABLE 1.4
MEANING OF ALL TROPICAL CYCLONE WARNING SIGNALS IN HONG KONG IN 2009
| Signals | Symbol Display | Meaning of the Signals | |
| Standby | 1 |  |
A tropical cyclone is centred within about 800 km of Hong Kong and may affect the territory |
| Strong Wind | 3 |  |
Strong wind is expected or blowing generally in Hong Kong near sea level, with a sustained speed of 41-62 kilometres per hour (km/h), and gusts which may exceed 110 km/h, and the wind condition is expected to persist. |
| NW' LY Gale or Storm |
8 NW |  |
Gale or storm force wind is expected or blowing generally in Hong Kong near sea level, with a sustained wind speed of 63-117 km/h from the quarter indicated and gusts which may exceed 180 km/h, and the wind condition is expected to persist. |
| SW' LY Gale or Storm |
8 SW |  |
|
| NE' LY Gale or Storm |
8 NE |  |
|
| SE' LY Gale or Storm |
8 SE |  |
|
| Increasing Gale or Storm |
9 |  |
Gale or storm force wind is increasing or expected to increase significantly in strength. |
| Hurricane | 10 |  |
Hurricane force wind is expected or blowing with sustained speed reaching upwards from 118 km/h and gusts that may exceed 220 km/h. |
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