Skip Content

Tropical Cyclones in 2023 > Table 4.12

Tropical Cyclones in 2023

Table 4.12     Verification of the tropical cyclone forecast tracks issued by the Hong Kong Observatory in 2023 (Error in the unit of km)

Name of tropical cyclone Code Maximum Intensity 24-hour forecast position 48-hour forecast position 72-hour forecast position 96-hour forecast position 120-hour forecast position
Average error No. of forecasts Average error No. of forecasts Average error No. of forecasts Average error No. of forecasts Average error No. of forecasts
Mawar 2302 SuperT. 39 28 123 24 223 20 329 16 436 12
Guchol 2303 T. 45 24 90 20 167 16 247 12 373 8
Talim 2304 T. 41 15 57 11 91 7 186 3 - -
Doksuri 2305 SuperT. 48 30 72 26 117 22 167 18 165 14
Khanun 2306 SuperT. 58 57 100 54 159 50 261 46 450 37
Lan 2307 S.T. 37 12 60 10 63 6 101 2 - -
Saola 2309 SuperT. 65 39 122 35 173 31 241 27 334 23
Haikui 2311 S.T. 119 28 260 24 441 20 692 16 1073 12
Kirogi 2312 S.T.S. - - - - - - - - - -
Yun-yeung 2313 T.S. 198 14 336 10 551 6 912 2 - -
Koinu 2314 S.T. 60 38 108 34 126 30 123 26 137 22
Sanba 2316 T.S. 91 10 213 6 306 2 - - - -
Jelawat 2317 T.D. 288 3 - - - - - - - -
Tropical Depression
(11 - 12 Apr)		 - T.D. 121 1 - - - - - - - -
Tropical Depression
(25 - 26 Sep)		 - T.D. 76 1 - - - - - - - -
Average Error 70 126 193 278 397
Total number of forecasts 300 254 210 168 128

Note:
1. Verification includes tropical cyclone forecast tracks issued by the Hong Kong Observatory at 00, 06, 12 and 18 UTC for tropical cyclones within the area bounded by 7°N and 36°N, 100°E to 140°E.
2. Error refers to the distance between the tropical cyclone best track position (see Section 5) and forecast position of the Hong Kong Observatory, in the unit of km.