The SummaryTyphoon Ian (international code 198715) is a 1987 Northwest Pacific typhoon; peak intensity Super Typhoon, max wind 56m/s, minimum central pressure 955hPa, not in China Landfall, 1987-10-04 was numbered off, recording 47 track points.
Typhoon Ian, international code 198715, international name IAN, 1987 Northwest Pacific typhoon. Formed: 1987-09-22 12:00:00, ended: 1987-10-04 00:00:00. Peak intensity: Super Typhoon, minimum central pressure: 955 hPa, max wind: 56m/s.
Typhoon Ian at 1987-09-22 12:00:00 at 16.2°N, 148.2°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Super Typhoon intensity with max winds of 56 m/s (~202 km/h) and a minimum central pressure of 955hPa, recorded at 1987-09-26 00:00:00.
Typhoon Ian gradually weakened and was numbered off on 1987-10-04 00:00:00 was numbered off; its lifecycle recorded 47 track points.
Typhoon Ian (198715) 的生命史始 at Northwest Pacific远洋海域, 整体路径呈现典型的“NW行-N转-NE移”抛物线形态. formed初期 (9月22日至24日) , 系统在16°N附近维持Nameless至Tropical StormIntensity, Moving direction主要为W toward , During从148.2°E缓慢W移至143.8°E. 随后, 受引导气流影响, 路径逐渐转为NW direction, The latitude快速提升至23°N附近.
The data showed that when the Center reached about 23.3°N, 138°E, the system Moving speed slowed significantly, the length changes were small, marking its shift from NW to toward N and toward N to NE. Since then, the Typhoon accelerated along Japan toward NE in the ocean, and finally at October 4 at 38.1°N, 158.8°E weakened into Nameless and ended observations.
Ian's Intensity evolution has experienced rapid enhancement, peak maintenance and gradual weakening in three phases. starting from the September 24th Tropical Storm (23m/s), the system has rapidly strengthened within 48h, and has reached Severe Typhoon level (46m/s) until September 25th at 12h . on September 26th at 6am, at the center at 21.3°N, 140.3°E, at the peak of life, confirmed as Super Typhoon, max wind recorded 56m/s.
After September 27, as the latitude increases and possible vertical wind shifts affect, the intensity gradually decreases, from Severe Typhoon to Typhoon, and then to Severe Tropical Storm. It is worth noting that between September 30 and October 1, although the latitude continues to rise, but the intensity is stable in the range of 25-30m/s, showing certain resilience. After October, the system further weakened into Tropical Storm and Nameless, until dispersed.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1987-09-22 12:00:00 | 16.2°N | 148.2°E | Nameless | 12 | - | |
| 1987-09-23 06:00:00 | 16.2°N | 146.8°E | Nameless | 12 | 1006 | |
| 1987-09-24 00:00:00 | 16.3°N | 145.5°E | Tropical Storm | 23 | 1000 | |
| 1987-09-24 18:00:00 | 17.8°N | 143.8°E | Severe Tropical Storm | 30 | 985 | |
| 1987-09-25 12:00:00 | 19.3°N | 142.1°E | Severe Typhoon | 46 | 965 | |
| 1987-09-26 06:00:00 | 21.3°N | 140.3°E | Super Typhoon | 53 | 955 | |
| 1987-09-27 00:00:00 | 23.1°N | 138.6°E | Severe Typhoon | 46 | 955 | |
| 1987-09-27 18:00:00 | 23.3°N | 138°E | Severe Typhoon | 43 | 960 | |
| 1987-09-28 12:00:00 | 23.6°N | 138°E | Typhoon | 35 | 960 | |
| 1987-09-29 06:00:00 | 23.9°N | 137.5°E | Typhoon | 33 | 965 | |
| 1987-09-30 00:00:00 | 24.2°N | 136.9°E | Severe Tropical Storm | 30 | 975 | |
| 1987-09-30 18:00:00 | 25.3°N | 137.1°E | Severe Tropical Storm | 28 | 980 | |
| 1987-10-01 12:00:00 | 27°N | 139.4°E | Severe Tropical Storm | 25 | 985 | |
| 1987-10-02 06:00:00 | 29.6°N | 142.7°E | Tropical Storm | 23 | 992 | |
| 1987-10-03 00:00:00 | 32.1°N | 148.5°E | Tropical Storm | 20 | 992 | |
| 1987-10-03 18:00:00 | 35.1°N | 156.6°E | Nameless | 15 | 992 | |
| 1987-10-04 00:00:00 | 38.1°N | 158.8°E | Nameless | 12 | 994 |
Sampled rows shown; all 47 track points are available on the interactive map or via the public API .
Typhoon Ian's international code is 198715, is 1987's 15th Typhoon, international name IAN.
Typhoon Ian peak intensity is Super Typhoon, max wind 56m/s, minimum central pressure 955 hPa.
According to records, Typhoon Ian is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Ian's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/198715.
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