The SummaryTyphoon Joan (international code 199721) is a 1997 Northwest Pacific typhoon; peak intensity Super Typhoon, max wind 82m/s, minimum central pressure 905hPa, not in China Landfall, 1997-10-25 was numbered off, recording 58 track points.
Typhoon Joan, international code 199721, international name JOAN, 1997 Northwest Pacific typhoon. Formed: 1997-10-11 00:00:00, ended: 1997-10-25 06:00:00. Peak intensity: Super Typhoon, minimum central pressure: 905 hPa, max wind: 82m/s.
Typhoon Joan at 1997-10-11 00:00:00 at 3.8°N, 178.6°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Super Typhoon intensity with max winds of 82 m/s (~295 km/h) and a minimum central pressure of 905hPa, recorded at 1997-10-17 06:00:00.
Typhoon Joan gradually weakened and was numbered off on 1997-10-25 06:00:00 was numbered off; its lifecycle recorded 58 track points.
Typhoon Joan (199721) 的生命史始 at Northwest Pacific远洋海域, 整体路径呈现典型的“W行—NW行—转 toward NE”的抛物线形态. formed初期 (10月11日至14日) , 系统位 at 低The latitude海域 (3.8°N-12.3°N) , 受副热带高压S侧引导气流影响, 稳定 toward WN, During从178.6°E迅速W移至165.5°E. 10月15日至10月21日期间, Typhoon 维持NW toward MovingTrend, 纬度由13.4°N攀升至23.2°N, 期间在10月21日附近达到路径最W端 (136.9°E) , 随后路径曲率发生显著变化. 10月22日起, 系统开始明显转 toward NE, 经度由141.1°E快速E扩至178.5°E, 纬度持续N抬至36.4°N, 最终在高纬度远洋海域减弱消散. 全生命周期内无Landfall记录, 始终在开阔洋面上活动.
Joan's Intensity evolution underwent a slow enhancement, explosive enhancement and a gradual weakening after the long-term maintenance peak.The initial stage is Nameless, wind speed is only 7m/s. After upgrading to Severe Tropical Storm on October 15, the intensity has risen sharply, within a short 48h (October 15 to 17) wind speed jumped from 25m/s to 71m/s, establishing the Super Typhoon status.It is worth noting that the system hasined for up to 6 days at the Super Typhoon level (October 17 to 22), the peak speedwind reaches 82m/s, showing strong core stability and energy maintenance.
In 1973, Joan peaked only for Tropical Storm, in 1964 and in 1962 Joan peaked for Typhoon level, did not meet the Super Typhoon standard. only in 1970 Joan had reached Super Typhoon level, but in 1997 Joan with 82m/s extremely wind speed and a week of Super Typhoon maintenance Time, in the 'Joan' family showed more extreme and lasting destruction potential, is one of the most representative Severe Typhoon cases in history.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1997-10-11 00:00:00 | 3.8°N | 178.6°E | Nameless | 7 | - | |
| 1997-10-11 18:00:00 | 6.1°N | 173.6°E | Nameless | 10 | - | |
| 1997-10-12 12:00:00 | 9.1°N | 169.3°E | Nameless | 12 | - | |
| 1997-10-13 06:00:00 | 11.4°N | 167.4°E | Nameless | 12 | 1008 | |
| 1997-10-14 00:00:00 | 12.3°N | 165.5°E | Nameless | 15 | 1004 | |
| 1997-10-14 18:00:00 | 13.2°N | 162.4°E | Tropical Storm | 23 | 996 | |
| 1997-10-15 12:00:00 | 13.4°N | 159.4°E | Severe Tropical Storm | 30 | 985 | |
| 1997-10-16 06:00:00 | 13.6°N | 155.9°E | Super Typhoon | 53 | 955 | |
| 1997-10-17 00:00:00 | 14.2°N | 151.6°E | Super Typhoon | 71 | 930 | |
| 1997-10-17 18:00:00 | 15.3°N | 147.1°E | Super Typhoon | 71 | 905 | |
| 1997-10-18 12:00:00 | 17°N | 143.1°E | Super Typhoon | 77 | 910 | |
| 1997-10-19 06:00:00 | 18.5°N | 139.7°E | Super Typhoon | 71 | 910 | |
| 1997-10-20 00:00:00 | 20.1°N | 137.4°E | Super Typhoon | 71 | 915 | |
| 1997-10-20 18:00:00 | 22.3°N | 136.6°E | Super Typhoon | 71 | 930 | |
| 1997-10-21 12:00:00 | 25°N | 138.3°E | Super Typhoon | 66 | 935 | |
| 1997-10-22 06:00:00 | 28.1°N | 143.1°E | Super Typhoon | 56 | 955 | |
| 1997-10-23 00:00:00 | 29.5°N | 150.1°E | Severe Typhoon | 48 | 970 | |
| 1997-10-23 18:00:00 | 29.9°N | 158°E | Severe Typhoon | 43 | 980 | |
| 1997-10-24 12:00:00 | 30.1°N | 167.6°E | Typhoon | 38 | 990 | |
| 1997-10-25 06:00:00 | 36.4°N | 178.5°E | Severe Tropical Storm | 30 | - |
Sampled rows shown; all 58 track points are available on the interactive map or via the public API .
Typhoon Joan's international code is 199721, is 1997 number 21 Typhoon, international name JOAN.
Typhoon Joan peak intensity is Super Typhoon, max wind 82m/s, minimum central pressure 905 hPa.
According to records, Typhoon Joan is not in our coastal Landfall.
TyphoonSays (taifengshuo.com) provides typhoon Joan's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/199721.
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