The SummaryTyphoon Sam (international code 199908) is a 1999 Northwest Pacific typhoon; peak intensity Typhoon, max wind 38m/s, minimum central pressure 980hPa, not in China Landfall, 1999-08-23 was numbered off, recording 23 track points.
Typhoon Sam, international code 199908, international name SAM, 1999 Northwest Pacific typhoon. Formed: 1999-08-17 18:00:00, ended: 1999-08-23 06:00:00. Peak intensity: Typhoon , minimum central pressure: 980 hPa, max wind: 38m/s.
Typhoon Sam at 1999-08-17 18:00:00 at 11°N, 128.3°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Typhoon intensity with max winds of 38 m/s (~137 km/h) and a minimum central pressure of 980hPa, recorded at 1999-08-22 06:00:00.
1999-08-23 06:00:00 After, Typhoon Sam gradually weakened and was numbered off on 1999-08-23 06:00:00 was numbered off; its lifecycle recorded 23 track points.
Typhoon Sam (199908) 的生命史始 at Northwest Pacific洋面, 整体路径呈现稳定的NW toward MovingTrend, 未出现明显的转 toward 或回旋现象. formed初期 (8月17日18时) , 系统位 at 11°N, 128.3°E附近, 随后持续 toward NW direction推进. 在8月18日至19日期间, Typhoon 中心The latitude从11.4°N迅速N抬至17°N, During则由128.9°EW移至124.7°E, 显示出较强的 toward W分量. Go to 8月20日后, Moving路径逐渐转为更N的 direction, 纬度由18.4°N升至21.8°N, 而经度继续W进至115°E. 直至消散前 (8月23日06时) , 系统最终到达24°N, 112.6°E. 全生命周期内, 该Typhoon 始终保持NW行进路线, 穿Vietnam海N部海域, 全程无Landfall记录, 最终在接近China大陆coastal 但未上岸的情况下减弱消散.
Sam的Intensity演变经历了典型的“ formed-加强-巅峰-减弱”过程. 初始阶段为Nameless, wind speed仅为7m/s. 经过约36h的缓慢增强, at 8月19日12时升级为Tropical Storm (20m/s) . 随后Go to 快速增强期, 8月20日00时达到Severe Tropical Storm级别 (25m/s) , 并维持该Intensity约30h. 8月21日06时, 系统进一步发展为Typhoon , max wind 达到33m/s. 巅峰状态出现在8月22日06时, 此时中心位 at 22.1°N, 114.6°E, max wind 增至38m/s. 值得注意的是, 巅峰维持Time较短, 仅6h后wind speed即回落至33m/s. 8月22日18时起, 系统迅速 weakened into Tropical Storm (20m/s) , 并 at 次日凌晨降级为Nameless, 最终在8月23日06时以12m/s的wind speed结束生命史. 相较 at 其他同名Typhoon , 本次Sam虽达到Typhoon 级Intensity, 但巅峰wind speed38m/s属 at 中等IntensityTyphoon 范畴, 且由 at 未Landfall, 其破坏力主要局限 at 海上风浪影响.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1999-08-17 18:00:00 | 11°N | 128.3°E | Nameless | 7 | 1004 | |
| 1999-08-18 06:00:00 | 12.4°N | 128.9°E | Nameless | 15 | 1004 | |
| 1999-08-18 18:00:00 | 14.6°N | 127.6°E | Nameless | 15 | 1004 | |
| 1999-08-19 06:00:00 | 16.9°N | 125.5°E | Nameless | 17 | 998 | |
| 1999-08-19 18:00:00 | 17.2°N | 123.5°E | Tropical Storm | 23 | 992 | |
| 1999-08-20 06:00:00 | 18.4°N | 121.1°E | Severe Tropical Storm | 28 | 990 | |
| 1999-08-20 18:00:00 | 18.6°N | 119.6°E | Severe Tropical Storm | 28 | 985 | |
| 1999-08-21 06:00:00 | 19.8°N | 117.7°E | Typhoon | 33 | 980 | |
| 1999-08-21 18:00:00 | 21.1°N | 115.8°E | Typhoon | 33 | 980 | |
| 1999-08-22 06:00:00 | 22.1°N | 114.6°E | Typhoon | 38 | 980 | |
| 1999-08-22 18:00:00 | 23.2°N | 113.2°E | Tropical Storm | 20 | 994 | |
| 1999-08-23 06:00:00 | 24°N | 112.6°E | Nameless | 12 | 1004 |
Sampled rows shown; all 23 track points are available on the interactive map or via the public API .
International code for Typhoon Sam is 199908, is 1999 Typehoon number 8, international name SAM.
Typhoon Sam peak intensity is Typhoon , max wind 38m/s, minimum central pressure 980 hPa.
According to records, Typhoon Sam is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Sam's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/199908.
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