The SummaryTyphoon Harriet (international code 197409) is a 1974 Northwest Pacific typhoon; peak intensity Tropical Storm, max wind 23m/s, minimum central pressure 996hPa, not in China Landfall, 1974-07-20 was numbered off, recording 27 track points.
Typhoon Harriet, international code 197409, international name HARRIET, 1974 Northwest Pacific typhoon. Formed: 1974-07-14 00:00:00, ended: 1974-07-20 12:00:00. Peak intensity: Tropical Storm, minimum central pressure: 996 hPa, max wind: 23m/s.
Typhoon Harriet at 1974-07-14 00:00:00 at 11.9°N, 144°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Tropical Storm intensity with max winds of 23 m/s (~83 km/h) and a minimum central pressure of 996hPa, recorded at 1974-07-15 18:00:00.
1974-07-20 12:00:00 After, Typhoon Harriet gradually weakened and was numbered off on 1974-07-20 12:00:00 was numbered off; its lifecycle recorded 27 track points.
Typhoon Harriet (197409) 的生命史始 at Northwest Pacific远洋海域, 整体路径呈现典型的“NW行-转 toward NE”的抛物线形态. formed初期 (7月14日至15日) , 系统自11.9°N, 144°E附近 toward NW direction稳定Moving, The latitude迅速N抬至19.2°N, DuringW移约6.3度, 显示出受副热带高压S侧引导气流影响的显著特征. 7月16日凌晨, 当系统Moving至21.2°N, 135.4°E时达到最W端Position, 随后路径发生关键转折. 从7月16日中午开始, Moving direction逐渐由NW转为N, 进而转 toward NE. 特别是在7月18日后, 系统在29°N附近纬度带停滞并大幅E移, 经度从135.2°E快速拉升至150°E, 表明其已完全Go to W风带控制区域, 受高空槽前SW气流引导加速 toward E远离陆地. 全生命周期内无Landfall记录, 始终在海上活动.
在Intensity变化方面, Harriet表现为“快速增强-短暂巅峰-持续减弱”的特征. 系统初始为Nameless, wind speed12m/s, 在 toward NWMoving过程中迅速加强, at 7月15日中午升级为Tropical Storm, 并在7月16日00:00达到peak intensity, max wind 录得23m/s. 然而, 其巅峰状态维持Time极短, 仅12h后wind speed即回落至20m/s, 并 at 7月17日凌晨降级为Nameless. 此后, 随着系统N上Go to 高The latitude海域, intensity 持续衰减, wind speed长期维持在10-12m/s的Nameless下限水平, 直至消散.
Data show that the same name Typhoon Harrietpeak intensity in 1965, 1967 and 1971 reached the 'Super Typhoon' level, while in 1974 Harriet only reached the 'Tropical Storm' level, max wind 23m/s far below the Typhoon standard (≥32.7m/s) .
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1974-07-14 00:00:00 | 11.9°N | 144°E | Nameless | 12 | 1010 | |
| 1974-07-14 12:00:00 | 14°N | 142.1°E | Nameless | 15 | 1008 | |
| 1974-07-15 00:00:00 | 17°N | 140.1°E | Nameless | 15 | 1002 | |
| 1974-07-15 12:00:00 | 19.2°N | 137.7°E | Tropical Storm | 20 | 996 | |
| 1974-07-16 00:00:00 | 21.2°N | 135.4°E | Tropical Storm | 23 | 996 | |
| 1974-07-16 12:00:00 | 23.2°N | 133.5°E | Tropical Storm | 20 | 998 | |
| 1974-07-17 00:00:00 | 25.4°N | 132.8°E | Nameless | 17 | 1002 | |
| 1974-07-17 12:00:00 | 27.6°N | 133.1°E | Nameless | 12 | 1006 | |
| 1974-07-18 00:00:00 | 29°N | 135.2°E | Nameless | 10 | 1006 | |
| 1974-07-18 12:00:00 | 29.1°N | 138.2°E | Nameless | 12 | 1006 | |
| 1974-07-19 00:00:00 | 29°N | 141.4°E | Nameless | 10 | 1006 | |
| 1974-07-19 12:00:00 | 28°N | 145°E | Nameless | 10 | 1008 | |
| 1974-07-20 00:00:00 | 27.2°N | 147.8°E | Nameless | 10 | 1006 | |
| 1974-07-20 12:00:00 | 27.2°N | 150°E | Nameless | 10 | 1006 |
Sampled rows shown; all 27 track points are available on the interactive map or via the public API .
Typhoon Harriet's international code is 197409, is 1974's 9th Typhoon, international name HARRIET.
Typhoon Harriet peak intensity is Tropical Storm, max wind 23m/s, minimum central pressure 996 hPa.
According to records, Typhoon Harriet is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Harriet's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197409.
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