The SummaryTyphoon Emma (international code 197711) is a 1977 Northwest Pacific typhoon; peak intensity Severe Tropical Storm, max wind 30m/s, minimum central pressure 965hPa, not in China Landfall, 1977-09-20 was numbered off, recording 21 track points.
Typhoon Emma, international code 197711, international name EMMA, 1977 Northwest Pacific typhoon. Formed: 1977-09-15 06:00:00, ended: 1977-09-20 06:00:00. Peak intensity: Severe Tropical Storm, minimum central pressure: 965 hPa, max wind: 30m/s.
Typhoon Emma at 1977-09-15 06:00:00 at 21.2°N, 143.4°E over the Northwest Pacific; initial intensity: Tropical Storm.
It peaked at Severe Tropical Storm intensity with max winds of 30 m/s (~108 km/h) and a minimum central pressure of 965hPa, recorded at 1977-09-16 18:00:00.
1977-09-20 06:00:00 After, Typhoon Emma gradually weakened and was numbered off on 1977-09-20 06:00:00 was numbered off; its lifecycle recorded 21 track points.
Typhoon Emma (197711) 的生命史始 at Northwest Pacific洋面, 整体路径呈现显著的“先N后NE”的抛物线型Moving特征. formed初期 (9月15日06时至16日12时) , 系统主要受副热带高压S侧气流引导, 保持稳定的N, The latitude从21.2°N迅速提升至26.4°N, During变化较小, 维持在143.4°E至144.3°E之间. 9月16日18时至17日18时, Typhoon Go to 关键转折期, Moving速度减缓并在29.1°N附近达到最N端纬度, 随后路径开始 toward E偏转. 9月18日00时后, 系统彻底转 toward NE direction加速Moving, 经度从142.7°E快速E移至149.2°E, 纬度亦同步 toward N推进至42.6°N. 整个过程中, Typhoon 未Landfall任何陆地, 始终在海上活动, 最终在高纬度海域减弱消散.
在Intensity变化方面, Emma经历了一个典型的“增强-维持-减弱”过程. 初始阶段为Tropical Storm (20m/s) , 在 toward NWMoving过程中逐渐加强, at 9月16日06时升级为Severe Tropical Storm, 并在9月16日18时至17日06时期间达到peak intensity, 最大持续wind speed为30m/s. 巅峰状态维持约12h后, 随着路径转 toward NE并Go to 高The latitude冷水区及W风带, intensity 开始缓慢衰减. 9月19日00时降级为Tropical Storm, 直至9月20日06时进一步 weakened into Nameless (17m/s) .
Its peak intensity was only Severe Tropical Storm, far lower at 1967 Emma (196720) and the 1959 Emma (195912) Super Typhoon level.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1977-09-15 06:00:00 | 21.2°N | 143.4°E | Tropical Storm | 20 | 980 | |
| 1977-09-15 12:00:00 | 22.4°N | 143.8°E | Tropical Storm | 20 | 975 | |
| 1977-09-15 18:00:00 | 23.7°N | 144.1°E | Tropical Storm | 20 | 975 | |
| 1977-09-16 00:00:00 | 24.8°N | 144.3°E | Tropical Storm | 23 | 975 | |
| 1977-09-16 06:00:00 | 25.7°N | 144.3°E | Severe Tropical Storm | 25 | 975 | |
| 1977-09-16 12:00:00 | 26.4°N | 144.3°E | Severe Tropical Storm | 28 | 970 | |
| 1977-09-16 18:00:00 | 26.9°N | 144.3°E | Severe Tropical Storm | 30 | 970 | |
| 1977-09-17 00:00:00 | 27.3°N | 144.4°E | Severe Tropical Storm | 30 | 965 | |
| 1977-09-17 06:00:00 | 28.2°N | 144.5°E | Severe Tropical Storm | 30 | 970 | |
| 1977-09-17 12:00:00 | 29°N | 144.3°E | Severe Tropical Storm | 28 | 970 | |
| 1977-09-17 18:00:00 | 29.1°N | 143.6°E | Severe Tropical Storm | 28 | 970 | |
| 1977-09-18 00:00:00 | 29.1°N | 142.7°E | Severe Tropical Storm | 25 | 970 | |
| 1977-09-18 06:00:00 | 29.3°N | 141.8°E | Severe Tropical Storm | 25 | 970 | |
| 1977-09-18 12:00:00 | 29.9°N | 140.9°E | Severe Tropical Storm | 25 | 970 | |
| 1977-09-18 18:00:00 | 31°N | 140.3°E | Severe Tropical Storm | 25 | 975 | |
| 1977-09-19 00:00:00 | 32.4°N | 140.2°E | Tropical Storm | 23 | 975 | |
| 1977-09-19 06:00:00 | 33.8°N | 140.9°E | Tropical Storm | 23 | 980 | |
| 1977-09-19 12:00:00 | 35.3°N | 142.2°E | Tropical Storm | 20 | 980 | |
| 1977-09-19 18:00:00 | 37.2°N | 143.9°E | Tropical Storm | 20 | 980 | |
| 1977-09-20 00:00:00 | 39.5°N | 146°E | Tropical Storm | 20 | 980 | |
| 1977-09-20 06:00:00 | 42.6°N | 149.2°E | Nameless | 17 | - |
Typhoon Emma's international code is 197711, is the 11th Typhoon of 1977, international name EMMA.
Typhoon Emma peak intensity is Severe Tropical Storm, max wind 30m/s, minimum central pressure 965 hPa.
According to records, Typhoon Emma is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Emma's Track history map, multinational meteorological agency Forecast comparison, windshield range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197711.
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