The SummaryTyphoon Iris (international code 197308) is a 1973 Northwest Pacific typhoon; peak intensity Severe Typhoon, max wind 43m/s, minimum central pressure 970hPa, not in China Landfall, 1973-08-20 was numbered off, recorded 48 track points.
Typhoon Iris, international code 197308, international name IRIS, 1973 Northwest Pacific typhoon. Formed: 1973-08-09 00:00:00, ended: 1973-08-20 18:00:00. Peak intensity: Severe Typhoon, minimum central pressure: 970 hPa, max wind: 43m/s.
Typhoon Iris at 1973-08-09 00:00:00 at 17.1°N, 132.4°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Severe Typhoon intensity with max winds of 43 m/s (~155 km/h) and a minimum central pressure of 970hPa, recorded at 1973-08-13 06:00:00.
1973-08-20 18:00:00 After, Typhoon Iris gradually weakened and was numbered off on 1973-08-20 18:00:00 was numbered off; its lifecycle recorded 48 track points.
Typhoon Iris (197308) 的生命史始 at Northwest Pacific洋面, 整体路径呈现典型的“先NW后NE”的抛物线型Moving特征. formed初期 (8月9日至11日) , 系统自17.1°N, 132.4°E toward NW direction稳定Moving, The latitude快速提升至23.2°N, During略微W移. 8月12日至13日期间, Typhoon 在23°N附近出现短暂的停滞与回旋, 经度基本维持在130.8°E至131.7°E之间, 随后开始 toward E折返, 标志着路径转折点的形成.
After August 15, influenced by the mid-high-latitude W-band guided airflow, Typhoon accelerated toward NE. From 28.1°N, 129.4°E quickly moved to 35.3°N, 125.4°E, completing the main turn toward process. Go to High-latitude waters after, the path further toward E extended, eventually dispersed at August 20, 18 at 47°N, 177°E near the open ocean surface.
在Intensity变化方面, Iris经历了完整的 formed, 发展, 巅峰及衰减过程. 初始阶段为Nameless, wind speed12m/s; 经过约48h的快速增强, at 8月11日发展为Severe Tropical Storm (28m/s) , 并 at 次日升级为Typhoon . 8月13日至14日, Typhoon 达到peak intensity, max wind 录得43m/s, 维持Severe Typhoon级别. 此后, 随着The latitude升高及海温降低, 系统Intensity逐渐减弱. 8月15日至16日wind speed降至35m/s, 8月17日进一步 weakened into Tropical Storm (23m/s) , 最终在N上过程中降级为Nameless并消散.
Compared to the previous typhoon, the 1973 Iris peak intensity (Severe Typhoon, 43m/s) was at a medium level. compared to the 1970 Iris (Super Typhoon) and the 1976 Iris (all Typhoon) in 1964, its intensity was slightly weaker; but significantly strong at the 1967 Iris (to the Tropical Storm level only).
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1973-08-09 00:00:00 | 17.1°N | 132.4°E | Nameless | 12 | 1004 | |
| 1973-08-09 18:00:00 | 19.2°N | 131.3°E | Nameless | 15 | 1002 | |
| 1973-08-10 12:00:00 | 22.2°N | 131°E | Tropical Storm | 20 | 1000 | |
| 1973-08-11 06:00:00 | 23.4°N | 131.1°E | Severe Tropical Storm | 28 | 990 | |
| 1973-08-12 00:00:00 | 23.1°N | 130.8°E | Typhoon | 33 | 980 | |
| 1973-08-12 18:00:00 | 23.1°N | 131.5°E | Typhoon | 38 | 975 | |
| 1973-08-13 12:00:00 | 23.6°N | 132.3°E | Severe Typhoon | 43 | 970 | |
| 1973-08-14 06:00:00 | 25.4°N | 131.7°E | Typhoon | 38 | 970 | |
| 1973-08-15 00:00:00 | 28.1°N | 129.4°E | Typhoon | 35 | 975 | |
| 1973-08-15 18:00:00 | 29.8°N | 126.9°E | Typhoon | 38 | 975 | |
| 1973-08-16 12:00:00 | 32.4°N | 125.1°E | Severe Tropical Storm | 30 | 975 | |
| 1973-08-17 06:00:00 | 37.3°N | 126.2°E | Nameless | 17 | 985 | |
| 1973-08-18 00:00:00 | 41.8°N | 132.6°E | Nameless | 17 | 992 | |
| 1973-08-18 18:00:00 | 43.8°N | 145°E | Nameless | 15 | 992 | |
| 1973-08-19 12:00:00 | 44°N | 157°E | Nameless | 17 | 996 | |
| 1973-08-20 06:00:00 | 44.4°N | 168.8°E | Nameless | 17 | 1000 | |
| 1973-08-20 18:00:00 | 47°N | 177°E | Nameless | 17 | 1000 |
Sampled rows shown; all 48 track points are available on the interactive map or via the public API .
International code for Typhoon Iris is 197308, is 1973 number 8 Typhoon, international name IRIS.
Typhoon Iris peak intensity is Severe Typhoon, max wind 43m/s, minimum central pressure 970 hPa.
According to records, Typhoon Iris is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Iris' Track history map, multinational meteorological agency Forecast comparison, wind circle range and IntensityTrend, page address: https://taifengshuo.com/typhoon/197308.
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