Typhoon Joan (197013) Track Archive

1970 Typhoon Past typhoons named Joan Typhoon archive

Archive OverviewTyphoon Joan (No.197013, a pre-1981 historical number) was a 1970 Northwest Pacific typhoon. It peaked as a super typhoon, with maximum winds of 75 m/s and a minimum central pressure of 901 hPa. It did not make landfall in China and was decommissioned on October 19, 1970, with 40 track points recorded throughout its lifetime.

Identifier note: International cyclone identifiers for the Northwest Pacific have been assigned by the JMA in Japan, the regional specialized meteorological center for East Asia, since 1981. This system did not exist in 1970. The identifier 197013 is the historical number retained by the CMA. The numbers assigned that year by the JMA in Japan, the Joint Typhoon Warning Center in the United States, and China's meteorological authorities for the same typhoon could differ and cannot be directly compared.
Track data sources: China Meteorological Administration Tropical Cyclone Best Track Dataset (CMA-STI); wind speeds are 2-minute sustained wind speeds.

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Typhoon Joan trajectory analysis

Track and Movement Characteristics

Typhoon Joan (197013) 的生命史始 at Northwest Pacific远洋海域, 整体路径呈现典型的W行转NW再N上的抛物线形态. formed初期 (10月9日至11日) , 系统自E toward W快速Moving, 纬度从7.2°N缓慢上升至11.3°N, 经度由148°E大幅W移至131.7°E, 显示其受稳定E风引导气流控制. 10月12日至13日, Typhoon Go to 关键发展期, 路径略微偏 toward NW, 抵达Philippines以E洋面附近 (约125.6°E-127.8°E区间) . 随后, 系统维持W行Trend, 穿越巴士海峡W侧海域, at 10月14日至16日期间深入S海N部, 纬度逐渐N抬至18.5°N. 在生命末期 (10月17日后) , 受副热带高压边缘气流及可能的W风槽影响, Typhoon 转 toward N上并迅速减弱, 最终在Hainan岛以E海域消散. 全生命周期无Landfall记录, 主要活动范围集中在开阔洋面.

Intensity evolution and historical comparison

Joan's intensity exhibited both explosive rapid intensification and rapid decay. It took only about three days to strengthen from a tropical depression into a super typhoon, with central pressure plunging from 1004 hPa to 901 hPa and maximum winds surging to 75 m/s. Especially from October 12 to 13, its pressure fell by more than 40 hPa within 24 hours, demonstrating extraordinary explosive intensification. Its peak intensity was brief. After October 13, its intensity began fluctuating and declining as it moved closer to land and environmental conditions changed. Although it briefly remained a severe typhoon with winds of 50 m/s after entering the South China Sea, its structure gradually loosened before weakening into a tropical depression.

Compared with previous typhoons of the same name, Joan's intensity in 1970 was significantly greater. Its minimum central pressure of 901 hPa was far lower than that of Joan in 1997, at 930 hPa, and Joan in 1962, at 985 hPa, as well as the severe tropical storms in 1973 and 1964. As a rare super typhoon in the 1970 annual sequence, Joan displayed an extreme release of energy. Its peak intensity ranks first among cyclones with the same name, reflecting the favorable thermal and dynamic conditions for rapid typhoon development in the Northwest Pacific that year.

Typhoon Joan routes

Time	Position	Intensity	Wind · Pressure	Move Toward
10-09 08:00	7.2°N 148°E	Tropical Depression	- m/s 1004 hPa	-
10-09 20:00	8.1°N 144.1°E	Tropical Depression	15 m/s 1002 hPa	WNW
10-10 08:00	9.6°N 140.4°E	Severe Tropical Storm	25 m/s 997 hPa	WNW
10-10 20:00	10.7°N 137°E	Severe Tropical Storm	30 m/s 990 hPa	WNW
10-11 08:00	11.1°N 133.3°E	Severe Tropical Storm	30 m/s 985 hPa	W
10-11 20:00	11.6°N 130.4°E	Typhoon	40 m/s 969 hPa	WNW
10-12 08:00	11.4°N 127.8°E	Super Typhoon	55 m/s 950 hPa	W
10-12 20:00	12°N 126.5°E	Super Typhoon	65 m/s 920 hPa	NW
10-13 08:00	13.5°N 124.6°E	Super Typhoon	75 m/s 901 hPa	NW
10-13 20:00	13.8°N 122.5°E	Super Typhoon	60 m/s 926 hPa	WNW
10-14 08:00	14.6°N 120.4°E	Severe Typhoon	45 m/s 954 hPa	W
10-14 20:00	14.3°N 117.9°E	Severe Typhoon	45 m/s 966 hPa	WSW
10-15 08:00	14.8°N 115.8°E	Severe Typhoon	45 m/s 966 hPa	W
10-15 20:00	15.1°N 114.6°E	Severe Typhoon	50 m/s 958 hPa	NW
10-16 08:00	16.5°N 112.9°E	Severe Typhoon	50 m/s 952 hPa	NW
10-16 20:00	18.5°N 111.9°E	Severe Typhoon	50 m/s 960 hPa	NNW
10-17 08:00	19.5°N 110.6°E	Severe Typhoon	50 m/s 965 hPa	WNW
10-17 20:00	20.6°N 110.2°E	Tropical Storm	20 m/s 988 hPa	N
10-18 08:00	21.5°N 110.2°E	Tropical Depression	12 m/s 998 hPa	N
10-18 20:00	21.5°N 111.4°E	Tropical Depression	9 m/s 1005 hPa	E
10-19 02:00	21.2°N 111.6°E	Tropical Depression	9 m/s 1007 hPa	SSE

Sampled rows shown; all 40 track points are available on the interactive map or via the public API .

FAQ

Typhoon Joan was the 1970s Typhoon.

The identifier 197013 for Typhoon Joan is the historical number retained by the CMA, meaning the 13th typhoon of 1970. Its international name was JOAN. International cyclone identifiers for the Northwest Pacific were not introduced until 1981; before then, different agencies maintained separate numbering systems. The numbers assigned by the JMA in Japan, the Joint Typhoon Warning Center in the United States, and China's meteorological authorities for the same typhoon could differ and cannot be directly compared.

Where does Typhoon Joan's track data come from?

Track data sources: China Meteorological Administration Tropical Cyclone Best Track Dataset (CMA-STI); wind speeds are 2-minute sustained wind speeds.

What is the highest level of Typhoon Joan?

Typhoon Joan peak intensity is Super Typhoon, max wind 75m/s, minimum central pressure 901 hPa.

Is the typhoon Joan Landfall?

According to records, Typhoon Joan is not in our coastal Landfall.

Where can I view typhoon Joan's live track map?

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/197013.

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