Typhoon Ivy (197715) track archive

1977 Typhoon Past typhoons named Ivy Typhoon archive

[Quick Archive Overview]Typhoon Ivy (No. 197715, its pre-1981 historical number) was a 1977 Northwest Pacific typhoon. It peaked as a severe typhoon, with maximum winds of 45 m/s and a minimum central pressure of 945 hPa. It did not make landfall in China and was numbered off on October 27, 1977. The full life cycle contains 32 recorded track points.

Numbering note: The international numbering system for the Northwest Pacific was established by the JMA in Japan, the Tokyo Regional Professional Meteorological Center, in 1981. This system did not exist in 1977, so 197715 is the historical identifier used by the CMA. The numbers assigned that year by the JMA, the Joint Typhoon Warning Center in the United States, and China’s meteorological authorities for the same typhoon may 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 Ivy Trail Analysis

Track and Movement Characteristics

Typhoon Ivy (197715) 的生命史始 at Northwest Pacific远洋海域, 整体路径呈现典型的“NW—NE”抛物线型转 toward 特征. formed初期 (10月19日至21日) , 系统位 at 146°E至147°E附近, 主要 toward NW direction缓慢Moving, 纬度从10°N攀升至16.9°N. 值得注意的是, 在10月22日08:00至20:00期间, Typhoon 中心出现短暂的W折迹象, 经度由147.2°E回退至146°E, 随后 at 10月23日开始稳定转 toward NE.

After turning, the typhoon’s movement speed increased markedly. From 150.5°E at 08:00 on October 24 to 159.4°E at 02:00 on October 27, near the end of its life, it traveled almost nine degrees of longitude eastward in roughly three days, while its latitude continued to rise northward to 32.6°N. Throughout its entire life cycle, the typhoon remained over the ocean with no recorded landfall and ultimately weakened and dissipated in the high-latitude seas.

Intensity evolution and historical comparison

Ivy’s intensity followed a complete formation–intensification–peak–weakening cycle. At the initial stage, central pressure stayed near 1004 hPa and wind speeds were low. From October 22, as the system became better organized, pressure dropped rapidly below 990 hPa and it strengthened into a tropical storm. October 24–25 was its main intensification period, with pressure plunging from 967 hPa to a minimum of 945 hPa and maximum wind increasing to 45 m/s, reaching severe typhoon strength. The peak stage was brief. After October 26, the system weakened under the influence of the high-latitude environment, with pressure rising to 970 hPa and wind speed falling to 35 m/s.

Compared with earlier typhoons of the same name, Ivy’s peak intensity in 1977 (945 hPa, 45 m/s) matched that of Ivy in 1974 (197411), with both reaching extreme intensity. Both were markedly stronger than Ivy in 1971 (978 hPa) and 1965 (990 hPa). This indicates that Ivy in 1977 and 1974 were exceptionally intense storms within the series. Although Ivy in 1977 did not make landfall and cause direct damage, its powerful oceanic development was notable and exemplified the rapid intensification typical of late-autumn typhoons in the Northwest Pacific.

Typhoon Ivy routes

Time	Position	Intensity	Wind · Pressure	Move toward
10-19 08:00	10°N 146°E	Tropical Depression	- m/s 1004 hPa	-
10-19 20:00	12°N 146°E	Tropical Depression	- m/s 1004 hPa	N
10-20 08:00	13.5°N 146.5°E	Tropical Depression	- m/s 1004 hPa	NNE
10-20 20:00	15.2°N 147°E	Tropical Depression	10 m/s 1004 hPa	NNE
10-21 08:00	16.4°N 147.2°E	Tropical Depression	12 m/s 1002 hPa	N
10-21 20:00	16.9°N 147.1°E	Tropical Depression	15 m/s 1000 hPa	N
10-22 08:00	17.4°N 146°E	Tropical Storm	20 m/s 990 hPa	WNW
10-22 20:00	16.9°N 145.7°E	Severe Tropical Storm	25 m/s 985 hPa	SE
10-23 08:00	17.6°N 146.7°E	Severe Tropical Storm	25 m/s 980 hPa	NE
10-23 20:00	19.4°N 147.9°E	Severe Tropical Storm	30 m/s 972 hPa	NNE
10-24 08:00	21.1°N 150.5°E	Typhoon	35 m/s 967 hPa	ENE
10-24 20:00	23.5°N 153.2°E	Typhoon	35 m/s 965 hPa	NE
10-25 08:00	25.6°N 154.3°E	Typhoon	40 m/s 950 hPa	NNE
10-25 20:00	27.6°N 155.4°E	Severe Typhoon	45 m/s 945 hPa	NNE
10-26 08:00	29.3°N 156.6°E	Typhoon	40 m/s 950 hPa	NNE
10-26 20:00	31.3°N 158.3°E	Typhoon	35 m/s 965 hPa	NE
10-27 02:00	32.6°N 159.4°E	Typhoon	35 m/s 970 hPa	NE

Sampled rows shown; all 32 track points are available on the interactive map or via the public API .

FAQ

Typhoon Ivy is the 1977 Typhoon.

The number 197715 for Typhoon Ivy is the historical identifier used by the CMA, meaning the 15th typhoon of 1977, while its international name was IVY. The international numbering system for the Northwest Pacific was not introduced until 1981. Before then, agencies assigned their own numbers, so the numbers used 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 are not directly comparable.

Where did the track data for Typhoon Ivy 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 Typhoon Ivy?

Typhoon Ivy peak intensity is Severe Typhoon, max wind 45m/s, minimum central pressure 945 hPa.

Is there a Typhoon IvyLandfall?

According to records, Typhoon Ivy is not in our coastal landfall.

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

TyphoonSays (taifengshuo.com) provides typhoon Ivy's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/197715.

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