Typhoon Ruth trajectory analysis
Track and Turning Characteristics
Typhoon Ruth (199123) 的生命史长达15天, 整体路径呈现典型的“W进-NW行-NE转 toward ”抛物线形态. formed初期, 系统自Philippines以E洋面 (146.5°E) toward NW direction稳定Moving, 横穿Philippines群岛以E海域. 在10月23日至27日期间, 其Moving direction逐渐由NW转为W, 随后在接近120°E附近时路径发生显著转折. 值得注意的是, 该Typhoon 在10月28日至29日期间 at 巴士海峡以E海域出现短暂的停滞或少动现象 (经度从120.3°E微移至119.8°E) , 随后受W风带引导气流影响, 路径急剧转 toward NE. 转 toward 后, 系统加速穿越琉球群岛以E及Japan以S洋面, 最终 at 11月3日在Northwest Pacific远洋海域消散. 全程无Landfall记录, 主要活动区域集中在开阔洋面.
Intensity evolution and historical comparison
Ruth underwent explosive intensification followed by a gradual weakening. It began as a tropical depression and rapidly strengthened within four days, rising from a tropical storm on October 21 (20m/s) to a super typhoon on October 24 (60m/s, 910hPa). Its peak intensity lasted about 48h, with pressure falling to 910hPa and maximum wind reaching 60m/s, indicating a very powerful central convective structure. After October 26, its intensity declined in stages as it moved northward and the environmental conditions changed, weakening into a tropical depression by October 30. However, after recurving toward the northeast and entering higher latitudes, the system briefly reintensified from October 31 to November 1, developing from a tropical depression back into a tropical storm before weakening again and dissipating.
Compared with previous typhoons bearing the same name, Ruth in 1991 had a decisively greater intensity. Its peak pressure of 910hPa was far lower than Ruth in 1987 (982hPa), Ruth in 1980 (979hPa), and Ruth in 1994 (995hPa). Other storms with this name peaked only at the severe tropical storm or typhoon intensity, while Ruth in 1991 reached super typhoon status, making it the strongest of the historical storms listed with this name.
Typhoon Ruth routes
| Time | Position | Intensity | Wind · Pressure | Moving Toward |
|---|
| 10-19 20:00 | 8.5°N
146.5°E | Tropical Depression | 12 m/s
1004 hPa | - |
| 10-20 14:00 | 10°N
145°E | Tropical Depression | 15 m/s
1000 hPa | NW |
| 10-21 08:00 | 11.5°N
143.5°E | Tropical Depression | 15 m/s
1000 hPa | NW |
| 10-22 02:00 | 11.9°N
142.1°E | Tropical Storm | 20 m/s
990 hPa | NW |
| 10-22 20:00 | 13.5°N
140.7°E | Severe Tropical Storm | 30 m/s
980 hPa | NW |
| 10-23 14:00 | 14.2°N
138.1°E | Severe Typhoon | 45 m/s
950 hPa | WNW |
| 10-24 08:00 | 14.6°N
135.3°E | Super Typhoon | 55 m/s
930 hPa | WNW |
| 10-25 02:00 | 15.4°N
132.2°E | Super Typhoon | 60 m/s
910 hPa | WNW |
| 10-25 20:00 | 16.5°N
129.6°E | Super Typhoon | 60 m/s
910 hPa | WNW |
| 10-26 14:00 | 17.9°N
126.4°E | Super Typhoon | 60 m/s
920 hPa | WNW |
| 10-27 08:00 | 18.7°N
123.3°E | Severe Typhoon | 50 m/s
940 hPa | W |
| 10-28 02:00 | 17.9°N
121.3°E | Typhoon | 40 m/s
960 hPa | W |
| 10-28 20:00 | 18°N
120.3°E | Typhoon | 35 m/s
975 hPa | WNW |
| 10-29 14:00 | 19.3°N
119.6°E | Severe Tropical Storm | 25 m/s
985 hPa | N |
| 10-30 08:00 | 20.7°N
121°E | Tropical Depression | 15 m/s
998 hPa | NE |
| 10-31 02:00 | 23.2°N
125.1°E | Tropical Storm | 20 m/s
1000 hPa | ENE |
| 10-31 20:00 | 26°N
131.5°E | Tropical Storm | 20 m/s
1002 hPa | ENE |
| 11-01 14:00 | 31°N
141°E | Tropical Storm | 20 m/s
1002 hPa | NE |
| 11-02 08:00 | 34°N
149°E | Tropical Depression | 15 m/s
1005 hPa | ENE |
| 11-03 02:00 | 33.9°N
157.7°E | Tropical Depression | 15 m/s
1005 hPa | ESE |
| 11-03 08:00 | 33°N
160°E | Tropical Depression | 15 m/s
1005 hPa | ESE |
Sampled rows shown; all 59 track points are available on the interactive map or via the public API .
FAQ
Typhoon Ruth was the 1991 Typhoon.
Typhoon Ruth's international code is 199123, is the 23rd Typhoon of 1991, international name RUTH.
What is the highest level of Typhoon Ruth?
Typhoon Ruth peak intensity is Super Typhoon, max wind 60m/s, minimum central pressure 910 hPa.
Typhoon RuthLandfall?
According to records, Typhoon Ruth is not in our coastal Landfall.
Where can I view typhoon Ruth's live track map?
TyphoonSays (taifengshuo.com) provides typhoon Ruth's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/199123.
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