The SummaryTyphoon Thelma (international code 198017) is a 1980 Northwest Pacific typhoon; peak intensity Severe Tropical Storm, max wind 28m/s, minimum central pressure 975hPa, not in China Landfall, 1980-09-30 was numbered off, recording 23 track points.
Typhoon Thelma, international code 198017, international name THELMA, 1980 Northwest Pacific typhoon. Formed: 1980-09-25 00:00:00, ended: 1980-09-30 12:00:00. Peak intensity: Severe Tropical Storm, minimum central pressure: 975 hPa, max wind: 28m/s.
Typhoon Thelma at 1980-09-25 00:00:00 at 15.5°N, 147°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Severe Tropical Storm intensity with max winds of 28 m/s (~101 km/h) and a minimum central pressure of 975hPa, recorded at 1980-09-29 06:00:00.
1980-09-30 12:00:00 After, Typhoon Thelma gradually weakened and was numbered off on 1980-09-30 12:00:00 was numbered off; its lifecycle recorded 23 track points.
Typhoon Thelma (198017) 的生命周期始 at Northwest Pacific远洋海域, 整体路径呈现典型的“NW—NE”转 toward 抛物线形态. formed初期 (9月25日至26日) , 系统位 at 146°E至147°E之间, 维持NamelessIntensity, 以缓慢速度 toward NW, The latitude从15.5°N逐步N抬至17.8°N. Go to 9月27日后, 移速略有加快, 持续 toward NNW direction推进, During逐渐W移至142°E附近.
The key turning point of the path appeared after noon on September 28th. at this time Typhon's center at 24.5°N, 142.4°E, followed by a significant change in Moving direction, from NW toward to NE toward. this turning toward process accompanied by the rapid N-height of latitude, from 24.5°N rapidly jumping to 30.9°N, the length also corresponding to E back to 155.8°E. Thro the history of life, the Typhon has not landfall any land, has always been active on the ocean, and has eventually weakened dispersal in the high latitudes.
In terms of intensity changes, Thelma underwent a complete development process from Nameless to Severe Tropical Storm. During September 25 to 27, the systemined the Nameless state for a long time, max wind fluctuating between 7m/s to 17m/s. On September 28 at 12 a.m., with Max Wind increasing near the center to 20m/s, the system officially upgraded to Tropical Storm, and subsequently rapidly enhanced. On September 29 at 06 a.m. to 18 a.m., Typhoon reached peak intensity, qualitative as Severe Tropical Storm, max wind stable at 28m/s. Then, influenced by high-latitude environmental factors, intensity began to weaken, and on September 30 at 00 a.m. decreased to Tropical Storm, until the end of life
Its peak intensity is only Severe Tropical Storm (28m/s), far lower at 1987 Thelma (Super Typhoon) and 1977 Thelma (Severe Typhoon). compared with 1991 Thelma (Tropical Storm) slightly stronger, with 1983 Thelma (Severe Tropical Storm) Intensity level comparable.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1980-09-25 00:00:00 | 15.5°N | 147°E | Nameless | 7 | 1006 | |
| 1980-09-25 12:00:00 | 15.8°N | 146.6°E | Nameless | 7 | 1004 | |
| 1980-09-26 00:00:00 | 16.3°N | 146.1°E | Nameless | 10 | 1002 | |
| 1980-09-26 12:00:00 | 17.3°N | 145.1°E | Nameless | 12 | 1000 | |
| 1980-09-27 00:00:00 | 18.3°N | 144.3°E | Nameless | 12 | 998 | |
| 1980-09-27 12:00:00 | 20°N | 143°E | Nameless | 15 | 996 | |
| 1980-09-28 00:00:00 | 21.7°N | 142.2°E | Nameless | 17 | 992 | |
| 1980-09-28 12:00:00 | 24.5°N | 142.4°E | Tropical Storm | 20 | 990 | |
| 1980-09-29 00:00:00 | 26.8°N | 143.5°E | Severe Tropical Storm | 25 | 985 | |
| 1980-09-29 12:00:00 | 29.4°N | 144.9°E | Severe Tropical Storm | 28 | 980 | |
| 1980-09-30 00:00:00 | 32.3°N | 147.9°E | Tropical Storm | 23 | 980 | |
| 1980-09-30 12:00:00 | 37.3°N | 155.8°E | Tropical Storm | 23 | - |
Sampled rows shown; all 23 track points are available on the interactive map or via the public API .
Typhoon Thelma's international code is 198017, is 1980's 17th Typhoon, international name THELMA.
Typhoon Thelma peak intensity is Severe Tropical Storm, max wind 28m/s, minimum central pressure 975 hPa.
According to records, the Typhoon Thelma is not in our coastal Landfall.
TyphoonSays (taifengshuo.com) provides typhoon Thelma's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/198017.
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Weather data: NASA GIBS / OpenWeatherMap / Open-Meteo / NOAA WW3, for reference only
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