The SummaryTyphoon Irma (international code 198121) is a 1981 Northwest Pacific typhoon; peak intensity Super Typhoon, max wind 69m/s, minimum central pressure 905hPa, not in China Landfall, 1981-11-27 was numbered off, recording 38 track points.
Typhoon Irma, international code 198121, international name IRMA, 1981 Northwest Pacific typhoon. Formed: 1981-11-17 18:00:00, ended: 1981-11-27 00:00:00. Peak intensity: Super Typhoon, minimum central pressure: 905 hPa, max wind: 69m/s.
Typhoon Irma at 1981-11-17 18:00:00 at 11.1°N, 154.8°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Super Typhoon intensity with max winds of 69 m/s (~248 km/h) and a minimum central pressure of 905hPa, recorded at 1981-11-22 12:00:00.
Typhoon Irma gradually weakened and was numbered off on 1981-11-27 00:00:00 was numbered off; its lifecycle recorded 38 track points.
Typhoon Irma (198121) 的生命史始 at Northwest Pacific远洋海域, 整体路径呈现显著的“W行后N折”特征. formed初期 (11月17日至19日) , 系统位 at 154.8°E附近, 主要 toward W, The latitude从11.1°N缓慢上升至13.4°N. Go to 发展阶段后 (11月20日至23日) , Typhoon 维持稳定的W行路径, 横穿Philippines以E洋面, During从144.7°E快速W进至129.5°E, 期间纬度变化不大, 基本维持在13°N-14°N之间.
The key turning point of the path appeared between 18:00 and 12:00 on 23 November. at this time Typhon centered at 124.6°E nearby, followed by a noticeable change in Moving direction, shifted from pure W line to NW, and gradually toward N. After 25 November, the system further shifted toward NE direction, finally at 27 November at 23.9°N, 125.5°E near weakened into Nameless and ended observations.
Irma's Intensity evolution underwent a typical 'fast enhancement - peak maintenance - rapid weakening' process. Initial phase was Nameless, November 20 intensified into Tropical Storm, then rapidly enhanced into Typhoon within 24h, and at November 21 reached Severe Typhoon level. November 22 06:00, its Max Wind reached 66m/s, establishing Super Typhoon status; the next day 00:00wind speed further recorded as 61m/s, although slightly fluctuating but stillining Super TyphoonIntensity.
Starting at 18:00 on November 23, Typhoon Intensity rapidly decreased with path N, wind speed dropped from 53m/s to 33m/s (Typhoon), and weakened into Tropical Storm within 48h.
In 1993, the same name Typhoon peak intensity in 1988 and 1978 was only Severe Tropical Storm or Typhoon level, in 1985 Irma although reached Severe Typhoon level, but did not touch the 'Super Typhoon' threshold.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 1981-11-17 18:00:00 | 11.1°N | 154.8°E | Nameless | 12 | 1006 | |
| 1981-11-18 06:00:00 | 11.3°N | 152.2°E | Nameless | 12 | 1005 | |
| 1981-11-18 18:00:00 | 12.2°N | 150.4°E | Nameless | 15 | 1008 | |
| 1981-11-19 06:00:00 | 13.4°N | 147.8°E | Nameless | 17 | 1000 | |
| 1981-11-19 18:00:00 | 13.8°N | 145.6°E | Tropical Storm | 20 | 995 | |
| 1981-11-20 06:00:00 | 13.9°N | 143.9°E | Severe Tropical Storm | 25 | 985 | |
| 1981-11-20 18:00:00 | 13.8°N | 141.5°E | Typhoon | 33 | 975 | |
| 1981-11-21 06:00:00 | 13.8°N | 139.2°E | Typhoon | 41 | 960 | |
| 1981-11-21 18:00:00 | 13.8°N | 137.1°E | Super Typhoon | 56 | 950 | |
| 1981-11-22 06:00:00 | 13.2°N | 134.3°E | Super Typhoon | 66 | 910 | |
| 1981-11-22 18:00:00 | 12.7°N | 131.2°E | Super Typhoon | 66 | 910 | |
| 1981-11-23 06:00:00 | 12.8°N | 127.8°E | Super Typhoon | 59 | 920 | |
| 1981-11-23 18:00:00 | 14°N | 124.6°E | Super Typhoon | 53 | 935 | |
| 1981-11-24 06:00:00 | 15.3°N | 122°E | Severe Typhoon | 43 | 965 | |
| 1981-11-24 18:00:00 | 16.9°N | 119.7°E | Severe Tropical Storm | 28 | 985 | |
| 1981-11-25 06:00:00 | 18.5°N | 119.3°E | Tropical Storm | 23 | 990 | |
| 1981-11-25 18:00:00 | 20.2°N | 120.5°E | Tropical Storm | 20 | 990 | |
| 1981-11-26 06:00:00 | 21.8°N | 122.1°E | Tropical Storm | 20 | 994 | |
| 1981-11-26 18:00:00 | 23.2°N | 124.2°E | Nameless | 17 | 998 | |
| 1981-11-27 00:00:00 | 23.9°N | 125.5°E | Nameless | 17 | 1000 |
Sampled rows shown; all 38 track points are available on the interactive map or via the public API .
Typhoon Irma's international code is 198121, is the 21st Typhoon of 1981, international name IRMA.
Typhoon Irma peak intensity is Super Typhoon, max wind 69m/s, minimum central pressure 905 hPa.
According to records, Typhoon Irma is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Irma's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/198121.
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