The SummaryTyphoon Dianmu (international code 202115) is a 2021 Northwest Pacific typhoon; peak intensity Tropical Storm, max wind 18m/s, minimum central pressure 998hPa, not in China Landfall, 2021-09-24 was numbered off, recorded 20 track points.
Typhoon Dianmu, international code 202115, international name Dianmu, 2021 Northwest Pacific typhoon. Formed: 2021-09-22 17:00:00, ended: 2021-09-24 08:00:00. Peak intensity: Tropical Storm, minimum central pressure: 998 hPa, max wind: 18m/s.
Typhoon Dianmu at 2021-09-22 17:00:00 at 12.8°N, 113.6°E over the Northwest Pacific; initial intensity: Nameless.
It peaked at Tropical Storm intensity with max winds of 18 m/s (~65 km/h) and a minimum central pressure of 998hPa, recorded at 2021-09-23 17:00:00.
Typhoon Dianmu gradually weakened and was numbered off on 2021-09-24 08:00:00 was numbered off; its lifecycle recorded 20 track points.
The life history of the 15th Typehoon “Dianmu” in 2021 is short, from formed to dispersed only about 39h. According to the observation data, its overall path shows a stable NW toward MovingTrend, with no obvious Landfall record or sharp turn toward.The initial phase (September 22, 17th to 23th, 08th) , system center position at lat 12.8° to 13.6°N, between 113.6° to 111.8°, Moving direction is mainly WNW, latitude increases slowly, longitude continues to decrease.
During the period from 08:00 to 14:00 on September 23, the Moving speed accelerated, the latitude rapidly jumping from 13.6°N to 15.1°N, the length synchronized with W moved to 110.2°E, showing an enhanced effect of guiding airflow. subsequently, the path tended at slow, the center swung between 15.2° to 15.8°, continued toward WN, until Go to lng 107° to W ocean. Thro the process, the trajectory smoothed, no abnormal fold or stagnation phenomenon, and finally at 24 September 08 at 15.8°N, decreased dispersion near 106.7°E.
'Dianmu''s Intensity evolution is expressed as a 'short post-improvement maintenance, ultimately rapid weakening' characteristic. The system in the formed earlyins the Nameless level, Pressure stable at 1002hPa, max wind remains at 15m/s. Until September 23, 17, with Pressure dropped to 998hPa, max wind increased to 18m/s, the system officially upgraded to Tropical Storm, reaching its life epic peak intensity. In 24h, the intensity remains highly stable, the air pressure remains at 998hPa, wind speed stable at 18m/s. Until September 24,05th, the air pressure returns to 1000hPa, then quickly weakened into nameless, wind speed drops to 13m/s, air pressure rises to 100
Its peak intensity is only Tropical Storm, minimum pressure is 998hPa. In comparison, 2016 and 2010 'Dianmu' have reached the Severe Tropical Storm level, minimum pressure is 978hPa and 980hPa respectively; and 2004 'Dianmu' has developed to Super Typhoon, minimum pressure is low to 910hPa.
| Time | The latitude | During | Intensity | Wind (m/s) | Pressure (hPa) | Moving toward |
|---|---|---|---|---|---|---|
| 2021-09-22 17:00:00 | 12.8°N | 113.6°E | Nameless | 15 | 1002 | NWW |
| 2021-09-22 20:00:00 | 12.9°N | 113.4°E | Nameless | 15 | 1002 | NW |
| 2021-09-22 23:00:00 | 13.1°N | 113.2°E | Nameless | 15 | 1002 | NW |
| 2021-09-23 02:00:00 | 13.4°N | 112.9°E | Nameless | 15 | 1002 | NW |
| 2021-09-23 05:00:00 | 13.5°N | 112.4°E | Nameless | 15 | 1002 | NW |
| 2021-09-23 08:00:00 | 13.6°N | 111.8°E | Nameless | 15 | 1002 | NW |
| 2021-09-23 11:00:00 | 14.4°N | 111°E | Nameless | 15 | 1002 | NWW |
| 2021-09-23 14:00:00 | 15.1°N | 110.2°E | Nameless | 15 | 1002 | NW |
| 2021-09-23 17:00:00 | 15.2°N | 109.9°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-23 18:00:00 | 15.3°N | 109.8°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-23 19:00:00 | 15.3°N | 109.8°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-23 20:00:00 | 15.4°N | 109.6°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-23 21:00:00 | 15.4°N | 109.4°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-23 22:00:00 | 15.4°N | 109.2°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-23 23:00:00 | 15.5°N | 108.9°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-24 00:00:00 | 15.6°N | 108.8°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-24 01:00:00 | 15.6°N | 108.7°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-24 02:00:00 | 15.7°N | 108.3°E | Tropical Storm | 18 | 998 | NWW |
| 2021-09-24 05:00:00 | 15.8°N | 107.1°E | Tropical Storm | 18 | 1000 | W |
| 2021-09-24 08:00:00 | 15.8°N | 106.7°E | Nameless | 13 | 1006 | W |
The international code for Typhoon Dianmu is 202115, which is the 15th Typhoon in 2021, and the international name Dianmu.
Typhoon Dianmu peak intensity is Tropical Storm, max wind 18m/s, minimum central pressure 998 hPa.
According to records, Typhoon Dianmu is not in our coastal landfall.
TyphoonSays (taifengshuo.com) provides typhoon Dianmu's Track history map, multinational meteorological agency Forecast comparison, wind range with IntensityTrend, page address: https://taifengshuo.com/typhoon/202115.
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Weather data: NASA GIBS / OpenWeatherMap / Open-Meteo / NOAA WW3, for reference only
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