Typhoon Ragasa - 2025/09/21 0600 UTC
Flight route of DOTSTAR
Storm symbol in black: Location of the storm center at 2025/09/21 0600 UTC.
Storm symbol in green: Location of the storm center as the first dropwindsonde reached the surface.
Storm symbol in blue: Location of the storm center as the last dropwindsonde reached the surface.
Wind vector at each pressure level
Dropwindsonde information and the estimated surface wind speed
| NO. | TIME | Longitude | Latitude | DIST | WD | WS | MBL | WL150 |
|---|---|---|---|---|---|---|---|---|
| 1 | 2025/09/21 03:26:40 | 120.8 | 21.0 | 597 | 029 | --- | 8.0 | 7.5 |
| 2 | 2025/09/21 03:48:58 | 122.2 | 19.7 | 409 | 014 | 10.3 | 11.9 | 10.5 |
| 3 | 2025/09/21 04:03:48 | 123.8 | 18.9 | 232 | 351 | 20.1 | 17.8 | 17.6 |
| 4 | 2025/09/21 04:16:37 | 124.2 | 17.3 | 234 | 304 | 17.6 | 17.3 | 15.4 |
| 5 | 2025/09/21 04:29:07 | 125.4 | 16.2 | 264 | 278 | 15.9 | 20.8 | 18.8 |
| 6 | 2025/09/21 04:41:18 | 126.9 | 16.1 | 284 | 224 | --- | 20.8 | 20.4 |
| 7 | 2025/09/21 04:53:47 | 128.4 | 17.0 | 291 | --- | --- | --- | --- |
| 8 | 2025/09/21 05:02:01 | 128.6 | 18.1 | 268 | 144 | --- | 21.5 | 20.9 |
| 9 | 2025/09/21 05:06:24 | 128.7 | 18.6 | 272 | 141 | --- | 23.8 | 22.7 |
| 10 | 2025/09/21 05:18:59 | 127.9 | 20.1 | 261 | 103 | 16.3 | 20.8 | 19.3 |
| 11 | 2025/09/21 05:33:35 | 126.1 | 20.7 | 256 | 051 | --- | 18.4 | 17.4 |
| 12 | 2025/09/21 05:42:18 | 124.9 | 20.4 | 253 | 031 | --- | 19.9 | 19.1 |
| 13 | 2025/09/21 05:52:24 | 123.6 | 20.9 | 386 | 062 | 16.6 | 15.0 | 13.2 |
TIME: Time when dropwindsondes reached the surface. (UTC)
DIST: The distance form each dropwindsonde to the corresponded storm center. (km)
WD: Surface wind direction. (degree)
Surface wind speed: (unit : m/s)
(1) WS: Surface wind speed (at a height of 10 meters) directly from the dropwindsondes.
(2) MBL (Franklin 2003): Averaging the dropwindsonde wind speed over the 0~500 m layer, multiplied by 0.80.
(3) WL150 (Franklin 2003): Averaging the dropwindsonde wind speed over the 0~150 m layer, divided by 1.229.
CWA QPESUMS Image
(925 hPa wind, one full barb = 10 m/s)
Ask for Data
If you want to ask for the raw data of dropwindsondes, please contact with Central Weather Administration (CWA).