Typhoon Bolaven - 2012/08/25 0000 UTC
Flight route of DOTSTAR
Storm symbol in black: Location of the storm center at 2012/08/25 0000 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 | 2012/08/24 21:32:18 | 119.7 | 23.2 | 1283 | --- | --- | 18.9 | --- |
| 2 | 2012/08/24 21:46:12 | 118.9 | 22.3 | 1375 | 169 | --- | 19.2 | 19.6 |
| 3 | 2012/08/24 21:53:10 | 119.3 | 21.9 | 1338 | 205 | --- | 19.5 | 18.4 |
| 4 | 2012/08/24 21:57:55 | 119.8 | 21.5 | 1297 | --- | --- | --- | --- |
| 5 | 2012/08/24 22:14:28 | 121.7 | 21.6 | 1104 | 197 | --- | 9.4 | 8.4 |
| 6 | 2012/08/24 22:36:08 | 123.0 | 23.3 | 945 | 105 | --- | 3.5 | 4.0 |
| 7 | 2012/08/24 22:54:31 | 123.9 | 24.8 | 852 | 082 | --- | 5.1 | 5.0 |
| 8 | 2012/08/24 23:08:06 | 125.5 | 24.8 | 696 | 021 | 6.9 | 6.6 | 6.2 |
| 9 | 2012/08/24 23:20:17 | 126.8 | 24.4 | 551 | 002 | --- | 9.8 | --- |
| 10 | 2012/08/24 23:30:17 | 127.9 | 24.0 | 434 | 357 | --- | 13.2 | 11.4 |
| 11 | 2012/08/24 23:41:38 | 129.1 | 23.8 | 306 | 350 | 19.2 | 17.8 | 16.4 |
| 12 | 2012/08/24 23:51:13 | 130.0 | 23.0 | 226 | 315 | 20.3 | 18.6 | 17.3 |
| 13 | 2012/08/25 00:00:49 | 130.7 | 22.1 | 211 | --- | --- | --- | --- |
| 14 | 2012/08/25 00:09:32 | 131.4 | 21.3 | 255 | 240 | --- | 20.4 | 19.4 |
| 15 | 2012/08/25 00:22:06 | 132.4 | 21.9 | 190 | 228 | --- | 30.2 | 27.5 |
| 16 | 2012/08/25 00:29:40 | 133.2 | 22.9 | 143 | 176 | --- | 28.5 | 23.0 |
| 17 | 2012/08/25 00:42:41 | 132.8 | 23.9 | 85 | 110 | 31.9 | 33.1 | 28.3 |
| 18 | 2012/08/25 00:52:28 | 131.6 | 24.2 | 75 | 030 | 28.2 | 30.9 | 26.5 |
| 19 | 2012/08/25 01:00:34 | 130.7 | 24.6 | 171 | 023 | --- | 26.8 | 24.8 |
| 20 | 2012/08/25 01:10:03 | 129.5 | 24.9 | 286 | 024 | 18.4 | 15.2 | 13.6 |
| 21 | 2012/08/25 01:16:58 | 128.7 | 25.3 | 372 | 022 | --- | 13.5 | 13.7 |
| 22 | 2012/08/25 01:26:40 | 128.2 | 26.2 | 468 | 027 | 17.7 | 15.6 | 14.6 |
| 23 | 2012/08/25 01:32:00 | 128.4 | 27.5 | 557 | 045 | --- | 13.9 | 15.7 |
| 24 | 2012/08/25 01:53:14 | 127.0 | 27.1 | 617 | 030 | 13.9 | 12.2 | 12.0 |
| 25 | 2012/08/25 02:05:11 | 126.1 | 26.0 | 634 | 020 | --- | 9.3 | 8.6 |
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.
CWB 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 Bureau (CWB).