Typhoon Kai-Tak - 2012/08/15 0000 UTC

Flight route of DOTSTAR

The flight route of DOTSTAR

Storm symbol in black: Location of the storm center at 2012/08/15 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.TIMELongitudeLatitudeDISTWDWSMBLWL150
12012/08/14 21:53:55122.723.8678107---5.54.7
22012/08/14 22:07:46122.822.45120767.06.45.2
32012/08/14 22:20:10122.621.1366062---9.18.7
42012/08/14 22:31:07121.920.226506312.311.310.8
52012/08/14 22:40:13121.919.215304514.212.712.4
62012/08/14 22:48:36122.619.5181057---11.09.7
72012/08/14 22:59:13123.620.2295085---8.88.3
82012/08/14 23:10:11124.421.04181098.77.47.4
92012/08/14 23:20:11123.521.5420080---8.07.1
102012/08/14 23:32:00124.022.6549082---6.36.5
112012/08/14 23:46:00125.422.76260915.16.95.5
122012/08/14 23:55:29125.423.7718117---6.56.3
132012/08/15 00:06:47125.224.8817095---5.15.1
142012/08/15 00:17:30124.124.9789------------

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

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).