Latest News

2018/09/27

Typhoon Trami (data provided by CWB)

read more ...

2018/09/15

Typhoon Mangkhut (data provided by CWB)

read more ...

2018/07/10

Typhoon Maria (data provided by CWB)

read more ...

Typhoon Megi - 2016/09/26 0000 UTC

Flight route of DOTSTAR

The flight route of DOTSTAR

Storm symbol in black: Location of the storm center at 2016/09/26 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
12016/09/25 22:12:22123.621.4410352---15.013.9
22016/09/25 22:25:36124.420.2324323---19.116.1
32016/09/25 22:34:52125.119.4294314---18.718.1
42016/09/25 22:47:27125.918.133426513.817.015.6
52016/09/25 23:01:54127.618.0306------------
62016/09/25 23:17:38128.619.3210211---28.025.3
72016/09/25 23:27:54129.320.4207152---25.323.3
82016/09/25 23:41:48128.621.7176097---30.830.5
92016/09/25 23:51:15128.022.723108327.630.027.1
102016/09/26 00:00:28126.823.126205222.926.224.5
112016/09/26 00:09:25125.623.028802420.121.820.2
122016/09/26 00:15:55124.922.933001919.119.718.1
132016/09/26 00:23:19124.923.839303315.917.115.8

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).