tropical depression

基本解释

Under the state of binary typhoons, the development of South China Sea tropical depression depended on the strength and distances of two OLR low centers.
在雙台風狀態下，兩個低值中心的強弱情況和距離決定熱帶低壓能否發展。
qk.cams.cma.gov.cn
The Shanghai heavy rainfall event on 5~6 August 2001( 0185 event, in abbreviation) caused by tropical depression(TD) is a typical high-impact and severe weather.
發生在上海地區的2001年8月5～6日熱帶低壓特大暴雨過程（簡稱“0185”過程）是一次高影響性、災害性天氣。
Atlantic Tropical Storm Karen faded into a tropical depression and was likely to dissipate soon, with winds of 35 mph about 495 miles east of the Leeward Islands.
太平洋熱帶風暴尅林已減弱爲熱帶氣壓，預計很快消散，它在裡沃島東以每小時35英裡的速度前進。

Of course, hurricane season starts June 1st and we still have a tropical depression -- the second named storm of the season.
WHITEHOUSE: Press Briefing
FEMA, through its regional officials in Atlanta, New York, and Denton, Texas, is also closely monitoring the remains of Tropical Depression Lee as it moves over southeastern states.
WHITEHOUSE: Press Briefing

an area of heavy rains and winds, the first stage in the development of a possible hurricane