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A trough is an elongated region of relatively low atmospheric pressure without a closed isobaric contour that would define it as a low pressure area. Since low pressure implies a low height on a pressure surface, troughs and ridges refer to features in an identical sense as those on a topographic map. Troughs may be at the surface, or aloft, at ...
In meteorology, a low-pressure area, low area or low is a region where the atmospheric pressure is lower than that of surrounding locations. It is the opposite of a high-pressure area . Low-pressure areas are commonly associated with inclement weather (such as cloudy, windy, with possible rain or storms), [ 1 ] while high-pressure areas are ...
Tropical Storm Dorian as a tropical wave just north of Puerto Rico on July 29, 2013.. A tropical wave (also called easterly wave, tropical easterly wave, and African easterly wave), in and around the Atlantic Ocean, is a type of atmospheric trough, an elongated area of relatively low air pressure, oriented north to south, which moves from east to west across the tropics, causing areas of ...
A popular type of surface weather map is the surface weather analysis, which plots isobars to depict areas of high pressure and low pressure. Cloud codes are translated into symbols and plotted on these maps along with other meteorological data that are included in synoptic reports sent by professionally trained observers.
Alongside a low-pressure trough passing through Vietnam, rains from the depression caused several regions in the southeastern parts of the nation to break unseasonal rain records for the month of February, with Ho Chi Minh City recording its heaviest rainfall in the past 20 years. In the town of Long Thanh, 175 mm (6.9 in) was recorded. [9]
Since the monsoon trough is an area of convergence in the wind pattern, and an elongated area of low pressure at the surface, the trough focuses low level moisture and is defined by one or more elongated bands of thunderstorms when viewing satellite imagery. Its abrupt movement to the north between May and June is coincident with the beginning ...
2022 Pacific typhoon season Season summary map Seasonal boundaries First system formed January 27, 2022 Last system dissipated December 12, 2022 Strongest storm Name Nanmadol • Maximum winds 195 km/h (120 mph) (10-minute sustained) • Lowest pressure 910 hPa (mbar) Seasonal statistics Total depressions 37 Total storms 25 Typhoons 10 Super typhoons 3 (unofficial) [nb 1] Total fatalities 498 ...
The North Luzon Trough is a major geological feature located off the northern coast of Luzon Island between the Manila Trench and the Vigan-Agao Fault in the Philippines. [1] It is a well-developed forearc basin formed in front of the Luzon Volcanic Arc , an island arc system. [ 2 ]