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Tropical Cyclone BasicsRelated Terms
13 in category
In Context
At this stage the system already has a closed circulation, but rainfall is often more disruptive than wind. Tropical depressions can still trigger flooding and landslides even without strong winds.
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Extratropical Cyclone
An extratropical cyclone is a storm system that draws its energy from temperature contrasts between air masses rather than warm ocean water, unlike a tropical cyclone.
Low Pressure Area (LPA)
A low pressure area, or LPA, is a region where atmospheric pressure is lower than its surroundings, often the earliest stage PAGASA flags before a system strengthens into a tropical depression.
Post-Tropical Cyclone
A post-tropical cyclone is a former tropical cyclone that has lost its tropical characteristics, such as a warm core, but can still produce heavy rain and strong wind.
Remnant Low
A remnant low is what remains of a tropical cyclone after its organized circulation and rain bands have broken down, though the low pressure center may persist.
Severe Tropical Storm
A severe tropical storm has maximum sustained winds between 89 and 117 km/h, one step below typhoon strength.
Super Typhoon
A super typhoon is PAGASA's classification for a typhoon with maximum sustained winds exceeding 220 km/h.
Tropical Cyclone
A tropical cyclone is a rotating low pressure weather system that forms over warm ocean water and draws its energy from heat released as moist air rises and condenses.
Tropical Cyclone Bulletin
A tropical cyclone bulletin is PAGASA's regularly updated advisory covering a storm's position, intensity, forecast track, and wind signals in effect.
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This definition is part of the azifind.com Typhoon Wiki, informed by PAGASA and the World Bank/GFDRR catastrophe risk data used across our province pages. View all Typhoon Wiki terms →