Assertion: extratropical cyclone | /r/HasProperty | low-pressure areas
Facets:
Source sentences:
text: Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth.
text: Extratropical cyclones are low-pressure systems that form outside of the tropics in response to a chronic instability of the westerly winds.
text: Extratropical cyclones are areas of low pressure which exist at the boundary of different air masses.