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Get the Hilo, HI local weather forecast by the hour and the next 10 days.
While some winters occur without a single Kona storm, other winters see a high of four or five. Hawaii typically experiences two to three annually [5] between October and April. [6] The cyclone events for Hawaii can be long-lived, affecting the state for a week or more. [7] Kona lows produce a wide range of weather hazards for Hawaii.
Ridge line extending to the left of the high pressure center (H). In meteorology a ridge or barometric ridge is an elongated area of relatively high atmospheric pressure compared to the surrounding environment, without being a closed circulation. [1] It is associated with an area of maximum anticyclonic curvature of wind flow.
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa ), which is equivalent to 1,013.25 millibars , [ 1 ] 760 mm Hg , 29.9212 inches Hg , or 14.696 psi . [ 2 ]
A col, also called saddle point or neutral point, is in meteorology, the point of intersection of a trough and a ridge in the pressure pattern of a weather map. It takes the form of a saddle where the air pressure is relatively higher than that of the low-pressure regions, but lower than that of the anticyclonic zones. [1]
Hawaii lies in the central Pacific, where about four or five tropical cyclones appear each year, although as many as fifteen have occurred, such as in the 2015 season; rarely do these storms actually affect Hawaii. Tropical cyclone records were not kept before the 1950s. Earlier windstorms that struck Hawaii were not labeled as hurricanes. [1]
Barograph – an aneroid barometer that records the barometric pressure over time and produces a paper or foil chart called a barogram; Barometer – an instrument used to measure atmospheric pressure using either water, air, or mercury; useful for forecasting short term changes in the weather
Hurricane Iselle was the strongest tropical cyclone to make landfall on the island of Hawaii in recorded history. The tenth named storm, fifth hurricane, and fourth major hurricane of the 2014 hurricane season, Iselle developed from an area of disturbed weather southwest of Mexico on July 31, 2014.