central pressure"At any given instant, the atmospheric pressure at the center of a high or low; the highest pressure in a high, the lowest pressure in a low.
CENTRAL PRESSURE
The atmospheric pressure at the center of a high or low. It is the highest pressure in a high and the lowest pressure in a low, referring to the sea level pressure of the system on a surface chart.
The central pressure determines the maximum pressure gradient, which must increase inwards to balance the increasing centrifugal force.
Also, the central pressure of a hurricane is so low that the relative lack of atmospheric weight above the eye and eye wall causes a bulge in the ocean surface level. This effect is similar to using a straw.
A decrease in the central pressure of a surface low pressure system. The storm is intensifying.
Deformed Ice ...
A decrease of the central pressure of a depression.
Depression
An area of low atmospheric pressure.
A general increase in the central pressure of a low pressure system.Fire WindA thermally driven wind blowing radially inward toward a fire, ...
Deepening A decrease in the central pressure of a pressure system. Usually applied to a low rather than to a high.
deepening - A decrease in the central pressure of a pressure system as depicted on a constant-height chart, or an analogous decrease in height on a constant-pressure chart; the opposite of filling.
Because of its broad area and range of central pressure, it is an area where migratory lows tend to slow down and deepen.
Filling:When central pressure of a cyclone rises.
F-Scale:The F-scale was devised by Professor T. Theodore Fujita of the University of Chicago.
This 6 point scale depicts the intensity for rating the strength and damage from Tornadoes.
An extratropical cyclone (low) where the central pressure drops by at least 1hPa per hour for 24 hours. Bombs occur where there is an upper level trough and a strong low level moisture and temperature gradient.
Cyclone: Distribution of the atmospheric pressure in which there is a lower central pressure relating to adjacent areas. It is characterized in a synoptic chart as a system of closed isobars, involving a low central pressure.
75 mb/hr or 42 mb for 24 hoursRapidly IntensifyingAny maritime cyclone whose central pressure is dropping, or is expected to drop, at a rate of 1 MB per hour for 24 hours. RawinsondeA radiosonde that is tracked to measure winds.
AZORES HIGH A semi-permanent, subtropical area of high pressure in the North Atlantic Ocean that migrates east and west with varying central pressure. Depending on the season, it has different names.
In both winter and summer the central pressure lies around 1024 mbar (hPa), but conditions are more variable in winter.
Bermuda High A semi-permanent, subtropical area of high pressure in the North Atlantic Ocean off the East Coast of North America that migrates east and west with varying central pressure. Depending on the season, it has different names.
However, the number of intense cyclones (minimum central pressure less than 970 hectopascals) appears to have increased slightly.
BOMB- A low pressure system that decreases in central pressure by at least 24 millibars in a 24 hour period.
Saffir-Simpson Hurricane Intensity Scale Scale based on central pressure, and specifying a range of wind speed, height of storm surge, and damage potential; 1 is minimal, 5 is most intense.
Bomb Cyclone - An extratropical area of low pressure in which the central pressure drops at least 24 millibars in 24 hours.
Saflir-Simpson scale A scale relating a hurricane's central pressure and winds to the possible damage it is capable of inflicting.
FILLING - Term applied to the weakening phase of a low pressure system where the central pressure of the system is rising.
FIRING - Initiation of convective storms, or initial development of a mesoscale weather system.
Typically the pressure gradient increases (central pressure drops), winds strengthen, and clouds become more pronounced during this phase.
The scale of numbers are based on actual conditions at some time during the life of the storm. As the hurricane intensifies or weakens, the scale number is reassessed accordingly. The following table shows the scale broken down by central pressure, ...
When the inner eyewall weakens, the tropical cyclone weakens (in other words, the maximum sustained winds weaken and the central pressure rises.) The outer eyewall replaces the inner one completely at the end of the cycle.
Azores HighAlternate term for Bermuda High - a semi-permanent, subtropical area of high pressure in the North Atlantic Ocean off the East Coast of North America that migrates east and west with varying central pressure.
 See also: Pressure, Surface, Temperature, Air, Water
  
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