blocking high

blocking high

[¦bläk·iŋ ′hī]
(meteorology)
Any high (or anticyclone) that remains nearly stationary or moves slowly compared to the west-to-east motion upstream from its location, so that it effectively blocks the movement of migratory cyclones across its latitudes. Also known as blocking anticyclone.
References in periodicals archive ?
Study researcher Regina Rodrigues, from the Federal University of Santa Catarina in Florianopolis, Brazil, explained that the atmospheric waves produced the so-called blocking high, a large area of high pressure, that stalled off the east coast of Brazil. 
A spokesperson for The Weather Channel said: "The overall pattern is for temperatures to remain below normal across the British Isles through the end of the month as we expect blocking high pressure to dominate across the north Atlantic to Greenland.
A spokesman said: "The overall pattern is for temperatures to remain below normal across the British Isles through the end of the month as we expect blocking high pressure to dominate across the north Atlantic to Greenland.
A spokesperson for theWeather Channelsaid: "The overall pattern is for temperatures to remain below normal across the British Isles through the end of the month as we expect blocking high pressure to dominate across the north Atlantic to Greenland.
The record low sunshine over Japan during August 20/7 was mainly attributed to a blocking high and Pacific-Japan pattern.
"Large blocking high pressure systems were the dominant feature of the summer.
There is an area of blocking high pressure sitting over the UK for more the past 10 days - and it doesn't look like it's going anywhere soon.
Right now there's a so-called 'blocking high' parked over Greenland that's causing the jet stream to shoot northward towards the North Pole east of Greenland, with a hair-pin southward turn over Europe.
A normal Atlantic low pressure in winter carries at least an inch of rain, but very often two as it runs into a blocking high pressure.
The block duration (BD) parameter was included via the criteria first established by [5, 22] and modified, whereby a blocking event is verifiable only if a blocking high pressure persists for a minimum of five days as evaluated by flow at the 500 mb level.
A spokesman said: "An area of blocking high pressure looks set to dominate and that could mean slow-moving features which bring the same type of weather for quite a persistent long period of time.
The choke is designed specifically for blocking high frequency AC current in the circuit, while allowing low frequency DC current to pass through it.