blocking - 1. The obstructing, on a large scale, of the normal west-to-east progress of migratory cyclones and anticyclones.
BLOCKING PATTERN- A situation in which the upper tropospheric flow becomes highly meridional and stagnant. Two common blocking patterns are the omega block and the rex block. Click here for more information on atmospheric blocking.
BLOCKING HIGH The development of a warm ridge or cutoff high aloft at high latitudes which becomes associated with a cold high at the surface, causing a split in the westerly winds.
Blocking system A cutoff cyclone or anticyclone that blocks the usual west-to-east progression of weather systems.
Blocking high
An intense or strong high pressure system that occasionally forms much further south than usual and remains almost stationary for days, weeks or even months.
Blocking High- A high pressure area (anticyclone), often aloft, that remains nearly stationary or moves slowly compared to west-to-east motion. It blocks the movement eastward movement of low pressure areas (cyclones) at its latitude..
BLOCKING - The inhibition of the forward progression of one weather system by another. Commonly a high pressure system that blocks or deflects the motion of an advancing low pressure area is called a BLOCKING HIGH.
A blocking pattern where there is an upper level high located directly north of a closed low.
RFC ...
Rex Block A blocking pattern where there is an upper level high located directly north of a closed low.
Omega High: A blocking ridge of high pressure that forms in the middle or upper troposphere. It looks like the Greek letter omega.
Radiosonde transmitter The component of the radiosonde which includes the modulating blocking oscillator and the radio-frequency carrier oscillator.
A strong blocking anticyclone is located in the Gulf of Alaska with a strong polar jet stream around its northern flank.
Extreme lake effect snow blocking roads. 4. Lake Effect snow for Western New York. ART/BUF/ROC/SYR/BGM 5. Lake Effect snow/storms. 6. Lake Effect storms over the Great Lakes. 7. Snow Fence. Used to deflect snow. 8. Snow: Fetch. To pick up moisture.
Again, sand on the tracks disrupted train travel, this time blocking the line from Peterborough to Mannahill.
It is an example of a blocking high. OPAQUE A condition where a material, such as a cloud, blocks the passage of radiant energy, especially light. Opaque sky cover refers to the amount of sky cover that completely hides all that might be above it.
CUT-OFF HIGH A warm high which has become displaced and is on the polarward side of the jet stream. It occurs mostly during the spring and is most frequent over northeastern Siberia, Alaska, and Greenland. It is an example of a blocking high.
1800s, with an estimated increase of 10 percent since 1958 (burning fossil fuels is the leading cause of increased CO2, deforestation the second major cause). The increased amounts of CO2 in the atmosphere enhance the greenhouse effect, blocking heat ...
A gorge can be particularly destructive during the onset of winter conditions by blocking the stream or river and allowing surroundings lowlands to flood, or the shoreline to be scoured away by moving ice or depris.
It is an example of a blocking high.Onshore BreezeA wind that blows from a body of water towards the land. Also known as a seabreezeOnshore FlowOccurs when air moves from sea to land, and is usually associated wtih increased moisture.
building too low, too close to the channel, or blocking flood flows);
2) Development in the watershed that increases flood flows and creates a larger floodplain, or;
3) A combination of the previous two.
 See also: Weather, Water, Cloud, Temperature, Storm
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