Northern Territory directory (1800 061 438) contains:
- pollfax numbers for an increasing number of forecasts, warnings and products pertaining to the Northern Territory
Telephone Weather Services ...
norther - A northerly wind; in general, a cold windstorm from the north. The term has several specific applications: 1) In the southern United States, especially in Texas (Texas norther), in the Gulf of Mexico, ...
Northern Lights - see Aurora Borealis
Nowcasting - short-term weather forecasting for the near future, generally from minutes up to a few hours in the future ...
Norther A cold strong northerly wind in the Southern Plains of the United States, especially in Texas, which results in a drastic drop in air temperatures. Also called a Blue Norther. (Glossary of Weather and Climate) ...
Northern Lights
Common name for Aurora Borealis; the luminous, radiant emission from the upper atmosphere over middle and high latitudes, and centred around the earth's magnetic poles.
Northern Hemisphere: the half of the earth located above the equator, from 0° to the North Pole.
Norther
A strong, cold northerly wind in various parts of the Northern Hemisphere.
Ozone
Triatomic form of oxygen.
BLUE NORTHER- A term used for a strong cold front in the southern plains of the United States and drops temperatures very quickly and has strong gust winds just behind the front.
BLUE NORTHER Refers to a swift-moving cold frontal passage in the southern Great Plains, marked by a dark, blue-black sky with strong wintery winds from the northwest or north and temperatures that may drop 20°F to 30 ...
[edit] Northern Annualar Mode (NAM) or Arctic Oscillation (AO)
The NAM, or AO, is defined as the first EOF of northern hemisphere winter SLP data from the tropics and subtropics.
5. Northern & Southern Hemispheres - NWS
Hurricane Hunters
1. "Hurricane Hunters Home Page" - Air Force Reserve ...
California norther"See norther.
California plotting position"For the rth ranked datum (from largest to smallest) from a sample of size n, the quotient r/n.
Taiga The northern coniferous forest; also a name applied to the subarctic climate.
Term used in the northern hemisphere for a tropical cyclone.
Tropics
The region of the earth located between 23.5° North and 23.5° South.
The areas in the northern and southern hemispheres between the tropics and the Arctic and Antarctic circles.
Millibar
A metric unit of air pressure measurement equal to one hectapascal.
Those who live in northern portions of the United States expect cold weather during the winter months. These conditions usually result from the invasion of cold arctic air masses that originate from the snow covered regions of northern Canada.
Also known as the northern lights; the luminous, radiant emission from the upper atmosphere over middle and high latitudes, and centred around the earth's magnetic poles.
CycloneAn area of low pressure around which winds blow counterclockwise in the Northern Hemisphere. Also the term used for a hurricane in the Indian Ocean and in the Western Pacific Ocean.
For example, in the Northern Hemisphere, winter is said to begin on the winter solstice and end on the vernal equinox when spring begins, covering the months of December, January, and February.
* Pacific - (HI, Guam, etc) - Sustained winds 25 knots or greater and seas 10 feet or greater; except in Guam and the northern Mariana Islands where it is sustained winds 22 to 33 knots and/or combined seas of 10 feet or greater.
When these products break down they destroy stratospheric ozone, creating the Antarctic Ozone Hole in the Southern Hemisphere spring (Northern Hemisphere autumn).
It primarily affects weather patterns and sea surface temperatures in the Pacific Northwest, Alaska, and northern Pacific Islands.
AnticycloneA large-scale circulation of winds around a central region of high atmospheric pressure, clockwise in the Northern Hemisphere, ...
Wadi A valley, gully, or streambed in northern Africa and southwestern Asia that remains dry except during the rainy season. A stream that flows through such a channel. Wadi gauge Same as river gauge or stream gauge.
Left MoverA thunderstorm which moves to the left relative to the steering winds, and to other nearby thunderstorms; often the northern part of a splitting storm.
The magnitudes of some volcanic eruptions in the Northern Hemisphere have been estimated from the acidity of annual layers in ice cores taken in Greenland. This methodology is sometimes referred to as acidity signal or acidity record.
The Polar Front Jet: As its name implies, this jet stream is associated with the marked discontinuity found at the boundary of well defined air masses - polar to the north/sub tropical to the south (in the northern hemisphere), ...
Hurricanes occur along the western boundaries of the Atlantic and Pacific oceans, in both northern and southern hemispheres, except for the South Atlantic, which has no hurricanes.
In the northern hemisphere that is generally from the NE, while in the southern hemispere the trade winds blow from the SE. The trade winds are present over all the oceans except the Indian Ocean, north of the equator.
Above 24,000 feet, the AWC provides warnings of dangerous wind shear, thunderstorms, turbulence, icing and volcanic ash for the Northern Hemisphere from the middle of the Pacific Ocean eastward to the middle of the Atlantic Ocean.
As cold, arctic air moves down and over the United States from the colder northern regions, large bodies of water are generally warmer than the air moving over them.
It is strongest during a Northern Hemisphere winter and early spring, centered over Iceland and southern Greenland, and is the dominate weather feature in the area.
Summer Solstice: The date on which the sun reaches the greatest distance north (in the Northern Hemisphere) or south (in the Southern Hemisphere) of the celestial equator.
Lamb Storm, Lamb-showers, or Lamb-blasts Our April snow showers, not uncommon in northern Minnesota, do not have a colloquial name associated with them. But they certainly do in England and Scotland.
Criteria: Approximately 6 inches of snow is expected in 12 hours or less across Northern Ohio, and 4-5 inches in 12 hours across Central and Southern Ohio; ...
Solstice The point in time when the vertical rays of the Sun are striking either the Tropic of Cancer (summer solstice in the Northern Hemisphere) or the Tropic of Capricorn (winter solstice in the Northern Hemisphere).
as viewed from above, the circulation is counterclockwise in the Northern Hemisphere, clockwise in the Southern Hemisphere, undefined at the Equator.
The first is global models, which focus on the entire northern hemisphere. The second is national models, which focus on the USA. The third is regional models.
Aurora Borealis - It's often called the "northern lights". It occurs 50 to 100 miles above the earth, when energetic particles from a solar storm cause the gases in the upper atmosphere to glow. Auroras can last between a few minutes to several hours.
Solstice: Either of the two times per year when the sun is at its greatest angular distance from the celestial equator: about June 21 (the Northern Hemisphere summer solstice), when the sun reaches its northernmost point on the celestial sphere, ...
The term hurricane is used for Northern Hemisphere cyclones east of the International Dateline to the Greenwich Meridian. It has a diameter of 250 to 500 miles and a cyclonic circulation typically extending to near 50,000 feet.
This inflow of air toward the low will be affected by the Earth's rotation (see Coriolis force) and will cause the air to spiral inward in a counterclockwise direction in the northern hemisphere.
CLOSED LOW A region of low pressure distinguished by a center of counterclockwise circulation (in the Northern Hemisphere), and is surrounded by one or more isobars or height contours.
These systems usually bring cool, breezy weather to Northern and Central California, but since the associated winds don't pass over the ocean, an inside slider normally produces only light precipitation, if any.
counterclockwise (in the Northern Hemisphere) as would be seen from above.
Generally, there are no more than about five longwave troughs around the Northern Hemisphere at any given time. Their position and intensity govern general weather patterns (e.g., hot/cold, wet/dry) over periods of days, weeks, or months.
It is seen as a bright display of constantly changing light near the magnetic poles of each hemisphere. In the Northern Hemisphere, it is known as the aurora borealis or Northern Lights, and in the Southern Hemisphere, ...
Aurora Glowing light display in the nighttime sky caused by excited gases in the upper atmosphere giving off light. In the Northern Hemisphere it is called the aurora borealis (northern lights); in the Southern Hemisphere, ...
Tail Cloud - A low tail-shaped cloud extending outward from the northern quadrant of a wall cloud. Motions in the tail cloud are toward the wall cloud with rapid updraft at the junction of tail and wall cloud.
CHINOOK A warm, dry wind that blows along the east slopes of the northern Rocky Mountains.
CIRRIFORM - High altitude ice clouds with a very thin wispy appearance.
CIRROCUMULUS - Cirrus clouds with vertical development.
Coriolis Effect-The way Earth's rotation make winds in the Northern Hemisphere curve to the right and winds in the Southern Hemisphere curve to the left.
Cyclone-A swirling center of low air pressure.
Buys Ballot's Law - With your back to the wind in the Northern Hemisphere, low pressure will be to your left and high pressure to your right. The reverse is true in the Southern Hemisphere.
Rotation in the opposite sense from Earth's rotation, i.e. clockwise in the Northern Hemisphere as seen from above. The opposite of cyclonic rotation.
Weather Glossary Search Page
Weather Glossary Source List ...
HIGH: An area of high pressure around which the wind blows clockwise in the Northern Hemisphere and counterclockwise in the Southern Hemisphere.
HUMIDITY: Generally the measure of the water vapor content of the air.
Anticyclonic - Rotation opposite the earth's rotational sense. In the Northern Hemisphere, clockwise rotation is anticyclonic. Wind in a ridge or around a high; supergeostrophic.
Anticyclone - An area of high pressure. Winds blow in a clockwise direction in the Northern Hemisphere and in a counter clockwise direction in the Southern Hemisphere. Fair weather is associated with an anticyclone.
cyclone- a rotating mass of air with minimum pressure in its center. In the Northern Hemisphere, such winds move counterclockwise, and in the Southern Hemisphere, clockwise.
CYCLONE - A rotating region of low atmospheric pressure. In the northern hemisphere, cyclones rotate counter-clockwise. They rotate clockwise in the southern hemisphere. The word has Greek origins.
Continental polar air (cP) Relatively dry air mass that develops over the northern interior of North America; it is very cold in winter and relatively mild in summer.
Anticyclonic Rotation - Rotation in the opposite sense as the Earth's rotation, i.e., clockwise in the Northern Hemisphere as would be seen from above. The opposite of cyclonic rotation.
 See also: Weather, Air, Temperature, Pressure, Surface
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