Winter Storm Moves In Ahead Of Holiday
Avalanche Warnings Issued For San Juans, Grand Mesa
DENVER -- Winter storms are pounding Colorado's mountains and more snow is expected.
WINTER KILLS...Unpredictable weather is often the rule rather than the exception, particularly during the winter.
....Winter Watch For Kids....
Winter Weather Safety
Types of Winter Weather AdvisoriesHow to Get a Car Ready for Snow DrivingHow to Prepare for a Winter Storm
More Weather FAQs ...
winter monsoon"A monsoon resulting from the circulation induced by temperature contrasts between a cold continent and a warm ocean as occurs during the winter season.
Winter & Fall
Blizzard Warning - Issued for winter storm with sustained or frequent winds of 35 mph or higher with considerable falling and/or blowing snow that frequently reduces visibility to 1/4 of a mile or less.
Winter Weather
A Frosty Morning
Cold Outbreaks: The North Wind Doth Blow
Arctic Outbreaks
Break Out: Arctic Outflow Winds on the Pacific Coast
Hard Rains Will Fall
Ice Storms: Hazardous Beauty
Freezing Rain In The US West
Blizzard! ...
Winter Solstice - the solstice when the sun is lowest in the sky; the first day of winter
Work - an energy form arising from the displacement of an object by a force; the conversion of potential energy to kinetic energy.
winter - Astronomically, between the winter solstice and vernal equinox in the Northern Hemisphere, and the summer solstice and autumnal equinox in the Southern Hemisphere; the coldest season of the year; ...
Winter
The three coldest months June, July and August (in the southern hemisphere).
Water vapour pressure ...
Winter Storm Warning- Issued if the event will be entirely heavy snowfall.
WINTER WEATHER TERMS:
1. Snow - Refers to a steady fall and accumulation of snow for several hours or more. It may be modified by terms such as "light," "intermittent," or "occasional" to indicate intensity or periodic snow.
WINTER Astronomically, this is the period between the winter solstice and the vernal equinox. It is characterized as having the coldest temperatures of the year, when the sun is primarily over the opposite hemisphere.
Winter Storm Watch Issued when conditions are favorable for hazardous winter weather conditions to develop over part or all of the forecast area in the next 6-36 hours, but the occurrence is still uncertain.
Winter
Typically the coldest season of the year during which the sun is farthest from overhead. In the Northern Hemisphere, winter customarily includes the months of December, January and February.
Winter Pool ...
Winter Storm Warning: This product is issued by the National Weather Service when a winter storm is producing very heavy snow. The criteria for this warning can vary from place to place.
WINTER STORM: A heavy snow event. In the Sierra Nevada below 7000 feet, a snow accumulation of 6 inches/12 hrs or 12 inches/24 hrs; and above 7000 feet, 8 inches/12 hrs or 18 inches/24 hrs.
WINTER STORM: A heavy snow event.
ZULU: Equivalent to UTC or Greenwich Mean Time (GMT).
1 Original version of this glossary was developed by the author, Jan Null, 1996.
2 Current update February 2003.
Winter solstice Approximately December 22 in the Northern Hemisphere when the sun is lowest in the sky and directly overhead at latitude 23 deg S,the Tropic of Capricorn.
Winter storms of 2007-08
2007-08 South-West Indian Ocean cyclone season
2008 Pacific typhoon season
Tornadoes of 2008 ...
Winter Storm Warning - It's issued when hazardous winter weather is occurring or is likely over a specific area. Hazardous winter weather includes heavy snows, blizzards, ice storms, freezing rain, freezing drizzle and sleet.
Normal Winter El Niño Winter Images by: DAS, University of Washington
The amplification led to a warming in the near-Pacific regions of North America, extending from Alaska to the northern Plains of the United States (orange shading).
Issued for winter storms with sustained or frequent winds of 35 mph or higher with considerable falling and/or blowing snow that frequently reduces visibility to 1/4 of a mile or less. These conditions are expected to prevail for a minimum of 3 hours.
WINCE - WINter Cloud Experiment
WSGC - Wisconsin Space Grant Consortium
WUPPE - Wisconsin Ultraviolet PhotoPolarimeter Experiment ...
Bitterly coldIn winter, bitterly cold or very cold, refers to more than seven degrees Celsius below normal.
Classified as katabatic, it occurs most often during the winter and it is an example of a foehn wind. SARGASSO SEA An area of the North Atlantic Ocean between Bermuda and the Azores.
It is a fairly common wintertime phenomena in the mountainous west and in parts of Alaska. These winds develop in well-defined areas and can be quite strong.
Stable Boundary LayerThe stably-stratified layer that forms at the surface and grows upward, usually at night or in winter, as heat is extracted from the atmosphere's base in response to longwave radiative heat loss from the ground.
Typically used during winter weather, it is a "tongue" of relatively warm/moist air aloft that wraps around to the north and west of a mature cyclone. It is best analyzed between 750-550 milibars using equivalent potential temperature (theta-e).
For example, a long-range forecaster predicting conditions for the upcoming winter may make comparisons to analog seasons in which meteorological factors were similar to those of the upcoming season.
Although winter doesn't necessarily mean snow, that's the element that interests a great many people dipping in to the newsgroup.
Fallthe season of the year which is the transition period from summer to winter occurring as the sun approaches the winter solstice. In the Northern Hemisphere, fall customarily includes the months of September, October and November.
It is a method for forecasting the amount of snowfall expected from a given winter storm system.
In American folklore, a day that is popularly supposed to provide the key to the weather for the remainder of the winter.
The polar front jet stream often has a speed exceeding 30 m/s, sometimes up to 75 m/s (270 kmph) in the winter, blowing from west to east in both hemispheres.
The primary cause for these seasonal winds is the much greater annual variation of temperature over large land areas compared with neighboring ocean surfaces, causing an excess of pressure over the continents in winter and a deficit in summer, ...
These winter weather events are notorious for producing heavy snow, rain, and tremendous waves that crash onto Atlantic beaches, often causing beach erosion and structural damage.
The season of the year which occurs as the sun approaches the winter solstice, and characterized by decreasing temperatures in the mid-latitudes.
Inversions are common in winter when there is a large anticyclone present. Subsiding air in the anticyclone warms as it descends and produces a layer of warmer air around 1000-2000m above the surface.
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).
Blizzard
Violent winter storm, lasting at least 3 hours, which combines below freezing temperatures and very strong wind laden with blowing snow that reduces visibility to less than 1 km.
Blizzard- includes winter storm conditions of sustained winds greater than thirty-five mph that cause major blowing and drifting of snow, reducing visibility to less than one-quarter mile.
Home Photos By Year Winter Weather Links Contact About Aurora Joel's Forecast Page American Bald Eagle Info
INFORMATION
CLASSIC SUPERCELL DIAGRAM ...
In winter, it often rapidly develops and causes problems for a large portion of the eastern United States. In Spring, it helps with severe weather development in the Plains. Commonly develops from the LEE TROUGH east of the Rocky Mountains.
From that solstice to the autumnal equinox is Summer (June21-September 22). From that equinox to the winter solstice is Autumn (September 22-December 22). From that solstice to the vernal equinox is Winter (December 22-March 21).
Arctic air—An air mass with characteristics developed mostly in winter over Arctic surfaces of ice and snow. Arctic air extends to great heights, and the surface temperatures are basically, but not always, lower than those of polar air.
BUST- A situation when a certain type of weather (often severe weather or winter weather) is expected but nothing happens.
CAA- Cold Air Advection, The movement of colder air horizontally toward a fixed point on the earth's surface.
The term originally referred solely to the winds of the Arabian Sea which blow for about six months from the north-east (in winter) and for six months from the south-west (in summer), but now is also used for other marked seasonal winds.
Use a weather map to look up the temperatures of cities around the world and discover how hot each gets in the summer and how cold each gets in the winter. Compare these figures with your town.
Polar vortex - cyclonic motion near the pole. Very cold, especially in winter.
Radar - a radio device that calculates the distance to objects, such as storms, within its range.
Arctic air (a) A very cold and dry air mass that forms primarily in winter over the Arctic Basin, Greenland, and the northern interior of North America.
Aleutian Low - A large cell of low' pressure centered over the Aleutian Islands of the North Pacific during the winter.
Altimeter - An aneroid barometer calibrated to indicate altitude instead of pressure.
Continental climate-The climate of the centers of continents, with cold winters and warm or hot summers.
[Thunderstorms & Tornadoes] [Hurricanes] [Blizzards & Winter Weather] [Clouds] ...
Note that in the winter months, some radar sites will go to Clear Air mode even if there is light snow in the area.
Localized snowstorms that form on the downwind side of a lake. Such storms are common in late fall and early winter near the Great Lakes as cold, dry air picks up moisture and warmth from the unfrozen bodies of water.
Land breeze(6) ...
BLACK ICE - thin, new ice that forms on fresh water or dew covered surfaces; it is common on roadways during the fall and early winter and appears "black" because of its transparency.
WARNING: A public notice issued by the National Weather Service when a certain hazard (tornado, severe thunderstorm, flood or winter storm) is imminent.
jet stream- fast-moving currents of air reaching 180 mph (290 kmph ) in the troposphere - 30,000 to 35,000 feet up (9,144 to 10,668 meters) - that can strengthen and shift low-pressure systems. In winter, currents may shift toward the equator; ...
a persistent wind throughout a season but often refers to the heavy rains that accompany them. Best known is the summer southwesterly monsoon over India followed by a northeasterly monsoon over Southeast Asia in winter.
Aurora Borealis - 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. These silent fireworks are often seen on clear winter ...
 See also: Temperature, Weather, Air, Surface, Water
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