Stargazing: Armstrong, BC
Current WeatherThurs. Feb 9, 2012, 23:00 PST Vernon
What’s this?
The swirl logo indicates that current sky conditions are not available from this location’s weather station, which was selected because it offers the most local weather readings.Sky conditions are available from weather stations that have on-site personnel, or equipment that provides automated evaluations. Not all weather stations have this capability.
The Weather Network is continually working to enhance the accuracy and relevance of local forecasts. Taking advantage of all available weather stations means better weather analysis and predictions for your location.
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Feels Like
: -
Refers to how the outdoor air is expected to feel in degrees Celsius when actual temperature and relative humidity are combined (see humidex) or when actual temperature and wind are combined (see windchill).
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Wind
: W 2km/h
Wind is the horizontal movement of air in relation to the earth's surface. Wind direction tells where the wind is blowing from. For example, a "north wind" is coming from the north and is blowing towards the south. There are four components of wind that are measured: direction, speed, character (i.e. whether it's a gust or a squall) and shifts.
- Sunrise
: 7:17
Sunrise occurs the instant the upper edge of the disk of the sun appears above the horizon. This time is given assuming that conditions are clear and the region is level. Depending on weather, local land formations and obstructions, the sun may not be visible at the exact time of sunrise.
- Sunset
: 17:05
Sunset occurs when the upper edge of the disk of the sun disappears below the horizon. This time is given assuming that conditions are clear and the region is level. Depending on weather, local land formations and obstructions, the sun may appear to set earlier than the official sunset time.
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Relative Humidity
: 100%
Relative humidity is a percentage of water vapour per area at a specific temperature. Relative humidity is calculated at all times of the year, but the humidex is usually only given in the warmer months from May to September.
Relative humidity can be calculated using various methods and instruments. It is a calculation to find out how many grams of water vapour can be held at a given temperature. Usually, the warmer the air, the higher its capacity for holding water vapour. Each specific temperature has a holding limit for water, and the actual amount of water held in the air at the time of measurement can be represented as a percentage. For example, if a parcel of air at 20ºC has a limit or capacity of 16 grams of water vapour and 16 grams of water vapour is measured, the air's holding capacity is at its maximum and the relative humidity (RH) of the air is said to be 100%. Take the same air with 8 grams of water vapour and your RH is 50%.
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Pressure
: 102.63 kPa
The force per unit area exerted by the weight of the atmosphere above a point on or above the earth's surface. Also known as atmospheric pressure or barometric pressure.
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Visibility
: -
Visibility is defined as the greatest distance an object can be seen and identified. It is usually a visual estimate and is reported as prevailing visibility -- the maximum visibility common to one half or more of the horizon circle. When visibility is uniform in all directions, prevailing visibility and visibility are the same. When visibility is not uniform in all directions, you can determine prevailing visibility by dividing the horizon circle into sectors of visibility. Estimate the highest visibility common to one half or more of the horizon circle.
The maximum visibility on a clear day is 11 kilometres (7 miles), after which a flat ground horizon will fall away to a point that surface conditions cannot be observed. In order to report visibility beyond this distance visibility markers are used. These markers are measured and could include mountains/hills, tree lines and microwave towers. The visibility is determined by the weather observer at an airport or weather station. The observer reports how far away objects can be identified without obstruction.
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Ceiling
: -
Ceiling is a measurement primarily used by the aviation industry. The ceiling is the height of the lowest layer of broken or overcast clouds. Ceiling is reported in feet, which is the standard for the aviation industry.
Clear Sky ForecastUpdated: Thurs, Feb 9, 2012, 20:55 PST
Thursday Overnight
0
°C
Mixed precip.
P.O.P.: 60%, Wind: SE 5km/h
Friday Evening
2
°C
Mixed precip.
P.O.P.: 60%, Wind: N 5km/h
Moon Phases
Feb 14
Last Quarter
Feb 21
New Moon
Feb 29
First Quarter
Mar 8
Full Moon
Click here to calculate the sunrise, sunset, moonrise, moonset times and the seasonal calendar.
This Week in the Sky
The Heavenly Hound
Winter skywatchers looking towards the low southern sky can always find companionship with the Great Dog constellation Canis Major and its lead star Sirius. The stars of Orion make for a great guidepost to find the Great Dog. Using Orion\'s belt of three stars, extend an imaginary line to the lower left and you will come across his canine companion heeling at his feet.
Sirius is one of our closest stellar neighbours at only 8.6 light years away, making it the not only the fifth closest star but the brightest. It is only outshined by the Sun, Moon and a couple of planets. A true powerhouse, Sirius is about twice the diameter of our Sun and pumps out about 23 times as much light.
Binocular users looking just below Sirius can catch sight of a sparkling open star cluster. This stellar family is made up of 80 orange giants that are less than 200 million years old. Visible to the naked eye from the countryside, M41 is located about 2400 light years from Earth and spans 25 light years across.
Current Earth View
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