Stargazing: Kamloops, BC
Current WeatherFri. Jun 1, 2012, 14:00 PDT Kamloops Airport
Partly cloudy
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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
: SE 20km/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.
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Wind gusts
: 41km/h
A sudden significant increase in, or rapid variation of wind speed. Usually a gust lasts less than twenty seconds.
- Sunrise
: 4:53
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
: 21:06
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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Humidity
: 49%
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
: 100.71 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
: 64.0 km
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
: 22000 ft
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: Fri, Jun 1, 2012, 14:32 PDT
Friday Evening
18
°C
Variable cloudiness
P.O.P.: 30%, Wind: S 15km/h
Friday Overnight
12
°C
Cloudy with clear breaks
P.O.P.: 30%, Wind: SW 10km/h
Moon Phases
Jun 4
Full Moon
Jun 11
Last Quarter
Jun 19
New Moon
Jun 26
First Quarter
Click here to calculate the sunrise, sunset, moonrise, moonset times and the seasonal calendar.
This Week in the Sky
A Swarm of Stars
Hanging high in the southeast skies Hercules is easy to hunt down thanks to four stars that make up the mythical strongman's torso. Within the constellation's keystone lies one of the greatest telescopic showpieces in the entire night sky; the Great Hercules Cluster or M13.
First discovered in 1714 by Sir Edmund Halley, the famous comet hunter, M13 is a globular cluster made up of a swarm of a half a million stars packed into a ball, stretching over 100 light years across. On a dark moonless night, away from city lights M13 can just be glimpsed with the naked eye, appearing as a faint, small, fuzzy patch. Binoculars will easily show it, and a small telescope will begin to resolve the edges of the cluster into individual stars.
Located 24,000 light years away, it is one of about 150 globular clusters scattered in a halo around the outside of our own Milky Way galaxy. The light from M13 that you see tonight left the cluster when Earth was still locked in its last ice age.
Current Earth View
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