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Tuesday, 17 February 2009 09:33 |
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Notes:
Average wind speed is the average taken over a 5 minute period with a 1 second sampling interval (300 samples).
Gust is the maximum 5 second averaged wind speed (60 samples) taken over the 5 minute sampling period.
Wind Direction is the direction from which the wind is blowing in degrees True
Apparent Temperature adjusts the air temperature for the effects of wind (wind chill) or the effects of humidity (heat index) as follows:
- Wind Chill is calculated from the 2001 formula provided by the National Weather Service (DETAILS) and is only computed when the air temperature is below 65 degF and the wind > 3 mph.
- Heat Index is also calculated using a NWS formula (DETAILS) and is only determined when the air temperature exceeds 75 degF and humidity > 40%.
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Last Updated on Thursday, 01 April 2010 20:23 |
