Webtags (preserving history): Difference between revisions

Note this apparent temperature formula uses Celsius for temperature and '''metres per second''' for wind speed. You will need to do the appropriate conversions from the quoted recent history tags if you use different units. The Australian Apparent temperature formula is same for Cumulus 1 and MX:

Feels Like as implemented at version 3.6.10 (see [[#Feels_Like|Feels Like section below Current condition web tags]]) reportsuses exactly same as wind chillCelsius for temperaturestemperature and '''belowkm per hour''' 10°Cfor wind speed. Again, you will need to do the appropriate conversions from the quoted recent history tags if you use ordifferent 50°F:units.

wind_pow = Math.pow(wind_km_h<#RecentWindSpeed h=3>, 0.16);

WC = (13.12 + 0.1625 * tempDegC<#RecentOutsideTemp h=3>) - (11.37 * wind_pow) + (0.3965 * tempDegC<#RecentOutsideTemp h=3> * wind_pow);// Brackets used to ensure "+" is interpreted as addition not concatenation

For temperatures '''above''' 20°C or 68°F itFeels Like uses a different way to calculate apparent temperature that it uses at these higher temperatures (this formula only used for 3.6.10 onwards):

<pre>var actualVaporPress = (humVal<#RecentHumidity h=3>/100) * 6.112* Math.exp((17.62 *tempDegC <#RecentOutsideTemp h=3>)/(243.12 + tempDegC<#RecentOutsideTemp h=3>)) / 10.0; // Not same as at build 3084

if(wind_km_h<#RecentWindSpeed h=3> > 72) wind_km_h<#RecentWindSpeed h=3> =72;

AT= (1.04 * tempDegC<#RecentOutsideTemp h=3>) + (2 * actualVaporPress) - (0.1805553 * wind_km_h<#RecentWindSpeed h=3>) - 2.7;</pre>

<pre>app_temp_mult = (<#RecentOutsideTemp tempDegCh=3> - 10) / 10;