46
At temperatures greater than 80°F, the heat index is displayed, as
shown in the National Weather Service Heat Index Table below:
Figure 49
When the temperature is between 40°F and 80°F, the OUT temperature
is displayed (Feels Like temperature is the same as OUT temperature).
The concept of apparent temperature (AT)
is a linear regression that
is not restricted, and is more appropriate to outside conditions because
it includes wind.and was intended as an assessment of what exposed
body surfaces feel like in cold, windy conditions
Regression equations of this universal scale are formulated for indoors,
outdoors in shade but exposed to wind, and outdoors exposed to wind
and solar radiation. Of these, outdoors in shade but exposed to wind,
has been chosen as most informative.
15.5 Pressure Threshold Setting
The pressure threshold (the negative or positive rate of change of
pressure signifying a change in the weather) can be adjusted from 2
mbar/hour to 4 mbar/hour (default level 2 mbar/hour).
The lower the level pressure threshold setting, the higher sensitivity for
weather forecast changes. Locations that experience frequent changes
in air pressure require a higher setting compared to locations where the
air pressure is typically stagnant.
