Weather Parameters Defined

Data for the weather forecasts is gathered from several NOAA models and GFS models.

The following weather information is available for download.

Surface Temperature
    The temperature 2 meters above the ground.

Surface Pressure
    Surface pressure of the earth adjusted to mean sea level.

Wind Speed
    Mean wind speed.

Wind Direction(true)
    Mean wind direction, measured from true north.

Wave Height
    Mean height of the 1/3 highest waves measured from crest to trough.

Wave Direction(true)
    Mean wave direction, measured from true north.

Wave Period
    Mean period between significant waves.

Ice Pellets
    Precipitation in the form of ice pellets.

Snowing
    Precipitation in the form of snow.

Freezing Rain
    Precipitation in the form of freezing rain.

Raining
    Precipitation in the form of rain.

Visibility
    The range at which objects can be observed.

UV Index
    Indicates the danger of exposure to UV radiation.

Dew Point
    Temperature at which water in the atmosphere will condense given the current humidity level.

Convective precipitation
    The precipitation rate over the user-selected Display Frequency, expressed in millimeters.

Convective Cloud Cover
    The percentage of conventice cloud cover only (not all types of clouds).

Atmospheric Instability
    Expressed on a scale of 6+ Very Stable Conditions to 6- Very Unstable, Severe Thunderstorms Likely

Perceived Temperature
    The 'feels like' temperature given the relative humidity.

Thunderstorm Probability
    A composite estimate of the probability of thunderstorms.