Atmospheric Weather Data

Air Temperature is measured in degrees Fahrenheit by a sensor located six feet off the ground.

Dew Point temperature is the temperature, measured in degrees Fahrenheit, at which the air is fully saturated with moisture. The dew point is a more useful measure of the moisture present, because it takes into consideration the air temperature. If you remember from science class, the amount of moisture air can hold decreases when it is cooled. As the air temperature drops there is a point at which the moisture in the air begins to condense and form fog, dew, or frost. That point is the dew point.

Barometric Pressure is the amount of downward force exerted by the weight of the air above us and is measured in inches of mercury.

Wind Speed is the average velocity at which the air travels over a one-minute period and is measured in nautical miles per hour (NM/H or knots). The main display is in miles per hour (mph) with the knots in parentheses.

Wind Direction is the average direction from which the wind is coming and is measured in degrees from north. The main display is given by an alphabetic code denoting the direction with degrees from north in parentheses.

Wind Gusts are the highest wind speed registered over the previous 10 minutes and is measured in nautical miles per hour (NM/H or knots). If no gusts are detected more than 5 NM/H faster than the average wind speed, this field is zero. The main display is in miles per hour (mph) with the knots in parentheses.

Visibility is the distance a person can see with normal vision, and is measured in miles.

Precipitation is any form of water, such as rain, snow, sleet, or hail, that falls to the earth's surface.

1st Cloud Layer is the height above the earth's surface of the lowest layer of clouds or obscuring phenomena that is reported as "broken," "overcast," or "obscuration," and not classified as "thin" or "partial."

| BACK |