Weather: Sedgwick

This graph represents the current air temperature and dew point in degrees Celsius. When any of the values on these two lines approach or cross their maximum thresholds, horizontal yellow lines will appear. Similarly, if any of the values approach or cross their minimum thresholds, dark blue lines will appear. The dashed cyan line represents the values derived from subtracting the values of the dew point curve from the temperature curve. The threshold associated with this line will appear as a dashed dark blue line when any of the values cross or approach their minimum threshold for the allowed difference between the temperature and dew point. If any of these three lines cross their maximum or minimum thresholds it indicates that it was unsafe to open the dome at that time.

Barometric pressure, also called atmospheric pressure, is a measurement of the force per unit area exerted against a surface by the weight of air above that surface from the atmosphere. Generally, the higher in elevation a surface is, the less barometric pressure it will have.

Relative humidity is a percentage representation of the amount of moisture present in the air. If a yellow horizontal line appears at the top of the graph, this means that one of the data points in this time range came within 10 percent of, or surpassed, the upper limit threshold of the amount of moisture acceptable to open the telescope dome safely.

The wind speed is measured in meters per second. If a yellow horizontal line appears at the top of the graph, this means that one of the data points in this time range fall within 10 percent of, or surpassed, the upper limit threshold for the max wind speed acceptable to open the telescope dome safely.

The wind rose plot represents the wind data grouped by speed and direction from North. Each of the 16 triangles represents the percentage of the data that came from a specific direction. The color represents the speed, and the size of the color bar represents what percentage of the wind data was recorded at that speed.