The visibility is measured with a "Present Weather Sensor" (Biral SWS100) by scattering an infrared light signal. The detection of visibility is mainly used to detect the presence and density of fog.

The 12 hour Surface Analysis map shows current weather conditions, including frontal and high/low pressure positions, satellite infrared (IR) cloud cover, and areas of precipitation. A surface ...

I have always enjoyed having the current temperature in the menu bar on my Mac ... I wanted to take advantage of the fact that we now own an outdoor HomeKit sensor — the Eve Weather — and display the ...

The suprathermal ion sensors "will provide critical data to NOAA's Space Weather Prediction Center" that "issues forecasts, warnings and alerts that help mitigate space weather impacts," Jeremy ...