WATER VAPOR

Precipitable Water Vapor

Forecast relative to the night starting on 2026/06/14 MST

Note: click on a figure to magnify the image. Date of figures refers to the start of night in MST.

PWV temporal evolution between the sunset and the sunrise. Astronomical dusk and dawn are shown too. PWV is integrated in the [0-20km] range above ground level (a.g.l.) and centered on the LBT. On the x-axis is time in UT (bottom), in MST (top). Raw data points frequency is two minutes. Data points are re-sampled at a temporal frequency of 20 minutes after a 1-hour moving average. The error bars are the sigma over the 20 minutes sampling, computed before the moving average.

Fig. 1: Precipitable water vapor temporal evolution between the sunset and the sunrise