Case studies Imagery and case studies of weather phenomena and environmental events observed by EUMETSAT's fleet of weather satellites. Sort Refine results Categories Weather Data Meteosat Tags MSG Europe Date 2013 SHOW ALL Sort by Start Date Order Ascending Descending 1 result Case study 7 July 2013 18:00 UTC Using HRV for fog monitoring HRV can monitor fog & fog initiation, with a threshold for air turbidity similar our eye.