  Precipitation nowcasting is a short-range forecast of rain/snow (up to 2
hours), often displayed on top of the geographical map by the weather service.
Modern precipitation nowcasting algorithms rely on the extrapolation of
observations by ground-based radars via optical flow techniques or neural
network models. Dependent on these radars, typical nowcasting is limited to the
regions around their locations. We have developed a method for precipitation
nowcasting based on geostationary satellite imagery and incorporated the
resulting data into the Yandex.Weather precipitation map (including an alerting
service with push notifications for products in the Yandex ecosystem), thus
expanding its coverage and paving the way to a truly global nowcasting service.
