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The heavy precipitation was mainly due to the aftermaths of the tropical cyclone Hudhud, with made landfall on the Indian east-coast on the 12 October (see below for track forecast after the landfall).
The plots below shows 12-hour forecasts of MSLP and precipitation for the days before the blizzard.
Gallery sortincludeLabel comment page an_mslp sort comment title MSLP and precipitation from 12-hour forecasts
The animation below shows the change in the snow cover in the forecast from 11 October 00z.
For some reason the precipitation observations are missing from Nepal for the days of interest.
3. Predictability
3.1 Data assimilation
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