In 8 of 12 states, the agency reported that snow levels and precipitation were 75 percent or less below normal this winter.
Behind the bushes the snow level was slightly lower than the surrounding surface.
Other forecasters suggested the snow levels could be even higher.
Downwind monitors will record snow levels in specified target areas.
Particularly vulnerable are the woody plants, which have buds exposed above snow levels.
Thanks to its terrain, Cantal can count on a good snow level, which allows winter sports.
The snow level was expected to fall to around 5,000 feet, and as low as 4,000 feet in some places, the weather service said.
It is a cave, high up above snow level.
Through the upside windows they saw snow level with the sills.
In 1927-28, the winter tillage area was badly affected due to low snow levels.