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Bulgaria - National rainfall index

543.3 (mm) in 1999

In 1999, rainfall index for Bulgaria was 543.3 mm. Though Bulgaria rainfall index fluctuated substantially in recent years, it tended to decrease through 1970 - 1999 period ending at 543.3 mm in 1999.

The description is composed by our digital data assistant.

What is rainfall index?

An indicator, developed by FAO, which represents the quality of the crop growing season. The NRI yearly results take into consideration the precipitation that year, the average precipitation over the period 1986-2000, the seasonality of the main crop-growing season (distinguishing between northern and southern hemispheres), and what areas of the country are wetter. The median of each five year period is provided. Note: due to methodological differences, this variable is not comparable to average precipitation

What is Bulgaria rainfall index?

Date Value Change, %
1999 543.3 0.43 %
1996 541.0 1.73 %
1989 531.8 -1.39 %
1983 539.3 -19.99 %
1980 674.0 5.97 %
1973 636.0 -6.07 %
1970 677.1 -1.30 %
1964 686.0