Standardized Precipitation Index Table

Gulf Climate Division

Alabama, Climate Division 08

Precipitation Data Table

Time Scale in Months (As of the end of Feb. 2024)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 1.98 8.2 13.31 17.13 18.79 21.2 24.12 30.59 38.56 42.25 48.66 52.56 64.83 74.22 118.33 140.37 191.36 249.54 310.51 380.67
Accumulated Precipitation Departure from Normal (in.) -2.97 -1.5 -1.48 -1.39 -3.13 -6.33 -9.82 -10.71 -8.55 -9.38 -7.84 -9.83 -12.35 -15.75 -6.53 -12.17 4 -0.29 -1.81 5.77
Accumulated Precipitation Percent of Average 40 85 90 92 86 77 71 74 82 82 86 84 84 82 95 92 102 100 99 102
Accumulated Precipitation Percentile (non-exceedance) 6.8 36.8 39.3 42.8 31.1 14.7 5.2 4.3 11.7 11.5 19.7 16.3 12.4 8.6 33.6 22.3 60.1 50.5 47.7 60.3
Standardized Precipitation Index -1.49 -0.34 -0.27 -0.18 -0.49 -1.05 -1.62 -1.72 -1.19 -1.2 -0.85 -0.98 -1.15 -1.36 -0.42 -0.76 0.25 0.01 -0.06 0.26