Standardized Precipitation Index Table

Central Climate Division

Arkansas, Climate Division 05

Precipitation Data Table

Time Scale in Months (As of the end of Nov. 2019)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 4.84 11.11 12.76 17.78 21.89 27.23 38.51 47.68 51.73 59.89 64.12 72.64 91.37 104.38 141.48 158.95 189 244.93 310.24 361.73
Accumulated Precipitation Departure from Normal (in.) 0.34 2.86 0.85 2.44 2.72 4.03 9.84 13.77 12.85 17.16 17.23 21.14 27.97 29.71 38.58 32.95 34.76 39.38 53.32 53.55
Accumulated Precipitation Percent of Average 108 135 107 116 114 117 134 141 133 140 137 141 144 140 137 126 123 119 121 117
Accumulated Precipitation Percentile (non-exceedance) 62.7 80.9 62.3 72.7 73.3 78.4 93.3 96.4 94.7 97.6 97.2 98.3 99.3 99.3 99.6 98.4 98.4 98.8 99.8 99.7
Standardized Precipitation Index 0.32 0.88 0.31 0.6 0.62 0.79 1.5 1.8 1.62 1.97 1.91 2.13 2.46 2.47 2.69 2.15 2.15 2.24 2.85 2.74