Standardized Precipitation Index Table

South Central Climate Division

Arkansas, Climate Division 08

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.) 2.62 11.61 12.24 13.56 19.6 25.4 33.98 44.84 49.52 55.76 61.01 71.68 89.29 100.56 138.3 156.09 188.26 246.59 310.28 361.08
Accumulated Precipitation Departure from Normal (in.) -1.83 3.52 0.78 -1.13 0.89 2.8 6.43 12.13 11.67 13.62 14.26 19.8 25.96 26.11 34.62 29.88 32.79 39.35 51.18 50.21
Accumulated Precipitation Percent of Average 59 143 107 92 105 112 123 137 131 132 130 138 141 135 133 124 121 119 120 116
Accumulated Precipitation Percentile (non-exceedance) 25.1 83.1 61.8 44.8 60.3 70.5 83.8 94.2 92.3 93.8 94.1 97.3 98.4 97.9 98.8 96.6 97 97.9 99.4 98.9
Standardized Precipitation Index -0.67 0.96 0.3 -0.13 0.26 0.54 0.99 1.57 1.42 1.54 1.56 1.92 2.15 2.03 2.26 1.83 1.88 2.04 2.49 2.3