March Rainfall Summary

 


Parish Standard Precipitation Index (SPI) Assessment

Parish Mean Rainfall and Comparison with 30-yr Averages

  MAR MAR MAR % OF 30 YR NORMAL
Parishes KEY 2020 2019 30 YR NORMAL (1971-2000) 2020 2020 2020
JAN FEB MAR
Westmoreland WES 42 133 88 57 83 47
St. Elizabeth STE 71 94 99 32 60 72
Manchester MAN 42 123 91 109 86 46
Clarendon CLA 49 81 56 44 124 88
St. Catherine STC 72 127 61 21 50 119
Kingston & St. Andrew (KSA) KSA 34 44 67 17 13 50
St. Thomas STT 39 81 68 45 88 58
Portland POR 387 160 209 57 118 185
St. Mary STM 99 67 108 95 129 91
St. Ann STA 109 117 71 124 145 153
Trelawny TRE 62 155 61 104 73 103
St. James STJ 44 115 60 97 135 73
Hanover HAN 29 144 104 50 38 28
   
Jamaica JAM 83 111 88 68 93 94

Table 1: Parish Mean Rainfall

Observed SPI for December 2019 to March 2020
Parishes Dec/Jan Jan/Feb Feb/Mar
Westmoreland 1.00 -0.07 -0.54
St. Elizabeth 0.76 -0.76 -0.33
Manchester 0.68 0.26 -0.51
Clarendon 0.44 0.08 0.45
St. Catherine -0.88 -1.69 -0.19
Kingston & St. Andrew -0.91 -1.17 -0.72
St. Thomas -0.32 -0.42 -0.06
Portland -1.00 -0.29 1.00
St. Mary -0.39 0.71 0.80
St. Ann -0.02 0.66 0.88
Trelawny 0.38 0.39 0.12
St. James -0.19 0.00 -0.02
Hanover 0.31 -0.79 -1.16

Table 2: Parish SPI for December 2019 to March 2020

 

SPI Data Used In Jamaica Drought Monitor

SPI Value Category SPI Value Category
0.00 to -0.50 Near-normal (dry) 0.00 to 0.50 Near-normal (wet)
-0.51 to -0.79 Abnormally Dry 0.51 to 0.79 Abnormally Wet
-0.80 to -1.29 Moderately Dry 0.80 to 1.29 Moderately Wet
-1.30 to -1.59 Severely Dry 1.30 to 1.59 Severely Wet
-1.60 to -1.99 Extremely Dry 1.60 to 1.99 Extremely Wet
-2.00 or less Exceptionally Dry 2.00 or more Exceptionally Wet

Table 3: SPI Category Chart.