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Variable
Drought Index
Palmer Index
PDSI
?
Palmer Z-Index
?
Self-Calibrated PDSI
?
SPI
?
1 Month
2 Months
3 Months
4 Months
5 Months
6 Months
7 Months
8 Months
9 Months
10 Months
11 Months
12 Months
15 Months
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24 Months
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36 Months
48 Months
60 Months
72 Months
SPEI
?
1 Month
2 Months
3 Months
4 Months
5 Months
6 Months
7 Months
8 Months
9 Months
10 Months
11 Months
12 Months
15 Months
18 Months
24 Months
30 Months
36 Months
48 Months
60 Months
72 Months
Climate
Temperature
Anomaly
?
Last Full Month
Last 2-Months
Last 3-Months
Last 4-Months
Last 5-Months
Last 6-Months
Last 7-Months
Last 8-Months
Last 9-Months
Last 10-Months
Last 11-Months
Last 12-Months
Percentile
?
Last Full Month
Last 2-Months
Last 3-Months
Last 4-Months
Last 5-Months
Last 6-Months
Last 7-Months
Last 8-Months
Last 9-Months
Last 10-Months
Last 11-Months
Last 12-Months
Precipitation
Anomaly
?
Last Full Month
Last 2-Months
Last 3-Months
Last 4-Months
Last 5-Months
Last 6-Months
Last 7-Months
Last 8-Months
Last 9-Months
Last 10-Months
Last 11-Months
Last 12-Months
Percentile
?
Last Full Month
Last 2-Months
Last 3-Months
Last 4-Months
Last 5-Months
Last 6-Months
Last 7-Months
Last 8-Months
Last 9-Months
Last 10-Months
Last 11-Months
Last 12-Months
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United States
Archived Image:
PRISM > 05/2022 > SPEI 4 Month > Western US
Download PRISM SPEI 4 Month NETCDF Data for United States
Download PRISM SPEI 4 Month GeoTIFF Data for United States