Standardized Precipitation Index Page

SPI Information: What is the SPI?

Latest SPI maps: Updated Jul 07, 2016 for data through May
Note: SPI zone definitions for each map are based roughly on climatological differences. Most zones are represented by a relatively small number of gages so oversimplifications of actual conditions will occur.
Kaua'i: 3-month | 6-month | 12-month
O'ahu: 3-month | 6-month | 12-month
Maui: 3-month | 6-month | 12-month
Big Island: 3-month | 6-month | 12-month

SPI Data tables
"Quick-look" data set: Updated Jul 07, 2016 for data through the end of Jun 2016
Full data set: Updated Jul 07, 2016 for May 2016
Micronesia and Samoa data set: Updated Jul 06, 2016 for data through the end of Jun 2016

SPI Rain Gage Locator Maps
Kaua'i | O'ahu | Maui | Big Island