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- Rain Spi3 World
Rain SPI3 of the world per half minute
Click on the Name to view the long term averages per half miniute GRID cellSPI formula is defined as the Observed rainfall in mm. over 3 months minus the Average over 3 months divided by the Standard Deviation of 3 months
| YEAR | NAME | TOTAL CELLS | JANUARY | FEBRUARY | MARCH | APRIL | MAY | JUNE | JULY | AUGUST | SEPTEMBER | OCTOBER | NOVEMBER | DECEMBER |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1975 | Chad | 492 | -.4 | -.1 | .3 | .4 | 1.2 | -.5 | 0 | .6 | 1 | .8 | .6 | -.3 |
| 1976 | Chad | 492 | .2 | 3.1 | 1.3 | .3 | 1.2 | 0 | -.1 | -.3 | -.3 | -.1 | .6 | 1.3 |
| 1977 | Chad | 492 | .7 | -.3 | -.6 | -.6 | 1.2 | -.3 | -.1 | .5 | .4 | .4 | -.6 | -.6 |
| 1978 | Chad | 492 | -.5 | -.3 | -.2 | .7 | 2 | .6 | 1.1 | .4 | .3 | -.2 | -.1 | 0 |
| 1979 | Chad | 492 | -.4 | -.2 | -.1 | 1.1 | 2.4 | 1 | .7 | .2 | 0 | 0 | .3 | .7 |
| 1980 | Chad | 492 | .4 | -.2 | -.1 | 0 | 1.9 | 1 | 1 | .7 | .2 | 0 | -.4 | -.1 |
| 1981 | Chad | 492 | .3 | -.3 | .4 | .4 | 1.7 | 0 | .3 | .4 | .4 | .2 | -.2 | -.3 |
| 1982 | Chad | 492 | -.1 | -.2 | .6 | .2 | 1.4 | .2 | -.3 | -.3 | -.5 | -.3 | -.5 | -.2 |
| 1983 | Chad | 492 | -.5 | -.2 | -.6 | -1 | .5 | -.5 | -.4 | -.3 | -.5 | -.6 | -.8 | -1 |
| 1984 | Chad | 492 | -.3 | -.2 | .4 | .7 | 1.7 | -.1 | -.9 | -1.5 | -1.4 | -1.2 | -.6 | -.3 |
| 1985 | Chad | 492 | -.1 | -.3 | 1.3 | -.1 | 1.1 | -.4 | .1 | -.1 | -.2 | -.6 | -.8 | -.7 |
| 1986 | Chad | 492 | 0 | .1 | .1 | -.7 | .3 | -1.2 | -.3 | -.4 | -.2 | -.6 | -.2 | -.5 |
| 1987 | Chad | 492 | -.4 | -.3 | -.4 | -.8 | 1.1 | 0 | -.7 | -.6 | -.7 | -.4 | -.6 | -.5 |
| 1988 | Chad | 492 | -.5 | -.3 | -.2 | -.4 | .8 | -.1 | .7 | 1.4 | 1.6 | 1.2 | .8 | -.9 |
| 1989 | Chad | 492 | -.5 | -.3 | -.4 | -.4 | 1.2 | .2 | -.3 | -.1 | -.2 | .1 | -.1 | -.1 |
| 1990 | Chad | 492 | -.4 | -.3 | -.6 | -.5 | .8 | -.6 | -.3 | -.6 | -.7 | -.9 | -.6 | -.2 |
| 1991 | Chad | 492 | .6 | 0 | -.3 | .8 | 3.9 | 1.6 | .9 | .1 | -.1 | 0 | -.7 | -.1 |
| 1992 | Chad | 492 | .6 | 1.6 | .9 | -.1 | 1.1 | -.4 | -.2 | .1 | .2 | .1 | 0 | -.2 |
| 1993 | Chad | 492 | .2 | -.3 | -.5 | .5 | 2.1 | .2 | -.3 | -.7 | -.6 | -.6 | -.5 | -.3 |
| 1994 | Chad | 492 | -.2 | .1 | -.4 | 0 | .8 | -.6 | -.3 | 1.2 | 1.9 | 2.3 | 2.2 | .6 |
| 1995 | Chad | 492 | .2 | -.3 | 1 | .6 | 1.4 | 0 | 0 | .1 | .1 | .2 | .3 | .5 |
| 1996 | Chad | 492 | -.2 | -.3 | .2 | .8 | 1.9 | .7 | -.3 | -.5 | -.5 | -.1 | .2 | 0 |
| 1997 | Chad | 492 | -.4 | -.1 | -.1 | 1.6 | 1.8 | .5 | .1 | 0 | -.2 | -.2 | -.1 | .3 |
| 1998 | Chad | 492 | 1.3 | -.3 | -.6 | -.3 | 1 | -.5 | -.3 | .2 | .8 | 1.2 | 1.7 | 1 |
| 1999 | Chad | 492 | .3 | 1.4 | .2 | -.8 | .8 | -.4 | .4 | .6 | .6 | .8 | 1 | 2.1 |
| 2000 | Chad | 492 | -.2 | .2 | -.3 | -1 | .5 | -.5 | -.3 | -.6 | -.7 | -.8 | -.4 | 0 |
| 2001 | Chad | 492 | -.5 | -.3 | -.2 | -.8 | .7 | -.6 | -.3 | .2 | .5 | .5 | .4 | -.5 |
| 2002 | Chad | 492 | -.3 | -.2 | -.2 | -.8 | .4 | -1.5 | -1.2 | -.7 | -.3 | -.2 | 0 | -.3 |
| 2003 | Chad | 492 | .1 | -.3 | 0 | .7 | 1.6 | 1.1 | .9 | 1 | .3 | .4 | 0 | 1 |
| 2004 | Chad | 492 | -.1 | -.3 | -.6 | -.2 | 1.9 | .6 | .4 | -.2 | -.3 | -.5 | -.3 | -.8 |
| 2005 | Chad | 492 | .6 | -.3 | 0 | .6 | 2 | .7 | -.1 | .1 | .2 | .6 | .6 | 0 |
| 2006 | Chad | 492 | -.2 | 1.3 | .4 | -.8 | 1.8 | .9 | 1.9 | 1.5 | 2.3 | 2 | 3.1 | .4 |
| 2007 | Chad | 492 | .9 | -.3 | -.4 | -.3 | .8 | -.5 | -.9 | -.5 | -.4 | -.1 | -.1 | -.3 |
| 2008 | Chad | 492 | .5 | .3 | 8.4 | 3.4 | 4.2 | 2.8 | 4.1 | 3.5 | 5.1 | 4.9 | 7.1 | 1.6 |
| 2009 | Chad | 492 | -.3 | .6 | .8 | 4.5 | 2.9 | 2.1 | .7 | -.4 | 0 | -.1 | 1.8 | -.6 |
| 2010 | Chad | 492 | -.4 | 8.3 | 3.1 | -.1 | .3 | -.7 | 1.4 | 1.9 | 2.6 | 2.4 | 3.4 | 1.8 |
| 2011 | Chad | 492 | .1 | 1.7 | .3 | .2 | 1.3 | 0 | -.4 | .4 | 1.4 | 2 | 2.9 | .2 |
| 2012 | Chad | 492 | -.3 | .5 | -.4 | -.7 | 1.6 | .9 | 1.4 | 2.4 | 2.9 | 3 | 2.7 | .1 |
| 2013 | Chad | 492 | .4 | 0 | 1 | 0 | 1.4 | .7 | .3 | .5 | .7 | 1.2 | 1.9 | .9 |
| 2014 | Chad | 492 | .7 | 3.4 | .4 | -.1 | 1.8 | -.1 | 0 | -.2 | .9 | 1.2 | 2.6 | .7 |
| 2015 | Chad | 492 | -.3 | 0 | -.3 | .4 | 1 | .1 | -.2 | 0 | 1 | 1.4 | 3.3 | .8 |
| 2016 | Chad | 492 | 0 | 0 | 2.2 | 1.4 | 2.5 | 1.7 | 1.2 | .5 | .7 | .6 | 1.4 | -.2 |
| 2017 | Chad | 492 | -.1 | .3 | -.2 | 0 | 1 | 1.1 | 1.3 | .7 | .9 | .7 | 1.9 | -.3 |
| 43 values. Sum: | 21156 | 0.5 | 16.4 | 15.6 | 8.8 | 63 | 9.2 | 10.7 | 11.2 | 19.2 | 20.7 | 33.2 | 4.7 | |
| Average: | 492 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
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