No.

Period/

Season

Drought Intensity

Drought Years by Location

Pemba

Unguja

Around PKFR

JNIA

Kisarawe

1.

MAM

Extreme Drought

(−2.5) April 1991, 1984, 1992, 2003

(−3.2) April 2003, March and May 2003

(−3.3) April 1991, 1961, 1965, 1982, 2003

(−2.7) March 1982, 2003, 2009

Severe Drought

(−1.9) May 2009, 1962, 1967, 1980, 1991, 1992, 2000, 2009

(−1.9) March 1987, 1980, 2005, 2011

(−1.6) May 1980

Moderate Drought

(−1.4) 1987, 1974, 1976, 1980, 1996, 2003

(−1.4) May 1961, 1965, 1982, 1987, 1988, 1994, 2000, 2011

(−1.4) May 1988, 1955, 1959 1970, 1971, 1973, 1980, 1982, 1985, 1992, 2000, 2003, 2009

(−1.4) March 1987, 1982, 1991, 2003, 2004, 2005, 2007, 2010

2.

OND

Extreme Drought

(−2.1) Dec 1975

(−2.4) Oct 2001 and Nov 2001

(−2.3) Oct 2001, 1955, 1974

(−3.0) Nov 2001

Severe Drought

(−1.9) Dec 1995, 1976, 1987, 1996

(−1.8) Dec 2001, 1995, 2000, 2008

(−1.7) Oct 1992, 1956, 1960, 1973, 2003

(−1.9) Dec 2003, 1987, 2001, 2010

Moderate Drought

(−1.4) Nov 1974, 1983, 1985, 1986, 1990, 1995, 1998, 2001

(−1.4) Dec 2003, 1963, 1969, 1973, 1974, 1983, 1992, 1995, 1996, 1999, 2000, 2005, 2008, 2009, 2010

(−1.4) Nov 1958, 1956, 1960, 1963, 1966, 1971, 1974, 1976, 1985, 1987, 2000, 2001, 2009

(−1.4) Oct 2010, 2003, 2005, 2009