Feast or Famine

We are in a drought in Texas. Texas seems to go through cycles of drier and wetter patterns. Some years are wetter than others, while others are drier than usual. Upper Texas Coast is no stranger to that as I can attest living there. So, I made a chart of annual rainfall differences to see if there is a cycle. It is based on annual rainfall minus average rainfall. The data is from the Divisional Weather Set.

Average Rainfall For Upper Texas Coast (1895-2010)
47.51

Standard Deviation (1895-2010)
10.97

Abnormally Dry
36.54 or below

Abnormally Wet
58.48 or above

Here is graph that shows the dry and wet cycle for Upper Texas Coast.

Dry Cycle
1895-1899
1909-1912
1915-1918
1924-1925
1927-1928
1930-1933
1936-1940
1950-1957
1962-1965
1988-1990
1999-2000
2008-?

Wet Cycle
1902-1903
1907-1908
1913-1914
1919-1920
1922-1923
1934-1935
1941-1942
1944-1946
1959-1961
1972-1974
1985-1987
1991-1995
1997-1998
2001-2002
2006-2007

Dry and wet cycles are about equally common, but dry cycles tend to last longer than wet cycles. Currently, we are in dry cycle, which started in 2008 and is currently going on. Dry or wet spells are not free of wet or dry months. Even in the driest cycle, there are heavy rain and flood events, while in the wettest cycle there are really dry months. It is all about how much rain fall in a whole year or years. It is feast or famine for us Texans. In many ways, it is a constant tug-of-war of rain or drought. We are always one notch away from drought.

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