Minnesotans For Sustainability

 

Sustainable:  A society that balances the environment, other life forms, and human interactions over an indefinite time period.

 

 

 

Earlier in the Year Snowmelt Runoff and Increasing Dewpoints for Rivers
            in Minnesota, Wisconsin and North Dakota

                        Patrick J. Neuman

 

 

Average monthly dewpoint (F), Duluth, Minnesota

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yr

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Ann

 

 

 

 

 

 

1 of 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 of 4

1948

-0.6

2.2

15.7

31.3

36.8

48.9

55.8

56.3

49.1

35.3

25.1

8.5

30.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1949

6

2.1

14

29.8

39.3

52.5

57.7

58.3

43.9

36.9

25.2

7.3

31.3

 

 

 

 

 

 

 

 

Mov avgs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1950

-5.9

4.7

10.2

21.8

35.4

47.5

53.7

49.1

46.7

38.1

17.1

2.9

26.9

 

Mean Dewpoint (F)

 

 

 

   Annual

 

 

 

Mean Dewpoint (F)

 

 

 

 

 

 

 

 

 

1951

-0.7

7.4

12.2

28.1

41.1

49

55.1

53.4

45.4

36.3

14.6

4.9

29

 

 

 

 

 

 

 

 

 

5 yr

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1952

1.2

13.6

15.6

29.7

37.5

50.4

57.6

54.6

48

26.5

22.9

16.8

31.2

 

 

 

 

 

 

 

 

1952

29.8

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1953

6.5

6.7

19.2

25

37.6

51.7

55.9

58.3

45.7

40.4

26.3

10.6

32.1

 

1st 10yr avg for 1948-1957

 

 

1953

30.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1954

-1.7

17.6

11.9

25.3

34.5

51.4

56.2

54.6

47.6

35.2

26.1

14.3

31.1

 

is plotted at 1957 on x axis

 

 

1954

30.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1955

3.3

4.4

9.1

33.2

39.4

52.3

60.6

58.9

45.9

35.9

16.2

1.7

30.2

 

10 yr moving averages

10yr

 

1955

30.7

 

 

 

 

10 year moving averages

 

 

10 year moving averages

1956

7.7

3.9

12

22.5

34.2

51

52.6

54

42.5

38.9

23.1

10.7

29.5

 

Jan

Feb

Mar

Apr

 

 

 

1956

30.8

 

May

 

Jun

 

Jul

 

Aug

 

Sep

 

Oct

 

Nov

 

Dec

1957

-7.6

4.9

14.5

27.7

34.5

48.8

57.6

54.6

45.1

36.2

22.7

11.1

29.3

1957

0.8

6.8

13.4

27.4

1957

30.1

 

1957

30.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1958

10.5

1.4

19.3

24.7

32.2

44.1

53.7

53.6

48.4

37.6

22.4

-0.5

29.1

1958

1.9

6.7

13.8

26.8

1958

30

 

1958

29.8

 

 

 

 

 

 

 

 

 

 

1958

36.2

1958

21.7

1958

7.98

1959

-5.3

2.5

16.5

24.5

40.5

49.5

56.3

58.5

48.1

33.9

11.5

19.5

29.8

1959

0.8

6.7

14.1

26.3

1959

29.8

 

1959

29.6

1959

36.7

1959

49.6

1959

55.9

1959

55

1959

46.3

1959

35.9

1959

20.3

1959

9.2

1960

4.9

5.9

8.3

27.4

37.2

46.6

54.6

57.2

48.5

34.9

23.5

4.3

29.5

1960

1.9

6.8

13.9

26.8

1960

30.1

 

1960

29.4

1960

36.9

1960

49.5

1960

56

1960

55.8

1960

46.5

1960

35.6

1960

20.9

1960

9.34

1961

-1.6

13.9

21.9

24.5

33.9

47.1

54.6

53.5

44.3

34.1

20.7

8.3

29.7

1961

1.8

7.5

14.8

26.5

1961

30.2

 

1961

29.5

1961

36.2

1961

49.3

1961

56

1961

55.8

1961

46.4

1961

35.4

1961

21.5

1961

9.68

1962

-4.4

1.6

16.9

21.9

39.2

45.7

50.4

52

41.6

35.2

24.9

7

27.8

1962

1.2

6.3

15

25.7

1962

29.8

 

1962

29.2

1962

36.3

1962

48.8

1962

55.3

1962

55.5

1962

45.8

1962

36.2

1962

21.7

1962

8.7

1963

-7.5

-1.9

17.5

26.2

35.9

52

57.9

54.5

49.9

43.5

26.8

2.6

29.9

1963

-0.2

5.4

14.8

25.8

1963

29.6

 

1963

29.3

1963

36.2

1963

48.9

1963

55.5

1963

55.1

1963

46.2

1963

36.5

1963

21.8

1963

7.9

1964

10.7

8.8

9.4

25.5

38

45.7

53.5

50.4

44.5

31.4

22.9

2.6

28.7

1964

1.1

4.5

14.5

25.8

1964

29.4

 

1964

29.1

1964

36.5

1964

48.3

1964

55.2

1964

54.7

1964

45.9

1964

36.2

1964

21.5

1964

6.73

1965

-3.6

-4

7.6

26.3

39.3

45.9

52.3

53.6

42

34.5

21.6

17.4

27.9

1965

0.4

3.7

14.4

25.1

1965

29.1

 

1965

28.8

1965

36.5

1965

47.6

1965

54.4

1965

54.2

1965

45.5

1965

36

1965

22

1965

8.3

1966

-10.4

1

19

24.8

31.3

50.4

58.4

54.5

45.6

31.6

18.2

7.7

27.8

1966

-1.4

3.4

15.1

25.4

1966

29

 

1966

28.4

1966

36.2

1966

47.6

1966

54.9

1966

54.2

1966

45.8

1966

35.3

1966

21.5

1966

8

1967

4.7

-5.5

14.3

25.1

29.7

47.8

51.9

50.6

44.8

30.6

17.4

8.9

26.9

1967

-0.2

2.4

15.1

25.1

1967

28.7

 

1967

28.2

1967

35.7

1967

47.5

1967

54.4

1967

53.8

1967

45.8

1967

34.7

1967

21

1967

7.78

1968

1.7

-3.1

17.9

26.2

35

47.2

53.3

52.3

47.8

37.9

22.6

6.7

28.9

1968

-1.1

1.9

14.9

25.2

1968

28.7

 

1968

28

1968

36

1968

47.8

1968

54.3

1968

53.7

1968

45.7

1968

34.8

1968

21

1968

8.5

1969

2.3

8.7

10.8

28.6

35.5

41.8

51.7

53.7

46.4

31.6

20.7

13.1

28.9

1969

-0.3

2.5

14.4

25.7

1969

28.6

 

1969

28.1

1969

35.5

1969

47

1969

53.9

1969

53.2

1969

45.5

1969

34.5

1969

21.9

1969

7.86

1970

-4.8

0.9

10.2

26.5

35.6

50

56.1

53.2

47

36.9

22.3

8

28.6

1970

-1.3

2

14.6

25.6

1970

28.5

 

1970

28.2

1970

35.3

1970

47.4

1970

54

1970

52.8

1970

45.4

1970

34.7

1970

21.8

1970

8.23

1971

-6.6

6.2

14.5

24.8

32.8

50.8

50.6

53.5

49

42.1

23.1

10.2

29.4

1971

-1.8

1.3

13.8

25.6

1971

28.5

 

1971

28.5

1971

35.2

1971

47.7

1971

53.6

1971

52.8

1971

45.9

1971

35.5

1971

22.1

1971

8.42

1972

-6.5

-1.4

10.2

23

40

46

53.1

54.7

44.2

31.4

23.2

2.7

26.8

1972

-2

1

13.1

25.7

1972

28.4

 

1972

28.5

1972

35.3

1972

47.8

1972

53.9

1972

53.1

1972

46.1

1972

35.2

1972

21.9

1972

7.99

1973

7.5

8.4

25.7

26.1

36.5

49.9

54.8

58.2

46.7

40.6

22.6

7.8

32.2

1973

-0.5

2

14

25.7

1973

28.6

 

1973

29.2

1973

35.4

1973

47.6

1973

53.6

1973

53.5

1973

45.8

1973

34.9

1973

21.5

1973

8.51

1974

1.3

4.5

13.5

27.1

34.5

47.3

57.2

54.3

39.7

32.5

23.9

16.5

29.5

1974

-1.4

1.6

14.4

25.9

1974

28.7

 

1974

29.3

1974

35

1974

47.7

1974

53.9

1974

53.9

1974

45.3

1974

35

1974

21.6

1974

9.9

1975

6.2

6.9

11.4

23.5

40

51.3

58.2

53.4

43

34.8

22.6

5.9

29.9

1975

-0.5

2.7

14.8

25.6

1975

28.9

 

1975

29.6

1975

35.1

1975

48.3

1975

54.5

1975

53.8

1975

45.4

1975

35

1975

21.7

1975

8.75

1976

-1.6

11

14.4

27.3

32.1

49.5

53.5

52.4

40.1

25

11

-4.2

25.9

1976

0.4

3.7

14.3

25.8

1976

28.7

 

1976

28.9

1976

35.2

1976

48.2

1976

54

1976

53.6

1976

44.9

1976

34.3

1976

20.9

1976

7.56

1977

-8.7

7.9

22.6

28.2

42.7

49.4

55.7

48.8

46.6

32.4

20.5

5.1

29.4

1977

-0.9

5

15.1

26.1

1977

29

 

1977

29.4

1977

36.5

1977

48.3

1977

54.4

1977

53.5

1977

45.1

1977

34.5

1977

21.3

1977

7.18

1978

-3.5

0.6

12.8

23.4

40.1

46.8

54.8

53.5

48.2

33

16.6

2.3

27.5

1978

-1.4

5.4

14.6

25.9

1978

28.8

 

1978

28.4

1978

37

1978

48.3

1978

54.6

1978

53.6

1978

45.1

1978

34

1978

20.7

1978

6.74

1979

-9.1

-4.3

15.7

24

33.5

46.1

54.4

52.5

46.9

33

20.1

14.4

27.4

1979

-2.6

4.1

15.1

25.4

1979

28.7

 

1979

28

1979

36.8

1979

48.7

1979

54.8

1979

53.5

1979

45.1

1979

34.2

1979

20.6

1979

6.87

1980

1.1

3.8

11.9

26.8

35.3

48.2

55.5

55.8

45.7

29.8

22.3

3.6

28.4

1980

-2

4.4

15.3

25.4

1980

28.6

 

1980

27.7

1980

36.8

1980

48.5

1980

54.8

1980

53.7

1980

45

1980

33.5

1980

20.6

1980

6.43

1981

2.1

10.4

18.9

28.7

34.2

50.2

56.7

57.8

45.2

33.7

25.5

8.8

31.1

1981

-1.1

4.8

15.7

25.8

1981

28.8

 

1981

28.8

1981

36.9

1981

48.5

1981

55.4

1981

54.1

1981

44.6

1981

32.6

1981

20.8

1981

6.29

1982

-12.5

2.5

11.9

21.3

40

42.2

54.6

50.7

46.5

35.7

18.1

14.7

27.3

1982

-1.7

5.2

15.9

25.6

1982

28.9

 

1982

28.3

1982

36.9

1982

48.1

1982

55.5

1982

53.7

1982

44.9

1982

33.1

1982

20.3

1982

7.49

1983

8.9

16.1

20

24.7

32.5

51.3

58.6

59.6

49.4

37.9

27.1

-2.9

32

1983

-1.6

5.9

15.3

25.5

1983

28.8

 

1983

29.2

1983

36.5

1983

48.2

1983

55.9

1983

53.9

1983

45.1

1983

32.8

1983

20.8

1983

6.42

1984

4.2

15.6

10.5

28.2

36.2

49.9

53.5

57.1

41.2

37.8

20.3

6.1

30.1

1984

-1.3

7.1

15

25.6

1984

28.9

 

1984

29.8

1984

36.7

1984

48.5

1984

55.6

1984

54.2

1984

45.3

1984

33.3

1984

20.4

1984

5.38

1985

-1.2

3.8

20.4

29.8

41

45.1

54.5

52.5

45.5

32.7

14.7

-1.2

28.3

1985

-2

6.7

15.9

26.2

1985

28.7

 

1985

29.8

1985

36.8

1985

47.9

1985

55.2

1985

54.1

1985

45.5

1985

33.1

1985

19.6

1985

4.67

1986

8.2

6

18.3

27.9

40.8

48.5

58.2

52.8

46.5

35.9

17

14.5

31.4

1986

-1.1

6.2

16.3

26.3

1986

29.3

 

1986

29.8

1986

37.6

1986

47.8

1986

55.7

1986

54.1

1986

46.2

1986

34.2

1986

20.2

1986

6.54

1987

9.7

17.8

19.2

27.2

39.6

50.4

59.4

55

48.3

28.2

25.1

17.4

33.2

1987

0.8

7.2

16

26.2

1987

29.7

 

1987

31

1987

37.3

1987

47.9

1987

56

1987

54.7

1987

46.3

1987

33.8

1987

20.7

1987

7.77

1988

0.1

-2

15.9

21.2

39.2

50.5

57.2

57.3

47.9

29.4

24.5

8.4

29.2

1988

1.2

7

16.3

26

1988

29.8

 

1988

30.4

1988

37.2

1988

48.2

1988

56.3

1988

55.1

1988

46.3

1988

33.4

1988

21.5

1988

8.38

1989

10.4

-5.4

11.5

23.2

36.5

47.7

57.2

56.3

45.4

32.5

16.9

-1.9

27.7

1989

3.1

6.9

15.9

25.9

1989

29.9

 

1989

30

1989

37.5

1989

48.4

1989

56.5

1989

55.5

1989

46.2

1989

33.4

1989

21.2

1989

6.75

1990

14

6.7

17.5

27.2

34.5

52.2

55.2

55.2

49

31.3

22.4

6.3

31.1

1990

4.4

7.2

16.4

25.9

1990

30.1

 

1990

30.5

1990

37.5

1990

48.8

1990

56.5

1990

55.4

1990

46.5

1990

33.5

1990

21.2

1990

7.02

1991

-0.6

10.8

18.1

28.5

44.6

52.3

55.2

55.7

45.3

31.2

16

11.1

30.8

1991

4.1

7.2

16.3

25.9

1991

30.1

 

1991

30.4

1991

38.5

1991

49

1991

56.4

1991

55.2

1991

46.5

1991

33.3

1991

20.2

1991

7.25

1992

11.2

16

16.1

26.4

37.5

45.3

50.8

51.4

44.2

31

22.3

10.8

30.3

1992

6.5

8.5

16.8

26.4

1992

30.4

 

1992

29.8

1992

38.2

1992

49.3

1992

56

1992

55.3

1992

46.3

1992

32.8

1992

20.6

1992

6.86

1993

5.5

6.2

17.8

23.5

38.2

47.5

55.3

56.8

42.2

29.2

19.2

12.4

29.6

1993

6.2

7.6

16.5

26.3

1993

30.2

 

1993

29.9

1993

38.8

1993

48.9

1993

55.7

1993

55

1993

45.6

1993

31.9

1993

19.8

1993

8.39

1994

-8.3

-0.4

18.9

24.1

37.5

52.3

55.3

53.5

51.2

38.3

24.7

16.1

30.4

1994

4.9

6

17.4

25.9

1994

30.2

 

1994

30.4

1994

38.9

1994

49.2

1994

55.8

1994

54.7

1994

46.6

1994

32

1994

20.3

1994

9.39

1995

7.6

3.5

20.9

23.3

35.2

52.4

56.3

58.7

46.8

36.4

13.5

6.3

30.3

1995

5.8

5.9

17.4

25.3

1995

30.4

 

1995

30.3

1995

38.4

1995

49.9

1995

56

1995

55.3

1995

46.7

1995

32.3

1995

20.2

1995

10.1

1996

-4.8

4.4

8

22.3

33.2

51.7

54.4

56.6

49.3

34.2

15.8

7.9

27.8

1996

4.5

5.8

16.4

24.7

1996

30

 

1996

29.7

1996

37.6

1996

50.2

1996

55.6

1996

55.7

1996

47

1996

32.2

1996

20

1996

9.48

1997

1.9

10.4

15.7

23

30.7

50.7

55.3

53.2

49

34.7

19.6

18.8

30.3

1997

3.7

5

16

24.3

1997

29.8

 

1997

29.7

1997

36.7

1997

50.3

1997

55.2

1997

55.5

1997

47

1997

32.8

1997

19.5

1997

9.62

1998

13.1

23.8

17.5

26

40.4

50.3

55.3

56.4

49.4

39.2

26

13.9

34.8

1998

5

7.6

16.2

24.8

1998

30.3

 

1998

30.7

1998

36.8

1998

50.2

1998

55

1998

55.4

1998

47.2

1998

33.8

1998

19.6

1998

10.2

1999

4.9

14.4

19.1

27.6

40

51

58.8

55.5

46.8

31.1

26.3

13.8

33

1999

4.5

9.6

17

25.2

1999

30.8

 

1999

31.2

1999

37.2

1999

50.6

1999

55.2

1999

55.3

1999

47.3

1999

33.7

1999

20.6

1999

11.7

2000

5.2

15.7

23.6

25.6

41.7

47.8

55.8

58

45.3

37.4

24.7

-0.5

31.7

2000

3.6

10

17.6

25

2000

30.9

 

2000

31.5

2000

37.9

2000

50.1

2000

55.3

2000

55.6

2000

47

2000

34.3

2000

20.8

2000

11.1

2001

13.2

2.8

17.5

31.9

42.8

51.9

56.8

58.7

49

34.5

33.2

17.5

34.3

2001

5

9.7

17.5

25.4

2001

31.3

 

2001

32.8

2001

37.7

2001

50.1

2001

55.4

2001

55.9

2001

47.3

2001

34.6

2001

22.5

2001

11.7

2002

14.2

15.1

9.1

29.1

33.9

51.7

59.2

55.9

50.6

29.3

19

14.8

31.9

2002

5.3

9.6

16.8

25.6

2002

31.4

 

2002

33.1

2002

37.4

2002

50.7

2002

56.3

2002

56.3

2002

48

2002

34.4

2002

22.2

2002

12.1

2003

0.9

0.9

14

24.4

34.7

49.4

56.3

59.3

 

 

 

 

 

2003

4.8

9.1

16.4

25.7

2003

 

 

2003

 

2003

37

2003

50.9

2003

56.4

2003

56.6

2003

 

2003

 

2003

 

2003

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yr

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Ann

 

Jan

Feb

Mar

Apr

 

10 yr

 

 

5 yr

 

10 year moving averages

 

 

 

 

 

10 year moving averages

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10 year moving averages

Ann

 

 

Ann

 

May

 

Jun

 

Jul

 

Aug

 

Sep

 

Oct

 

Nov

 

Dec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 of 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 of 4

 

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