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Casper 2003 Annual Summary

Lander 2003 Annual Summary

Riverton 2003 Annual Summary

2003 ANNUAL SUMMARY FOR CASPER, WYOMING

For the year 2003, Casper Wyoming was slightly warmer than normal, slightly wetter than normal, with below normal snowfall. This is based on comparing averages of the daily values with the 30 year normals from 1971-2000.

TEMPERATURE

Even though the year 2003 was warmer than normal, four months during the year were colder than normal. The yearly average for 2003 was 46.3 degrees, which was 0.8 degrees above the 30 year normal of 45.5 degrees. Compared with the POR (Period of Record - 1940-2003), 2003 was 0.8 degrees above the average of 45.5 degrees.

Month

Feb

Jun

Sep

Nov

Average

22.2

59.5

55.3

29.5

30yr Normal

27.2

63.2

58.3

32.6

Dep/Normal

-5.0

-3.7

-3.0

-3.1

February had the greatest departure from normal with 5 degrees below normal.

Year

 

2000

2001

2002

2003

Temperature

45.7

47.0

44.4

46.3

30yr Norm

45.5

45.5

45.5

45.5

Dep/Norm

+0.2

+1.5

-1.1

+0.8

 

PRECIPITATION

The year 2003 received 13.11 inches of precipitation, which was 0.10 inches above the 30 year normal of 13.01 inches. Compared with the POR average, the year was 1.19 inches above the long term average. June had the greatest monthly departure from normal with 4.71 inches, which was 3.28 inches above the 30 year normal of 1.43. Compared with the POR average, June was 3.28 inches above normal.

2003 in Casper was noticeably wetter than any of the past 4 years.

Year

 

2000

2001

2002

2003

Precipitation

10.70

6.76

7.05

13.11

30yr Norm

13.01

13.01

13.01

13.01

Dep/Norm

-2.31

-6.25

-5.96

+0.10

 

SNOWFALL

For the year, 47.6 inches of snow fell in Casper. This was 16.7 inches below the 30 year normal of 64.3 inches. Compared to the POR average of 58.1 inches, this was 10.5 inches below normal. October was the snowiest month in 2003 with 21.0 inches of snowfall.

Year

 

2000

2001

2002

2003

Snowfall

62.0

30.8

43.5

47.6

30yr Norm

64.3

64.3

64.3

64.3

Dep/Norm

-2.3

-33.5

-20.8

-16.7

 

TEMPERATURES - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

31.2

22.2

35.4

45.5

53.3

59.5

73.3

72.2

55.3

49.0

29.5

29.0

46.3

                           

30yr Norm

22.9

27.2

35.3

43.0

52.5

63.2

70.6

69.3

58.3

46.3

32.6

24.5

45.5

Dep/Norm

8.3

-5.0

0.1

2.5

0.8

-3.7

2.7

2.9

-3.0

2.7

-3.1

4.5

0.8

                           

POR Norm

23.3

26.9

33.2

42.9

52.6

62.6

70.9

69.4

58.4

46.8

33.1

25.6

45.5

Dep/Norm

7.9

-4.7

2.2

2.6

0.7

-3.1

2.4

2.8

-3.1

2.2

-3.6

3.4

0.8

                           

PRECIPITATION - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

0.10

0.50

0.97

1.54

0.51

4.71

0.41

1.69

1.38

0.61

0.30

0.39

13.11

                           

30yr Norm

0.58

0.64

0.90

1.52

2.38

1.43

1.29

0.73

0.98

1.14

0.82

0.62

13.01

Dep/Norm

-0.48

-0.14

0.07

0.02

-1.87

3.28

-0.88

0.96

0.40

-0.53

-0.52

-0.23

0.10

                           

POR Norm

0.51

0.56

0.88

1.47

2.08

1.43

1.10

0.66

0.95

0.99

0.73

0.54

11.92

Dep/Norm

-0.41

-0.06

0.09

0.07

-1.57

3.28

-0.69

1.03

0.43

-0.38

-0.43

-0.15

1.19

                           

SNOWFALL - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

0.4

9.2

19.4

7.0

0.4

0.0

0.0

0.0

2.5

21.0

5.2

11.2

47.6

                           

30yr Norm

11.1

10.8

12.5

13.9

4.4

0.1

0.0

0.0

1.4

7.4

11.4

11.6

64.3

Dep/Norm

-10.7

-1.6

6.9

-6.9

-4.0

-0.1

0.0

0.0

1.1

13.6

-6.2

-0.4

-16.7

                           

POR Norm

9.7

9.8

12.5

11.9

4.1

0.3

0.0

0.0

1.3

6.1

10.3

9.8

58.1

Dep/Norm

-9.3

-0.6

6.9

-4.9

-3.7

-0.3

0.0

0.0

1.2

14.9

-5.1

1.4

-10.5

 

 

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2003 ANNUAL SUMMARY FOR LANDER, WYOMING

For the year 2003, Lander Wyoming was warmer than normal, drier than normal, with below normal snowfall. This is based on comparing averages of the daily values with the 30 year normals from 1971-2000.

TEMPERATURE

Even though the year 2003 was warmer than normal, four months during the year were colder than normal. The yearly average for 2003 was 46.0 degrees, which was 1.2 degrees above the 30 year normal of 44.8 degrees. Compared with the POR (Period of Record - 1892-2003), 2003 was 2.1 degrees above the average of 43.9 degrees.

Month

Feb

Jun

Sep

Nov

Average

18.0

60.6

56.8

24.4

30yr Normal

25.6

63.5

58.6

30.3

Dep/Normal

-7.6

-2.9

-1.8

-5.9

February had the greatest departure from normal with nearly 8 degrees below normal.

Year

 

2000

2001

2002

2003

Temperature

45.7

46.3

44.1

46.0

30yr Norm

44.8

44.8

44.8

44.8

Dep/Norm

+0.9

+1.5

-0.7

+1.2

 

PRECIPITATION

The year 2003 received 10.26 inches of precipitation, which was 3.17 inches below the 30 year normal of 13.43 inches. Compared with the POR average, the year was 3.16 inches below the long term average. April had the greatest monthly departure from normal with 0.88 inches, which was 1.19 inches below the 30 year normal of 2.07. Compared with the POR average, April was 1.31 inches below normal.

The following chart shows 2003 continued the trend of below normal precipitation, although 2003 was the wettest of the past 4 years. The year 2001 was the driest on record for Lander.

Year

 

2000

2001

2002

2003

Precipitation

8.61

5.30

8.09

10.26

30yr Norm

13.43

13.43

13.43

13.43

Dep/Norm

-4.82

-8.13

-5.34

-3.17

 

SNOWFALL

For the year, 94.7 inches of snow fell in Lander. This was 9.4 inches below the 30 year normal of 104.1 inches. However, compared to the POR average of 85.6 inches, this was 9.1 inches above normal. February was the snowiest month in 2003 with 21.6 inches of snowfall.

Year

 

2000

2001

2002

2003

Snowfall

58.5

52.5

88.3

94.7

30yr Norm

104.1

104.1

104.1

104.1

Dep/Norm

-45.6

-51.6

-15.8

-9.4

 

TEMPERATURES - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

28.3

18.0

36.6

47.7

54.4

60.6

76.0

73.4

56.8

50.4

24.4

25.3

46.0

                           

30yr Avg

20.2

25.6

35.4

43.7

53.2

63.5

70.7

69.3

58.6

46.3

30.3

21.2

44.8

Dep/Norm

8.1

-7.6

1.2

4.0

1.2

-2.9

5.3

4.1

-1.8

4.1

-5.9

4.1

1.2

                           

POR Avg

19.6

24.0

32.9

42.9

52.5

61.8

69.7

67.9

57.6

45.6

31.0

21.2

43.9

Dep/Norm

8.7

-6.0

3.7

4.8

1.9

-1.2

6.3

5.5

-0.8

4.8

-6.6

4.1

2.1

                           

PRECIPITATION - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

0.32

1.10

0.95

0.88

1.28

1.70

0.43

0.74

1.06

0.91

0.07

0.82

10.26

                           

30yr Avg

0.52

0.54

1.24

2.07

2.38

1.15

0.84

0.57

1.14

1.37

0.99

0.61

13.43

Dep/Norm

-0.20

0.56

-0.29

-1.19

-1.10

0.55

-0.41

0.17

-0.08

-0.46

-0.92

0.21

-3.17

                           

POR Avg

0.48

0.66

1.20

2.19

2.42

1.30

0.78

0.54

1.07

1.36

0.82

0.60

13.42

Dep/Norm

-0.16

0.44

-0.25

-1.31

-1.14

0.40

-0.35

0.20

-0.01

-0.45

-0.75

0.22

-3.16

                           

SNOWFALL - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

4.8

21.6

20.1

0.4

3.9

0.0

0.0

0.0

5.4

18.5

2.7

17.3

94.7

                           

30yr Avg

9.7

9.4

17.4

20.8

6.5

0.4

0.0

0.0

3.0

10.0

15.5

11.5

104.1

Dep/Norm

-4.9

12.2

2.7

-20.4

-2.6

-0.4

0.0

0.0

2.4

8.5

-12.8

5.8

-9.4

                           

POR Avg

6.8

9.6

14.8

17.2

5.7

0.8

0.0

0.0

2.2

8.7

10.9

8.6

85.6

Dep/Norm

-2.0

12.0

5.3

-16.8

-1.8

-0.8

0.0

0.0

3.2

9.8

-8.2

8.7

9.1

 

 

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2003 ANNUAL SUMMARY FOR RIVERTON, WYOMING

For the year 2003, Riverton Wyoming was warmer than normal, wetter than normal, with above normal snowfall. This is based on comparing averages of the daily values with the 30 year normals from 1971-2000.

TEMPERATURE

Even though the year 2003 was warmer than normal, three months during the year were colder than normal. The yearly average for 2003 was 45.6 degrees, which was 2.5 degrees above the 30 year normal of 43.1 degrees. Compared with the POR (Period of Record - 1919-2003), 2003 was 2.3 degrees above the average of 43.3 degrees.

Month

Feb

Jun

Nov

Average

15.5

61.8

23.7

30yr Normal

21.5

63.3

27.8

Dep/Normal

-6.0

-1.5

-4.1

February had the greatest departure from normal with 6 degrees below normal.

Year

 

2000

2001

2002

2003

Temperature

45.1

44.9

46.2

45.6

30yr Norm

43.1

43.1

43.1

43.1

Dep/Norm

+2.0

+1.8

+3.1

+2.5

 

 

PRECIPITATION

The year 2003 received 10.03 inches of precipitation, which was 1.45 inches above the 30 year normal of 8.58 inches. Compared with the POR average, the year was 1.40 inches above the long term average. June had the greatest monthly departure from normal with 2.59 inches, which was 1.44 inches above the 30 year normal of 1.15. Compared with the POR average, June was 1.28 inches above normal.

2003 in Riverton was the wettest of the past 4 years.

Year

 

2000

2001

2002

2003

Precipitation

6.51

4.96

7.36

10.03

30yr Norm

8.58

8.58

8.58

8.58

Dep/Norm

-2.07

-3.62

-1.22

+1.45

 

 

SNOWFALL

For the year, 49.9 inches of snow fell in Riverton. This was 19.2 inches above the 30 year normal of 30.7 inches. Compared to the POR average of 33.6 inches, this was 16.3 inches above normal. February was the snowiest month in 2003 with 15.3 inches of snowfall.

Year

 

2000

2001

2002

2003

Snowfall

31.8

31.8

47.6

49.9

30yr Norm

30.7

30.7

30.7

30.7

Dep/Norm

+1.1

+1.1

+16.9

+19.2

 

TEMPERATURES - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

24.8

15.5

35.2

49.5

55.9

61.8

75.3

73.8

57.4

50.7

23.7

23.5

45.6

                           

30yr Norm

13.6

21.5

34.7

43.9

53.5

63.3

69.9

67.9

56.9

44.4

27.8

14.5

43.1

Dep/Norm

11.2

-6.0

0.5

5.6

2.4

-1.5

5.4

5.9

0.5

6.3

-4.1

9.0

2.5

                           

POR Norm

14.8

22.1

33.4

43.9

53.9

62.9

70.3

67.9

57.4

44.9

28.3

17.3

43.3

Dep/Norm

10.0

-6.6

1.8

5.6

2.0

-1.1

5.0

5.9

0.0

5.8

-4.6

6.2

2.3

                           

PRECIPITATION - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

0.14

1.15

0.97

0.70

1.30

2.59

0.14

0.96

0.81

0.76

0.09

0.42

10.03

                           

30yr Norm

0.27

0.24

0.48

1.01

1.78

1.15

0.73

0.49

0.88

0.81

0.47

0.38

8.58

Dep/Norm

-0.13

0.91

0.49

-0.31

-0.48

1.44

-0.59

0.47

-0.07

-0.05

-0.38

0.04

1.45

                           

POR Norm

0.21

0.25

0.47

1.13

1.74

1.31

0.76

0.48

0.83

0.86

0.46

0.27

8.63

Dep/Norm

-0.07

0.90

0.50

-0.43

-0.44

1.28

-0.62

0.48

-0.02

-0.10

-0.37

0.15

1.40

                           

SNOWFALL - 2003

 

JAN

FEB

MAR

APR

MAY

JUN

JUL

AUG

SEP

OCT

NOV

DEC

ANN

2003

2.2

15.3

11.0

1.5

0.7

T

0.0

T

0.0

12.6

1.7

4.9

49.9

                           

30yr Norm

4.8

4.5

4.6

4.3

0.5

0.0

0.0

0.0

0.7

2.5

4.9

5.5

30.7

Dep/Norm

-2.6

10.8

6.4

-2.8

0.2

0.0

0.0

0.0

-0.7

10.1

-3.2

-0.6

19.2

                           

POR Norm

3.5

4.1

5.4

5.5

1.0

0.2

0.0

0.0

0.6

3.5

5.1

4.3

33.6

Dep/Norm

-1.3

11.2

5.6

-4.0

-0.3

-0.2

0.0

0.0

-0.6

9.1

-3.4

0.6

16.3

 

 

 

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