Who do I believe?

Speed Devil · September 1, 2009

I was checking the weather for the coming weekend in Cape Town and this is what I get:

Tumbleweed · September 1, 2009

holy's useless fact of the day: did you know that windfarms can confuse doppler weather radars?

Speed Devil · September 1, 2009

Thanks o' wise one for that bit of useless info. I feel so much wiser. Now I will go impress my work colleagues with my new found wisdom.

leet22 · September 1, 2009

South Africa - Cape Town (wave: NWW3 01.09. 2009 00 UTC)

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Other...

GFS
01.09.2009
00 UTC

Tu
01.

We
02.

Th
03.

Fr
04.

05h

08h

11h

14h

17h

20h

05h

08h

11h

14h

17h

20h

05h

08h

11h

14h

17h

20h

05h

08h

11h

14h

17h

Wind speed (knots)

21

22

20

19

20

25

19

17

16

13

17

18

16

13

10

8

5

7

Wind direction

http://www.windguru.com/int/img/sipky/s15.gif

http://www.windguru.com/int/img/sipky/s14.gif

http://www.windguru.com/int/img/sipky/s15.gif

http://www.windguru.com/int/img/sipky/s14.gif

http://www.windguru.com/int/img/sipky/s13.gif

http://www.windguru.com/int/img/sipky/s14.gif

http://www.windguru.com/int/img/sipky/s15.gif

http://www.windguru.com/int/img/sipky/s14.gif

http://www.windguru.com/int/img/sipky/s15.gif

http://www.windguru.com/int/img/sipky/s14.gif

http://www.windguru.com/int/img/sipky/s12.gif

http://www.windguru.com/int/img/sipky/s11.gif

Wave (m)

3.2

3.3

3.4

3.5

3.7

5.1

5.5

5.7

5.6

5.3

5

4.1

4

3.9

3.8

3.4

3.5

Wave period (s)

6

7

8

9

10

11

12

11

10

11

12

Wave direction

http://www.windguru.com/int/img/sipky/s14.gif

http://www.windguru.com/int/img/sipky/s13.gif

http://www.windguru.com/int/img/sipky/s12.gif

http://www.windguru.com/int/img/sipky/s11.gif

http://www.windguru.com/int/img/sipky/s12.gif

http://www.windguru.com/int/img/sipky/s11.gif

http://www.windguru.com/int/img/sipky/s12.gif

http://www.windguru.com/int/img/sipky/s11.gif

http://www.windguru.com/int/img/sipky/s10.gif

*Temperature (?C)

14

15

16

15

14

15

16

14

13

15

17

16

14

13

14

17

18

17

Cloud cover (%)
high / mid / low

100

87

86

59

35

98

91

79

40

18

87

98

18

44

95

29

35

19

10

30

5

7

63

75

30

16

13

62

66

70

Rain (mm/3h)

0.3

0.6

0.3

6

1.8

Windguru rating

http://www.windguru.com/int/images/3rstar.gif

http://www.windguru.com/int/images/2rstar.gif

http://www.windguru.com/int/images/3rstar.gif

http://www.windguru.com/int/images/2rstar.gif

http://www.windguru.com/int/images/1rstar.gif

http://www.windguru.com/int/images/2rstar.gif

http://www.windguru.com/int/images/1rstar.gif

GFS
01.09.2009
00 UTC

Fr
04.

Sa
05.

Su
06.

Mo
07.

Tu
08.

20h

05h

08h

11h

14h

17h

20h

05h

08h

11h

14h

17h

20h

05h

08h

11h

14h

17h

20h

05h

08h

11h

14h

Wind speed (knots)

7

2

9

7

8

11

9

13

18

21

23

8

10

13

16

14

11

13

14

Wind direction

http://www.windguru.com/int/img/sipky/s9.gif

http://www.windguru.com/int/img/sipky/s11.gif

http://www.windguru.com/int/img/sipky/s8.gif

http://www.windguru.com/int/img/sipky/s7.gif

http://www.windguru.com/int/img/sipky/s8.gif

http://www.windguru.com/int/img/sipky/s6.gif

http://www.windguru.com/int/img/sipky/s14.gif

http://www.windguru.com/int/img/sipky/s8.gif

http://www.windguru.com/int/img/sipky/s7.gif

http://www.windguru.com/int/img/sipky/s5.gif

http://www.windguru.com/int/img/sipky/s6.gif

Wave (m)

3.5

3.6

3.7

3.9

4.4

4.5

4.6

5

5.4

5.2

5.1

5

4.9

4.7

4.5

Wave period (s)

13

12

13

14

13

12

Wave direction

http://www.windguru.com/int/img/sipky/s10.gif

*Temperature (?C)

14

13

15

16

18

17

14

13

14

16

17

16

15

12

11

9

10

13

15

Cloud cover (%)
high / mid / low

81

21

15

11

8

17

40

95

83

11

89

18

94

35

88

26

84

45

62

79

64

83

13

27

20

51

14

37

49

82

76

43

83

94

55

28

16

5

Rain (mm/3h)

0.7

1.7

0.3

Windguru rating

http://www.windguru.com/int/images/1rstar.gif

http://www.windguru.com/int/images/2rstar.gif

http://www.windguru.com/int/images/3rstar.gif

http://www.windguru.com/int/images/1rstar.gif

http://www.windguru.com/int/images/2rstar.gif

http://www.windguru.com/int/images/1rstar.gif

http://www.windguru.com/int/images/b1rstar.gif

http://www.windguru.com/int/images/1rstar.gif

Lat: -33.9, Lon: 18.46, Alt: 0 m, Timezone: SAST (UTC+2) http://www.windguru.com/int/images/sun.gif07:06 - 18:25

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droo · September 1, 2009

A weather man is one of the few jobs where you can get it wrong every day and not get fired. Almost as good as being a cabinet minister.

Christopher Brunsdon · September 1, 2009

Well why don't you all just ask Cassie !!!

Napalm · September 1, 2009

Unbelievably I found that this Norwegian site's predictions is way more accurate than our own weather service

http://www.yr.no/

Cassie · September 1, 2009

Well why don't you all just ask Cassie !!!

Hmmmmm I saw / heard that!!

Now WHO are you going to believe more...the company with all the measuring imnstruments all over the place or the company making use of second hand processed info???

I'll stick to the one which actually make the measurements....thank you.

Lately there's been a huge inprovement in accuracy of SAWS predictions....

Cassie2009-09-01 05:43:41

Spud · September 1, 2009

~~Oldgoa~~ Algoa FM told us that it was going to be 30? and here we are sitting with jackets on and freezing our acorns off!

Aquatic · September 1, 2009

See if the birds are flying towards joburg,works every time

Who do I believe?

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