No Flying on Saturday 11th August 2012!!

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John.com
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Re: No Flying on Saturday 11th August 2012!!

Postby John.com » Mon Aug 13, 2012 4:48 pm

Bulletjie wrote:John.com = Weather.com (^^)
Nah, just like serving my fellow pilots! ^*^^
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Re: No Flying on Saturday 11th August 2012!!

Postby Tumbleweed » Mon Aug 13, 2012 7:48 pm

FASC Secunda. With 3 day predictions please? vhpy
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Re: No Flying on Saturday 11th August 2012!!

Postby Air Hog » Mon Aug 13, 2012 8:43 pm

Tumbleweed wrote:FASC Secunda. With 3 day predictions please? vhpy
Try this link: http://www.windguru.cz/int/index.php?sc=393680

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Re: No Flying on Saturday 11th August 2012!!

Postby John.com » Mon Aug 13, 2012 8:48 pm

Tumbleweed wrote:FASC Secunda. With 3 day predictions please? vhpy
With pleasure, Sir!

Here's Secunda (S 26.5192º E 029.2089º) for 7 days . . . . http://www.windguru.cz/int/index.php?vs=1&sc=119314

Firstly, the location of the weather report (see green arrow)
Weather - Secunda - 12.08.14 - MAP.jpg
Now, the weather . . . .
Weather - Secunda - 12.08.14 - 1.jpg
WInds aloft . . . .
Weather - Secunda - 12.08.14 - 2.jpg
The HELP for interpreting these graphs is as follows:
Weather - Secunda - 12.08.14 - HELP.jpg
Happy to be of service! ^*^^
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Re: No Flying on Saturday 11th August 2012!!

Postby Bundy » Tue Aug 14, 2012 6:05 am

Absolutely nothing wrong with being cautious WRT the weather John. The upper winds are extremelly important, a factor precious few pilots bother to take into account.
The weather is probably the factor that most of us understand the least about, but time and time again you will see serious risks being taken. Did you know that the maximum wind Solowings states can be flown in is 12 knts? How many times have you seen trikes returning from a sortie battling winds much stronger than this aloft...and sometines landing in 15 or worse?
I have seen aircraft in the air flying flips for first timers within 5 miles of an approaching CB :shock: One just has to read through some encounters (such as Asterix has posted in the weather topic on a gust front) to realise just how dangerous this can be?
Generally speaking...the weather in the morning only gets worse, with the reverse happening in the PM. 95% of the time, 4-5knt winds on the deck at let's say 7am will result in much stronger wind a few hours on. Especially with a prediction like Sat 11th Aug. Still there will be pilots who choose to take off on that 100 mile CC flight....one has to ask why?

In a country that has nearly 300 days of sunshine, and probably 250 days of good flying conditions....why do we keep putting ourselves at risk?

I feel feathers dissapointing a PAX or my flying buddies when I tell them the conditions are not good enough for me to fly. It will never be worth the risk of bending your aerie or yourself..or worse...your PAX.
By all means....go to the airfield..... Pre flight and assess the conditions for yourself....but it will always benefit you to factor in the forecast for the next 2-3 hours into account. :)
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Re: No Flying on Saturday 11th August 2012!!

Postby Tumbleweed » Tue Aug 14, 2012 7:41 am

Thanks a lot John. !!!!
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Re: No Flying on Saturday 11th August 2012!!

Postby Asterix » Tue Aug 14, 2012 4:36 pm

Ja taking that next few hours into account is important. Saturday morning in the Brits vicinity was good weather untill about 10h00. Wind then started to blow the hell out of earth - same for Sunday until Sunday afternoon late. I was tied down at Kokoriba until Monday morning, when I managed to fly back to Potties in 2 hours in good weather - but on arrival, again - had to contend with a 12 - 15 kts crosswind on landing. These coldfronts are bastards - I cannot remember when last they were so frequent - one after the other. Will this ever end?

Thanks John for your words of caution and your interest in the weather! Was nice meeting you on your flip to Kokoriba.

If I can ad something: As a general rule of thumb, low pressure systems (eg coldfronts) are associated with deteriorating weather - high winds / low cloud and precipitation , the second two dependent on humidity and the difference between real temperature and dew point temperature. Dry air with a big difference between the two temps mentioned will see crystal clear blue skies, with a false sense of good weather. But the winds will still be high. A cold front is not merely a localised difference in pressure between two bodies of air resultant from the warming of the earth - it is a vast and strong low pressure system, sucking in the air from all around over hundreds of miles, and the minute those winds pick up it does so fast and drastically. Tie down your trike, book another night's accomodation, and go have a beer.
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Re: No Flying on Saturday 11th August 2012!!

Postby Triker » Fri Aug 17, 2012 11:14 am

Hallo John

How about a weather update for the weekend?
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Re: No Flying on Saturday 11th August 2012!!

Postby Asterix » Fri Aug 17, 2012 4:18 pm

Even without John's windchart - it looks crappy with 0% chance of flying without scaring yourself to death. Ek slaap maar liewer more bietjie laat...
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Re: No Flying on Saturday 11th August 2012!!

Postby John.com » Fri Aug 17, 2012 5:20 pm

Triker wrote:Hallo John

How about a weather update for the weekend?
Sure, but let me start a topic for 'Magaliesburg Weather' and then it can be updated as and when! Make sense?

Watch out for it . . . . (^^)
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Re: No Flying on Saturday 11th August 2012!!

Postby Louis Cole » Sat Aug 18, 2012 4:09 pm

So was dit toe ook by my vanmore,"crappy",bewolk,windkous stokstyf en geen kans vir vlieg nie.Was van plan om
Croswinds toe te vlieg.Die terugkom sou interessant gewees het.

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