estimating wind speed

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03
03
SA
65 posts
03 03
SA, 65 posts
12 Apr 2010 12:34pm
anyone got any tricks?
harry potter
harry potter
VIC
2777 posts
VIC, 2777 posts
12 Apr 2010 1:39pm
15knots white caps appear on the wave tops
25knots the sand starts lifting and blowing off the beach.
Windchaser
Windchaser
QLD
72 posts
QLD, 72 posts
12 Apr 2010 1:40pm
Yeh! this one works every time.
Face the direction the wind is coming from.
Bend over until your face is directly looking at your ring. If your ring is twitching you know its 25 to 30 kns. No twitching. Simple. Its not worth kiting.
superlizard
superlizard
VIC
702 posts
VIC, 702 posts
12 Apr 2010 2:24pm
1 - use Anemometers... turn on... face into wind... read the screen for couple of minutes to get an average... include 15% error margin

2 - if your kite is parked on the sand, and it keeps moving and requires anchoring, it's probably above 25 knts...

3 - if other kiters with 12s and 13s are stalling, and you can see them all working their kites hard, and all of them have congregated in the same most downwind spot, it means it's around 15/16 knots and less...

4 - after every session (after you felt the wind on your face and body), go home and check the actual recorded wind speed by your nearest weather beacon... after couple of years, you won't need any devices... you'll just know...

odetojak
odetojak
NSW
54 posts
NSW, 54 posts
12 Apr 2010 2:50pm
Just look out for the bat signal.

No matter what the wind speed genuinely is, the second that first kite goes up, everyone else just races to that same spot and puts up the same size kite regardless.
dusta
dusta
WA
2940 posts
WA, 2940 posts
12 Apr 2010 1:25pm
westozwind said...

Check this for a fairly good guide
http://www.unc.edu/~rowlett/units/scales/beaufort.html

On seabreeze when making a post, I find the following scale handy...

Small whitecaps = 20 Knots
Sand starts moving on beach = 30 Knots
It feels "really windy" = 35 knots plus.




think you are a bit off there .


whitecaps on the water usually means its around 15 knots .

20 knots the sand starts lifting off the beach

I say 15 knots because i boat almost every weekend and when it's 15+ knots there are whitecaps of some description on the way to rotto .
sir ROWDY
sir ROWDY
WA
5378 posts
WA, 5378 posts
12 Apr 2010 1:29pm
30knots - Most kiters stay at home, not many people at the beach, you start to see an odd thing that looks like a surfboard with a sail poking out of it.
Miss Jessie
Miss Jessie
NSW
181 posts
NSW, 181 posts
12 Apr 2010 3:43pm
The sand moving...

I throw a bit of sand in the air (aka Matthew Lloyd style) and then I knew exactly which kite I was going to put up, depending on how far the sand sailed!
(note toss in air from chest height give or take) aka:
-No sail (under 2 foot)... go home
-Little sail (a few feet), my big kite
-Medium distance, my medium kite
-A few meters, my small kite
-Can’t see where the sand came down, board is buried in sand after 5mins… prob better go home and tie down the outdoor furniture.

(Note in rain (wet sand) you need to dig and find the dry stuff)

Until I realized my method was flawed. While ideal for say Woodies, with heavy chunky sand, it proved quite useless for say Gero with fine sand that was moving before it even hit 20 knots!!

So basically find a method you like for your location, test it against how your session was and then use it for future!
westozwind
westozwind
WA
1419 posts
WA, 1419 posts
12 Apr 2010 1:48pm
Dusta,
It was a little tongue in cheek to some posts that have guy's posting their "epic" 35 Knot + sessions. That rating is for them...

I agree,
12-15 = whitecaps
18-20 = sand moving (especially Cervantes where it's really fine sand)
30+ = even polies are trying to find a handkerchief to rig

dusta
dusta
WA
2940 posts
WA, 2940 posts
12 Apr 2010 2:10pm
sorry dood crook as a dog since saturday and don't have a sense of humour atm :P
Trant
Trant
NSW
601 posts
NSW, 601 posts
12 Apr 2010 4:43pm
Simple illustrated version of the Beaufort scale



(and always good to refer to when people make claims of kiting in 60+ knots )
stumac
stumac
7 posts
7 posts
12 Apr 2010 3:33pm
odetojak said...

Just look out for the bat signal.

No matter what the wind speed genuinely is, the second that first kite goes up, everyone else just races to that same spot and puts up the same size kite regardless.



Amen to that ha ha. If i so much as see a trainer kite up its bye bye work cos the winds calling.
old4dy
old4dy
NSW
147 posts
NSW, 147 posts
12 Apr 2010 6:05pm
This scale was developed in 1805 by British Rear-Admiral Sir Francis Beaufort as a standard for estimating wind speed, not with instrumentation, but by using your own senses and observing the wind#65533;s effects on your surroundings. The scale is still used today by mariners and more recently kite fliers. Most kite manufacturers use the Beaufort Scale to list the suitable wind ranges for their products.

Bft. Force Knots Mph. Kph Meters/Sec. Classification Appearance on Land Appearance on Water For the Power Kite Flier
0 < 1 < 1.15 <1.83 < 0.51 Calm Calm, smoke rises vertically Sea surface smooth and mirror-like. Relax, hang out, inspect your kite, wait for wind#65533;
1 1 - 3 1.1 #65533; 3.5 2 -5.5 0.5 #65533; 1.5 Light Air Smoke drift indicates wind direction. Wind vanes are still. Scaly ripples, no foam crests. 7 meter kites might fly, but usually only veterans have these. Novices with smaller kites will have to wait for more.
2 4 - 6 4.6 #65533; 7 7.5 #65533; 11 2 #65533; 3 Light Breeze Wind Felt on face, leaves rustle, wind vanes begin to move. Small wavelets, crests glassy,no breaking. 5 meter and larger can come out of the bag. Beginners should be wary of gusts, if flying the big ones.
3 7 -10 8 #65533; 11.5 13 #65533; 18.5 3.5 - 5 Gentle Breeze Leaves and small twigs constantly moving, light flags moving. Large wavelets, crest begin to break, scattered whitecaps. Novices with smaller kites up to 3-4m can have safe fun. Veterans with bigger kites are feeling the pull and starting to smile.
4 11 - 16 12.5 #65533; 18.5 20 #65533; 29 5.5 - 8 Moderate Breeze Dust, leaves and loose paper lifted, small tree branches move. Small waves 1 -4 ft. becoming longer, numerous whitecaps. Mid-sized kites (2.5-3.5m) are waking up and starting to pull hard. Beginners can have a blast with even 1.5m kites.
5 17 - 21 19.5 - 24 31 #65533; 38.5 9 - 11 Fresh Breeze Small trees with leaves begin to sway. Moderate waves, 4-8 ft. taking longer from, many whitecaps, some spray. Big kites are all put away and mid-sized are in the hands of experts only. Novices without smaller kites should pack up.
6 22 - 27 25 - 31 40.5 #65533; 49.5 11.5 - 14 Strong Breeze Larger tree branches moving, whistling in wires. Larger waves, 8-13 ft., whitecaps common, more spray Experts with the right gear are either grinning or scared. Others have quit or been blown away.
7 28 - 33 32 - 37 51 #65533; 60.5 14.5 - 17 Near Gale Whole trees moving, resistance to walking against wind. Sea heaps up 13 #65533; 20 ft., white foam streaks off breakers. The craziest veterans are down to their smallest kites. Others have wisely packed up.
8 34 - 40 39 - 46 62 - 73 17.5 #65533; 20.5 Gale Whole trees in motion, resistance to walking against wind. Moderately high (13-20 ft) waves of greater length, edges of crests begin to break into spindrift, foam blown in streaks. Everybody is inside. No one wants to get hurt today.



utah homes

old4dy
old4dy
NSW
147 posts
NSW, 147 posts
12 Apr 2010 6:07pm
Bugger it stuffed up Go here for a good printable version for kiters



www.coastalwindsports.com/BeaufortScale.html
au_rick
au_rick
WA
752 posts
WA, 752 posts
12 Apr 2010 4:11pm
strange that no-one mentioned: ANEMOMETER !
03
03
SA
65 posts
03 03
SA, 65 posts
12 Apr 2010 5:48pm
au_rick said...

strange that no-one mentioned: ANEMOMETER !


yeh super lizard did mention using one
au_rick
au_rick
WA
752 posts
WA, 752 posts
12 Apr 2010 4:40pm
03 said...

au_rick said...

strange that no-one mentioned: ANEMOMETER !


yeh super lizard did mention using one


thanks, I missed that one !!
dave......
dave......
WA
2119 posts
WA, 2119 posts
12 Apr 2010 4:49pm
who gives a ****, just put up a 12m bow. shee'll be right???????
Morg
Morg
QLD
129 posts
QLD, 129 posts
12 Apr 2010 7:54pm
Ask the local know it all, hardcore kite expert what he thinks then deduct 10 to 12 knots from that and you'll be pretty close.
StinkyPete
StinkyPete
WA
241 posts
WA, 241 posts
12 Apr 2010 8:49pm
How bout checking the graphs on seabreeze. Last time i checked they still record wind strength and even the direction. Ask someone with an iphone
deXtrous
deXtrous
NSW
451 posts
NSW, 451 posts
13 Apr 2010 12:38am
The easiest way: Get the 'Wind Meter' app on your iphone.
phrase
phrase
WA
228 posts
WA, 228 posts
13 Apr 2010 1:53am
Not sure about the actual speeds. But for me, if there are loads of people lying carefree on the beach, it`s still too week. When they start to get up and leave it`s perfect. When sand starts stinging as you are setting up then get the smallest kite you have.
03
03
SA
65 posts
03 03
SA, 65 posts
13 Apr 2010 9:35am
What about if the nearest wind meters are about 100km away from where you kite
ali
ali
QLD
68 posts
ali ali
QLD, 68 posts
13 Apr 2010 11:19am
I tend to use the way the water reacts to the wind, the problem with sand is that beach sand varies from super fine to shell grit in various locations, so it takes differing wind velocities to pick it up and move it!
03
03
SA
65 posts
03 03
SA, 65 posts
13 Apr 2010 10:59am
I'll probably use this one -

If the wind is strong enough to move my 10m when its laying on the beach. Its too strong
wishy
wishy
WA
1501 posts
WA, 1501 posts
13 Apr 2010 10:15am
If you take off your pants and your nuts start kitelooping around your dick it's over 30 knots. Doesn't work in cold climates though.
Skid
Skid
QLD
1499 posts
QLD, 1499 posts
13 Apr 2010 1:53pm
Morg said...

Ask the local know it all, hardcore kite expert what he thinks then deduct 10 to 12 knots from that and you'll be pretty close.


This might work in strong wind... for light wind sessions you may have to add 5-7 knots. (you know the type, my kite/board/self is so good, going upwind & boosting in 7 knots)
SaveTheWhales
SaveTheWhales
WA
1913 posts
WA, 1913 posts
13 Apr 2010 5:10pm
this always works

www.josepino.com/?weather_rock
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