When people quote wind speeds - call them on their bullsh*t

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Messages 81 - 100 of total 103 in this topic << First  |  < Previous  |  Show All  |  Next >  |  Last >>
HighTraverse

Trad climber
Bay Area
Nov 30, 2012 - 08:14am PT
Ed.....thanks for the Beaufort scale but this scale represents SUSTAINED winds.

Storm Force 64-72mph......Very rarely experienced on land; usually with widespread damage

Last night at the Sierra Azul RAWS (again), 1842 feet above sea level behind Los Gatos
30 5:32 S 38 G 70 55 54 100 4.08 54 26.2
30 4:32 S 41 G 71 54 53 100 3.85 54 26.2
30 3:32 S 41 G 74 54 53 100 3.68 54 26.2
30 2:32 S 45 G 83 54 53 100 3.52 54 26.2
30 1:32 S 43 G 72 54 53 100 3.41 54 26.2
30 0:32 S 36 G 72 54 53 100 3.33 54 26.2
Gusting over 70 MPH for 5 hours. Sustained only in the 40s
Those are the gusts that shook my house and woke my wife. I don't wake up till something big hits the house. Which it didn't last night.
Bugged the heck out of Sarah when we were at sea in full gales and I'd sleep my off time on the floor of the cabin.

Gusting to about 20 here now. calm as a sleeping kitten (comparatively)
Oh, and off topic: 3 inches of rain in last 24 hours.
Ron Anderson

Trad climber
Soon to be Nipple suckling Liberal
Nov 30, 2012 - 08:25am PT
you can be doing fifty mph down the road in washoe valley, toss a ciggy butt out and it will pass you..Seagulls often fly backwards there.

Rick,, too bad about the ruskys and their frames!;-)
10b4me

Boulder climber
member since 2002
Nov 30, 2012 - 08:53am PT
Cragman, that picture of Carson Peak is very impressive
rrider

climber
Mckinleyville, Ca
Nov 30, 2012 - 08:54am PT
Spring Ridge/Windy Hill.  Off Skyline Blvd, San Mateo County.  ~50mph
Spring Ridge/Windy Hill. Off Skyline Blvd, San Mateo County. ~50mph
Credit: rrider
Ron Anderson

Trad climber
Soon to be Nipple suckling Liberal
Nov 30, 2012 - 08:56am PT
NICE form! ^^^^^^^^^^^^^
HighTraverse

Trad climber
Bay Area
Nov 30, 2012 - 08:58am PT
^^^^
just down the road (12 miles as the hawk flies) from my place and 1000 feet lower
ydpl8s

Trad climber
Santa Monica, California
Nov 30, 2012 - 09:02am PT
It bears repeating that the density of air changes with altitude. Also (and this is kind of counter-intuitive) moisture Decreases density. So...40mph at sea level feels harder than a 40mph wind at 15,000 feet. Like the difference between getting hit by 20 mph bike vs a 20 mph car.

You can see from the graph below that as you increase height, density goes down, partial pressure of water vapor (vapor pressure) and temperature play a part also.

air density
air density
Credit: ydpl8s

EDIT: Well I didn't do too good of a job getting the formulas over here, so here is a good reference for all of you that want to look deeper into the subject.

http://wahiduddin.net/calc/density_altitude.htm

EDIT2: This is also directly tied into why water boils at lower temperatures at higher altitudes. Think back to your 8th grade physical science class when they put a beaker of water under a vacuum bell and got it to "boil" at room temperature as they decreased the pressure.
HuecoRat

Trad climber
NJ
Nov 30, 2012 - 09:11am PT
Keep Hurricane Sandy in mind. The top winds were 70 mph and the destruction was enormous. I will try to post some photos of what the wind did near my house. Literally hundreds of trees uprooted or snapped off.
HighTraverse

Trad climber
Bay Area
Nov 30, 2012 - 09:13am PT
Nice graph
So what is the mass density of air where I live at 800 meters when saturated with H2O?
Compared to dry air at sea level.

Or considered another way, when I was knocked off my feet on the summit of Rainier on a dry day, the wind speed would have been about 50% higher than required to knock me off my feet at sea level.
Or since I'm familiar with 30 kts of wind when sailing on the SF Bay, I'll be underestimating the wind speed when I'm at altitude?

Of course, without instrumentation, it's all a Wild Arsed Guess.
The user formerly known as stzzo

climber
Sneaking up behind you
Nov 30, 2012 - 09:21am PT
The flip side is that, since wind speed numbers don't mean much to most people, when someone says "60mph" i have no idea what that translates to and I think "Ok, i guess it was just blowing really hard".

So, I don't care if they're accurate.
TradEddie

Trad climber
Philadelphia, PA
Nov 30, 2012 - 09:34am PT
I've only climbed at JT once, and it was incredibly windy, I had a fist jam deep in a crack when a gust blew me sideways and I thought my arm was going to break. Twentynine Palms weather station recorded gusts at 70mph that day. call it BS all you like, you'll know when its 70mph.
Reilly

Mountain climber
The Other Monrovia- CA
Nov 30, 2012 - 09:38am PT
Although Donini claims to be the Windmaster amongst us I've heard from
reliable sources that Guido can break a gale with his bare hands.
nutjob

Gym climber
Berkeley, CA
Nov 30, 2012 - 10:10am PT
toss a ciggy butt out...
Lame!
survival

Big Wall climber
Terrapin Station
Nov 30, 2012 - 10:15am PT
I don't know about all that sh#t but it was blowing like 90 here a minute ago.....


( . )( . )
donini

Trad climber
Ouray, Colorado
Nov 30, 2012 - 10:16am PT
I'm just the land guy. Guido gets the 71% covered by ocean.
toadgas

Trad climber
los angeles
Nov 30, 2012 - 10:19am PT
was on top of Baldy near Los Angeles in winter and id guess the wind speed in excess of 200mph once i had to strap myeself ot a tree
rwedgee

Ice climber
canyon country,CA
Nov 30, 2012 - 10:51am PT
Sunday Rain before 10am, then snow. High near 40. Very windy, with a southwest wind around 55 mph, with gusts as high as 80 mph. Chance of precipitation is 100%. New snow accumulation of 6 to 10 inches possible.

http://forecast.weather.gov/MapClick.php?site=rev&smap=1&textField1=37.969583333333&textField2=-119.15875


Lee Vining
Riley Wyna

Trad climber
A crack near you
Nov 30, 2012 - 11:51am PT
The top winds were 70 mph and the destruction was enormous

Most of that was flooding and storm surge though.

I love weather and ran outside into storms even when i was a kid.

Ive been in three hurricanes now here in Texas- I've been out in 70 mile an hour winds driving around- sure it is blowing hard but it is not insane - now if you get gusts on top of that ..that is insane..

50 mile an hour winds with gusts to 70 is kind of crazy but not insane.

70 mile an hour winds with gusts up and above that starts getting insane.


People probably arnt lying they are just stating the gusts as the wind speed - plenty of climbers have been in 60 mile an hour gusts.

Em and I bouldered at the Buttermilks in 60 mile an hour gusts 2 years ago.
You had to hols on tight and get down on top of boulders when gusts hit - it was real hard..

I've been in big blizzards in Canada also and a storm in the Arctic.
You make me realise i need to get out in a lot more storms and take readings!!! yayayaya



Reilly

Mountain climber
The Other Monrovia- CA
Nov 30, 2012 - 11:58am PT
And then there is spending a night in a tent at 10,000' when an official
weather station nearby, but 3000' lower, recorded winds of 105 mph. Two
ice axes, two ice tools, flukes, deadmen (lol), and X ice screws did
the job. Thank you JanSport! The proto tent survived with only two of the
three poles breaking. (but didn't tear the sleeves!)
Caveman

climber
Cumberland Plateau
Nov 30, 2012 - 06:00pm PT
I got to experience winds in the neighborhood of 50mph recently. The wind speed was not that big of deal. The problem was that about 500ft to the west the wind was blowing to the south at 50mph. 500 ft. to the east the wind was blowing north at 50mph. Directly overhead at about 1500ft was an inverted hersheys kiss shaped cloud reaching for the ground. The most dangerous winds were wrapped in clouds and sounded like they had a freight train in them. Highest gusts in the storms exceeded well over 100mph. We didn't have trees down. We had forests disappear.
One thing I learned that day..........if you are a tornado chaser, you most likely do not want to catch one!
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