Wind

[WinnieTheKhwai]

Windy today..

Almost slammed the glass out of the doors.

What's that all about, I wonder.

[alfieconn]

Almost slammed the glass out of the doors.

Perhaps you need to go to the Doctor if you have it that bad :D

[Ulysses G.]

It is about cool season is coming, but it will not be very very noticeable for another month or so.

[gotlost]

Actually it was just some of the blowhards on the forum letting go.

[cloudhopper]

It's calm on the surface up here in Pai but there was a huge lenticular cloud stack over the mountains to the west indicating some very high winds aloft.

[Ricardo]

Rimping mee-Chok-Plaza have McGarrett's baked-beans @ 35B, marked down from usual 45B, coincidence ? I think not !

[bangkokcitylimits]

Windy today..

Almost slammed the glass out of the doors.

What's that all about, I wonder.

Wind consists of the bulk movement of air.

so now you know that also.

[Blinky Bill]

WTK, don't you remember the simple stuff from back in your schools days? Here is a brief explantion to remind you.

Wind is caused by air flowing from high pressure to low pressure. Since the Earth is rotating, however, the air does not flow directly from high to low pressure, but it is deflected to the right in the Northern Hemisphere, to the left in the Southern Hemisphere, so that the wind flows around the high and low pressure areas. This effect of the wind "feeling the Earth turn underneath it" is important for very large and long-lived pressure systems. For small, short-lived systems such as in the cold outflow of a thunderstorm the wind will flow directly from high pressure to low pressure.

The closer the high and low pressure areas are together, the stronger the "pressure gradient", and the stronger the winds. On weather maps, lines of constant pressure are drawn which are called "isobars". These isobars are usually labeled with their pressure value in millibars. The closer these lines are together, the stronger the wind. The curvature of the isobars is also important to the wind speed. Given the same pressure gradient (isobar spacing), if they are curved anticyclonically the wind will be stronger. If the isobars are curved cyclonically the wind will be weaker.

Near the surface of the Earth, friction from the ground slows the wind down. During the day, when convective mixing is stirring up the lower atmosphere, this effect is minimized. At night, however, when convective mixing has stopped, the surface wind can slow considerably, or even stop altogether.

Wind can also be thought of one way that the atmosphere moves excess heat around. All wind is, directly or indirectly, helping to transport heat either away from the surface of the Earth, where sunlight causes an excess of energy buildup, or from warm regions usually the tropics to cooler regions usually the higher latitudes. Extratropical cyclones accomplish much of this heat transport outside of the tropics, while in the tropics the trade winds, monsoons, and hurricanes transport much of the heat.

2 interesting facts particularly for you WTK............

WORLD RECORD WIND SPEED. The highest wind speed ever recorded on the surface of the Earth was 231 mph on April 12 1934, atop Mt. Washington, New Hampshire. This high-elevation weather station experienced the winds of an extremely strong jet stream that had descended unusually low in the atmosphere.

THE WIND AFFECTS THE EARTH'S ROTATION. During the northern hemisphere winter, the stronger westerly winds that build up in the Northern Hemisphere, combined with frictional drag at the Earth's surface, actually produce a very small, but measurable, increase in the speed of rotation of the Earth.

[Greenside]

Thanks for that great explanation BB. I'd forgotten a lot of that!

[LJW]

It's calm on the surface up here in Pai but there was a huge lenticular cloud stack over the mountains to the west indicating some very high winds aloft.

'huge lenticular cloud'

[Blinky Bill]

'huge lenticular cloud'

Personally I love the mammatus cloud formation (I'm not trying to be funny), fairly rare but quite a sight when you see one.

Mammatus Cloud

Lenticular Cloud

[Tywais]

Since the Earth is rotating, however, the air does not flow directly from high to low pressure, but it is deflected to the right in the Northern Hemisphere, to the left in the Southern Hemisphere, so that the wind flows around the high and low pressure areas.

Coriolis effect

[Ta22]

Thai Wind had never been more amazing since last years - while i was away in bangkok . a Weird and crazy wind blow down a Lamp pole Height tree which landed on top of my MERC BENZ !!!!!!!!!!!!!

my father called me and told me that he heard a large BANG in the middle of the Night and i Told him just ignore it , it must be some crazy thai playing with Firework . whahahaha a

the Next morning he clal me again and told me he got 2 Bad news .

------

he said

1st The BENZ is FLOODED - i was like you forget the WIndow is it !!!

then he told me the Second BAD NEWS !

the tree on top of it smashed the Rear wind screen ( weird name- WIND SCREEN !! )

and the rain did the flooding whahhahaha

HOLY COW !!!!!!!!!

THAI WIND

[ThaiWx]

...The closer the high and low pressure areas are together, the stronger the "pressure gradient", and the stronger the winds. On weather maps, lines of constant pressure are drawn which are called "isobars". These isobars are usually labeled with their pressure value in millibars. The closer these lines are together, the stronger the wind. The curvature of the isobars is also important to the wind speed. Given the same pressure gradient (isobar spacing), if they are curved anticyclonically the wind will be stronger. If the isobars are curved cyclonically the wind will be weaker. ...

This mornings synoptic (weather) chart (0700 local time) showed a high pressure cell over China with many isobars grouped together nearer to us. This probably contributed to the high winds earlier today.

[cloudhopper]

It's calm on the surface up here in Pai but there was a huge lenticular cloud stack over the mountains to the west indicating some very high winds aloft.

'huge lenticular cloud'

The high winds flow up and over the ridge and form a standing wave like a river haystack. If there's enough moisture a cloud forms at the leading edge where the air is pushed up and dissipates at the trailing edge where it descends again while the lens-shaped cloud itself remains stationary. I once flew a glider to 23,000 feet in front of one of these in SoCal.

edit - nice pics BB

[trainman34014]

Thai Wind had never been more amazing since last years - while i was away in bangkok . a Weird and crazy wind blow down a Lamp pole Height tree which landed on top of my MERC BENZ !!!!!!!!!!!!!

my father called me and told me that he heard a large BANG in the middle of the Night and i Told him just ignore it , it must be some crazy thai playing with Firework . whahahaha a

the Next morning he clal me again and told me he got 2 Bad news .

------

he said

1st The BENZ is FLOODED - i was like you forget the WIndow is it !!!

then he told me the Second BAD NEWS !

the tree on top of it smashed the Rear wind screen ( weird name- WIND SCREEN !! )

and the rain did the flooding whahhahaha

HOLY COW !!!!!!!!!

THAI WIND

Serves you right for having a Merc' !!!!

[NancyL]

BB, I love your explanation except for the part about the winds flowing to the right in the Northern Hemisphere and to the left in the Southern. It would really depend upon the "viewers" framer of reference to determine if the winds were from the right or the left. The correct explanation would be to the east in the Northern Hemisphere and to the west in the Southern.

Why is it that people from the U.S. seem to be the only English-speakers who can communicate directions correctly?

[Beetlejuice]

Next time try pointing your ass at the wall instead. And if you were to concentrate on the silent smelly ones, you would have to change your name to Winnie The Poo.

[T_Dog]

'huge lenticular cloud'

Personally I love the mammatus cloud formation (I'm not trying to be funny), fairly rare but quite a sight when you see one.

Mammatus Cloud

Lenticular Cloud

BB.... The Milk and Cheese Icing I've experienced while flying in mammatus clouds in convective weather over Wisconsin has caused me many moments of udder panic. Thanks for the mammories!

[Ta22]

Thai Wind had never been more amazing since last years - while i was away in bangkok . a Weird and crazy wind blow down a Lamp pole Height tree which landed on top of my MERC BENZ !!!!!!!!!!!!!

my father called me and told me that he heard a large BANG in the middle of the Night and i Told him just ignore it , it must be some crazy thai playing with Firework . whahahaha a

the Next morning he clal me again and told me he got 2 Bad news .

------

he said

1st The BENZ is FLOODED - i was like you forget the WIndow is it !!!

then he told me the Second BAD NEWS !

the tree on top of it smashed the Rear wind screen ( weird name- WIND SCREEN !! )

and the rain did the flooding whahhahaha

HOLY COW !!!!!!!!!

THAI WIND

Serves you right for having a Merc' !!!!

whahahahhahaha i have about 7 cars but it was really one amazing adventure was thinking to scrap it to the junk yard but one workshop offer me a very good restoration price so i restore it .

[Blinky Bill]

'huge lenticular cloud'

Personally I love the mammatus cloud formation (I'm not trying to be funny), fairly rare but quite a sight when you see one.

BB.... The Milk and Cheese Icing I've experienced while flying in mammatus clouds in convective weather over Wisconsin has caused me many moments of udder panic. Thanks for the mammories!

Good one, T Dog. The last great mammatus formation I experienced was in Abha, south west Saudi, big storm was brewing. I was in Nana Plaza a few weeks ago, but that's another story.