Table of Contents
How does the wind move?
Winds generally blow from high-pressure areas to low-pressure areas. The Coriolis effect makes wind systems twist counter-clockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere. The Coriolis effect causes some winds to travel along the edges of the high-pressure and low-pressure systems.
How does air movement affect weather?
The way the air moves affects the weather, because winds move heat and cold temperatures as well as moisture from one place to another, transporting conditions from one geographical zone to another. The way winds pass each other, and the direction they move, also affects what weather a region will see on any given day.
What is the air pressure of fair weather?
A barometric reading over 30.20 inHg is generally considered high, and high pressure is associated with clear skies and calm weather. If the reading is over 30.20 inHg (102268.9 Pa or 1022.689 mb): Rising or steady pressure means continued fair weather. Slowly falling pressure means fair weather.
What is an example of fair weather?
Fair-weather refers to mild weather, so the idiom refers to a friend who can be relied upon when the weather is good but abandons you when the weather turns stormy. There is a related famous sailing saying, the fair-weather sailor. A real sailor sails all the time and can handle things even in stormy seas.
How can you tell the direction of wind?
Smoke rises vertically with little if any drift. Direction of wind shown by smoke drift, not by wind vanes. Little if any movement with flags. Wind barely moves tree leaves. Wind felt on face. Leaves rustle and small twigs move. Ordinary wind vanes move.
How does the direction of the wind affect the weather?
Airplanes taking off and landing at airports will be into the direction of the wind. The vertical direction of wind motion is typically very small (except in thunderstorm updrafts) compared to the horizontal component, but is very important for determining the day to day weather.
What kind of wind do leaves move in?
Light Breeze: 4 to 7 mph: Wind felt on face. Leaves rustle and small twigs move. Ordinary wind vanes move. 3: Gentle Breeze: 8 to 12 mph: Leaves and small twigs in constant motion. Wind blows up dry leaves from the ground. Flags are extended out. 4: Moderate Breeze: 13 to 18 mph: Wind moves small branches.
What does the wind do to a tree?
Wind barely moves tree leaves. Wind felt on face. Leaves rustle and small twigs move. Ordinary wind vanes move. Leaves and small twigs in constant motion. Wind blows up dry leaves from the ground. Flags are extended out. Wind moves small branches. Wind raises dust and loose paper from the ground and drives them along.