High Pressure Delivers Sun To Start Week

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated.

WEST MICHIGAN – I always wonder as a Meteorologist if people really know, understand, or care (for that matter) what high pressure or low pressure is and how it affects our weather. It’s pretty simple actually, but these two atmospheric pressure systems deliver totally different weather. My point is if you understand each one, then you’ll know what kind of weather to expect when you see them on a map or over our area.

Low pressure is usually associated with clouds and precipitation. The system itself pulls air inward to the center of circulation and forces it to rise. Rising air motion tends to lead to clouds and precipitation because the air cools as it rises and the moisture can condense out on to cloud condensation nuclei and form clouds.

On the other hand, high pressure creates something called subsidence. It forces air to sink. That sinking promotes a dry air mass and the end result is usually fair weather with sunshine. Note the high is exactly the opposite of the low.

Sunshine will rule over Michigan on Sunday and Monday, but slowly be cut-off Tuesday as another low pressure system presses in to the region. Our next rain chance arrives Tuesday P.M.. Get the complete West Michigan forecast at www.fox17online.com/weather.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )


Connecting to %s

1 Comment