[Troughs]

Hi

The North East has the symbol of a trough over it on the met office site, but the sky is blue and cloudless, and troughs are associated with low pressure. Can there be a cloudless sky in a low pressure area?

Regards

[Pressure]

There are other reason why it might be wetter, like warm air being lifted from sea level to a higher altititude and forming clouds but strictly speaking low pressure does not cause wet weather.

Wet weather tends to form at the boundary between warm and cold air with warm air being lifted up so it condenses out into clouds. These boundaries occur between a low pressure system and a high pressure system, so low pressure systems tend to sweep in wet weather ahead of them. If high pressure sits on top of you then there is no boundary and no wet weather. Anywhere were air rises, due to temperature differences between low and high levels (thunderstorms etc) or due to colder air sweeping in underneath warmer air (fronts) and you will get wet weather. A good indicator for where wet weather will be is the location of the Jet stream (high level- 300hPa strands of wind).

Hi

Thanks for replying and I understand it a lot better now!

[Pressure]

Hi

If I lived at a higher altitude where the pressure is lower, would the weather be wetter ( as low pressure is synonymous with wet weather)?

I am quite confused about the reasons for wet weather when there is low pressure.

Regards

[Convection?]

Hi Chris

Thankyou very much for your reply!

[Convection?]

Hi

I am wondering whether there is any difference between normal convection heating air and thermal convection?

Regards

[Weather Features]

Hi,

Thanks John. I meant down the East coast, I am trying to figure out what might have caused the cloud formation!

Regards

[Weather Features]

Hello

Can anyone explain the weather features that might have cause this ribbon cloud on the right? http://www.sat.dundee.ac.uk/demo.html

Regards

Cheviotranger

[Weatherstick]

Hi, was just wondering if anyone has a weatherstick?

[Cloud ID help]

as nh says its Cumulus, fair weather cumulus.

do you have a link to the piccs you are showing? is it a web site of clouds as I would imagine it has their names with them?

welcome to NW by the way.

No, I took them myself! they are from photobucket. Thanks for the welcome John :-)

[Cloud ID help]

[Cloud ID help]

Yes John, just wondering the identification of the cloud form.

[Cloud ID help]