Astronomy, Photography and Weather

General Category => Weather & Atmospherics => Topic started by: Roman White on March 14, 2009, 10:40:38 pm



Title: A bit of convection (Mar.12)
Post by: Roman White on March 14, 2009, 10:40:38 pm
Some nice convcetion developed on Friday afternoon. It was enough warm outside (+10C), but as the clouds growed larger and the evening got closer, the temperature started to fall. Just in a few hours after this (at sunset) the sky became covered with thick As (later - with Ns) - it was a cyclone heading from S (it caused wet snow on Saturday).

(http://i44.tinypic.com/rk076u.jpg)

(http://i39.tinypic.com/rh8hgw.jpg)

(http://i40.tinypic.com/j75naf.jpg)

(http://i40.tinypic.com/35bxjmh.jpg)

(http://i42.tinypic.com/2qtfs5e.jpg)


Title: Re: A bit of convection (Mar.12)
Post by: martinastro on March 15, 2009, 01:59:40 pm
Hey Roman, it's good to see you are getting some convection again. Those rising temps during the day must be helping generate those clouds in a decent manner now. I like the last two images because of the clouds above a tree which really gives a sense of scale/size. First image looks very peaceful..until the wet snow came in later.


Title: Re: A bit of convection (Mar.12)
Post by: JohnC on March 15, 2009, 03:03:58 pm
Ah,now Spring is coming at last, the skies get more interesting. Nice to see those Cb's, Roman.


Title: Re: A bit of convection (Mar.12)
Post by: Roman White on March 15, 2009, 03:15:59 pm
Thanks John and Martin

Nice to see those Cb's
I'm not sure those clouds are Cumulonimbus. The #1 image is distinct Cu, the #4 and #5 seem more like Cu to me, but I have doubt on it. Martin, can you judge?

Note: no rain falled from those ones. The rain later that evening was caused exclusively by As/Ns.