Why do we get bigger storms at night?

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Why do we get bigger storms at night?

Postby Beef_Taco » Sat Aug 05, 2006 12:21 pm

Hey guys, nice new forum you have up here. Nice and easy to read and keep track of things.

Just a quick question to some of you smarter weather watchers. Why is it (or so it seems) that we get bigger storms at night and that's when the majority of rain falls. We still get thunderstorms during the day, but they don't seem anything like those at night. Any explanation?

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Postby Tim S » Sat Aug 05, 2006 1:09 pm

Cheers Beef Taco, welcome to the forum! :)

Thats a good question, I have always wondered the same. I think it has something to do with the fact that the land heating slowly builds up during the day until it peaks at late arvo/ early evening, giving you a greater likelyhood of early evening storms, especially in Summer. I also always wondered why the majority of fronts arrive at night and havent been able to find an explanation other than during winter there are around 14hrs of night and 10 hrs of day so its more likely the front will arrive in nighttime hours. though I am sure there is a scientific explanation! :)

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Postby Beef_Taco » Sat Aug 05, 2006 5:44 pm

Cheers bud.

I figured it just had something to do with the sun. Not sure what about, but thought maybe the sun had an impact on the clouds and things.

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Postby Turbo » Sun Aug 06, 2006 12:17 am

Hi Guys,

In the last few weeks, the fronts have all arrived during the day, so maybe it is just the perception that it rains more at night?

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Postby Tim S » Sun Aug 06, 2006 9:04 am

Yeah that could also be true Turbo, though it does seem the better front arrive during the night, early morning seems to be the peak time. But as you said it could just be a matter of only remembering ones during the night.

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Postby Beef_Taco » Sun Aug 06, 2006 9:55 am

Yeah i know what you mean. But when you think big storms, the vast majority are at night.

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Postby squid » Sun Aug 06, 2006 9:57 am

welcome beef :D

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Postby silvercloud » Sun Aug 06, 2006 10:03 am

Hi and welcome.

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Postby Beef_Taco » Sun Aug 06, 2006 10:44 am

Cheers guys!

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Weather Q & A

Postby Tim S » Mon Aug 07, 2006 2:26 pm

Renaming this thread Weather Q & A :)

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Postby mikeh » Tue Aug 08, 2006 7:39 pm

Good question, I noticed that many fronts seem to hang until nightfall then come through.

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Postby squid » Wed Aug 09, 2006 4:14 pm

maby the fronts are camera shy :wink: :lol:

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Postby Beef_Taco » Wed Aug 09, 2006 7:58 pm

I noticed the other day the front was windy as all hell until just before sunrise, then it was like it had never passed? :/

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Postby mikeh » Wed Aug 09, 2006 10:03 pm

I was wondering do highs and lows move at different rates during the evening versus daytime?

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Postby Tim S » Thu Aug 10, 2006 7:39 am

Beef_Taco wrote:I noticed the other day the front was windy as all hell until just before sunrise, then it was like it had never passed? :/


This was because there was a high pressure system pushing its way in after this front and cut-off low. So by sunrise this high was centred near Perth and consequently we didnt have much of a pressure gradient over us and this means that the wind dropped out rather quickly. :)

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Postby squid » Thu Aug 10, 2006 10:05 am

i dont think that the time of day has anythign to do with th emovement of highs and lows i beleive there are steered by upper level winds but a good time for lows to bomb seems to be overnight for some reason.

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Postby SilverRain » Wed Jun 06, 2007 2:21 pm

Why was the Fremantle weather station shut down in 1992? The Bureau says it commenced records in 1852, so why end a station recording data for such a long period, and when I think it would be important to keep records for Fremantle, as a city in this state?

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Postby hailstorm » Wed Jun 06, 2007 2:54 pm

Yeah I also wondered why they closed Fremantle down. As you say the records have, rather, were kept for nearly 150 years so it does seem odd that they gave Freo the chop. If funding shortages are the reason maybe BOM should close Swanbourne and re-open Freo, or maybe just setup an AWS down in Freo.

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Postby hotandstormy2006 » Wed Jun 13, 2007 3:44 am

what causes supercell thunderstorms

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Postby bandit » Sat May 31, 2008 4:44 pm

basically the only difference between a SC and a normal storm is that the SC is a rotating thunderstorm.

the rotating updraught is the difference. the rotation is casued by wind shear. that is the difference in the wind speed at ground level & at or around low cloud level...

the air starts rolling then gets tilted upright by an updraught

it's a simple explanation but i hope that helps.......

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