why the storms usualy occur in the evening?
352896
The early afternoon and evening are the warmest times of the day, and that warmth fuels the convection that powers storms.  Conversely, late at night and early morning are the coolest--and hence the most stable--times of the day.
127084
I suspect that what you mean is that the relative humidity is sometimes greater at night than it is during the daytime. This is because the air is warmer usually during the day, so it can hold more moisture.
937495
We do have them in the day, just they not show up as well. Many seem more numerous before dawn, because they best seen then or the angle they hit the atmosphere at that time. All I know.
801936
- The sun rises in the east and sets in the west.\n\n- If there is broken cloud in the morning we may look to the west and see red light reflecting back from the cloud, i.e. 'red sky in the morning'. As the clouds are coming towards us there must be a chance of rain, at least an increased chance compared with the cloudless period we had just enjoyed.\n\n- Likewise for 'red sky at night'. If we see red clouds in the evening they will be in the east and have already passed us by, giving a good chance of clear skies and fine weather ahead.
526215
Accumulation of ice, either through rare precipitation, or through the falling of frozen, humid air.  The reason why this happens at the poles more than anywhere else is because they have the most dramatic angle for the sun's rays to penetrate, and seasonally suffer 24 hour nights (no sun at all).  You'll notice that the equator tends to be the hottest and most humid (meaning water is so hot it's lifted into the air, causing huge cloud formations, which turn into rain storms and hurricanes).
982259
They are very rare, but I think as long as there is cold air clashing with warmer air (which can happen even in the winter), you can create conditions favorable to tornado developement. We had a severe snow storm in which we had thunder and lightning, the sky even turned slightly yellow....scary.
739951
Atmospheric bressure, the shorter the distance between the isobars indicates that a storm is brewing
497622
It doesn't just happen all of a sudden, as OBIWAUGH pointed out, the movement of air caused by the storm causes the clouds to acquire a polarized electrical charge that by nature has to release its energy.\nThat energy is the lightning bolt reaching out to an oppositely charged object to balance the energy.
589126
the flash of electricity is lightning... the sound that follow is thunder... storm usually occurs when lightning, thunder, strong wind and rain happen at the same time...
115453
Everyone has those days.  Some more than others.  Weather has a lot to do w/ it.  If you notice, you are peppier on sunny days vs gloomy days.  If its rainy and yucky out, chances are, its a struggle to get out of bed.
825004
Probably just the weather changing quickly ? We had a thunderstorm a few weeks ago, except it was snowing with it. Really warm before it and really cold afterwards... I'm sure it's nothing to alarm yourself over.
231706
i never sleep better than when its raining outside, my husband is the same way.  we watch every storm come in and go out.  once we put on snomobile helmets so we could stand outside in hail.  silly, huh?
254379
There are probably a few explanations, However a whirlwind probably not a tornado possibly. could you add some detail where are you located?\n\nI beleive there was some tornado activity in your area today.
163797
In the midwest, the mountains to the west and the Gulf of Mexico to the south produce the layers of cool, dry air and warm, moist air, these coditions are favorable for tornado formation. These conditions happen much less often toward the coasts. Tornados aren't uncommon on the east coast though. In fact, areas hit hard with hurricanes(Gulf Coast) have tornado outbreaks too because the hurricanes produce apt conditions for formation.
447253
it happens more frequently then you think. lightening often strikes the same place
828997
I believe you are referring to the changes in the seasons.  Because the rotational axis of the earth is tilted a bit more than 23 degrees away from it's orbital plane the earth gets a bit more in the way of the sun (so to speak) as winter approaches so sunrise is a bit later each day, and sunset a bit earlier.  After the winter solstice less and less of the earth is in the way, so sunrise starts a bit earlier each day, and sunset a bit later, until the summer solstice.  Interestingly dusk is longer in the winter because the sun rises and sets at more of an angle to the horizon.  For the same reason, in the tropics dusk is shorter because the sun rises and sets more nearly vertical.  In the more northern part of the northern hemisphere and the more southern part of the southern hemisphere dusk may last all night long in the summer (culminating in the "midnight sun" north of the arctic or south of the antarctic circles).  In addition, due to the refraction of the atmosphere we see the sun earlier than actual sunrise and later than actual sunset (the atmosphere acts as sort of a lens).
675075
Some people are effected by the ammount of sunshine, so when a thunderstorm comes along it can make them sad.\n\nAlso darkness (in out culture) represents sad things. It sometimes represents death and other sad things, so when it's dark out it can make some people really sad.