Lighting in the Winter? Is That Normal? I Just Don't See It That Much.?

Lighting in the winter? Is that normal? I just don't see it that much.?

Lighting in the Winter? Is That Normal? I Just Don't See It That Much.? 1

From the NSSL (National Severe Storms Labaoratory) FAQ Page www(dot)nssl(dot)noaa(dot)gov/ primer/lightning/ltg_faq(dot)shtml Does lightning happen during the winter? Lightning occurs less frequently in the winter because there is not as much instability and moisture in the atmosphere as there is in the summer. These two ingredients work together to make convective storms that can produce lightning. Without instability and moisture, strong thunderstorms are unlikely. During the winter, the land surface is cooler because there is not as much heating by the sun to warm it up. Without warm surface temperatures, the near-surface air would not rise in the atmosphere very far. Thus, the kinds of deep (8-15 km deep) thunderstorms that develop in the summertime would not develop. Warm air holds more water vapor. And, when water vapor condenses into liquid water cloud drops, latent heat is released which fuels the thunderstorm. So, warm, moist air near the surface (and the proper conditions aloft to give you lots of instability) can result in deep convection, which may produce lightning discharges. Clouds become electrified when strong updrafts (fueled by the instability and moisture) bring supercooled liquid water drops and ice crystals at temperatures less than freezing (0 deg C) together. In this environment, interactions between the ice crystals and supercooled water droplets produce electric charges. The exact mechanisms by which this charging happens remain unknown. The electrical charges build up until they are strong enough to overcome the resistance of the surrounding air. The breakdown of the electric fields produced by these charges is the lightning bolt. What is thundersnow? Although thunderstorms are less common in the winter, sometimes lightning can occur within snowstorms. Called thundersnow, relatively strong instability and abundant moisture may be found above the surface, such as above a warm front, rather than at the surface where it may be below freezing. Thundersnow is sometimes observed downstream of the Great Salt Lake and the Great Lakes during lake-effect snowstorms, too.

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question about cold, warm,occluded, and stationary fronts?

If you are taking an exam, it is best to know what is written in the textbook (if you have one) or lecture notes (if you do not have them, maybe you can get them from someone else). Every teacher has their own way of explaining this. Yet there are fundamental things: Fronts are boundaries between cold & warm air masses. The term boundary in this sense means a zone of large temperature gradient - i.e., where the temperature changes a large amount over a rather small distance. "Large" & "small" in this case may mean 12 °F over a distance of 25 miles for example. Cold fronts are the leading edge of a colder air mass displacing a warmer one - typically moving eastward and equatorward. Sometimes it is more so a drier air mass than a colder one - but in each case it is the more *dense* air advancing. Showers or thundershowers often occur with these. Warm fronts are the leading edge of a warmer air mass replacing a colder one - typically moving poleward and a little eastward. Warm air is less dense than cooler air, so what really happens is the upper air flow is such that the colder air to a large exent recedes. This also can be more so a moist air mass replacing a dry one. Steady rain and fog often occur ahead of these. Stationary fronts do not move much - can linger over an area for days - but are still a boundary of sorts between a cool & dry air mass and a warm & moist one. We were on the cool side and it rained almost every day -not far enough on the cool side to be in the much drier air :( There are many more details which can be discussed, but do not want to bog you down or post too long here

Lighting in the Winter? Is That Normal? I Just Don't See It That Much.? 2

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Heater blows Luke warm air, sometimes hot?

Could be a clogged heater core, but it could also be an air vent control door that's not opening properly OR it could be a dirty cabin air filter. When you run the heater, is there hot air coming from your defrosters? Does your car HAVE a cabin air filter? I would check those before tearing into your heating system

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