The causes of encephalopathy are both numerous and varied. Some examples of causes of encephalopathy include: infectious (bacteria, viruses, parasites, or prions), anoxic (lack of oxygen to the brain, including traumatic causes), alcoholic (alcohol toxicity), hepatic (for example, liver failure or liver cancer), uremic (renal or kidney failure),
It is often seen 12 to 18 hours in advance of an unsettled weather system. Cirrocumulus clouds look like many small tufts of cotton, rippled sand or even the scales of a fish (hence the term âmackerel skyâ). Middle clouds: Altostratus, altocumulus and nimbostratus clouds are typically found between 6,000 and 20,000 feet above the ground. Altostratus resembles a smooth gray sheet across the sky. Sometimes the sun shines through the layer as a diffuse ball as if you were looking at it through a pane of frosted glass.
Lenticular clouds, technically known as altocumulus standing lenticularis, are stationary lens-shaped clouds that form at high altitudes, normally aligned at right-angles to the wind direction. Where stable moist air flows over a mountain or a range of mountains, a series of large-scale standing waves may form on the downwind side. Lenticular clouds sometimes form at the crests of these waves. Under certain conditions, long strings of lenticular clouds can form, creating a formation known as a wave cloud. Power pilots tend to avoid flying near lenticular clouds because of the turbulence of the rotor systems that accompany them, but sailplane pilots actively seek them out.