Masako Miyagi, a ministry aviation investigator, told Kyodo News Service that cumulonimbus clouds were too widespread for the pilot to avoid the lightning.
42.
Later that day, the depression began to degenerate into an open trough as it was situated underneath cirrus clouds instead of cumulonimbus clouds.
43.
As a result, the air's ascent ceases, nixing any chances that updrafts of air could promote the growth of tall, thundery cumulonimbus clouds.
44.
A thunderstorm is the only production mechanism for hail, the balls of ice that form in the rapid, turbulent motions in a cumulonimbus cloud.
45.
In breaking the altitude record in South Africa she had entered the base of a cumulonimbus cloud at about 6, 000 ft above ground.
46.
Weather radar images showed a severe squall line had formed to the west, and weather stations to the west reported cumulonimbus clouds and thunderstorms.
47.
Cumulonimbus clouds may reach heights as great as 60, 000 feet, so if one is " on cloud nine, " one is high indeed.
48.
These clouds are the result of former cumulonimbus clouds having disintegrated, or an area of only minor instability ahead of the main squall line.
49.
While flying in the vicinity of Quebec City at an altitude of approx . 6, 000 feet, Flight 315 flew into a cumulonimbus cloud.
50.
Florida will be hot and humid but relatively thunderstorm-free as a pool of warm air at 18, 000 feet suppresses the growth of cumulonimbus clouds.
