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The heavy snowfall tends to muffle the sound of the thunder so that it sounds more like a low rumble than the loud, sharp bang that is heard during regular thunderstorms. [ 2 ] Thundersnow can occur during a normal snowstorm that sustains strong vertical mixing which allows for favorable conditions for lightning and thunder to occur.
The squall line contains heavy precipitation, hail, frequent lightning, strong straight line winds, and possibly tornadoes and waterspouts. [28] Severe weather in the form of strong straight-line winds can be expected in areas where the squall line itself is in the shape of a bow echo , within the portion of the line that bows out the most. [ 29 ]
Heavy rain warning was first introduced in April 1967 together with thunderstorm warning by the Royal Observatory of Hong Kong as a result of the three rainstorms in 1966 which claimed 86 lives. The heavy rain warning was issued when an hourly rainfall of more than 50 mm (2 inches before metrication ) was expected in six hours.
Scattered severe thunderstorms are expected late Monday afternoon into the evening hours. This threat will be greatest north of I-20, but isolated severe storms could develop anywhere in North Texas.
Heavy rainstorms that swept across southern China over the weekend killed at least four people in riverside cities, while a search was underway for 10 others missing, state media said Monday. The ...
The lightning itself cannot be seen by the spectator, so it appears as only a flash, or a sheet of light. The lightning may be too far away to discern individual flashes. Smooth channel lightning is an informal term referring to a type of cloud-to-ground lightning strike that has no visible branching and appears like a line with smooth curves ...
When there's thunder and lightning outside, childhood instinct says to hide under the covers. Check out these crazy lightning snapshots: Unfortunately, a woman in Michigan found out this week that ...
The most noticeable aspect of lightning and thunder is that the lightning is seen before the thunder is heard. This is a consequence of the speed of light being much greater than the speed of sound. The speed of sound in dry air is approximately 343 m/s (1,130 ft/s) or 1,236 km/h (768 mph) at 20 °C (68 °F; 293 K). [19]