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Almost unimaginable amounts of rains fell along a swath of the U.S. more than 200 miles long, rushing from tall peaks and turning tumbling mountain streams into unrecognizable torrents.
Catatumbo means "House of Thunder" in the language of the Bari people. [2] It originates from a mass of storm clouds at an altitude of more than 1 km (0.6 mi), and occurs for 140 to 160 nights a year, nine hours per day, and with lightning flashes from 16 to 40 times per minute. [3]
Acid rain is also a frequent risk produced by lightning. Distilled water has a neutral pH of 7. "Clean" or unpolluted rain has a slightly acidic pH of about 5.2, because carbon dioxide and water in the air react together to form carbonic acid, a weak acid (pH 5.6 in distilled water), but unpolluted rain also contains other chemicals. [58]
Cumulonimbus storm cells can produce torrential rain of a convective nature (often in the form of a rain shaft) and flash flooding, as well as straight-line winds. Most storm cells die after about 20 minutes, when the precipitation causes more downdraft than updraft , causing the energy to dissipate.
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In areas where trees or other vegetation are present, there is little to no rain that can prevent the lightning from causing them to catch fire. Storm winds also fan the fire and firestorm, causing it to spread more quickly. [9] Pyrocumulonimbus are cumuliform clouds that can form over a large fire and that are particularly dry. [10]
This image of the central Pacific, captured on Friday, Apr. 12, 2024, shows the storm with its bright-colored clouds spinning northwest of Hawaii (lower center). Intense rain was occurring in the ...
In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]