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A wake low or a mesoscale low-pressure area forms behind the rain shield (a high pressure system under the rain canopy) of a mature squall line and is sometimes associated with a heat burst. [40] Squall lines often cause severe straight-line wind damage, and most non-tornadic wind damage is caused from squall lines. [41]
In many areas in North Carolina, like Chimney Rock and Asheville, residents saw heavy rain. The highest reported rainfall was 29.5 inches in Busick Raws, Yancey County, North Carolina’s Gov. Roy ...
Precipitation is measured using a rain gauge, and more recently remote sensing techniques such as a weather radar. When classified according to the rate of precipitation, rain can be divided into categories. Light rain describes rainfall which falls at a rate of between a trace and 2.5 millimetres (0.098 in) per hour. Moderate rain describes ...
Satellite images of one of the first extratropical cyclones responsible for the flooding (unofficially named "Winter Storm Iras" by The Weather Channel).. The high-amplitude ridge off the West Coast that characterized the 2011–17 California drought, dubbed the "Ridiculously Resilient Ridge", was replaced by a persistent presence of anomalous troughs affected California.
FILE - Heavy holiday traffic on I-495 with snow and rain covering most of the east coast on November 26, 2014 in Landover, MD. (Getty Images)
A significant winter storm is traveling coast to coast, producing heavy snow, ice, and severe thunderstorms. More than 60 million people are expected to feel the impacts through Monday evening.
Between May 27 to June 7, numerous days of heavy rain led to extreme flooding across the Southwestern United States, which would later be classified as a “historic” flooding event by the National Weather Service. [163] [164] In the Amarillo metropolitan area, over 15 inches (380 mm) of rain fell. [163]
Heavy rain was reported in the Austrian states of Vorarlberg and Tyrol and the area of Salzburg, and to the mountains of Upper Austria and Lower Austria and Upper Styria in a short time. On 30 May to 1 June, 150 to 200 mm of rain (5.9 to 7.9 in of rain) fell, in places reaching around 250 mm (9.8 in), which in just a few days was the equivalent ...