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Windthrow is common in all forested parts of the world that experience storms or high wind speeds. The risk of windthrow to a tree is related to the tree's size (height and diameter), the 'sail area' presented by its crown, the anchorage provided by its roots, its exposure to the wind, and the local wind climate.
The Santa Anas are katabatic winds (Greek for "flowing downhill") arising in higher altitudes and blowing down towards sea level. [7] The National Weather Service defines Santa Ana winds as "a weather condition [in southern California] in which strong, hot, dust-bearing winds descend to the Pacific Coast around Los Angeles from inland desert regions".
Wind gust speeds during Storm Abigail in November 2015 Sound of wind blowing in a pine forest at around 25 m/sec, with gust alterations. A wind gust or just gust is a brief, sudden increase in the wind speed. It usually lasts for less than 20 seconds, briefer than a squall, which lasts minutes. A gust is followed by a lull (or slackening) in ...
When wind gusts harmonize with the frequency of the swaying bridge, the bridge may fail as occurred with the Tacoma Narrows Bridge in 1940. [ 17 ] Hurricane-force winds, caused by individual thunderstorms, thunderstorm complexes, derechos, tornadoes, extratropical cyclones, or tropical cyclones can destroy mobile homes and structurally damage ...
That morning, an organized cluster of thunderstorms moved into Iowa after having produced severe wind gusts in central and eastern Nebraska. This line of storms continued across central and eastern Iowa just north of a warm front , presenting a continued threat for damaging wind gusts. [ 36 ]
A wind storm must meet the following criteria: [4] Wind damage swath extending for more than 400 miles (640 km) Wind gusts of at least 58 miles per hour (26 m/s; 50 kn) along most of its length; Several, well-separated 75 miles per hour (34 m/s; 65 kn) or greater gusts; Prior to January 11, 2022, the definition for a derecho was: [12]
The wind advisory is in effect from 7 a.m. to 9 p.m. Saturday for Franklin and Fulton counties in Pennsylvania, where gusts also could reach about 50 mph, said meteorologist Bill Gartner with the ...
For the following areas... Tidal Potomac from Cobb Island MD to Smith Point VA... At 1137 AM EDT, a gust front was located near Quantico Marine Base, moving southeast at 25 knots. Numerous wind gusts of 35 to 45 knots have been observed with this line. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar indicated.