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The quasi-biennial oscillation (QBO) is a quasiperiodic oscillation of the equatorial zonal wind between easterlies and westerlies in the tropical stratosphere with a mean period of 28 to 29 months. The alternating wind regimes develop at the top of the lower stratosphere and propagate downwards at about 1 km (0.6 mi) per month until they are ...
Satellite picture of extratropical cyclones south of Iceland. The following is a list of notable European windstorms. Windstorms Before 1800 Event Date Notes Grote Mandrenke (known as St Maury's wind in Ireland) 15–16 January 1362 A southwesterly Atlantic gale swept across England, the Netherlands, northern Germany and southern Denmark, killing over 25,000 and changing the Dutch-German ...
A map showing the force of the mistral one day in November 2008. The wind reached a speed of 80 km/h (50 mph), with average speeds of more than 50 km/h (31 mph) near Marseille. The mistral takes place each time there is an anticyclone, or area of high pressure, in the Bay of Biscay, and an area of low pressure around the Gulf of Genoa.
The strongest tropical cyclone recorded worldwide, as measured by minimum central pressure, was Typhoon Tip, which reached a pressure of 870 hPa (25.69 inHg) on October 12, 1979. [2] Furthermore, on October 23, 2015, Hurricane Patricia attained the strongest 1-minute sustained winds on record at 185 knots (95 m/s; 215 mph; 345 km/h).
As these gradients are the reason that cause west to east winds through the thermal wind relationship, declining speeds are usually found south of the areas with geopotential increases. [83] In 2017, Francis explained her findings to the Scientific American: "A lot more water vapor is being transported northward by big swings in the jet stream.
The fire department received many calls of flooded buildings, while Reykjavík's airport recorded wind gusts as high as 100 km/h (62 mph). [98] October 21–24, 2014 – The extratropical remnants of Hurricane Gonzalo reached Europe with wind gusts of 110 km/h (68 mph) recorded in Wales and the Isle of Wight. Downed trees blocked roads and ...
The area where some of the strongest bora winds occur is the Velebit mountain range in Croatia. This seaside mountain chain, spanning 145 km, represents a huge weather and climatic divide between the sharp continental climate of the interior, characterized by significant day/night temperature differences throughout the year, and the Adriatic ...
A question about this wind was part of the 2003 National Geographic Bee. [12] Shamal, an Arabic word meaning "north", is a male name in Afghanistan and Kurdistan, and means both "wind" and "north". A sandstorm caused by shamal winds tore apart a U.S. Marine encampment on HBO's Generation Kill TV series about the 2003 invasion of Iraq.