A squall forming in fair weather, characteristic of the ocean off the coast of South Africa. It is named for the peculiar appearance of the small isolated cloud marking the top of the invisible vortex of the storm.
A type of foehn wind. Refers to the warm downslope wind in the Rocky Mountains that may occur after an intense cold spell when the temperature could rise by 20 to 40 degrees Fahrenheit in a matter of minutes. Also known as the Snow Eater.
The “Lash of St. Francis.” Name applied locally to southerly hurricane winds along the west coast of Mexico. It is associated with tropical cyclones in the southeastern North Pacific Ocean. These storms may occur from May to November, but ordinarily affect the coastal areas most severely near or after the Feast of St. Francis, October 4.
A severe tropical storm (i.e., winds >64 knots) in the Indian Ocean and Bay of Bengal. See also Hurricane and Typhoon. The term is also applied to closed circulations in the mid latitudes and also popularly to small scale circulations such as tornadoes.
Northern California version of Santa Ana winds. These winds occur below canyons in the East Bay hills (Diablo range) and in extreme cases can exceed 60 mph. They develop due to high pressure over Nevada and lower pressure along the central California coast.
A warm dry wind on the lee side of a mountain range, whose temperature is increased as the wind descends down the slope. It is created when air flows downhill from a high elevation, raising the temperature by adiabatic compression. Examples include the Chinook wind and the Santa Ana wind. Classified as a katabatic wind.
A strong wind and sandstorm (or duststorm) in the northern and central Sudan, especially around Khartum, where the average number is about 24 per year. The name come from the Arabic word, “habb”, meaning wind.
A severe tropical storm (i.e., winds >64 knots) in the Atlantic, Caribbean, Gulf of Mexico and Eastern Pacific. The word is believed to originate from the Caribbean Indian storm god “Huracan”. See also Typhoon and Cyclone.
A northeast wind which occurs in winter on the Iranian coast of the Persian Gulf, especially near the entrance to the gulf, and also on the Makran coast. It is probably associated with an outflow from the central Asiatic anticyclone which extends over the high land of Iran. It is similar in character but less severe than the BORA.
This is a very warm wind which can blow for days on end in the province of Canterbury New Zealand. The effect is especially felt in the city of Christchurch. The wind comes in from the Tasman Sea, drys as it rises over the Southern Alps, heats as it decends, crosses the Canterbury Plains, then blows through Christchurch.
A violent northeasterly fall wind on the Pacific coast of Nicaragua and Guatemala. It consists of the cold air mass of a norte which has overridden the mountains of Central America. See also TEHUANTEPECER.
A strong and often violent wind occurring in many of the fjords of British Columbia. Squamishes occur in those fjords oriented in a northeast-southwest or east-west direction where cold polar air can be funneled westward. They are notable in Jervis, Toba, and Bute inlets and in Dean Channel and Portland Canal. Squamishes lose their strength when free of the confining fjords and are not noticeable 15 to 20 miles offshore.
Warm downslope winds that periodically occur along a short segment of the Southern California coast in the vicinity of Santa Barbara. The name refers to their typical onset (on the populated coastal plain) in the late afternoon or early evening, though they can occur at any time of the day. In extreme cases, wind speeds can be of gale force or higher, and temperatures over the coastal plain and even at the coast itself can rise significantly above 37.8 degrees C (100 degrees F).
A strong, gusty, east-northeast wind, occurring in the vicinity of Juneau, Alaska, between October and March. At the mouth of the Taku River, after which it is named, it sometimes attains hurricane force.
A violent squally wind from north or north-northeast in the Gulf of Tehuantepec (south of southern Mexico) in winter. It originates in the Gulf of Mexico as a norther which crosses the isthmus and blows through the gap between the Mexican and Guatamalan mountains. It may be felt up to 100 miles out to sea. See also PAPAGAYO.
A cold fall wind blowing from the northwest down the Vardar valley in Greece to the Gulf of Salonica. It occurs when atmospheric pressure over eastern Europe is higher than over the Aegean Sea, as is often the case in winter. Also called VARDARAC.