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- Helm_Wind abstract "The Helm Wind is a named wind in Cumbria, England, a strong north-easterly wind which blows down the south-west slope of the Cross Fell escarpment. It is the only named wind in the British Isles, although many other mountain regions in Britain exhibit the same phenomenon when the weather conditions are favourable. It may take its name from the helmet or cap of cloud which forms above Cross Fell, known as the Helm Bar, since a line of clouds over the fells can predict and accompany a Helm. Research into the helm wind was carried out by Gordon Manley in the 1930s. He interpreted the phenomenon in hydrodynamic terms as a "standing wave" and "rotor", a model confirmed in 1939 by glider flights. The dale at the head of the Eden Valley has its own Helm Wind, which sweeps over Mallerstang Edge, particularly affecting the central part of the dale. This can be similarly fierce and can blow for two days or more, sometimes sounding like an express train. As with the wind at Cross Fell, its arrival is accompanied by the formation of a dense cap of cloud (a "Helm Bar") which, in this case, forms along the high ground on the eastern side of the dale.".
- Helm_Wind thumbnail Helm_bar_mallerstang.JPG?width=300.
- Helm_Wind wikiPageExternalLink 445331434_ee0264ca09_o.jpg.
- Helm_Wind wikiPageExternalLink The-Helm-Wind.htm.
- Helm_Wind wikiPageID "1893752".
- Helm_Wind wikiPageRevisionID "602399787".
- Helm_Wind hasPhotoCollection Helm_Wind.
- Helm_Wind subject Category:Climate_of_England.
- Helm_Wind subject Category:Geography_of_Cumbria.
- Helm_Wind subject Category:Winds.
- Helm_Wind type AtmosphericPhenomenon111425580.
- Helm_Wind type NaturalPhenomenon111408559.
- Helm_Wind type Phenomenon100034213.
- Helm_Wind type PhysicalEntity100001930.
- Helm_Wind type PhysicalPhenomenon111419404.
- Helm_Wind type Process100029677.
- Helm_Wind type Weather111524662.
- Helm_Wind type Wind111525955.
- Helm_Wind type Winds.
- Helm_Wind comment "The Helm Wind is a named wind in Cumbria, England, a strong north-easterly wind which blows down the south-west slope of the Cross Fell escarpment. It is the only named wind in the British Isles, although many other mountain regions in Britain exhibit the same phenomenon when the weather conditions are favourable. It may take its name from the helmet or cap of cloud which forms above Cross Fell, known as the Helm Bar, since a line of clouds over the fells can predict and accompany a Helm.".
- Helm_Wind label "Helm Wind".
- Helm_Wind label "Viento Helm".
- Helm_Wind label "رياح الهيلم".
- Helm_Wind sameAs Viento_Helm.
- Helm_Wind sameAs m.064bc5.
- Helm_Wind sameAs Q3392920.
- Helm_Wind sameAs Q3392920.
- Helm_Wind sameAs Helm_Wind.
- Helm_Wind wasDerivedFrom Helm_Wind?oldid=602399787.
- Helm_Wind depiction Helm_bar_mallerstang.JPG.
- Helm_Wind isPrimaryTopicOf Helm_Wind.