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. This brings warmer, drier air down into valleys. Radiative warming: Clear skies in the lee of mountains allow more sunlight to reach the surface, further warming the air. Together, these processes explain the dramatic and sometimes dangerous changes in weather associated with the foehn effect. Keep up

WAL 2009 03302 VALLEY 10 53.25262 -4.53639 WAL 1930 03305 CAPEL CURIG NO3 216 53.09416 -3.94138 WAL 1993 03313 RHYL NO2 77 53.2593 -3.50882 WAL 1986 03316 CROSBY 9 53.49724 -3.05764 ENG 1983 03318 BLACKPOOL, SQUIRESGATE 10 53.77481 -3.03782 ENG 1942 03321 HAWARDEN AIRPORT 11 53.17543 -2.98633 WAL 1944

colour. In both images low cloud and fog can be seen across north-east Italy, parts of the Swiss plateau to the north of Alps, and within some of the valleys within the Alps themselves. Credits:  Image: © Crown copyright, Met Office, Data: NOAA/NASA October 2020 - Storm Alex brings extreme weather

) on the 25th. Weather impacts On the 4th, there were road and rail closures across the Central Belt and evacuations at Garnock Valley and Tillicoultry. A landslip closed the rail line near Helensburgh and another landslip blocked the A83 at the Rest and be Thankful. Thunderstorms caused some impacts

and M62 were all blocked for a time. On the 17th, around 100 properties in Pentre, Rhonda Valley were flooded during a torrential thunderstorm. In Nottinghamshire and Leicestershire, there was a roof collapse at a Specsavers store and flooding at the Royal Mail depot in Beeston. There was property

and Farnborough. A family was rescued when flood water entered their home in Hastings, and there were reports of flooding to a number of properties in the Thames Valley area. In the south-west there were reports of flooding in Wimborne and Colehill. On the 25th thunderstorms developed across Powys

) and in four colors (green, yellow, orange, and red) the levels of weather-related risks (Vigilance Maroc Meteo, n.d.). • Ourika valley and flood warning system in the High Atlas Mountains. Ourika watershed is a small sub-basin (503 km2) in the high Atlas Mountains, part of Tensift catchment, South

the geographic range and Page 4 of 125 2022, Met Office incidence of vector-borne diseases such as malaria and Rift Valley Fever, especially along the margins of current distribution. Rising temperatures and temperature extremes will also lead to heat stress, particularly in cities, though in rural lowland

of the Pennines and Lake District, the Southern Uplands and much of central Scotland (although partially concealed by cloud). The prominent snow-free valley in the centre of the image is the Vale of Eden, with Cross Fell, the highest point of the Pennines, lying to the east. Ireland’s Wicklow Mountains

, and valleys (frost hollows) which can exaggerate overnight cold.   Similarly, hilltops can record winds that don’t represent the wider area. That’s why the Met Office is meticulous about site selection, ensuring each station’s data reflects the broader region or its specific use case, not just its