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to only a small committed increase in warming over the 21 st century (solid blue curve), but with a range that could be positive or negative. If aerosol emissions are also cut at the same time then there is warming over the 21 st century of around 0.5ºC (green curve and range), as the net cooling

-forecasts/mountain © Crown Copyright 2026. All Rights Reserved. Mountain Weather Forecast Forecast for Tuesday 10 Mar 2026 Height (m) Wind Speed mean/gusts (mph) Wind Direction (blowing from) 06:00 09:00 12:00 15:00 18:00 21:00 00:00 600 25/34 S 23/32 S 29/41 S 33/46 S 37/51 S 39/54 SW 39/55 SW 300

. The first named storm of the 2024/25 season, Storm Ashley, arrived on the 20 th -21 st and brought heavy rain and wind across northwestern parts of the UK. High pressure closed out October, with cloudy but warm weather. November saw close to average temperatures, the month began dull, dry and mild

. Temperatures will vary across the country, with warm conditions in the southeast, possibly up to about 21-22°C in some areas. These temperatures fall just slightly short of some of the highest recorded throughout the event’s history and well ahead of last year's maximum temperature at St James's

for January. This beats the previous UK record of 13.1C set at Magilligan (Londonderry) in 2016 and the previous English record of 13.0C set at London St James Park in 2008. There is also a new Welsh January daily minimum temperature record with Trawsgoed (Dyfed) recording 12.8C beating the previous record

for Scotland. England’s coldest September night was -5.6°C, recorded at both Santon Downham (Norfolk) and Grendon Underwood (Buckinghamshire) on 30 September 1969. Wales saw -5.5°C at St Harmon (Powys) on 19 September 1986, and Northern Ireland’s record low is -3.7°C at Katesbridge (County Down) on 27

remarks 5 Appendices 6 This report was prepared in good faith. Neither the Met Office, not its employees, contractors or subcontractors, make any warranty, express or implied, or assume any legal liability or responsibility for its accuracy, completeness, or any party ’ s use of its contents

Compression Applied Lossy Compression Applied •3D rendering of ‘lemniscate’ (tear drop) onto images from STEREO and LASCO •Assume circular symmetry 14 Pretty Much Any Location Works CME/ICME Arrival Time Prediction Error YEAR AVERAGE RMS ST-Sun- `Earth’ Angle 2011-2014 6:39:22 8:28:38 2011 7:06:17 8:24:47 88

metrics across the broad spatial region of interest are preferred to inform comparative analysis; • Temporal periods of the datasets, to establish the suitability for use as a baseline to use as indicators for future time periods (e.g. mid-21 st century) i.e. when was the data collected, how

SW 41/50 SW 45/55 S 48/57 S 54/67 S 45/57 SW 900 19/25 SW 28/36 SW 29/40 SW 27/36 SW 27/35 SW 28/38 S 32/42 S 36/49 S 30/42 SW 600 9/20 SW 18/34 SW 19/37 SW 18/34 SW 17/31 SW 18/34 SW 18/35 S 22/43 S 18/35 SW 300 3/11 W 6/20 SW 7/20 SW 6/17 SW 9/19 SW 8/20 S 9/23 S 10/27 S 11/28 SW Glen 3/11 SW 5