Sunday has been pleasant for many in England, instead clouds and rainfall have dominated in Scotland. In Figure1 we can see the occluded front moving eastward towards the Northern sea, with still clouds on Scotland, and brighter skies behind the front (cumulus on England and Wales). To look at the cloud system west of Ireland which will bring unsettled conditions tomorrow.
A low pressure system is approaching the UK during the night, though it will remain mostly on the Atlantic. However, it will bring unsettled conditions especially on Wales Scotland and Northern Ireland (Figure2).
Figure1. This afternoon situation (Sat24).
Figure2. Synoptic chart for tomorrow midday (Met Office).
During the night and morning showers are expected on the Irish Channel, Northern Ireland, Western Scotland and Wales. During the afternoon still showers are expected in these areas, but moving eastward towards southern England (mainly Cornwall and south west), Northern England. In the evening still showers in these areas, instead settled conditions on the east.
Due to the mild nature of the air (Returning polar maritime) temperatures won’t be cold, with minimum values between (5-8°C) in Scotland and Northern Ireland, (7-12°C) in England and Wales. The maximum will be (7-11 °C) in Scotland and Northern Ireland, (10-14°C) in Wales and England, with highest values observed in the southeast and east-midlands due to brighter conditions.
The winds will be south-westerly most of the day, light. Moderate on the Irish Channel from the afternoon and English Channel from early the evening.
A low pressure system is moving towards Ireland and Scotland and will cause strong winds and rainfall during the day, especially from late morning (Fig1).
Fig1. Synoptic chart valid for 9/11 midday (Met Office).
During the night some showers are expected on the Irish Channel, Wales and Western Scotland, instead bright conditions on the south-east. During the morning some showers still possible in these areas. However, from late afternoon moderate/intense rainfall will move eastward from the Atlantic with rainfall on Northern Ireland, Wales, Scotland, Cornwall and by evening also England (with the south-east hit especially on late evening). However, the most intense precipitation will be on the west and south (Wales, northern Ingland ,western Scotland, Cornwall and south-east), instead lighter on the central-northern east coast.
The minimum temperatures will be steady in Scotland (5-8°C), and increase in England (5-13°C, highest values in Cornwall). Also the maximum temperatures won’t change, with values (6-10 °C)in Scotland and (8-13°C) in England.
The winds will be southerly everywhere until afternoon, when they will turn westerly-south westerly. The strongest winds (moderate/strong) will be on the Irish Channel and English Channel (Cornwall) from late morning to late afternoon, instead in the evening will be moderate on the east and Northern Scotland.
Another low pressure system is moving close to the UK, though it will move towards Iceland bringing tropical maritime air towards the UK. Possible showers are expected during the day in Northern Ireland, Irish Channel and Western Scotland due to an occluded front stationary between Ireland and Scotland, and some showers could be possibe during the night of the east of England due to the presence of a trough.
During the night some showers are possible on Eastern England, and moderate rainfall is expected on Wales, Irish Channel, south-western England. During the morning rainfall is expected moving on Western Scotland, Northern England and Northern Ireland. Instead during the afternoon and evening possible showers still expected on Western Scotland instead brighter skies are expected on the east (afternoon) and in Cornwall (evening).
The temperatures, due to overcast condition and southerly winds will significantly increase everywhere (8-14 °C), and the maximum will be similar (8-15°C). However, from the evening cooler air moving from the Atlantic and clearer skies would cause a decrease in temperature in Northern Ireland, Wales and Western Scotland (5-10 °C) , instead still milder conditions on the east (10-13°C).
The winds will be southerly most of the day, turning westerly/south westerly during the afternoon. They will be moderate on the English Channel (most of the day), Irish Channel (morning) and Eastern England/Scotland (day).
Fig1. Occluded front on Irish Channel and low-pressure on the Atlantic. MetOffice
The tail of a low pressure system positioned between Scotland and Iceland will cross the UK from early night bringing some showers and milder minimum temperatures, though a high pressure will approach from the Atlantic from late evening.
During the night moderate rain is expected in northern Wales, northern England and eastern Scotland, and some showers expected also in the south east. The showers will move eastward during the day, with brighter conditions in central England. By evening, bright conditions mostly everywhere, though some showers possible in Western Scotland.
Regaridng the snow, some is expected in the night on the highlands above 400-500 m.
The minimum temperatures will increase, with positive values everywhere, with (5-13 °C in England, highest values in the south-east), (5-9 °C) in Wales, and (-1°,6 °C) in Scotland (low values only on the highlands). The maximum will be quite steady, mostly (8-14°C) in central-southern England and Wales, and (5-9 °C) in northern England and Scotland.
The winds from southerly during the night will be north-westerly during the day, though light.
A low pressure system is moving north of the UK towards Iceland, bringing unsettled conditions (though with no intense rainfall) especially in Scotland and Northern England.
During the the night some rainfall is expected on Western Scotland and northern England (mainly Pennines), with moderate rain on the mountanous areas, bright conditions elsewhere. During the afternoon, showers are expected in Wales, Scotland and northern England, with bright conditions on the east, and from the evening some showers are expected also in the south east.
Some snow it’s expected still on the highlands during Wednesday evening.
The minimum temperatures will decrease especially in England due to bright conditions (0-5 °C mostly everywhere), with negative values (-1,-3 °C) in Wales, highlands and northern England. During the day, milder temperatures are expected especially on southern England (10-13 °C) and Wales (8-13°C), instead still cold in northern England and Scotland (4-10 °C).
Finally, the winds will be southerly and light mostly everywhere, with moderate winds in the evening in eastern England.
Synoptic chart valid for 31/10/2018. Met Office.
A cold front crosses the country during the night bringing cooler temperatures and more settled conditions especially during the late part of the day, with a high pressure forming north of the Alps.
During the night still moderate/intense rainfall on the prealps (from the west to the east) and Toscana, instead lighter rain on the Po valley, Liguria and Tyrrenian coast from Lazio to Campania. Some rain also in Sardinia and Salento (here moderate/intense). During the morning and afternoon rainfall is still expected in the North-east (especially Dolomites and Carnia) and Tuscany, though less intense. Some rain expected in Toscana, Lazio and Umbria.
By evening, brighter conditions mostly everywhere, though with some rainfall approaching Piemonte and Val D’Aosta.
The snow limit, due to the colder air, will decrease rapidly in the Alps (1200 m on the west and 1500 on the east, though probably lower in the narrowest valleys and in case of intense precipitation). Some snow expected also in northern Appennine above 1500-1600 m.
The minimum temperatures will decrease, with values between (6-16 °C )in the north, (highest values are in Liguria), (8-16 °C) in Central Italy and (12-20°C) in the South, with highest values in Puglia. Also the maximum values will decrease with (12-18 °C) in the north, (14-20 °C ) in Central Italy (highest values on the Adriatic) and (18-22 °C) in the south (highest values in Puglia). By the evening the minimum temperatures will be reached also thank to brighter skies: (6-13 °C) in the North, (6-15 °C) in Central Italy and (12-18 °C) in the south.
During the night the winds will still strong in the Adriatic and Tyrrenian Sea, though decreasing during the morning (turning westerly in the Tyrrenian sea, instead still south easterly on the Adriatic).
The low pressure system positioned in the central Mediterranean sea is moving northward towards the Baltic sea. However, the UK won’t be interested directly, especially the western part, thus settled weather is expected.
However, the east of England and Scotland will see showers during the day as long as an increase in the wind speed and cloudy conditions are expected overnight and early morning especially in England. In the rest of the country settled conditions with bright sky especially in the west (Wales, Cornwall), though from the evening some showers are possible in Northern Ireland and Western Scotland due to an occluded front moving eastward.
Due to cloudier sky, minimum temperatures will see an increase, with values mostly between (2-8 °C, highest values on the east coast) and only in Wales, Scotland it could be reach (-1,-2 °C). During the day instead, maximum temperatures will be still below 10 °C mostly everywhere, with 3-5 °C expected on the Highlands.
The winds will be mostly northerly and light, but on the east of England and Scotland with moderate winds especially during early afternoon.