Hope for Gardeners: End of the week spell of rain and hefty showers as Miguel moves through.

6th June 2019 19:24

Hope for Gardeners: End of the week spell of rain and hefty showers as Miguel moves through.

A spell of wet and windy weather is forecast for the end of the working week. It will bring decent rain to Wales and western England but other parts of England still could be disappointed if you are after a real soaking for fields or gardens. A low pressure is forecast to move up from the English Channel early on Friday and bring rain, then hefty showers with blustery winds. The whole lot moves northwards overnight and clears on Saturday with further brisk winds.

Pressure chart of Europe FRiday showing low Miguel

This low pressure is currently near to NW Spain and was named Storm Miguel by AEMet the Spanish Met service. This is not related to our UK named storms program which tends to run in the non-summer months.

The jet stream is diving down through the Bay of Biscay and has enabled the low to rapidly deepen today. It is unusual to have such a deep low pressure at this time of year for that part of Europe and there are warnings for heavy rain, large waves and high winds. NW and western France will also receive stormy weather with high winds, rain and then thunderstorms on Friday. The low moves through its most vicious phase and then as it matures it heads towards the UK. So, although it will be wet and windy, this isn’t like an autumn storm. However, it’s not really much like picture book summer either.

Early rain in Channel early Friday

Parts of southern Britain have been lacking in rain and so will be grateful for any. There will be frontal bands of rain, which will bring more widespread spells of rain and then as the low progresses northwards showers will break out.

Rainfall chart for Friday lunchtime

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The frontal bands reach over Wales and SW England during Friday morning, also central southern England into the Midlands. As the frontal rain moves up over northern England, with a wet spell for the Peak District and Pennines, into the Lakes for Friday afternoon, rain will continue for Wales, especially in the north. Southern Scotland starts to receive light and patchy rain in the afternoon, with heavier pulses in the evening and overnight.

Met Office yellow rainfall warning

The UK Met Office has already issued a yellow weather warning for heavy rain from showers on Friday afternoon and evening. So, there will be a lull after the frontal bands move through, a bit of heating and bright spells but this just sets off the convection.

These showers will be hit and miss as always but there will be hefty downpours with 20-30mm of rain expected, thunderstorms and surface water with spray, so not ideal conditions for the Friday evening rush.

Most of this has concentrated on the rain, but there will be strong winds around coasts and for some ferry services, through the English Channel and the Irish Sea. For the southern areas that have been dry, this is the main chance of rain for this week but often after a dry spell the rain doesn’t soak in. So, it runs off and there are surface water issues. If you do get a thunderstorm or heavier shower, these can give high totals to a small area.

Rain on decking

Summary, a very wet start for the Channel Islands early on Friday, heavy rain spilling into SW Britain for Friday morning rush hour. A band of rain heads northwards during Friday morning through SE England, East Anglia, more of southern Britain but rotating over Wales. Wet and windy for Cornwall. Frontal band continues up through the Wash, the Midlands, into northern England with more rain for N. Wales and Cornwall. Heavy showers break out for inland southern Britain on Friday pm and occluding frontal bands continue to rotate over Wales and Cornwall, nudging northwards through NE England into southern Scotland. Worst of rain could miss most of Northern Ireland and rest of Scotland. There is a fair bit of uncertainty about progress northwards of low centre after this, before it pulls off into North Sea. And of course, some areas will see showers in the south and others miss them altogether.

Will it rain? 

More discussion and chat about Miguel on the Netweather forum

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