Met Office Issues Amber Weather Warning – Snow

Issued at:  09:57 on Wednesday 22 February 2017

Valid from:  02:00 on Thursday 23 February 2017

Valid to:  18:00 on Thursday 23 February 2017

Heavy snow is expected on Thursday. Accumulations of 10 to 15 cm are likely quite widely with 20 to 30 cm falling on hills above 300 metres. This will lead to disruption to transport and perhaps power supplies.

Chief Forecaster’s Assessment

As storm Doris moves eastwards across central parts of the UK on Thursday a spell of heavy snow is expected on its northern flank. There is some uncertainty over the track of Doris and therefore over the extent of snowfall, but confidence is now higher for disruptive snow to affect the amber area.

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Met Office Issues Yellow Weather Warning – Rain

Issued at:  10:35 on Wednesday 22 February 2017

Valid from:  21:00 on Wednesday 22 February 2017

Valid to:  14:00 on Thursday 23 February 2017

A spell of heavy rain will affect Northern Ireland, southern Scotland and parts of northern England during Wednesday night and Thursday morning, falling as snow over some of the higher ground.

This has the potential to lead to some travel disruption and localised flooding.

The warning has been updated to extend the area into parts of southern Scotland and northern England.

Chief Forecaster’s Assessment

Rainfall totals of 20-40 mm are expected across the area.

Met Office Issues Yellow Weather Warning – Wind

Issued at: 10:09 on Wednesday 22 February 2017

Valid from: 05:00 on Thursday 23 February 2017

Valid to: 20:00 on Thursday 23 February 2017

Some very strong winds are expected during Thursday in association with Storm Doris.

Gusts of 50-60 mph are expected widely across the warning area, with the risk of 70 mph on coasts and hills. A small swathe of even stronger winds is likely to develop – most likely across parts of northern England, Wales, the Midlands and later East Anglia. Here a short period of gusts of 70 to 80 mph is likely – please refer to the separate Amber warning.

Travel services could be affected including some restrictions on bridges and disruption to ferries. Some damage to trees and buildings is also possible.

This is an update to the warning issued on Tuesday to extend the area at risk.

Chief Forecaster’s Assessment

A rapidly deepening area of low pressure, named Storm Doris, is expected to move quickly east across the UK during Thursday with strong winds on its southern and western flanks. Whilst there is confidence in the very windy spell, there is still some uncertainty about the track of Doris, and therefore the extent of the strongest winds.

Met Office Issues Yellow Weather Warning – Snow

Issued at: 09:27 on Wednesday 22 February 2017

Valid from: 02:00 on Thursday 23 February 2017

Valid to: 18:00 on Thursday 23 February 2017

Snow is expected over the high ground of northern England and Scotland on Thursday and may fall to low levels for a time in Scotland. Snow accumulations of 3 to 6 cm are likely above 200 metres with 10 cm or more above 300 metres. At low levels, including the Central Belt, 1 to 3 cm is possible in places. Expect some disruption to transport networks and possibly power supplies.

Associated heavy rain at low levels will be an additional hazard.

The warning has been updated to slightly shrink the yellow area and also to change the position in the risk matrix.

Chief Forecaster’s Assessment

A developing area of low pressure, named Storm Doris, is expected to move east across the UK during Thursday.

Rain or sleet will occur at low levels at first, but some snow is also likely, perhaps more so as the system clears to the east. However, over the high ground and particularly the Southern Uplands, a spell of heavy snow looks likely.

In addition heavy rain may lead to some localised flooding at lower levels.

Met Office Issues Yellow Weather Alert – Rain & Snow

Issued at: 11:31 on Thursday 10 December 2015

Valid from: 12:00 on Saturday 12 December 2015

Valid to: 23:50 on Saturday 12 December 2015

Rain is likely to spread from the southwest during Saturday. There is a low likelihood of this being sufficiently heavy and prolonged as to lead to some flooding of properties and parts of communities, as well as some travel disruption. However, any impacts are not expected to be as widespread or severe as those observed last weekend.

In addition, there is also the potential for the rain to turn to snow and accumulate – mostly likely, but not exclusively, on high ground. Much uncertainty surrounds Saturday’s weather, but there is the potential for disruption from both rain and snow. This alert will be kept under review and updated as necessary.

Chief Forecaster’s Assessment:

An area of low pressure, associated with a sharp north-south temperature contrast, is expected to move eastwards somewhere across central Britain on Saturday. This has the potential to produce 20 to 40 mm rainfall quite widely. Given saturated ground, this could lead to some flooding.

However, as the associated precipitation encounters colder air across northern England, it may turn to snow. This is most likely towards the north of the yellow area and on high ground, with 5 to 10 cm potentially accumulating above around 200 m. Whilst this would reduce the risk of flooding, it may lead to some travel disruption, especially where flooded roads have been closed and more minor routes are in greater use.

This development is associated with a high degree of uncertainty, especially regarding the track and timing of the depression, and this alert will be kept under review.