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Snow covers Britain as warnings are issued over ‘hazardous’ conditions #snow #ice #uk #britain #WeatherWarnings #YellowAlert

STORM DENNIS UPDATE: HUGE WAVES CRASH AGAINST WELSH SHORE IN PORTHCAWL #StormDennis #SevereAlert #waves #porthcawl #wales

As Storm Dennis rolls in to batter the UK, sightseers and storm watchers were out to witness the huge waves in Porthcawl, on the south coast of Wales.

There is a yellow warning for wind and rain in place for South Wales as the Met Office forecast heavy and persistent rain and severe gales for coastlines in the area.

Courtesy of thesun.co.uk

STORM DENNIS UPDATE: Hundreds of flights cancelled in the UK and army called in ahead of heavy winds and flooding #StormDENNIS #flights #planes #cancellations #army #SevereAlert #FloodAlert #gales #UK

Storm Alert

Warnings are in place across the whole of the UK, while a month’s worth of rainfall is expected in places.

Hundreds of flights have been cancelled and the army has been called in as Storm Dennis prepares to hit the UK with strong winds and flooding.

The UK is bracing for disruption as the “perfect storm” approaches, bringing gusts of up to 70mph (113kmph).

The storm could bring a month’s rainfall in one day and some parts of the country could see up to 12cm (4.7in).

More than 230 easyJet flights in and out of the UK have been cancelled due to the weather on Saturday.

British Airways has said most of its flights are scheduled to go ahead as planned, but it is expecting disruption due to strong winds.

As of 9.30am on Saturday, there were 14 flood warnings – meaning people should take immediate action as flooding is expected – and 140 flood alerts, which means flooding is possible.

Forecasters have issued separate weather warnings for rain and wind covering most of the UK until Monday.

This includes amber warnings from midday on Saturday over southern Scotland, northern England, Wales and part of the South West saying that flooding could cause a danger to life.

Troops are being deployed to help with flood preparations in the Calder Valley in West Yorkshire.

The Ministry of Justice has said 75 personnel based in Catterick and 70 reservists from Yorkshire are constructing around 700m of barriers, helping to repair defences and lay down sandbags.

Calderdale Council leader Tim Swift said: “The presence of army officers in Calderdale will be a reassuring sight for the many residents and businesses who are still recovering from Storm Ciara and preparing for Storm Dennis.

“Council staff, partners, volunteers and community groups have worked tirelessly all week and will continue to work around the clock for as long as necessary to help keep people safe and to manage the flood risk.”

A Royal Navy ship is assisting in a search and rescue operation off the coast of Margate, Kent, after a man was reported overboard from a vessel at around 5:41am on Saturday.

It it is not clear if the incident is connected to Storm Dennis.

RNLI lifeboats, a police boat and the coastguard helicopter are assisting with the Navy ship with the search.

The Met Office says Storm Dennis poses a greater risk of widespread flooding than Storm Ciara the weekend before.

The Environment Agency (EA) said this is due to rain falling on already saturated ground.

Power cuts are also expected and there is a good chance train and buses will see cancellations or delays and roads closed.

Courtesy of Sky News

https://tinyurl.com/uklv78p

SEVERE GALES PROMPTS YELLOW AND ORANGE ALERTS ACROSS ICELAND #SevereGales #YellowAlert #OrangeAlert

Storms in Iceland 14.02.2020

Orange alert for weather: Breidafjordur – Westnorthwest Iceland, Westfjords, Northwest Iceland, Eastfjords and Central highlands – Uninhabited part of Iceland

Yellow alert for weather: South Iceland, Westfjords and Southeast Iceland

Courtesy of en.vedur.is

Yellow Alert issued due to unusual rapid inflation beneath Mt. Thorbjorn on Reykjanes peninsula, Iceland #YellowAlert #MountThorbjorn #reykjanes #iceland

The map shows recent earthquake activity in the area. Mt. Thorbjorn is situated just above the black triangle which indicates one of IMO’s seismographs.

Inflation has been detected in the last few days. An earthquake swarm has been ongoing during the same period. A state of uncertainty has been declared. The aviation color code has been raised to yellow for Reykjanes.

An inflation has been detected since January 21st and is centred just west of Mt. Thorbjorn on Reykjanes peninsula. The inflation is unusually rapid, around 3-4 mm per day and has accumulated to 2 cm to date. It has been detected both on continuous GPS stations and in InSAR images. The inflation is most likely a sign of magma accumulation at a depth of just a few km. If magma accumulation is causing the inflation, the accumulation is very small, with the first volume estimate is around 1 million cubic meters (0,001 km3). This is the conclusion of a meeting held with the Scientific council of the Civil Protection at the IMO this morning.

Accurate measurements of crustal deformation on Reykjanes peninsula span approx. three decades. During this period no comparable signal has been measured. This is unusual for this period. An earthquake swarm has been ongoing, since January 21st, alongside the deformation signal just east of the inflation centre (northeast of Grindavík). The largest earthquakes occurred on January 22nd and were of M3,7 and 3,6. They were felt widely on the Reykjanes peninsula and all the way to Borgarnes region. The earthquake swarm is currently in decline. Swarms like this are common and not unusual by itself in the area. The fact that an inflation is occurring alongside the earthquake swarm is a cause for concern and closer monitoring.

The inflation is centred within an active volcanic zone

The inflation is occurring on plate boundaries and within the volcanic system of Svartsengi which is either considered a separate system or part of the Reykjanes volcanic system. The last known eruption was during Reykjanes fires, which occurred between 1210-1240 AD. Within that period a several eruptions occurred within that system, thereof there were three eruptions in Svartsengi system. The eruptions were effusive (non-explosive) fissure eruptions erupting on 1-10 km long fissures. No explosive eruptions are known from this system. The largest eruption in the swarm, from 13th century, formed Arnarseturshraun lava (estimated 0,3 km3 and 20 km2). Historically, the duration of these eruptions spans from a few days up to several weeks. Seismic activity is very common in this area and is linked to the plate boundaries, geothermal activity and possible magma intrusions. The largest earthquakes measured in this area are about M5.5.

Courtesy of en.vedur.is

https://tinyurl.com/yxygq4q4

#UK #COLD #WEATHER ALERT LEVEL 2

UK COLD WEATHER ALERT LEVEL 2 17.01.2020

Courtesy of UK Met Office

#UK #Snow: Weather warnings as #snow hits parts of the #UK

snow-rhigos-mountain.

A layer of snow covers the mountains near Rhigos

Snow has fallen in some parts of the UK, causing trouble on the roads.

Areas like Gloucestershire, parts of Wiltshire, Bath and South Wales have seen a few centimetres of snow fall.

A yellow weather warning has been in place in some areas, with local services asking people to take care when travelling.

Some trains, cars and planes have been delayed by snow too.

There have been no reports of schools closing because of the snow.

Weather experts have said there may be more snow in areas where the ground is higher, like the Peak District and Brecon Beacons.

However, the snow might soon turn to rain in places like Nottingham, Sheffield and Doncaster as a yellow weather warning for rain is in place.

These are areas which have already been affected by heavy flooding.

Courtesy of bbc.co.uk

https://tinyurl.com/qm3t7dz

#YellowAlert Issued Due To Increased #SeismicActivity At #MaunaLoaVolcano In #Hawaii

Earthquakes under Manua Loa during the past week (image: HVO / USGS)

The alert level for the volcano has been raised to yellow two days ago. This doesn’t mean that an eruption is expected to occur in a near future, but acknowledges that the volcano is currently preparing itself for its next eruption, which will come, sooner or later, but currently without possibility to indicate a specific time frame.

The Hawaiian Volcano Observatory (HVO) reported that “for the past several months, earthquake and ground deformation rates at Mauna Loa Volcano have exceeded long term background levels. An eruption is not imminent and current rates are not cause for alarm. However, they do indicate changes in the shallow magma storage system at Mauna Loa.”

Courtesy of volcanodiscovery.com

https://tinyurl.com/y235wg4r