BRITAIN will be battered by an Arctic blast from Iceland next week – bringing snow, ice, flooding and bitter gales.
Forecasters last night warned the mercury will plummet to near freezing in many areas with daytime temperatures 15C lower than this time last year.
The Scottish Highlands and parts of northern England could see their first dusting of snow, while the entire country faces cold conditions and possible frosts. Forecasters said the bitter weather is likely to remain for the next few weeks with significant snow by the middle of the month.
The wintry forecast comes as the country recovers from a week of torrential downpours which have sparked devastating floods.
More than two months’ worth of rain has fallen in parts causing rivers to burst banks and forcing hundreds of families from their homes.
After the disaster in Spain yesterday, today, it's the south of France, as expected. A true "monster" storm, as we see from the pictures accompanying the article, is ascending the western Mediterranean and precisely in the next few hours this afternoon, will fall upon the south of France, hitting Languedoc, Roussillon, Provence and the French Riviera. At the risk the city of Montpellier, Nimes, Perpignan, Marseille, Toulon, Nice and Avignon.
Maximum alert for possible violent thunderstorms, with hail and torrential rain!
Spain and southern France, between 29 and Saturday morning, a devastating flood risk! In fact, the intense heat wave that in the coming hours will affect Central Italy / South Asia, with high temperatures in the center / south, probably a record for the period, it will be caused by a powerful thrust north Atlantic Ocean on the Iberian Peninsula and North Africa: Saturday in Morocco there will be 10-15 ° C lower than in Puglia and Calabria, because the cold air invadrà the British Isles will catapult you to the south in western Europe, fueling a profound disturbance driven by a drop in the proportion that is cold move from the Atlantic Ocean into the western Mediterranean, passing through the Straits of Gibraltar in the morning and then coming on the Balearic Islands.
For Spain facing a nightmare for hours: tomorrow morning starts to rain so abundant in Andalucía, Murcia and Valencia, with torrential rains of Malaga, Almeria, Cartagena, Albacete, Alicante and Valencia itself. The phenomena will be intensified during the afternoon / evening, going to the north and hitting so too Madrid, moving then to Aragon and Catalonia. In the night between Friday and Saturday, the storms hit Zaragoza and Barcelona, but will continue to rain also between Castile and Valencia. Just the city of Valencia will be the most affected, and likely many extreme events, not only torrential rain, but hail and tornadoes.
Flooding is still causing problems for roads, rail and properties, as the most intense September storm for 30 years continues. About 70 warnings were in place, mainly in the north of England.
Some areas could receive a further 20-40mm (0.8-1.6ins) of rain. However, the weather will slowly improve throughout the day, forecasters said. Hundreds of people spent the night in temporary shelter and parts of many roads were closed.
Tuesday saw some places deluged in what was their wettest September day on record, with hundreds of homes being evacuated.
The jet stream pattern across North America will have a high degree of amplitude through the weekend, which usually means that there can be extended periods of extremes from one coast to the other.
The image below shows the overall pattern this weekend. Two strong ridges of high pressure aloft, one anchored over the Canadian Rockies and the other just off Newfoundland, will keep those regions unusually warm. The big difference between the two is that the air in the west is very dry, while the air will remain humid across Atlantic Canada.
The UK has seen some very wet and windy weather since the early hours of Sunday morning and that is set to continue in places for the next couple of days – but what has brought these disruptive conditions?
As is the norm, a low pressure which moved in from the Atlantic is to blame, bringing bands of heavy rain and strong winds (as you can see from the tightly packed isobars on the image below).
Forecast synoptic chart for 12:00 on Tuesday 25 September showing the low pressure over the UK.
I had already taken a snapshot of the Jet Stream location on Saturday, and nothing looked out of the ordinary, but today I noticed that it was further south (above chart - right). The following story paints a very cold forecast for the UK and some of Europe, anyone would think it's Winter!
Just a guess on my part but therecent solar activity (yesterday and today) may have played a part with changes to the location of the Jet Stream, if I am correct, the Jet Stream will change it's location world-wide...more to follow
A powerful storm wreaked havoc on the Arctic sea ice cover in August 2012. This visualization shows the strength and direction of the winds and their impact on the ice: the red vectors represent the fastest winds, while blue vectors stand for slower winds. Credit: NASA/Goddard Science Visualization Studio
The first thought that crossed my mind was, what, if any, is the effect we have had on Earth?
I had a look at one indicator (TropicalStormRisk.com) to see if there was any sign of a "power up" going on with Tropical Storms and drew a blank on that.
Then I looked at the netweather.tv to see if the Jet Stream had any significant movement, this, unlike the fast "power up" we see with tropical storms, can take a few days to materialise. The result is quite astonishing....see below
The shift has been slower than we expected and bends in the Jet stream in Europe sharper so although 18-19th showed the high pressure in the South we forecast the 2 weather periods August 20-22 & 23-27 are wetter than we expected with thundery showers which will be heavy at times in places (espec Ireland & West Britain while the S/E is sunnier).
The forecast comes back on track at end of August with Higher Pressure and NE’ly flow we expected looks set to arrive at the start of September.
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