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World Series of bomb cyclones poised to form in the North Atlantic, will rake Europe with high winds, ‘phenomenal seas’

00:10  12 february  2020
00:10  12 february  2020 Source:   washingtonpost.com

Twin bomb cyclones to merge into one of strongest-ever storms in North Atlantic, hammering Iceland and threatening Britain as Storm Dennis

  Twin bomb cyclones to merge into one of strongest-ever storms in North Atlantic, hammering Iceland and threatening Britain as Storm Dennis One bomb cyclone is slamming Iceland with hurricane force winds on Friday, while another is hot on its heels. These storms will combine into one giant swirl, rivaling all other North Atlantic storms on record.Already on Friday morning, the first bomb cyclone, which has a minimum central air pressure of 929 millibars, roughly equivalent to a Category 4 hurricane, is slamming Iceland with blizzard conditions, mixed precipitation and heavy rain. Winds have been clocked at about 70 mph in the capital city of Reykjavik, and 90 mph at the international airport in Keflavik.

The North Atlantic Oscillation (NAO) is a weather phenomenon in the North Atlantic Ocean of fluctuations in the difference of atmospheric pressure at sea level (SLP) between the Icelandic Low and the Azores High .

Tropical cyclones are ranked on one of five tropical cyclone intensity scales, according to their maximum sustained winds and which tropical cyclone basin(s) they are located in.

The North Atlantic is stuck on its maximum tempest setting, sparking one rapidly intensifying low pressure area after another. These storms then barrel east-northeastward toward Greenland and Iceland, with tentacles of deadly wind, downpours, and snow extending down into continental Europe.

Waves crash over the harbour wall by a lighthouse as Storm Ciara hits Newhaven, on the south coast of England, Sunday, Feb. 9, 2020. (AP Photo/Matt Dunham)© Matt Dunham/AP Waves crash over the harbour wall by a lighthouse as Storm Ciara hits Newhaven, on the south coast of England, Sunday, Feb. 9, 2020. (AP Photo/Matt Dunham)

One such storm, which the U.K. Met Office named Storm Ciara, struck this past weekend, flooding homes, shutting schools and severing power as it battered Europe and Britain with wind speeds of nearly 100 mph.

Storm Dennis spawns major flooding in UK as 'danger to life' warnings issued

  Storm Dennis spawns major flooding in UK as 'danger to life' warnings issued An explosive winter storm that roared across the North Atlantic over the weekend is still having impacts across central England and Wales, as authorities on Tuesday declared severe flood warnings across the region.The Met Office, Britain's meteorological service, declared 10 severe flood warnings, meaning there is a "danger to life" for rivers Severn Trent, Wye and Lugg. More than 180 less severe flood warnings were also in place. Additional rain is in the forecast for Wednesday and Thursday, possibly extending flooding conditions.

The word “hurricane” is used for tropical cyclones that form in the North Atlantic , northeastern Pacific, the Caribbean Sea and the Gulf of Mexico. Typhoons are storms that develop in the northwestern Pacific and usually threaten Asia. The international date line serves as the Pacific

The 2018 North Indian Ocean cyclone season was the most active North Indian Ocean cyclone season since 1992, with the formation of fourteen depressions and seven cyclones . The North Indian Ocean cyclone season has no official bounds

Now, the U.K. Met Office is warning that Storm Dennis is on the way late in the week, warning residents to brace for “very strong winds,” along with the likelihood of snow and heavy rainfall late this week into the weekend. A yellow warning is currently in place for Saturday, meaning that disruption is likely — along with snow and ice across parts of the United Kingdom.

Nicknamed “Dennis the Menace” by social media users, the storm is expected to be fierce but is not predicted to cause as much destruction as Ciara — which claimed seven lives across Europe in total, according to the BBC. In southern England, a 58-year-old man died after a falling tree struck his vehicle as he was driving in Hampshire on Sunday. Two others in Germany and Slovenia were also killed in their cars.

Storm Dennis will be a menace for the UK

  Storm Dennis will be a menace for the UK One week after Storm Ciara lashed the United Kingdom with heavy rain and extreme wind gusts, another storm is knocking at the door. © Provided by CNNStorm Dennis is now taking shape in the Western Atlantic and will become more menacing over the next day. A separate but powerful low-pressure system is already in the Atlantic, which will bring damaging winds and blowing snow to Iceland Friday.Coastal areas of Iceland could see hurricane-force winds Friday, with gusts over 124 mph (200 kph) warned the Icelandic met office. These two systems will dance around each other Friday before Dennis moves east.

One of the strongest storms on record to form in the North Atlantic is set to rock Iceland with winds above hurricane force by Wednesday. Aiding its explosive development is a jet stream on steroids, with winds of 230 miles per hour roaring across the North Atlantic at aircraft cruising altitudes.

Unfortunately, high winds and waves caused the crew to quickly recall all the tenders and set sail "Ladies and gentlemen, we are in rough seas and we are optimizing our speed and course to The Norwegian Breakaway is just the latest cruise ship to wind up in the wrong place at the wrong time.

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These two storms are part of a broader weather pattern featuring an ultra-intense jet stream blowing almost straight west-to-east across the North Atlantic at speeds upward of 200 mph. The powerhouse jet stream — a highway of air at about 30,000 feet above the surface that helps to steer storm systems — is the result of strong air pressure differences between Arctic low pressure and high pressure areas to the south. It is helping to invigorate storm systems as they move off the coast of the U.S. and into the North Atlantic.

This howling jet stream helped a British Airways Boeing 747-400 achieve an unofficial record time between New York’s JFK Airport and London Heathrow on Saturday night, flying the route in just four hours and 56 minutes.

During the next seven days, computer models are showing the rapid development of a low pressure zone that could have a minimum central air pressure of at least four standard deviations below average for this time of year. That’s no small feat for the typically stormy month of February in the North Atlantic.

Storm Ciara kills at least six in Europe

  Storm Ciara kills at least six in Europe A woman and her two daughters died in Poland after winds tore the roof off a ski rental shop.At least six people have died across Europe as Storm Ciara moves east, shutting down transport and leaving hundreds of thousands without power.

Dangerous storm targets Northeast, Mid- Atlantic with high winds , coastal flooding, inland snow. This is because there's a massive block in the upper level winds , known as the jet stream, blowing Second, all computer models are converging on a solution in which a storm will form off the coast of

The 1908 Atlantic hurricane season ran from June 1 to November 30 in 1908. These dates conventionally delimit the year in which most tropical cyclones form in the Atlantic basin.

The American and European forecast models both show the same scenario, with a complex storm system swirling just south of Iceland on Saturday that could have an air pressure reading more typically seen in a Category 5 hurricane. (In general, the lower the pressure, the stronger the storm.) The storm will intensify rapidly too, with its pressure reading plummeting by more than 24 millibars in 24 hours, qualifying as a weather “bomb" or “bomb cyclone.”

This setup will help to swipe the U.K. with damaging winds, heavy surf, and periods of rain and snow. It could also cause a widespread area of high offshore waves, with maximum wave heights of 40 to 100 feet off the coasts of Ireland and Iceland by next weekend.

The National Weather Service’s Ocean Prediction Center described the threat this way in a tweet on Tuesday afternoon: “... Forecast charts show a very active N Atlantic low track producing multiple rounds of hazardous marine conditions including widespread hurricane force winds & phenomenal seas.” The forecast center, which warns ships of dangerous conditions, said wave heights could exceed 45 feet.

Army deployed as storm Dennis hits UK

  Army deployed as storm Dennis hits UK The British army was drafted in on Saturday as Storm Dennis descended on the country, with high winds and heavy rain threatening travel chaos and widespread flooding. British Airways and easyJet confirmed they had grounded flights, while two bodies were pulled from rough seas off the south England coast on Saturday as the storm barrelled in. One of the men is assumed to have been the subject of a search triggered when an LPG tanker reported that one of its crew was unaccounted for.© Oli SCARFF Members of the 4th Battalion Yorkshire Regiment erect flood barricades in Ilkley, West Yorkshire on Saturday He had been last seen several hours previously.

The 1933 Atlantic hurricane season was the second-most active Atlantic hurricane season on record, behind only the 2005 season, with 20 storms forming in the northwest Atlantic Ocean, breaking the record set by 1887.

In the Indian Ocean north of the equator, tropical cyclones can form throughout the year on either side of India. On the east side is the Bay of Bengal, and on the west side is the Arabian Sea . The Bay of Bengal, located in the northeast of the Indian Ocean

There’s nothing unusual about intense winter storms forming in the North Atlantic at this time of year. However, what’s especially noteworthy about this weather pattern is the frequency and intensity of the storms spawned in the North Atlantic. Very few of these storms have their minimum central air pressure drop to 930 millibars or lower. The storm east of Greenland (which helped propel Ciara into Europe) last weekend accomplished this feat and so could the tempest southwest of Iceland less than a week later.

“Sequences of storms are frequently what happens when you have a strong zonal jet,” said meteorologist Ryan Maue via Twitter message, referring to a jet stream that is blowing more or less straight across the ocean basin. Maue has studied the process of rapid intensification in nontropical storms.

He said there may be “only a few similar cases in the satellite era” with a low pressure area having an air pressure reading as low as 928 millibars, as the European model projects on Friday into Saturday (the Ocean Prediction Center forecasts an even stronger low, at 924 millibars).

a close up of a map: European model projection showing two intense low pressure areas swirling south of Iceland on Saturday, Feb. 15, 2020. (Weatherbell)© Weatherbell/Weatherbell European model projection showing two intense low pressure areas swirling south of Iceland on Saturday, Feb. 15, 2020. (Weatherbell)

A search of a weather database turned up just 10 other nontropical storms in the North Atlantic that had sub-930 millibar pressure readings since the start of the database in 1979, Maue found.

The strong jet stream is characteristic of periods when a weather pattern above the North Atlantic, known as the Arctic Oscillation (AO), is in a so-called positive state, with low pressure predominating near Greenland and a ridge of high pressure in the northeastern Atlantic. On Monday, the AO set a daily record for its most positive reading since such record-keeping began.

In addition to the deaths from Ciara, these storm systems can have a wide range of impacts. Last month, for example, Newfoundland was buried by one of its worst blizzards on record when a storm underwent rapid intensification and piled snow up to the second to third story of buildings in downtown Halifax.

Then came this past week, when at least two extremely powerful storms interacted amid the intense jet stream winds. Although it proved to be disruptive, Storm Ciara was actually the weaker of these Atlantic storms.

Flight breaks transatlantic speed record .
A flight from New York to London made history Sunday with the fastest subsonic speed record.British Airways Flight 112 made the trip in 4 hours 56 minutes -- 17 minutes faster than the previous record made by a Norwegian flight from New York to London, according to the flight tracker blog Flightradar24.

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