Freak storm in North Atlantic to lash UK, may push temperatures 70 degrees … – Washington Post

The vigorous low pressure system that helped spawn devastating tornadoes in the Dallas area on Saturday is forecast to explode into a monstrous storm over Iceland by Wednesday.

[Nature’s startling contrast: Tornadoes torment Texas; Blizzard buries New Mexico]

Big Icelandic storms are common in winter, but this one may rank among the strongest and will draw northward an incredible surge of warmth pushing temperatures at the North Pole up to 70 degrees above normal.  This is mind-boggling.

And the storm will  batter the United Kingdom, reeling from recent flooding, with another round of rain and wind.

Computer model simulations show the storm, sweeping across the north central Atlantic today, rapidly intensifying along a jet stream ripping above the ocean at 230 mph.

The storm’s pressure is forecast by the GFS model to plummet more than 50 millibars in 24 hours between Monday night and Tuesday night, easily meeting the criteria of a ‘bomb cyclone’ (a drop in pressure of at least 24 mb in 24 hours),

By Wednesday morning, when the storm reaches Iceland and nears maximum strength, its minimum pressure is forecast to be near 923 mb, which would rank among the great storms of the North Atlantic. (Note: there is some uncertainty as to how much it will intensify. The European model only drops the minimum pressure to around 936 mb, which is strong but not that unusual). Winds of hurricane force are likely to span hundreds of miles in the North Atlantic.

Environmental blogger Robert Scribbler notes this storm will be linked within a “daisy chain” of two other powerful North Atlantic low pressure systems forming a “truly extreme storm system.” He adds: “The Icelandic coast and near off-shore regions are expected to see heavy precipitation hurled over the island by 90 to 100 mile per hour or stronger winds raging out of 35-40 foot seas. Meanwhile, the UK will find itself in the grips of an extraordinarily strong southerly gale running over the backs of 30 foot swells.”

The UK Met Office cautions “a swathe of gale and severe gale force winds” may blast parts of the west and northern UK while heavy rains, capable of flooding, drench western and northern Britain. Parts of England, Scotland and Wales are only now recovering from “very serious flooding” over the weekend.

Ahead of the storm, the surge of warm air making a beeline towards the North Pole is astonishing. In the animation below, watch the warm temperature departures from normal, portrayed by red shades, explode towards the Pole between Monday and Wednesday.

It’s as if a bomb went off. And, in fact, it did. The exploding storm acts a remarkably efficient heat engine, drawing warm air from the tropics to the top of the Earth.

The GFS model projects the temperature at the North Pole to reach near freezing or 32 degrees early Wednesday. Consider the average winter temperature there is around 40 degrees below zero. If the temperature rises to freezing, it would signify a departure from normal of over 70 degrees.

Scribbler says such an anomaly “reeks of a human-forced warming of the Earth’s climate”, although some climate scientists aren’t convinced global warming is meaningfully impacting these types of storms.

The abrupt warming at high latitudes triggered by this event is forecast to shift the Arctic Oscillation more towards a negative phase, which will favor colder air in the mid-latitudes of North America and Europe in early January.

Freak storm in North Atlantic to lash UK, may push temperatures 70 degrees … – Washington Post

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