US: White Carpet Begins to Get Laid In Preparation of The Arctic Emptying South!

Written by on January 15, 2019 in United States of America with 0 Comments

A major cross country snow system during the past weekend produced record snow from St Louis to DC and this shall be followed by another three over the next 7 days.

GFS snow forecast through the next 10 days.

Credit: Tropical Tidbits

This stormy and increasingly colder pattern is the beginning to the much anticipated harsher 2nd half to winter 2018-19. A hemispheric response to the late December SSWE.

Since the SSWE officially occurred around Christmas with the reversal of winds at 10hpa, we’ve seen the vortex split into 3.

Since this three way split, cold has descended through the stratosphere into troposphere and we’re finally beginning to observe the response with soaring heights throughout the Arctic. Over the next 2 weeks we should see the completion of twin ridges anchored over Alaska and Greenland as the cold troughs lock into place.

Snow totals were surprisingly impressive from the last storm.

We’ve entered a colder and stormier pattern with an enhanced jet stream driving Pacific lows into the West Coast at the same time arctic air is beginning to push southwards. Pacific and eventually Gulf moisture merging with cold, dry Canadian air to the east of the Rockies is a perfect setup for storm intensification and major snowstorms as well as the opening of the freezer door.

Firstly, we have a major rain and snowstorm taking aim at California with several FEET of snow can be expected over the High Sierra while from Santa Barbara through the LA Basin into the mountains, we can expect upwards of 2-4, locally 6 inches of rainfall.

Credit: weather.com

Credit: weather.com

3-6 feet of snow could fall from Lake Tahoe to Mammoth Basin.

Credit: weather.com

Overall setup.

Credit: weather.com

Credit: weather.com

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Credit: Tropical Tidbits

See how the US pattern becomes progressively colder over the next 2 weeks according to the GFS ensemble.

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Credit: Tropical Tidbits

Featured image credit: Jen Johnson @tPFmariah9999

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