>From Snow Drought to Snow Delight and more in Austrian and Swiss Alps, Snow & Severe Storms in Texas, Long Range Discussion

Written by on January 9, 2012 in Rest of Europe with 0 Comments

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Today’s Weather Headlines

THE GREAT FIGHTBACK OF OLD MAN WINTER MAY HAVE JUST BEGUN

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KEY SIGNALS WHICH ALLOW MAJOR COLD WAVES

Arctic Oscillation & North Atlantic Oscillation both suggest the coming of cold to the USA and much of Europe. Both may be shivering by Jan 20.

Charts courtesy of policlimate.com

The above chart shows the tanking of the AO which is the index which allows cold air to migrate southwards from the pole into the mid-latitides.

The above chart shows a tanking of the NAO into negative territory and this trends towards blocking over the north Atlantic, stopping the classic west to east flow of mild ocean across the USA as well as the UK, Ireland and much of Europe. The combo of a negative AO and NAO suggests increased chances of some very cold weather down the road for both North America and Europe.

The reason for these flips to negative from strongly positive is likely thanks to the development of a stratospheric warming event seen in the chart below. This shows warming high up in the atmosphere which splits the polar vortex and allows pools of warmth to push up into the polar region and ultimately the southward migration of this Arctic air.

Europe Latest

From too little snow to too much in Alps, Will that be the case soon with the cold?

Heavy snow blankets West Austria region of Vorarlberg
BBC

Latest Skiing Snow Forecast
BBC

US Latest

Heavy Snow and Tornadic Thunderstorms Impacting Texas today

Flash-Flooding and Tornado Threat for Houston
ACCUWEATHER.COM

VIDEO: Snow Baltimore/Wash., D.C.
ACCUWEATHER.COM

I-95 Mid-Atlantic’s Flirt with Snow Tonight
ACCUWEATHER.COM




Pattern-Changing Storm Aims for the Northeast
ACCUWEATHER.COM


Asia Latest

Arctic cold heads south, causing problems

Australia Latest

Wild Lightning Display over Sydney

South America Latest

Crops wilt in Argentina Heat Wave

Argentina Heat Stresses Summer Crops
ACCUWEATHER.COM

Africa Latest

Tropical Storm Chanda strikes Madagascar, dumps heavy rain for 2 days

Tropical storm Chanda hits Madagascar
BBC

Tropical storm Chanda struck Madagascar at about 18:00 GMT on 8 January
ALERT NET

THE EXTREMES OF THE DAY

TODAY’S US EXTREMES
COURTESY OF ACCUWEATHER

HIGH: 82° at Fort Myers, FL
LOW: -9° at Clayton Lake, ME

TODAY’S UK EXTREMES
COURTESY OF THE MET OFFICE

HIGH: 56° (13.1°C) at Shoreham (Kent)
LOW: 37° (2.6°C) at Loch Glascarnoch (Highland)

TODAY’S EXTREMES HERE AT MY HOUSE

HIGH: 50°
LOW: 36°

Thanks for reading.
-Mark

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