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California Drought/Polar Vortex Jet Stream Pattern Linked to Global Warming

Dr. Jeff Masters, April 16, 2014

Director of Meteorology, Weather Underground

From November 2013 - January 2014, a remarkably extreme jet stream pattern set up over North America, bringing the infamous "Polar Vortex" of cold air to the Midwest and Eastern U.S., and a "Ridiculously Resilient Ridge" of high pressure over California, which brought the worst winter drought conditions ever recorded to that state. A new study by Utah State scientist S.-Y. Simon Wang found that this jet stream pattern was the most extreme on record, and likely could not have grown so extreme without the influence of human-caused global warming.

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March 2014 Global Weather Extremes Summary

Christopher C. Burt, April 15, 2014

Weather Historian, Weather Underground

March featured a number of anomalous extreme weather events such as the floods in portions of Egypt and New Zealand, a freak hailstorm in Asmara, Eritrea, record warmth in much of Europe, severe cold and snow in the eastern half of the U.S. and heavy rainfall in the Pacific Northwest that culminated in a deadly landslide in Washington. Preliminary data from NASA indicates that globally (land-ocean temperature index), it was the 4th warmest March on record (since 1880).

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Metrologiske blogs

Welcome to Your New WU

Michelle Schlachta, April 16, 2014

Community Manager, Weather Underground

Your experience and feedback are what truly power this site and have helped to shape the redesign you see today. To make it happen, our product teams and developers have spent time with the Weather Un...

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A Look Behind the Redesign

Wunder Video Blog, April 16, 2014

Videos from Weather Underground

A look behind Weather Underground's legacy and what the redesign means for the future.

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Launched the New PWS Dashboard!

Kari Strenfel, April 15, 2014

Meteorologist, Weather Underground

Checkout the changes to the PWS history page and give feedback.

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Trout season in full swing across the US

Jim Root, April 14, 2014

Professional Bass Angler

There is little purer than Trout fishing in America. It's timeless, romantic, and above all else it represents the end of winter.

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Portlight Conference, New Jersey

Portlight, April 8, 2014

Disaster Relief Organization

Shelter and transportation accessibility are of paramount importance to people with disabilities in disaster situations. All too often in recent events these considerations have gone unaddressed...putting the lives of people with disabilities in grave danger. For shelter operators, addressing the needs of people living with disabilities can be a complex and confusing issue.

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Cool and stormy weather pattern continues through mid March

Zachary Labe, Marts 12, 2014

Northeast Weather Analyst

A wintry pattern will continue as a series of troughs rotate through the Northeast over the next two weeks. Several shortwaves will have the potential to amplify into larger storm systems. A period of interest for winter weather revolves around St. Patrick's Day. Stay tuned!

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Climate Change  JeffMasters  California Drought/Polar Vortex Jet Stream Pattern Linked to Global Warming  9 hours ago 
Extreme Weather  JeffMasters  California Drought/Polar Vortex Jet Stream Pattern Linked to Global Warming  9 hours ago 
Drought  JeffMasters  California Drought/Polar Vortex Jet Stream Pattern Linked to Global Warming  9 hours ago 
Site Redesign  riahriah  A Look Behind the Redesign  11 hours ago 
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latinamericansummary  latinamericansummary  Weather Underground Latin American Forecast for Wednesday, April 16, 2014  12 hours ago 
europeansummary  europeansummary  Weather Underground European Forecast for Wednesday, April 16, 2014  12 hours ago 
nationalsummary  nationalsummary  Weather Underground National Forecast for Wednesday, April 16, 2014  12 hours ago 
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