More Floods and Evacuations in California--Plus Wind Gusts Topping 190 MPH

http://www.wunderground.com/blog/JeffMasters/more-floods-and-evacuations-in-californiaplus-wind-gusts-topping-190

The atmospheric river that slammed the central third of California on Monday left its mark in multiple ways, including what could end up as the highest reliably recorded wind gusts for the state (see below). Fortunately, the storm underperformed somewhat when it came to rainfall, much like its older sibling that hit southern California last Friday. Rainfall amounts in Bay Area cities on Monday came in well short of the potential suggested by multiple model runs, alt...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3563">Read More</a>

Dangerous, Multipronged Storm Strafing Central/Northern California

http://www.wunderground.com/blog/JeffMasters/dangerous-multipronged-storm-strafing-centralnorthern-california

What may become known as the President’s Day Storm of 2017 barreled into the San Francisco Bay area on Monday morning. The core of the storm was an atmospheric river roughly 75 to 100 miles wide, pointing a firehose of moisture toward vulnerable foothills and urban areas. With soils already sodden, the risk of flash flooding was high, and the tail end of the storm promised to bring ferocious winds into the area that could knock out power for many thousands of resi...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3562">Read More</a>

No Rest: Another Round of Intense Rains Heading for Central and Northern California

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While southern California tries to dry out from Friday’s watery onslaught, yet another atmospheric river will be pointed at central and northern California from late Sunday through Monday, exacerbating the woes of what’s already been a record-wet winter to date across the northern Sierra. Precipitation totals of 10” or more are possible early this week across parts of the Feather River watershed feeding into Lake Oroville. This is bound to push lake levels tow...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3561">Read More</a>

Epic Storm Pounds Southern California With Heavy Rain, High Wind and Huge Waves

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The epic assault of the winter of 2016 - 2017 on California continued on Friday morning as torrential rains, damaging winds and huge waves from a massive and powerful Pacific storm system pounded the Golden State. Carrying with it an “atmospheric river” of moisture originating in the subtropics near Hawaii, Friday’s storm was most dangerous because of its heavy rains. According to the National Weather Service in Oxnard, California, Friday and Saturday could b...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3560">Read More</a>

January 2017: Earth's 3rd Warmest January on Record; Lake Oroville Water Levels Drop

http://www.wunderground.com/blog/JeffMasters/january-2017-earths-3rd-warmest-january-on-record-lake-oroville-wat

January 2017 was the planet's third warmest January since record keeping began in 1880, said NOAA's National Centers for Environmental Information (NCEI) on Thursday. Along with NOAA, NASA also rated January 2017 as the third warmest January on record. The only warmer Januarys were 2016 (highest) and 2007 (second highest). Global ocean temperatures during January 2017 were the second warmest on record, and global land temperatures were the third warmest on record. G...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3559">Read More</a>

This is February? 80°F in Denver, 99° in Oklahoma, 66° in Iceland, 116° in Australia

http://www.wunderground.com/blog/JeffMasters/this-is-february-80f-in-denver-99-in-oklahoma-66-in-iceland-

The strong, recurrent Pacific jet stream that’s been delivering massive amounts of rain to California has also been pushing mild Pacific air downslope off the Rockies and eastward, keeping the southern two-thirds of the U.S. absurdly warm for early February. From New Mexico to Virginia southward to the Gulf Coast, trees and shrubs are budding out en masse up to three weeks ahead of schedule (see Figure 1). In Texas, Dallas-Fort Worth recorded its last freezing tem...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3558">Read More</a>

More than 180,000 Under Evacuation Orders as Oroville Dam Spillways Compromised

http://www.wunderground.com/blog/JeffMasters/more-than-180000-under-evacuation-orders-as-oroville-dam-spillways-co

Tens of thousands of Californians fled their homes on short notice Sunday evening about 60 miles north of Sacramento when the emergency (auxiliary) spillway at Oroville Dam--the nation’s tallest dam--showed signs of failure, prompting mandatory evacuations along the Feather River downstream, including the entire city of Oroville (population 16,000.) It was a dramatic turn of events in a situation that has gotten progressively worse over the last few days. Record a...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3557">Read More</a>

One Snowy, Windy Nor’easter Gone; More on the Way?

http://www.wunderground.com/blog/JeffMasters/one-snowy-windy-noreaster-gone-more-on-the-way

A fast-moving, hard-hitting snowstorm walloped large swaths of the Northeast U.S. and New England on Thursday, a mere day after record highs above 60°F had enveloped much of the region. Widespread wind gusts of 50 to 70 mph--qualifying the storm as a blizzard for several hours in many areas, including Boston--added to the impact of this classic midwinter event, which dropped widespread snow totals of a foot or more from Long Island, New York, to southwest Maine. On...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3556">Read More</a>

So Long, La Niña; Arctic Temperatures Soar 63°F in 24 Hours

http://www.wunderground.com/blog/JeffMasters/so-long-la-nia-arctic-temperatures-soar-63f-in-24-hours

In its latest monthly advisory, issued Thursday, NOAA’s Climate Prediction Center (CPC) sounded the death knell for the 2016-17 La Niña. SSTs in the benchmark Niño 3.4 region (in the equatorial Pacific) warmed to 0.3°C below average during early February; SSTs of 0.5°C or more below average in this region are required to be classified as weak La Niña conditions. As further evidence of the demise of La Niña, subsurface cold waters across the equatorial Pacif...<br /><a href="http://www.wunderground.com/blog/JeffMasters/comment.html?entrynum=3555">Read More</a>