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Cliff Mass
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Too Warm
While the passes are getting hammered with snow right now (chains required at Snoqualmie), the lower atmosphere is too warm to get snow down to near sea level.  Snow is being reported at higher stations (e.g., Paine Field in Everett) and over NW Washington,...

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Marginal Lowland Snow, Again.
Folks... this is getting tiring.  Another situation in which lowland temperatures are marginal for snow, making the forecast exquisitely difficult and elevation dependent.  With rapidly increasing day length and strengthening sun, we are almost out of the l...

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Why has California Been Wet and Washington State Cool This WInter
It has been a remarkable winter so far, very different in character from the previous winter seasons.  During the past 90 days, the southwest US, and particularly California and Nevada, have been MUCH wetter than normal.  Some locations have had over 400% o...

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La Nina is Dead. Can El Nino Be Far Behind?
I have sad news for all of you. La Nina is dead .   Done. Finished. Terminated.   The final word came out a week ago, provided by the august U.S. Climate Prediction Center (see below). And it appear that we have a better than even chance of moving back into...

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Serious Threat to the Oroville Dam
The latest forecasts are very worrying regarding the heavily damaged Oroville Dam in California.  And I am surprised there is to so little talk by CA state officials and the media about the danger. During the past few days, with little rain and active drain...

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Will Seattle Beat the All-Time February Precipitation Record? Almost Certainly Yes/
People love records.   And precipitation records are falling over the West Coast. Here is Seattle, the record February precipitation is 9.11 inches, which fell in 1961. As of midnight, Seattle Tacoma Airport had 7.85 inches so far this month. Since then, Se...

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Northwest Weather Hits Southern California with the Most Substantial Storm in Years
Southern California is about to be hit hard with heavy rain of 3-9 inches and powerful winds.  Flooding and slides are inevitable.   But it will have a silver lining:  any talk of drought in California should be ended as the last below-normal reservoirs are...

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For Some in California, the Worst is Yet to Come/
After a few day break, California is about to experience a period of very wet weather, with the potential for flooding and slope failures in southern California and threats to the Oroville dam in the north.   For the 24h ending 8 PM Wednesday, the fire hose...

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The West Coast Will Face An Extraordinarily Wet Period
Northern California is experiencing its wettest winter on record, with reservoirs full, the ground saturated, and many of the rivers at or near flood stage. Oroville Dam, northeast of Sacramento, is on the brink of failure and downstream residents have been...

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How much salt falls naturally out of the sky?
During the past several weeks, as snow has covered the roads of Washington and Oregon, salt is being used to prevent an ice layer from bonding to the concrete and to help melt the snow.  Clearly, salt can make travel far safer, prevent injuries and deaths, ...
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