Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

So we are about a month out from when the snowpack reaches its normal peak depth and theoretically should contain the most liquid or snow water equivalent (SWE). The normal date for this peak in Colorado is April 9th and in Utah April 4th but the actual peak date varies in any given water year.

This time series graph of snowpack for Colorado shows the current (dark blue) state of the SWE compared to normal (red) and 2017 (blue). As of March 5th the snowpack in the State of Colorado was 69% percent of normal and 52% of what it was on this date in 2017.

Here is a similar graph for Utah, again not a lot of good news.

Below is a visual map of SWE made using ground, airborne and satellite data comparing the snowpack of the past two years on March 5th.

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Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

Comparison of the March 5th Snowpack of 2018 vs 2017 across Utah and Colorado