WeatherWatcher: Forecast, Friday snowstorm, December graphs

Saturday, December 10, 2016

Forecast: Sunday temperatures will be cool, in the low 40's at best with rain showers until late in the evening. Sunday night into Monday another round of Arctic air is moving into the region, and this one will be colder than last week.

As it moves in, some scattered hit or miss snow showers are expected. It is not known at this time if accumulations will occur or not. Low temperatures will drop into the mid-upper 20's.

Monday through Thursday it will be clear, very cold with sunny days. High temperatures will struggle to break 32°F with lows possibly into the upper teens, but most likely in the low 20's.

Thursday night into Friday early indications are a new storm will move into the region and possibly bring with it another widespread snow event. No details at this time but I'll be watching this closely as it develops.

Further out there is no hint or indication that we will thaw, in fact most long range models have us in the freezer through New Years. Of course, the farther out computer models run, the much more uncertain they get so no guarantee on a prolonged cold but be prepared just in case.

Friday's Snow Event: I know the National Weather Service has a lot of crying wolf this season with uncertain models, but their goal is to make sure the public knows significant weather is possible with certain storm systems moving in. Friday's forecast and winter weather advisory verified, with the advisory of 1-3 inches of snow accumulation, Shoreline reached exactly 3 inches by 5am before things started warming up.

This was not a major event by any means, really the long cold freeze is a bigger story normally. However this was our first snow event exceeding 1 inch since February 9, 2014 at 2.5 inches of snow, and biggest snow since January 2012 when we received 5-7 inches of snow over the course of 4 days.

Graphs for December: Now to the good stuff. We are in fact running below average on temperature for the first time in over a year. I've re-worked my graphs in my data sheets to include more things like average daily rain over the course of the month, and this week, snow accumulations.

Below is the daily average temperature graphed out which better shows how warm or cold we are compared to normal.
Daily average temperature compared to station average.

Here's the break down on daily high temperatures and daily low temperatures:
Daily high and low temperatures compared to station average.

Last is my new daily precipitation graph which now includes snow accumulation:
Daily Precipitation
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Dave Lange, Ridgecrest,  December 11, 2016 at 10:47 AM  

Thank you for posting. I agree Friday's forecast was pretty close! It was bad enough to catch a couple of Metro buses on a hill and deep enough for a couple of good sized snowmen!

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