WeatherWatcher: High Wind Watch, Getting Colder

Saturday, December 15, 2012
  • High Wind Watch issued.
  • Week ahead, colder air moving in, snow?
  • Weather data so far in December.
Wind: December 15, 2012 at 8:51 PM the National Weather Service in Seattle has issued a high wind watch for the Puget Sound Lowlands, Shoreline and Lake Forest Park are included in the areas under the watch.  A strong low pressure system has the potential to produce high winds to Western Washington from late Sunday afternoon through Monday morning.  Exact track of this 975 Millibar low remains uncertain and depending on where it makes land fall will have a big impact on where the high winds develop.  Winds are expected to rise Sunday evening to about 25 - 35 mph sustained with gusts to 60 mph.

This week's Forecast: We have a strong storm moving in Sunday evening into Monday, and a series of fronts that will move through the remainder of the week.  We have a pool of cold arctic air in Western Canada of which is filtering into Western Washington from this new series of storms that are tracking through the middle of the State.  We may see continued rain and snow mixed in at times throughout the week.  

Tuesday afternoon and evening will be the most interesting time to watch for a possible snow event to develop.  It's too early to tell now but it's looking like the snow level may come all the way down to sea level and produce some accumulations.  Currently after that models are indicating a gradual warm up. However, our snow events have a tendency to linger on a bit past what the initial computer models indicate.  I will be keeping a close eye as these weather systems develop and issue any updates if needed.

Weather data for December 8th - 14th had a glitch for Sunday evening through Tuesday and as a result I lost all of the temperature data, however the rain data was still recorded correctly.

December 1st - 7th:
High temperature: 52.2ºF (Saturday the 1st)
Low temperature: 37.6ºF (Friday the 7th)
Rainiest day: 0.57 inches (Saturday the 1st)
Total rainfall: 2.13 inches
Warmest day: 47.3ºF (Saturday the 1st)
Coldest day: 42.1ºF (Friday the 7th)
Average temperature: 44.5ºF (6.1ºF above 3-year average)
3-Year average temperature: 38.4ºF

December 8th - 14th:
Rainiest day: 0.31 inches (Friday the 14th)
Total rainfall: 1.16 inches

Warmest and coldest days are based on average temperature of the entire day, starting at midnight. All other averages are based on the whole week, starting Saturday morning at midnight. All weather data unless otherwise noted is sourced from Carl's Shoreline Weather.
For fall and winter storm updates, check out my weather station web page or follow me on Twitter: @SWeatherWatcher


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