WeatherWatcher: New snow threat, forecast, last week's data

Forecast: There's a new chance of snow Tuesday morning. I know this is short notice but models were not picking this up until this afternoon. Most of the snow is expected to remain south of Seattle, however, so Shoreline and Lake Forest Park are likely to only see cold air again, with maybe a dusting to one inch of snow. This is not a big enough threat to prompt any weather watches or warnings at this time for our area.

After Tuesday morning's showers and arctic push, expect to see clearing skies and cold temperatures to last us through Friday. Highs are expected to be in the low to mid 30's and lows in the mid to low 20's. Just a little warmer than it was last week.

Friday night into next weekend a new storm system is moving in, but I can't call it right now on whether it will be a snow event or rain event. All indications right now are saying a slight warm up and rain, but temperatures are expected to still be in the mid-30's.

Here's our daily high and low temperatures graphed compared to the station's average:

We've been much drier than normal as a result of these arctic high pressure systems. We've had one day of rain so far (not including Monday as I write this) and about 3/4 inch of snow accumulation New Year's Day.

Last week's data:

High temperature: 37.2°F (Saturday December 31st)

Low temperature: 18.9°F (Thursday January 5th)

Rainiest day: 0.10 inches (Saturday December 31st)

Total rainfall: 0.10 inches

Total snow accumulation: 0.75 inches

Warmest day: 33.9°F (Saturday December 31st)

Coldest day: 25.8°F (Thursday January 5th)

Average temperature: 29.2°F (Normal average is 38.7°F) 9.5°F colder than normal.

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