November 19th - 25th: Weekly highlights and full data.

November 19th - 25th:
 
Highlights:
-Cold weather for the start, heavy rain for the remainder, and most of the week.
-Rain: 5.81 inches of rainfall! 3.79 inches of rain fell from Monday at 6am through Wednesday at 6am, (in 48 hours!)
-Wind: Tuesday early morning wind gusting up to 31 MPH, Thanksgiving day we had wind gusts to 34 MPH.  Wind data from the Home Education Exchange center, formally known as North City Elementary.

The data:
High temperature: 51.8°F (Wednesday)
Low temperature: 25.2°F (Sunday)
Rainiest day: 2.78 inches (Tuesday)
Total rainfall: 5.81 inches
Warmest day: 44.3°F (Tuesday)
Coldest day: 31.6°F (Sunday)
Average temperature this week: 38.8°F

High humidity: 100%
Low humidity: 70% (Friday)
High pressure: 29.914 inHg (Friday)
Low pressure: 28.851 inHg (Wednesday)
Average pressure: 29.271 inHg
Average humidity: 97%
Barometric shift: 1.063 inHg

Average daily temperature for November 2011 so far, compared to November 2010.

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.   All weather data unless otherwise noted is sourced from Carl's Shoreline Weather Station.
 

November 22nd 2011 wind event.

National weather service canceled the wind advisory at 12:52AM.  We still had some pretty moderate winds, and there was a couple of scattered power outages.  The Home Education Exchange weather station (North City Elementary) recorded a peak gust of 31 mph.  Winds peaked between 2:30 AM and 5:30 AM.  Now we have a heavy rain storm with flood watches and warnings in effect for the surrounding areas.

Another wind storm may blow through on Thanksgiving day.

NWS (National Weather Service) has issued a wind advisory for the greater Seattle area.

Monday November 21st, 2011 at 4:54 PM The National Weather Service in Seattle has issued a wind advisory for the area that includes Shoreline and Lake Forest Park.  The wind advisory is in effect from 7 PM this evening to 12 PM (Noon) Tuesday.

-Wind: South wind 20 to 30 MPH with gusts to 50 MPH.
-Timing: This evening through Noon Tuesday.  Winds are expected to peak from 10:00 PM tonight to 7:00 AM Tuesday morning.
-Impacts: Winds tonight through Tuesday morning could topple small trees or cause local power outages.

A wind advisory is issued when sustained winds of 30 to 39 MPH or gusts of 45 to 57 MPH are likely.  Winds this strong can snap small tree branches, topple small or shallow rooted trees and cause local power outages.

Snow in Everett.

Snowing in Everett Washington.  Accumulated amounts are spotty dustings.

Wintery Weather note.

Some hail and snow mixed in with rain tonight as a classic Puget Sound Convergence zone developed over the King/Snohomish County border.   The event continues, occasionally mixing with snow/hail and back to rain.   Temperatures are continuing to drop slowly at about the rate of -0.5°F/hour.  Currently it is 36.7°F in Shoreline.

Arctic air mass on the way this week.

Cold Arctic air has been building in Northern Canada and the Arctic for the past few weeks.  Forecast models appear to indicate now that this mass is going to head our way.   This could lead to our first significant lowland snow event for the entire Puget Sound region.   The cold air is expected to arrive on Friday November 18th, 2011.

New weather station server

The weather station got a server upgrade tonight.  About an hour and a half of false data starting at 9:45 lasting until about 11:15pm.  I had some issues with the software as I transferred it from a Windows 2000 Professional operating system to a Windows XP professional operating system.  The reason for the upgrade is due to anti-virus software no longer being supported widely for Windows 2000 Professional.

The new system is an Athlon 2400, with 2Gb of DDR2 ram with a 160Gb PATA harddrive running Windows XP Professional.  The station software is still Weather-Display however it is now the latest version of Weather-Display.  The new server should be more reliable with less reboots and down times than the old server.  It is also running an operating system that is more widely supported than the previous operating system.