Winter Storm Ready

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Weather in the Pacific Northwest can be tricky to navigate. That "mostly sunny" winter day can easily turn into a downpour, or even a slushy snowstorm with short notice, which is why we've created this Winter Storm Ready information page. The City has consolidated the information residents, business owners, and visitors need to safely navigate Mercer Island throughout winter storm season. FOR THE LATEST UPDATES ON CONDITIONS, SCROLL DOWN TO THE NEWS TAB BELOW.


Power Outages

Power outages can happen for a number of reasons, typically a fallen tree or too much snow/ice buildup on powerlines. The City does not own or manage these powerlines. Please call Puget Sound Energy (PSE) at 1-888-225-5773 to report outages and learn about service restoration. Customers can also view PSE's outage map with estimated power restoration times at www.pse.com/outage/outage-map. For more information, visit our article on Power Outages.

Excessive Rain and Increased Landslide Risk

Landslides develop during intense rainfall, runoff, or rapid snowmelt. The earth can move rapidly, sometimes with little or no warning. Mercer Island sees about 5-15 slides each year. To report a non-life-threatening landslide, call our regional, non-emergency 24-hour dispatch center (425) 577-5656. In the case of an emergency call 9-1-1. Visit our Landslide Safety article for more information.

Ice and Snow

The Public Works Department's goal is to provide sanding, plowing, and de-icing services on public streets when winter weather brings snow and ice, in order of priority.

In addition to plowing and sanding, crews often apply a pre-treatment of liquid deicer (see map) to other arterials located on steep hills and major intersections to help prevent minor ice build-up and make streets easier to plow. If compacted snow has already built up on the roadway, this deicer is less effective.

The City has six plows, three of which have sander units; one truck is used mostly for liquid de-icing. Follow this link for more information on the City's Snow and Ice Response Plan.

Your Resource for Up-to-Date Information and Safety Tips

During a major winter weather event, this page will be updated regularly with road closures/openings, City office and facility closures, safety tips, and more. Check back for updates or sign up to receive the Winter Weather E-Newsletter delivered straight to your inbox during weather event (see upper right-hand menu).


Weather in the Pacific Northwest can be tricky to navigate. That "mostly sunny" winter day can easily turn into a downpour, or even a slushy snowstorm with short notice, which is why we've created this Winter Storm Ready information page. The City has consolidated the information residents, business owners, and visitors need to safely navigate Mercer Island throughout winter storm season. FOR THE LATEST UPDATES ON CONDITIONS, SCROLL DOWN TO THE NEWS TAB BELOW.


Power Outages

Power outages can happen for a number of reasons, typically a fallen tree or too much snow/ice buildup on powerlines. The City does not own or manage these powerlines. Please call Puget Sound Energy (PSE) at 1-888-225-5773 to report outages and learn about service restoration. Customers can also view PSE's outage map with estimated power restoration times at www.pse.com/outage/outage-map. For more information, visit our article on Power Outages.

Excessive Rain and Increased Landslide Risk

Landslides develop during intense rainfall, runoff, or rapid snowmelt. The earth can move rapidly, sometimes with little or no warning. Mercer Island sees about 5-15 slides each year. To report a non-life-threatening landslide, call our regional, non-emergency 24-hour dispatch center (425) 577-5656. In the case of an emergency call 9-1-1. Visit our Landslide Safety article for more information.

Ice and Snow

The Public Works Department's goal is to provide sanding, plowing, and de-icing services on public streets when winter weather brings snow and ice, in order of priority.

In addition to plowing and sanding, crews often apply a pre-treatment of liquid deicer (see map) to other arterials located on steep hills and major intersections to help prevent minor ice build-up and make streets easier to plow. If compacted snow has already built up on the roadway, this deicer is less effective.

The City has six plows, three of which have sander units; one truck is used mostly for liquid de-icing. Follow this link for more information on the City's Snow and Ice Response Plan.

Your Resource for Up-to-Date Information and Safety Tips

During a major winter weather event, this page will be updated regularly with road closures/openings, City office and facility closures, safety tips, and more. Check back for updates or sign up to receive the Winter Weather E-Newsletter delivered straight to your inbox during weather event (see upper right-hand menu).

  • All Roads Are Open (January 15)

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    5 months ago
    As of 6:15am, no new snow overnight and no known road closures. Be aware that side streets may still be icy from yesterday. City crews are monitoring conditions and responding as needed. Gusty winds may build this afternoon, causing limited blowdown trees.

    Recolgy collections will be attempted for Wednesday customers, but “Limited Access Routes" (i.e. the smaller trucks for narrow/steep roads & driveways) may not be possible. Please leave uncollected carts at the curb until 6:00pm; after that time, customers should pull in their carts. Unserviced customers will be able to put out up to 2x the amount of material...

    As of 6:15am, no new snow overnight and no known road closures. Be aware that side streets may still be icy from yesterday. City crews are monitoring conditions and responding as needed. Gusty winds may build this afternoon, causing limited blowdown trees.

    Recolgy collections will be attempted for Wednesday customers, but “Limited Access Routes" (i.e. the smaller trucks for narrow/steep roads & driveways) may not be possible. Please leave uncollected carts at the curb until 6:00pm; after that time, customers should pull in their carts. Unserviced customers will be able to put out up to 2x the amount of material on their next scheduled collection day. Contact Recology with questions at: (206) 381-6980 - affected customers will also receive an automated call.

    MISD is operating on a 2-hour delay this morning.

    Useful winter tips, and updates for larger events, are posted here and on City social media.

  • Evening Update (January 14)

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    5 months ago

    The National Weather Service in Seattle has shared the latest *estimated* snow totals for the region. This may vary due to the uncertainty in this developing event.

    City crews are on site and will be working throughout the evening. Their priority remains on de-icing roads. If the Island sees significant snow or ice, crews are prepared to close streets if deemed unsafe (view the Likely Street Closures Map for more information).


    Be aware that wet roads from today will freeze and could be icy for the morning commute.

    Check WSDOT for current conditions on I-90 Wednesday morning.

    The National Weather Service in Seattle has shared the latest *estimated* snow totals for the region. This may vary due to the uncertainty in this developing event.

    City crews are on site and will be working throughout the evening. Their priority remains on de-icing roads. If the Island sees significant snow or ice, crews are prepared to close streets if deemed unsafe (view the Likely Street Closures Map for more information).


    Be aware that wet roads from today will freeze and could be icy for the morning commute.

    Check WSDOT for current conditions on I-90 Wednesday morning.

  • All Roads Are Open (January 14)

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    5 months ago
    As of 6:30am, there are no known road closures or other incidents to report on Mercer Island. City crews treated roads last night with deicer, and plows are out currently to address minor accumulations of snow on established plow routes.

    Due to the hard freeze, side roads are likely to be icy in places.

    Recology has implemented a 2-hour delay on compost/recycling/garbage collection this morning.

    Updates for larger snow events or closures will be posted here and on the City's social media sites.


    As of 6:30am, there are no known road closures or other incidents to report on Mercer Island. City crews treated roads last night with deicer, and plows are out currently to address minor accumulations of snow on established plow routes.

    Due to the hard freeze, side roads are likely to be icy in places.

    Recology has implemented a 2-hour delay on compost/recycling/garbage collection this morning.

    Updates for larger snow events or closures will be posted here and on the City's social media sites.


  • All Roads Are Open (January 13)

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    5 months ago

    Winter roads update: As of 7:00am, there are no road closures or other incidents to report. City plows were out overnight and kept up with minor snow accumulations on established plow routes. Watch for icy conditions tonight!

    Winter roads update: As of 7:00am, there are no road closures or other incidents to report. City plows were out overnight and kept up with minor snow accumulations on established plow routes. Watch for icy conditions tonight!

  • Prepared for Snow (January 12)

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    5 months ago

    Snow has started to fall in Eastside cities and Mercer Island crews are ready.

    Crews have been on site since late afternoon in anticipation of the weather.

    The City has six plows, three of which have sander units (one truck is used mostly for liquid de-icing). Top priority for Mercer Island crews will be primary routes that access I-90, schools and the Town Center, and other important arterials. When arterials are safe to travel, crews begin working next on residential streets. Crews also respond to snow and ice situations at the request of Mercer Island Police.

    For...

    Snow has started to fall in Eastside cities and Mercer Island crews are ready.

    Crews have been on site since late afternoon in anticipation of the weather.

    The City has six plows, three of which have sander units (one truck is used mostly for liquid de-icing). Top priority for Mercer Island crews will be primary routes that access I-90, schools and the Town Center, and other important arterials. When arterials are safe to travel, crews begin working next on residential streets. Crews also respond to snow and ice situations at the request of Mercer Island Police.

    For more information about the City's snow and ice response plan, click here.

    To report a snow/ice problem, or request sanding/deicing after a storm, please use the City's online service request portal MI-Connect (or download the app). This pushes requests directly into the workflow queue for City field crews.

    Check back regularly for more information.

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    • Registered for an event at the Community Center? Click here for the MICEC's inclement weather policy.


    • Looking for information about how to stay safe on the road when it snows? Click here for winter driving tips.

    • Do your students attend Mercer Island schools? Visit the MISD Facebook page for information how to sign up for FlashAlert for the latest info on possible closures and delays.