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Whatcom County coastal areas warned to be prepared for potential coastal flooding, again

Scene of coastal flooding in the Birch Bay area during a 12.3-foot King Tide (December 27, 2022). Photo: Whatcom News

WHATCOM COUNTY, Wash. — Officials with Whatcom County Sheriff’s Office Divison of Emergency Management issued the following press release Wednesday, January 18th, regarding concerns over potential coastal flooding between January 21st and 26th during the last king tides of the season.

Whatcom County is facing the last significant King Tide cycle for this winter beginning Saturday, January 21, 2023, and continuing through Thursday, January 26, 2023. King Tides occur in the late fall and early winter. Many times these coincide with and can be aggravated by wind storms and atmospheric pressure. King Tides, with accompanying storms, can have significant impacts on coastal communities.

When a westerly storm is added to a King Tide as happened in 2018, 2021, and most recently during the December 2022 storms, the tides can be pushed nearly two feet higher from the storm surge. With strong winds, waves can grow another three to four feet. It is for these reasons that Whatcom County Sheriff’s Office Divison of Emergency Management (WCSO DEM) and the National Oceanic and Atmospheric Administration (NOAA) have identified the following days as ones to watch for coastal flooding:

DateDayTimeHeight
January 21, 2023Sat06:21 AM10.52
January 22, 2023Sun06:57 AM10.69
January 23, 2023Mon07:31 AM10.72
January 24, 2023Tue08:03 AM10.66
January 25, 2023Wed08:34 AM10.53
January 26, 2023Thu09:03 AM10.31
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For each of these dates, NOAA prepares a custom report for Whatcom County. This report is sent to the DEM who then notifies the Whatcom County Coastal Warning Group made up of key officials, public safety agencies, and organizations subject to coastal impacts (such as refineries, hotels, community groups and industry). A specific forecast for Point Roberts, Blaine, Birch Bay, and Sandy Point is also produced by the National Weather Service the day before each high tide so that local mitigation actions can be taken should conditions appear to forecast localized coastal flooding.

Because the variable is overlaying weather systems which can only be confidently forecast 12-24 hours before the high tide, residents of Whatcom County should be preparing for potential coastal flooding during January 21-26, 2023. The following sites can aid in awareness and preparedness:

The DEM will be monitoring the forecasts and issuing updates as needed as well as posting to the Whatcom County Sheriff’s Office Facebook page. Forms for submitting damage estimates will be made available if necessary. It is important to understand that reporting damages is the first step in the recovery process and may, or may not, lead to State or Federal financial aid.

Whatcom County Sheriff’s Office Divison of Emergency Management (January 18, 2023)
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