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If you are late on your rent, the landlord only has to give you a 3 day notice to pay rent or vacate. Wash. Rev. Code Ann. § 59.12.030(3). If you didn't pay the rent, then the landlord would still have to file a formal eviction action in the local courts to get a judgment and a writ that the sheriff would execute to force you to vacate.
This takes 3-4 weeks longer depending on the court's schedule. So the landlord can't force you to leave even after giving you a 3 day without going through the the full court eviction process.
A 30 day notice is only required to terminate your tenancy if you aren't in breach of the lease or late on the rent and the landlord just wants to end the rental contract.