SEATTLE, May 15 (Reuters) - Washington state Governor Jay Inslee declared a statewide drought emergency on Friday, saying drought conditions caused by a lack of snowpack are the most serious in over a decade.

In a announcement in the capital, Olympia, Inslee said the drought had "deepened dramatically in the last few weeks," with conditions expected to worsen as the hot summer months approach.

(Reporting by Victoria Cavaliere; Editing by Cynthia Johnston)