Summer kicks off Friday with a soggy start for much of Southern and parts of Central Alberta, as a Pacific low-pressure system brings heavy rainfall. Light showers began Friday morning and are expected to intensify, with steady rain spreading from the Foothills into the broader region by evening. The heaviest downpours are forecast for Saturday, with rainfall rates possibly exceeding 10mm per hour, pushing totals to 50-100mm by Sunday morning. Some are comparing the setup to the devastating floods of June 2013.