Heavy rainfall has been forecast from 6 pm on Tuesday (5th April) until 6 pm on Wednesday.
Widespread rainfall totals of over 100 mm are expected in the north of the area through this period, with possible point maximums of 150 mm. Elsewhere in Argyll and Bute, rainfall will be heavy but not extreme.
Rivers in the north of Argyll may be at risk of flooding. The peak flood risk will be overnight and into Wednesday morning.
There is a risk of flooding from rapid surface water runoff, small watercourses and blocked culverts.
High confidence in the rainfall forecast, though most of it is expected to fall further north, into Lochaber. The southern limit of the extreme rainfall is expected to be around Oban at the moment, though all areas will experience high totals.