1 Katla produces basaltic magmas that typically do not cause explosive eruptions. 2  Many scientists attribute a layer of ash deposited in the North Atlantic and across Europe some 12,000 years ago to a massive eruption of Katla.
The annual average precipitation at Lacey is 50.79 Inches. Winter months tend to be wetter than summer months. The wettest month of the year is November with an average rainfall of 8.13 Inches. (OLYMPIA AP Weather station, 5.78 miles from Lacey)
Rain Stats. Seattle averages 37.49 inches of precipitation a year, with the vast majority falling as rain instead of snow. Official precipitation totals for the city are measured at Sea-Tac Airport, which is actually located south of the Seattle city limits.eattle had never seen a daily rainfall of 4 inches or more until Oct. 20, 2003, when a torrential 5.02 inches deluged the cityâsetting a new record for the wettest day in Seattle history.