Mt. Redoubt Begins Erupting - UPDATED

From the Alaska Volcano Observatory at 2305:18 tonight:

An eruption is occurring. We will post more information as we interpret the data.

The ash cloud is over 20,000 feet high, is drifting toward upper Cook Inlet and the Susitna Valley.

Update - 0200 Monday:

Three eruptions since 10:30 p.m. Sunday

THE NATIONAL WEATHER SERVICE IN ANCHORAGE HAS ISSUED AN ASHFALL
ADVISORY...WHICH IS IN EFFECT UNTIL 4 AM AKDT MONDAY.

REDOUBT VOLCANO AT 60.5N 152.7W HAS ERUPTED AT AROUND 1040 PM
AKDT. VOLCANIC ASH IS FALLING AND IS EXPECTED TO REACH THE SURFACE
ACROSS THE SUSITNA VALLEY. PRELIMINARY INDICATIONS ARE THAT
ASHFALL WILL BE VERY LIGHT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

AN ASHFALL ADVISORY MEANS THAT ASH WILL BE DEPOSITED IN THE
ADVISORY AREA. PEOPLE IN AREAS OF ASHFALL SHOULD SEAL WINDOWS AND
DOORS. PROTECT ELECTRONICS AND COVER AIR INTAKES AND OPEN WATER
SUPPLIES. MINIMIZE DRIVING. LISTEN TO YOUR RADIO STATION FOR
FURTHER INFORMATION.