(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued:	(20080726/2001Z)
(3) Volcano:	Okmok (VNUM #311290)
(4) Current Color Code:	ORANGE
(5) Previous Color Code:	RED
(6) Source:	Alaska Volcano Observatory
(7) Notice Number:	2008/A16
(8) Volcano Location:	N 53 deg 23 min W 168 deg 9 min
(9) Area:	Aleutians
(10) Summit Elevation:	3520 ft (1073 m)
(11) Volcanic Activity Summary:	The amplitude and duration of seismic activity has decreased over the last five hours. Satellite data indicate ash is rising to 20,000 to 22,000 feet. Based on these observations AVO is decreasing the aviation color code at Okmok volcano to ORANGE, and the alert level to WATCH.
(12) Volcanic cloud height:
(13) Other volcanic cloud information:
(14) Remarks:	Please see http://www.avo.alaska.edu/activity/Okmok.php for more information. The nearest settlements are Nikolski, population about 35, roughly 45 miles west of the volcano, and a small number of people at the abandoned Fort Glenn military base 10 miles east of the volcano.
(15) Contacts:	John Power, Acting Scientist-in-Charge, USGS jpower@usgs.gov, (907)786-7497 Steve McNutt, Coordinating Scientist, UAFGI steve@giseis.alaska.edu (907)978-5458
(16) Next Notice:	A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http://www.avo.alaska.edu

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AVO/USGS Volcanic Activity Notice

Volcano: Okmok (VNUM #311290)

Current Volcano Alert Level: WATCH
Previous Volcano Alert Level: WARNING

Current Aviation Color Code: ORANGE
Previous Aviation Color Code: RED

Issued: Saturday, July 26, 2008, 12:01 PM AKDT
Source: Alaska Volcano Observatory
Notice Number: 2008/A16
Location: N 53 deg 23 min W 168 deg 9 min
Elevation: 3520 ft (1073 m)
Area: Aleutians

Volcanic Activity Summary: The amplitude and duration of seismic activity has decreased over the last five hours. Satellite data indicate ash is rising to 20,000 to 22,000 feet. Based on these observations AVO is decreasing the aviation color code at Okmok volcano to ORANGE, and the alert level to WATCH.

Remarks: Please see http://www.avo.alaska.edu/activity/Okmok.php for more information.

The nearest settlements are Nikolski, population about 35, roughly 45 miles west of the volcano, and a small number of people at the abandoned Fort Glenn military base 10 miles east of the volcano.

Contacts: John Power, Acting Scientist-in-Charge, USGS
jpower@usgs.gov, (907)786-7497

Steve McNutt, Coordinating Scientist, UAFGI
steve@giseis.alaska.edu (907)978-5458

Next Notice: A new VAN will be issued if conditions change significantly or alert levels are modified. While a VAN is in effect, regularly scheduled updates are posted at http://www.avo.alaska.edu

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