| (1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
| (2) Issued: | (20090625/2200Z) |
| (3) Volcano: | Cleveland (CAVW# 1101-24-) |
| (4) Current Color Code: | ORANGE |
| (5) Previous Color Code: | |
| (6) Source: | Alaska Volcano Observatory |
| (7) Notice Number: | 2009/A39 |
| (8) Volcano Location: | N 52 deg 49 min W 169 deg 56 min |
| (9) Area: | Aleutians Alaska |
| (10) Summit Elevation: | 5676 ft (1730 m) |
| (11) Volcanic Activity Summary: | A small eruption at Cleveland volcano occurred today and AVO is raising the Aviation Color Code to Orange and the Alert Level to Watch. An ash plume from the volcano was seen in satellite images from 1915 UTC (11:15 AKDT) today. The plume has detached from the volcano is moving south. Estimated plume height is less than 15,000 ft. above sea level. |
| (12) Volcanic cloud height: | Unknown |
| (13) Other volcanic cloud information: | Unknown |
| (14) Remarks: | Cleveland volcano forms the western half of Chuginadak Island, a remote and uninhabited island in the east central Aleutians. It is located about about 75 km (45 mi.) west of the community of Nikolski, and 1500 km (940 mi.) southwest of Anchorage. The volcano's most recent significant eruption began in February, 2001 and had 3 explosive events that produced ash clouds as high as 12 km (39,000 ft) above sea level. This eruption also produced a rubbly lava flow and hot avalanche that reached the sea. The most recent minor ash emissions were observed in January 2009. |
| (15) Contacts: | Tom Murray, Scientist-in-Charge, USGS tlmurray@usgs.gov (907) 786-7497 Steve McNutt, Coordinating Scientist, UAF steve@giseis.alaska.edu (907) 474-7131 |
| (16) Next Notice: | A new VONA will be issued if conditions change significantly or alert levels are modified. While a VONA is in effect, regularly scheduled updates are posted at http://www.avo.alaska.edu |
