(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA) | |
(2) Issued: | (20200602/0746Z) |
(3) Volcano: | Cleveland (VNUM #311240) |
(4) Current Color Code: | ORANGE |
(5) Previous Color Code: | UNASSIGNED |
(6) Source: | Alaska Volcano Observatory |
(7) Notice Number: | |
(8) Volcano Location: | N 52 deg 49 min W 169 deg 56 min |
(9) Area: | Aleutians |
(10) Summit Elevation: | 5676 ft (1730 m) |
(11) Volcanic Activity Summary: | Regional infrasound sensors recorded a small explosion today at about 06:32 UTC (10:32 AKST). No other significant activity was detected and local monitoring stations are offline. A small ash plume was observed at 22,000 ft drifting to the south. Explosions from Cleveland typically produce relatively small volcanic ash clouds that dissipate within hours; however, more significant ash emissions are possible. Cleveland volcano is monitored with a limited real-time seismic network, which inhibits AVO's ability to detect precursory unrest that may lead to an explosive eruption. Rapid detection of an ash-producing eruption may be possible using a combination of seismic, infrasound, lightning, and satellite data. |
(12) Volcanic cloud height: | 22,000 ft |
(13) Other volcanic cloud information: | Drifting to the south |
(14) Remarks: | |
(15) Contacts: | Michelle Coombs, Scientist-in-Charge, USGS mcoombs@usgs.gov (907) 786-7497 David Fee, Coordinating Scientist, UAFGI dfee1@alaska.edu (907) 322-4085 |
(16) Next Notice: |
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