|(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)|
|(3) Volcano:||Kilauea (CAVW# 1302-01-)|
|(4) Current Color Code:||ORANGE|
|(5) Previous Color Code:||orange|
|(6) Source:||Hawaiian Volcano Observatory|
|(7) Notice Number:||2011/H3|
|(8) Volcano Location:||N 19 deg 25 min W 155 deg 17 min|
|(9) Area:||HI Hawaii and Pacific Ocean|
|(10) Summit Elevation:||4091 ft (1247 m)|
|(11) Volcanic Activity Summary:||The eruption on Kīlauea volcano's east rift zone continued throughout the day at the western end of the 2.3 km (1.4 mi) long Kamoamoa fissure located between Pu'u 'Ō'ō and Nāpau Crater. Lava spatter erupted from the active fissure reached as high as 50 m (160 ft), but more typically reached heights of 30-40 m (100-130 ft).|
Lava erupted from the western end of the fissure, which is near the eastern rim of Nāpau Crater, has formed a channelized 'a'ā flow that extends 2.9 km (1.8 mi) to the southwest. The lava flow ranges from 80 to 290 m (260 to 950 ft) wide, but the active channel within the flow is only about 20 m (65 ft) wide.
HVO scientists installed a new Webcam-Kamoamoa Eruption, West Fissure-this afternoon. These Webcam images of the western end of the fissure can be accessed at http://volcanoes.usgs.gov/hvo/cams/.
Gas measurements today show an SO2 emission rate of about 4,400 tonnes/day, significantly lower than the 10,000 tonnes/day emission rates measured on March 6-8, but still elevated above the 300 tonnes/day measured during the past several months (prior to March 5).
Pu'u 'Ō'ō and the TEB vent downrift (ENE) of Pu'u 'Ō'ō remain inactive today.
Summit SO2 emissions today were around 500 tonnes/day.
Seismic tremor has declined, but remains elevated above pre-Kamoamoa eruption levels at both Kīlauea's summit and east rift zone.
Deflation continues to slow at both the summit and east rift zone.
At Kīlauea's summit, the lava lake within the Halema'uma'u Crater vent is estimated to be about 220 m below the crater floor based on visual observations this morning.
|(12) Volcanic cloud height:||Unknown|
|(13) Other volcanic cloud information:||Unknown|
|(14) Contacts:||HVO media contact|
|(15) 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://hvo.wr.usgs.gov|