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    September 2014
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Another Lava Flow Update This Evening From USGS – Video of Flow

Between September 6 and 10, the June 27th flow advanced north then northeastward at an average rate of 400 m/d (0.25 mi/d).

Click to view movie

This Quicktime movie provides an overview of activity near the front of the June 27th lava flow, and shows the position of the flow front relative to Kaohe Homesteads and Pahoa.

In this way, the flow had advanced approximately 14.5 km (9.0 miles straight-line distance) from the vent, or to within 0.6 km (0.4 miles) of the eastern boundary of the Wao Kele o Puna Forest Reserve, by the afternoon of September 10. At the average rate of advancement of 400 m/day (0.25 mi/day) since September 6, we project that lava could flow from its current location to the northwest edge of Kaohe Homesteads in 1.5 days and to the Pāhoa Village road (government road) in Pāhoa within 14-16 days if lava is not further confined within the cracks and down-dropped blocks within the East Rift Zone of Kīlauea volcano. These estimates will be continually refined as we track this lava flow.

Click to enlarge

Click to enlarge

Kaohe Homesteads is located between the Wao Kele o Puna Forest Reserve and the town of Pāhoa in the Puna District of the County of Hawai`i.

Recent Observations: Lava flow turned to the northeast and is advancing at a rate of 400 m/day (0.25 mi/day).

Hazard Analysis: Lava Flow from Pu‘u ‘Ō‘ō vent could reach the northwest edge of Kaohe Homesteads in 1.5 days and the government road in Pāhoa within 14-16 days.

Remarks: The Pu‘u ‘Ō‘ō vent in the East Rift Zone of Kīlauea Volcano began erupting on January 3, 1983, and has continued erupting for more than 31 years, with the majority of lava flows advancing to the south. Over the past two years, lava flows have issued from the vent toward the northeast. The June 27th flow is the most recent of these flows and the first to threaten a residential area since 2010-2011. On June 27, 2014, new vents opened on the northeast flank of the Pu‘u ‘O‘o cone that fed a narrow lava flow to the east-northeast. On August 18, the flow entered a ground crack, traveled underground for several days, then resurfaced to form a small lava pad. The sequence was repeated three more times over the following days with lava entering and filling other cracks before reappearing at the surface, in two of the cases farther downslope. Lava emerged from the last crack on September 6 and moved as a surface flow to the northeast.

Lava Flow Moves Closer to Pahoa and Highway 130

The June 27th lava flow remained active Wednesday afternoon, September 10, 2014, with the most distal flow front 14.5 km (9.0 mi; straight-line distance) from the vent on the northeast flank of the Puʻu ʻŌʻō cone, which is visible in the far background.

Click to enlarge

Over the past day, the flow front direction shifted from a north trend to a more northeast trend, bringing the flow closer to the Forest Reserve boundary. The flow continued to advance through thick forest, creating smoke plumes as it engulfed trees and other vegetation. The smell of smoke has been detected far downwind of the flow, but fires are not spreading beyond the margin of the flow. Small, sluggish breakouts of lava (smoke plumes in far distance) also remain active closer to Puʻu ʻŌʻō, roughly midway along the length of the June 27th flow.

View from above the end of the June 27th lava flow, looking along its northeast trend through the Wao Kele o Puna Forest Reserve.

On the afternoon of September 10, 2014, the flow front was 0.6 km (0.4 mi) from the boundary between the Forest Reserve and Kaohe Homesteads, visible at far right. Click to enlarge

Smoke plumes indicate the location of the June 27th lava flow, which was 0.6 km (0.4 mi) from the edge of Kaohe Homesteads, visible in foreground, on September 10. The flow was advancing toward the northeast.

Lava Flow Maps Updated – Flow Widens and Advances

This small-scale map shows the June 27th flow in Kīlauea’s East Rift Zone on September 10, 2014.

Click to Enlarge

Click to Enlarge

The area of the flow on September 8, 2014, at 12:45 PM is shown in pink, while widening and advancement of the flow as mapped on September 10 at 2:45 PM is shown in red. The front of the active flow was 14.5 km (9.0 miles; straight-line distance) from the vent and 0.6 km (0.4 miles) from the east boundary of the Wao Kele o Puna Forest Reserve. The actual length of the flow, measured along the lava tube axis (so that bends in the flow are considered) is 16.6 km (10.3 miles). The flow was advancing toward the northeast. The blue lines show down-slope paths calculated from a 1983 digital elevation model (DEM). For an explanation of down-slope path calculations, see: http://pubs.usgs.gov/of/2007/1264/. All older Puʻu ʻŌʻō lava flows (1983–2014) are shown in gray; the yellow line marks the lava tube.

This large-scale map shows the distal part of the June 27th flow in relation to nearby Puna communities.

Click to enlarge

Click to enlarge

The black dots mark the flow front on specific dates. The latitude and longitude of the flow front on September 8 was 19.460895/-154.986613 (Decimal degrees; WGS84). The blue lines show down-slope paths calculated from a 1983 digital elevation model (DEM; for calculation details, see http://pubs.usgs.gov/of/2007/1264/).

Aerial Images of Puna Lava Flow Emerge

Here is an aerial image of the Puna Lava Flow on September 5th:

Click to enlarge

All images courtesy of Resource Mapping Hawaii. Click to enlarge

Here’s an aerial view showing Puna Lava Flow moving northwards from Sept 5 to 7 provide by Resource Mapping Hawaii:

Click to enlarge

Click to enlarge

This image was taken on Septemer 7, 2014:

Aerial image flow 2

Today is the 10th.  When I get access to the updated images I’ll post that.

Albizia Tree Presentation at UH Hilo

The University of Hawaiʻi at Hilo Faculty Congress and the College of Continuing Education and Community Service (CCECS) invite the public to a free presentation on the invasive Albizia trees. The presentation will be held on Wednesday, September 17, from 6:30-7:30 p.m. in the University Classroom Building (UCB) Room 100.

Workers clear Albizia trees from a road following Hurricane Iselle.

Workers clear Albizia trees from a road following Hurricane Iselle.

“The fast-growing Albizia trees have had a serious ecological impact on native forests,” said Springer Kaye, Big Island Invasive Species Committee (BIISC) Manager. “They also pose a real and immediate threat to the public’s safety and welfare as we saw in the aftermath of Tropical Storm Iselle.”

Kaye and Dr. Flint Hughes, research ecologist, of the USDA Forest Service Institute for Pacific Islands Forestry, will discuss community-based efforts involving State and local agencies, lawmakers, Hawai’i Electric Light Company, and other stakeholders to remove hazardous trees, and deploy field staff and volunteers to manage non-hazardous trees. Other topics of discussion include lessons learned and future steps to achieve long-term hazard mitigation.

Parking on the UH Hilo campus is free after 4 p.m. A map of the campus can be found online at http://hilo.hawaii.edu/uhh/maps.php.

For more information, call 974-7664 or email ccecs@hawaii.edu. For disability accommodations, call (808) 974-7664 (V) or (808) 932-7002 (TTY).

Civil Defense Update on Eruption and Lava Flow

This is a civil defense message.

Civildefense

This is an Eruption and Lava Flow Information Update for Wednesday September 10th at 8:15 AM.

This morning’s assessment shows the surface lava flow continues and is moving in a north/northeast direction.  There is no wildfire threat at this time.  Weather and fire conditions are being monitored closely.  Due to a light inversion this morning smoke conditions in the area were moderate.

Photo of the flow from the top of my Mattson container at 8:45 this morning.

Photo of the flow from the top of my Mattson container at 8:45 this morning.

The surface flow has advanced approximately 250 yards since yesterday.  The surface flow is moving slowly and does not pose an immediate threat to area residents.  The surface flow is located approximately .6 miles southwest or upslope of the Wao Kele Puna Forest Reserve boundary and moving in a north/northeast direction and parallel to the forest reserve boundary.

Presently, the current activities and flow does not present with an immediate or imminent threat to area communities.  No evacuation is required at this time.  Eruption activity will continue to be monitored and additional updates will be provided.

Although the current flow activity does not pose an immediate threat to area communities, residents are encouraged to continue to review their emergency plans in the event conditions change and should an evacuation be necessary.

The public is reminded that the flow cannot be accessed and is not visible from any public areas.  Access to the Kaohe Homesteads subdivision will be restricted and limited to subdivision residents only.

Wordless Wednesday – As The Lava Approaches My House

Lava Flow 910