Nouvelles du volcan Kilauea
Kilauea volcano update: Lava flows continue to advance, evacuations possible within days
dimanche oct. 26, 2014 09:50 | AUTEUR : T
The June 27th lava flow crossed Apaʻa Street / Cemetery Road at 3:50 AM, HST, Saturday morning, October 25, 2014. In this photo, which was taken at about 9 AM Saturday, the flow is moving from right to left, with burning asphalt visible along it's NW margin. A utility pole, far right, was surrounded by lava but remained standing at the time of the photo. The hope is that the protective insulation and cinder/cement barrier around the pole will prevent it from burning through. (image: HVO)
The June 27th lava flow advances across the pasture between the Pāhoa cemetery and Apaʻa Street, surrounding a barbed wire fence. (image: HVO)
Lava has crossed the Apaʻa Street / Cemetery Road near the driveway to the Pāhoa cemetery and is now spreading mainly over open grassland.
A typical portion of the pāhoehoe flow margin near the flow front, just downslope of Cemetery Rd./Apaʻa St. The horizontal incandescent cracks seen in the center and right portions of the photo indicate that the flow was inflating. Pāhoehoe inflation is driven by continued supply of lava beneath the surface crust, which slowly raises the surface. (image: HVO)
Between 40 and 50 households could be evacuated within the next few days, as soon as Tuesday, if the lava continues to advance at current rates (approx. 250 m per day) and follows the most likely paths.
The lava flow front, approx. 70 m wide, is headed northeast and only 1 km straight line distance from Pahoa Village Road,” he said. The best guess of HVO is that the lava might cross Pahoa Village Road a little bit west of the Pahoa Post Office.
The Hawaii Electric Light Company is trying to protect their wooden utility poles by encasing them with concrete, and thus, preventing the lava to burn it, but rather flow around them. So far, one pole engulfed in the lava flows have survived, but as the flows inflate, their fate might be different.
HVO's latest update:
"Earlier that morning, at about 3:50 AM, HST, the narrow finger that had been moving rapidly downslope reached and crossed Apaʻa Street / Cemetery Road near the driveway to the Pāhoa cemetery. The lobe located to the southeast of the narrow finger, described in yesterday’s status report, is no longer advancing.
"Over the course of yesterday, the advance rate of the narrow finger varied between 10 and 15 m/hr (11 to 16 yd/hr)—that’s equivalent to 240–360 m/day (260–390 yd/day). Through the morning, the flow moved downslope along the cemetery driveway before veering to the southeast into the adjoining pasture in the early afternoon.
"As of 5 PM, the flow was about 90 m (100 yd) above the cemetery and 160 m (175 yd) downslope of Apaʻa Street, and it had an average width of about 40 m (45 yd).
"The pasture between Apaʻa Street and the cemetery is characterized by gentle topography, but the slopes increase at or just below the cemetery. If the flow reaches this point, its advance rate may increase.
"The pasture is located between two of the steepest decent paths plotted on HVO’s lava flow maps, and it is unclear at this point which path the flow will follow. Both paths, however, join just below the cemetery, so the overall flow path leading to Pāhoa Village Road is unchanged."
samedi, oct. 25, 2014
The lava flows have now crossed the Apa'a Street and thus, formally, entered the area of the village of Pahoa. ... [details]
vendredi, oct. 24, 2014
The lava flow continues to advance towards Pahoa and might cut the first road very soon. During an overflight on 22 Oct, the most advanced front of the 27 June flow, a narrow lobe, was only approx. 480 m away from the Apa'a road. ... [details]
vendredi, oct. 17, 2014
The June 27th lava flow advancement has slowed, with the leading edge of the flow moving only a few tens of meters (yards) over the past two days. ... [details]
mardi, sept. 30, 2014
Following several days of increased pressure at Kilauea's summit, lava activity is picking up on the June 27th flow with new flows continuing to move to the north, on a pathway leading slightly away from the town of Pāhoa for now. ... [details]
jeudi, sept. 25, 2014
In the past few days, the front of the lava flow heading towards Pahoa has stalled its forward progress. There is still lava activity at a decreased level, but this is only widening the lava field instead of advancing further. ... [details]