Page 2 of 3 FirstFirst 123 LastLast
Results 31 to 60 of 79

Thread: Lava flow threatens Pahoa, HI

  1. #31
    Join Date
    Feb 2005
    Posts
    11,594
    Maybe erecting some chain link fences isn't such a bad idea.

  2. #32
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    The active branch of the Jun 27 flow had been somewhat stalled for a few days in a flat area but now seems to have advanced considerably in the past couple of days. It's following the northeasterly path toward Pahoa Market Place, now 1.6 miles away, rather than the more northerly path. Neither, of course, is good.
    http://hvo.wr.usgs.gov/maps/uploads/image-207.jpg
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  3. #33
    Join Date
    Sep 2005
    Location
    Texas
    Posts
    335
    Quote Originally Posted by publiusr View Post
    Maybe erecting some chain link fences isn't such a bad idea.
    What?

    They haven't fenced off any hazardous areas yet?

    Not gonna end well...

    Shadilay

  4. #34
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    The active branch of the flow is now down to about 1.0 mile from Pahoa Market Place.

    This map is a day old so shows it slightly farther.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  5. #35
    Join Date
    Sep 2007
    Posts
    16,250
    I referenced this event in my Earth Science final today.

  6. #36
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Now down to about 1.0km/0.6mi from Pahoa Marketplace.

    ETA: Another 150 meters since that post.

    Edited again: Pahoa actually made the TV news this morning, first time in quite a while. They said at the current rate, the flow is about six days from Pahoa Marketplace.
    Last edited by Trebuchet; 2014-Dec-21 at 03:54 PM. Reason: Additional information
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  7. #37
    Join Date
    Jun 2002
    Posts
    1,989

  8. #38
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    I keep wondering why they don't dig a large ditch, with a berm on the downslope side, to try to steer the flow away from infrastructure. There's been time. Modern machinery can move a LOT of earth very quickly.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  9. #39
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    The latest "finger" of lava approaching Pahoa Marketplace appears to have stalled.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  10. #40
    Join Date
    Oct 2006
    Location
    R.I. USA
    Posts
    10,014
    Quote Originally Posted by Trebuchet View Post
    I keep wondering why they don't dig a large ditch, with a berm on the downslope side, to try to steer the flow away from infrastructure. There's been time. Modern machinery can move a LOT of earth very quickly.
    I "Think " that they have some laws in place concerning the alteration and manipulation of lava flows on Hawaii.
    But it would have made sense. Hmmm.....

  11. #41
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Quote Originally Posted by danscope View Post
    I "Think " that they have some laws in place concerning the alteration and manipulation of lava flows on Hawaii.
    But it would have made sense. Hmmm.....
    I didn't find anything regarding laws. I did find that previous attempts to divert flows in Hawai'i have not been successful, although better luck has been had in Iceland and Italy.

    Meanwhile, the flow tip has resumed a slow advance, some 24 meters since Friday.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  12. #42
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Looks like it may be picking up speed. 37m advance since yesterday.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  13. #43
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Quote Originally Posted by Squink View Post
    Bumping those links. Lava is on the move, getting close to Pahoa Marketplace. Interesting to see in the photos that when crossing the firebreak road, the lava spread out in both directions along the road. This reinforces my notion that digging a ditch might actually be of some use.
    Last edited by Trebuchet; 2014-Dec-31 at 07:17 PM.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  14. #44
    Join Date
    Jun 2002
    Posts
    1,989
    What is Pahoa Marketplace?:
    Pahoa Marketplace, opened in 2004, was the first shopping center built at the crossroads where the Pahoa Bypass diverges from the former highway that runs through downtown Pahoa,. The center houses Malama Market, the area’s largest supermarket; Lex Brody Tires, and a number of boutique shops. Across the street, a newer shopping center houses Long’s Drugs and other businesses. Since the two centers were built, a smaller downtown grocery and all of pharmacies in downtown Pahoa have closed.

  15. #45
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Quote Originally Posted by Squink View Post
    What is Pahoa Marketplace?:
    Pahoa Marketplace, opened in 2004, was the first shopping center built at the crossroads where the Pahoa Bypass diverges from the former highway that runs through downtown Pahoa,. The center houses Malama Market, the area’s largest supermarket; Lex Brody Tires, and a number of boutique shops. Across the street, a newer shopping center houses Long’s Drugs and other businesses. Since the two centers were built, a smaller downtown grocery and all of pharmacies in downtown Pahoa have closed.

    At least it's not a Wal-Mart. Or, considering the current situation, maybe I should be wishing it WAS a Wal-Mart.
    Last edited by grapes; 2015-Jan-01 at 07:04 PM. Reason: Fixed formatting
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  16. #46
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Some new information up after a bit of a dry spell. From the Kilauea status report:
    USGS Hawaiian Volcano Observatory (HVO) scientists conducted a helicopter overflight of the June 27th lava flow this afternoon and mapped its perimeter. At the time of the flight, surface breakouts along the distal part of the flow were scattered between 1 and 3.5 km (0.6 and 2.2 mi) upslope from the Pahoa Marketplace and posed no immediate threat. Amongst this activity, a narrow flow lobe (about 2.5 km (1.6 mi) upslope from Pahoa Marketplace) was advancing toward the north-northeast. This lobe has entered a drainage that leads to the steepest-descent path that crosses Highway 130 about 1 km (0.6 mi) south of the Makuʻu Farmer's Market, but the flow is still 3.5 km (2.2 mi) uplsope from that point and moving slowly. Small breakouts were also active in an area of persistent activity about 7 km (4 mi) upslope from Pāhoa.
    Also new maps and photos available.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  17. #47
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Pahoa Marketplace continues to "dodge the bullet".
    June 27th Lava Flow Observations: The flow that advanced toward Pahoa Marketplace in past weeks remained stalled approximately 800 m (0.5 miles or 880 yards) from the intersection of Highway 130 and Pāhoa Village Road, however, surface breakouts were scattered between 0.5 and 1 km (0.3 and 0.6 mi) upslope of the stalled flow tip during an HVO overflight yesterday morning. A narrow lobe was advancing north-northeast about 700 m (765 yd) upslope of the stalled tip. This new lobe has advanced about 240 m (260 yd) since January 9.
    (From the HVO Status Reports)

    It could be a short-term reprieve, of course. The June 27 flow has been active for six months now and shows no sign of stopping. The advancing lobe, fortunately, doesn't appear to be heading toward populous areas at the moment.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  18. #48
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Some activity:
    une 27th Lava Flow Observations: According to this morning's report from Hawai`i County Civil Defense, the tip of the June 27th lava flow advanced about 65 m (70 yd) since yesterday, and is about 650 m (0.4 mi) from the highway, in the vicinity of the fire and police stations

    The northern flow lobe that broke out from the main flow about 1.5 miles upslope of the tip was also active along its margins and in its interior, but was moving sluggishly during HVO's mapping on Friday. It is in a drainage area leading to the steepest-descent path that crosses Highway 130 about 1 km (0.6 mi) south of the Makuʻu Farmer's Market.
    The police and fire station is about 450 m north of, and across the road from, Pahoa Marketplace.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  19. #49
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Updated map showing the advance toward the fire/police stations.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  20. #50
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    The flow is mostly spreading rather than advancing for the past week or so. Status reports show it 500m from Highway 130. Note, however, that there are homes on the side of the highway closer to the flow. Pretty worrying.

    Some really good recent photos at the HVO site.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  21. #51
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    No advance toward the road in the past week but lots of breakouts/widening around the edges. There's also a breakout nearer PuuOo that may (my guess) be siphoning off some lava. Some good new pictures at the link above.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  22. #52
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Still stalled at the flow tip(s), but there are breakouts at the side. Some good new photos and maps at the HVO site.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  23. #53
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    The breakout on the north side has grown considerably. Fortunately it seems headed in a relatively benign direction. More details at the HVO site, link above.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  24. #54
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    No news is good news.
    In the down slope areas, to include the flow front, the lava flow continues with scattered surface breakouts, within the flow margins, and minor expansion of the flow field. Overall the flow has not moved closer to Hwy 130 in over a week. The breakout on the south side of the flow front lobe, about 870 m (0.5 mi) from Malama Market, is no longer advancing toward the Market, but also continues to widen.
    Malama Market, BTW, is a now-closed supermarket in Pahoa Marketplace, at the end nearest the flow.

    ETA: Some good new photos and updated maps are now up at the HVO site.

    ETA, March 19: No need for a whole new post. The flow near Pahoa is now completely inactive, with active breakouts confined to areas near Pu'u O'o, some mile upslope. A very good thing for the town.
    Last edited by Trebuchet; 2015-Mar-19 at 03:01 PM.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  25. #55
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Encouraging words from HVO:

    Volcanic Activity Summary: HVO is downgrading the volcano alert level for Kīlauea from WARNING to WATCH. Eruption of lava continues at both the Puʻu ʻŌʻō vent on Kīlauea Volcano’s East Rift Zone and in Halemaʻumaʻu Crater at the volcano’s summit. However, in recent weeks, the Puʻu ʻŌʻō lava flows nearest to the town of Pāhoa became inactive. Because the immediate threat from the June 27th lava flow has been reduced, we are reducing the alert level.


    Presently, the only active surface lava occurs in four separate breakouts from the main lava tube within three areas in the upper 6 km (4 mi) of the flow field below the Puʻu ʻŌʻō vent. Lava from these breakouts is moving slowly atop earlier flows and along the margin of the June 27th and the Kahaualeʻa (2013-2014) flow fields. Based on the rate and trajectory of these active flows, we anticipate that it will be at least months before lava could reach to within 1 mile or 1 week of homes or infrastructure.


    The ultimate trajectory and path of the lava flow depends on how lava activity evolves in these areas.


    Should breakouts along the northern margin of the June 27th flow field become dominant, the resulting lava flow will likely follow steepest lines of descent that approach the Hawaiian Acres and Ainaloa subdivisions.


    Should the breakout heading towards the south margin of the June 27th flow field become dominant, the resulting flow will likely parallel the East Rift Zone and approach the Pāhoa area.


    At this time, reoccupation of the lava tube that fed lava flows toward the Pāhoa Marketplace area is unlikely. Should this occur, however, delivery of lava farther downslope to the currently inactive extent of the June 27th lava flow field could happen more quickly, perhaps within weeks.


    This assessment is based on continued lava production at Puʻu ʻŌʻō at current eruption rates and vent location. Should the eruption rate increase significantly or the locus of eruption shift to a new vent, the conditions of lava flow advance and associated threat could change quickly.


    HVO will continue to monitor the volcano closely in cooperation with Hawai‘i County Civil Defense. Daily updates will continue.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  26. #56
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    Wow, almost a month since I last posted. There hasn't been much news, because active portions of the flow are well upslope from the town and the weather sounds as if it hasn't been suitable for photography and mapping.

    Today, however, we've got some new photos and maps, including the lava lake in the overlook crater at it's highest level ever, just 20 meters below the rim.

    http://hvo.wr.usgs.gov/activity/kilaueastatus.php

    ETA: The overlook crater lava lake is up to just 4 meters below the rim, where it would spill into the main Haleamaumau crater.
    Last edited by Trebuchet; 2015-Apr-27 at 03:01 PM.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  27. #57
    Join Date
    Jun 2004
    Location
    The Great NorthWet
    Posts
    14,632
    No new lava flow news, partly because of adverse weather, but in any case nothing near the town is active. The big news is up at Haleamaumau, where the Overlook Crater lava lake has overflowed onto the main crater flow several times and has built itself a wall so that it is now "perched". Also a couple of rockfalls from the main crater wall have led to some explosive events. Great pix and videos at the HVO site.
    Cum catapultae proscriptae erunt tum soli proscript catapultas habebunt.

  28. #58
    Join Date
    Jun 2002
    Posts
    1,989
    Quote Originally Posted by Trebuchet View Post
    Great pix and videos at the HVO site.
    Haven't seen that in 40 years.
    Writeup with pix and history at the Daily Mail.

  29. #59
    Join Date
    May 2005
    Location
    N.E.Ohio
    Posts
    22,006
    Quote Originally Posted by Squink View Post
    Haven't seen that in 40 years.
    What exactly have we seen 40 years ago and not since?

  30. #60
    Join Date
    Jun 2002
    Posts
    1,989
    Lava coming up onto the floor of the big crater.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •