In other words, it took some time for lava flows to reach Zone 2 areas, and the threat was not continuous-it depended on which direction and how fast the lava flows moved downslope. Zone 2 areas were also covered by lava during the eruption, but not immediately or repeatedly. Though the SW activity appears to have occurred outside of Mokuweoweo, the structural definition of Mauna Loa's summit region is larger than the main. In that eruption, lava flows immediately and repeatedly covered Zone 1 areas. The image depicts lava flow activity in the SW summit region, within Mokuweoweo (Mauna Loa’s summit caldera), and along the NE Rift Zone, where the eruption has localized at Fissure 3. Zone 2: "Areas adjacent to and downslope of active rift zones.” These areas are also hazardous, but somewhat less so, because it takes some time for lava from Zone 1 to reach Zone 2.Īs Kīlauea’s middle east rift zone eruption in January of 1983 proved, damage from lava flows will be greater in Zone 1 than in any other zone over the long term. Zone 1: "Includes the summits and rift zones of Kīlauea and Mauna Loa (left) where vents have been repeatedly active in historic time." These areas are the most dangerous because all, or nearly all, erupted lava first emerges from the ground within Zone 1. Rate of lava coverage-not how recently lava covered an area-is the basis of long-term lava flow hazard. Knowing exactly what and where you want to buy property and presenting that information to your agent will help them find the perfect home for you.įor more information on the subject check out the USGS website on frequently asked questions about lava zones.Ĭlick here to contact one of our realtors.Lava-flow hazard zones on Hawai'i Island reflect the long-term hazard of lava flows, not the short term hazard. Zone 9 is Kohala Volcano, which hasn’t erupted in the last 60,000 years.īe smart when buying property on the Big Island. As the number goes up, the scale moves drastically until you reach level 9. Then looks at the percentage covered in the last 750 years. The map takes into account the percentage of ground covered by lava in the last 200 years. There are currently no laws against building in higher risk zones. The map was created so that critical community buildings would be built in the safest locations available. It’s important to know what lava zone you’re in due to the fact that building permits can be issued for level 1 or 2 zones. The scale is a rating between 1 and 9, with 9 being least likely to be directly impacted and 1 being most likely. ![]() Related – Looking at a house with a water catchment system? Check out our blog here. ![]() ![]() They go on to say, “The map is intended to communicate long-term lava-flow hazards, rather than short-term hazards, which can change daily during periods of eruptive activity.” Volcano boundaries are shown as heavy, dark bands, reflecting the overlapping of lava flows from adjacent volcanoes along their common boundary. The map was made in 1992 and remains accurate today. Lava·flow hazard zone 1 Lava-flow hazard zones 2 through 9 Volcano DISCUSSION This map shows lavaflow hazard zones for the five volcanoes on the Island of Hawaii. The hazard zones also take into account structural and topographic features that would affect the direction of lava flows.”ĭue to the large sample period, the map does not readily fluctuate. Geological Survey has this to say about zoning: “The hazard zones are based on the locations of probable eruption sites (based on past eruption sites), the likely paths of lava flows erupted from those sites (based on topography and the paths of previous lava flows), and the frequency of lava flow inundation of an area over the past several thousand years. ![]() This can directly affect the cost of insurance for your property or require additional coverage options. Lava zones represent the hazard level for volcanic activity in your area. Lava zones in particular are something you may not have thought about during your search. almost any Hawaiian lava to form aa so that if you find an aa flow you. From elevation to climate zone, it’s important to understand your area completely. All lava flows pass through a range of viscosities as they cool and solidify. When buying land or real estate on the Big Island of Hawaii, there are many unique factors that need to be a part of your decision.
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