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Hurricane Watch — Big Island Summit Severity: Severe. Certainty: Possible. A Hurricane Watch means hurricane-force winds are possible somewhere within this area within the next 48 hours * LOCATIONS AFFECTED - Mauna Kea Summit - Mauna Loa Summit * WIND - LATEST LOCAL FORECAST: Equivalent Cat 1 Hurricane force wind - Peak Wind Forecast: 55-75 mph with gusts to 110 mph - Window for Tropical Storm force winds: Thursday afternoon until Sunday morning - Window for Hurricane force winds: Friday evening until early Saturday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 58 to 73 mph - PLAN: Plan for dangerous wind of equivalent strong tropical storm force. - PREPARE: Remaining efforts to protect life and property should be completed as soon as possible. Prepare for significant wind damage. - ACT: Move to safe shelter before the wind becomes hazardous. - POTENTIAL IMPACTS: Significant - Some damage to roofing and siding materials, along with damage to porches, awnings, carports, and sheds. A few buildings experiencing window, door, and garage door failures. Mobile homes damaged, especially if unanchored. Unsecured lightweight objects become dangerous projectiles. - Several large trees snapped or uprooted, but with greater numbers in places where trees are shallow rooted. Several fences and roadway signs blown over. - Some roads impassable from large debris, and more within urban or heavily wooded places. A few bridges, causeways, and access routes impassable. - Scattered power and communications outages, but more prevalent in areas with above ground lines. * FLOODING RAIN - LATEST LOCAL FORECAST: Flood Watch is in effect - Peak Rainfall Amounts: Additional 12-18 inches, with locally higher amounts - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for extreme flooding rain - PLAN: Emergency plans should include the potential for extreme flooding from heavy rain. Evacuations and rescues are likely. - PREPARE: Urgently consider protective actions from extreme and widespread rainfall flooding. - ACT: Heed any flood watches and warnings. Failure to take action will likely result in serious injury or loss of life. - POTENTIAL IMPACTS: Devastating to Catastrophic - Extreme rainfall flooding may prompt numerous evacuations and rescues. - Rivers and tributaries may overwhelmingly overflow their banks in many places with deep moving water. Small streams, creeks, canals, arroyos, and ditches may become raging rivers. In mountain areas, deadly runoff may rage down valleys while increasing susceptibility to rockslides and mudslides. Flood control systems and barriers may become stressed. - Flood waters can enter numerous structures within multiple communities, some structures becoming uninhabitable or washed away. Numerous places where flood waters may cover escape routes. Streets and parking lots become rivers of raging water with underpasses submerged. Driving conditions become very dangerous. Numerous road and bridge closures with some weakened or washed out. * TORNADO - LATEST LOCAL FORECAST: - Situation is somewhat favorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for a few tornadoes - PLAN: Emergency plans should include the potential for a few tornadoes. - PREPARE: If your shelter is particularly vulnerable to tornadoes, prepare to relocate to safe shelter before hazardous weather arrives. - ACT: If a tornado warning is issued, be ready to shelter quickly. - POTENTIAL IMPACTS: Limited - The occurrence of isolated tornadoes can hinder the execution of emergency plans during tropical events. - A few places may experience tornado damage, along with power and communications disruptions. - Locations could realize roofs peeled off buildings, chimneys toppled, mobile homes pushed off foundations or overturned, large tree tops and branches snapped off, shallow-rooted trees knocked over, moving vehicles blown off roads, and small boats pulled from moorings. * FOR MORE INFORMATION: - https://www.weather.gov/hfo
The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.