Weather World
Mill Reservoir Weather Advisories
STORM WARNING
Issue Date: 508 PM HST Fri Aug 14 2026
TROPICAL STORM WARNING REMAINS IN EFFECT
LOCATIONS AFFECTED - Wailuku - Waihee - Kapalua WIND - LATEST LOCAL FORECAST: Equivalent Tropical Storm force wind - Peak Wind Forecast: 35-45 mph with gusts to 50 mph - Window for Tropical Storm force winds: early Saturday morning until early Sunday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 58 to 73 mph - The wind threat has increased from the previous assessment. - 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. STORM SURGE - LATEST LOCAL FORECAST: Localized storm surge possible - Peak Storm Surge Inundation: The potential for up to 2 feet above ground somewhere within surge prone areas - Window of concern: through early Monday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm surge flooding greater than 1 foot above ground - The storm surge threat has remained nearly steady from the previous assessment. - PLAN: Plan for storm surge flooding greater than 1 foot above ground. - PREPARE: Complete preparations for storm surge flooding, especially in low-lying vulnerable areas, before conditions become unsafe. - ACT: Leave immediately if evacuation orders are given for your area. - POTENTIAL IMPACTS: Limited - Localized inundation with storm surge flooding mainly along immediate shorelines and in low-lying spots, or in areas farther inland near where higher surge waters move ashore. - Sections of near-shore roads and parking lots become overspread with surge water. Driving conditions dangerous in places where surge water covers the road. - Moderate beach erosion. Heavy surf also breaching dunes, mainly in usually vulnerable locations. Strong rip currents. - Minor to locally moderate damage to marinas, docks, boardwalks, and piers. A few small craft broken away from moorings. FLOODING RAIN - LATEST LOCAL FORECAST: Flood Watch is in effect - Peak Rainfall Amounts: Additional 3-6 inches, with locally higher amounts - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for major flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should include the potential for major flooding from heavy rain. Evacuations and rescues are likely. - PREPARE: Strongly consider protective actions, especially if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. Failure to take action will likely result in serious injury or loss of life. - POTENTIAL IMPACTS: Extensive - Major rainfall flooding may prompt many evacuations and rescues. - Rivers and tributaries may rapidly overflow their banks in multiple places. Small streams, creeks, canals, arroyos, and ditches may become dangerous rivers. In mountain areas, destructive runoff may run quickly down valleys while increasing susceptibility to rockslides and mudslides. Flood control systems and barriers may become stressed. - Flood waters can enter many structures within multiple communities, some structures becoming uninhabitable or washed away. Many places where flood waters may cover escape routes. Streets and parking lots become rivers of moving water with underpasses submerged. Driving conditions become dangerous. Many road and bridge closures with some weakened or washed out. TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes. FOR MORE INFORMATION: - https://www.weather.gov/hfo
TROPICAL STORM WARNING REMAINS IN EFFECT
LOCATIONS AFFECTED - Wailuku - Waihee - Kapalua WIND - LATEST LOCAL FORECAST: Equivalent Tropical Storm force wind - Peak Wind Forecast: 35-45 mph with gusts to 50 mph - Window for Tropical Storm force winds: early Saturday morning until early Sunday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 58 to 73 mph - The wind threat has increased from the previous assessment. - 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. STORM SURGE - LATEST LOCAL FORECAST: Localized storm surge possible - Peak Storm Surge Inundation: The potential for up to 2 feet above ground somewhere within surge prone areas - Window of concern: through early Monday morning - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for storm surge flooding greater than 1 foot above ground - The storm surge threat has remained nearly steady from the previous assessment. - PLAN: Plan for storm surge flooding greater than 1 foot above ground. - PREPARE: Complete preparations for storm surge flooding, especially in low-lying vulnerable areas, before conditions become unsafe. - ACT: Leave immediately if evacuation orders are given for your area. - POTENTIAL IMPACTS: Limited - Localized inundation with storm surge flooding mainly along immediate shorelines and in low-lying spots, or in areas farther inland near where higher surge waters move ashore. - Sections of near-shore roads and parking lots become overspread with surge water. Driving conditions dangerous in places where surge water covers the road. - Moderate beach erosion. Heavy surf also breaching dunes, mainly in usually vulnerable locations. Strong rip currents. - Minor to locally moderate damage to marinas, docks, boardwalks, and piers. A few small craft broken away from moorings. FLOODING RAIN - LATEST LOCAL FORECAST: Flood Watch is in effect - Peak Rainfall Amounts: Additional 3-6 inches, with locally higher amounts - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for major flooding rain - The flooding rain threat has remained nearly steady from the previous assessment. - PLAN: Emergency plans should include the potential for major flooding from heavy rain. Evacuations and rescues are likely. - PREPARE: Strongly consider protective actions, especially if you are in an area vulnerable to flooding. - ACT: Heed any flood watches and warnings. Failure to take action will likely result in serious injury or loss of life. - POTENTIAL IMPACTS: Extensive - Major rainfall flooding may prompt many evacuations and rescues. - Rivers and tributaries may rapidly overflow their banks in multiple places. Small streams, creeks, canals, arroyos, and ditches may become dangerous rivers. In mountain areas, destructive runoff may run quickly down valleys while increasing susceptibility to rockslides and mudslides. Flood control systems and barriers may become stressed. - Flood waters can enter many structures within multiple communities, some structures becoming uninhabitable or washed away. Many places where flood waters may cover escape routes. Streets and parking lots become rivers of moving water with underpasses submerged. Driving conditions become dangerous. Many road and bridge closures with some weakened or washed out. TORNADO - LATEST LOCAL FORECAST: - Situation is unfavorable for tornadoes - THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Tornadoes not expected - The tornado threat has remained nearly steady from the previous assessment. - PLAN: Tornadoes are not expected. Showers and thunderstorms with gusty winds may still occur. - PREPARE: Little to no preparations needed to protect against tornadoes at this time. Keep informed of the latest tornado situation. - ACT: Listen for changes in the forecast. - POTENTIAL IMPACTS: Little to None - Little to no potential impacts from tornadoes. FOR MORE INFORMATION: - https://www.weather.gov/hfo
FLOOD WATCH
Issue Date: 244 PM HST Fri Aug 14 2026
FLOOD WATCH REMAINS IN EFFECT FROM 6 PM HST THIS EVENING THROUGH LATE SATURDAY NIGHT
WHAT
Flash flooding caused by excessive rainfall will be possible. WHERE
The island of Maui and the island of Hawaii. WHEN
From 6 PM HST this evening through late Saturday night. IMPACTS
Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain. ADDITIONAL DETAILS
- Tropical Cyclone Lala will bring heavy rain to the Big Island and Maui, beginning this evening through Saturday night. At this time, amounts of 10 to 15 inches are possible over windward areas of Big Island, with 8 to 12 inches over windward areas of Maui. Higher localized amounts are possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
FLOOD WATCH REMAINS IN EFFECT FROM 6 PM HST THIS EVENING THROUGH LATE SATURDAY NIGHT
WHAT
Flash flooding caused by excessive rainfall will be possible. WHERE
The island of Maui and the island of Hawaii. WHEN
From 6 PM HST this evening through late Saturday night. IMPACTS
Significant flooding may occur due to the overflow of streams and drainages. Roads in several areas may be closed, along with property damage in urban or low lying spots due to runoff. Landslides may also occur in areas with steep terrain. ADDITIONAL DETAILS
- Tropical Cyclone Lala will bring heavy rain to the Big Island and Maui, beginning this evening through Saturday night. At this time, amounts of 10 to 15 inches are possible over windward areas of Big Island, with 8 to 12 inches over windward areas of Maui. Higher localized amounts are possible.
PRECAUTIONARY/PREPAREDNESS ACTIONS
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
WEATHER ALERT
Issue Date: 244 PM HST Fri Aug 14 2026
HIGH SURF WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM HST SUNDAY
WHAT
For the Big Island, dangerously large surf increasing from 8 to 12 feet tonight to 15 to 20 feet on Saturday. For Maui, dangerously large surf increasing from 7 to 10 feet tonight to 10 to 15 feet on Saturday. WHERE
East facing shores of Maui and Big Island. WHEN
From 6 PM this evening to 6 AM HST Sunday. IMPACTS
High. Expect very strong breaking waves and powerful currents. Waves breaking in channel entrances may make navigating the channels dangerous.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Stay away from the shoreline along the affected coasts. Be prepared for road closures. Postpone entering or leaving channels affected by the high surf until the surf subsides. &&
HIGH SURF WARNING REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 6 AM HST SUNDAY
WHAT
For the Big Island, dangerously large surf increasing from 8 to 12 feet tonight to 15 to 20 feet on Saturday. For Maui, dangerously large surf increasing from 7 to 10 feet tonight to 10 to 15 feet on Saturday. WHERE
East facing shores of Maui and Big Island. WHEN
From 6 PM this evening to 6 AM HST Sunday. IMPACTS
High. Expect very strong breaking waves and powerful currents. Waves breaking in channel entrances may make navigating the channels dangerous.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Stay away from the shoreline along the affected coasts. Be prepared for road closures. Postpone entering or leaving channels affected by the high surf until the surf subsides. &&
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