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Storm
Forecast track and cone
The NHC's own cone, redrawn each advisory. It shows where the center may go — impacts reach far beyond it. Radar shows where the rain actually is.
Your island
Alerts are pulled zone by zone from the National Weather Service. Pick your island, then narrow to your area.
Radar and satellite
Where the rain is right now. No radar sits on Oʻahu — the Molokaʻi site covers it. Open any image for the loop.
Every alert covering you
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Timeline
Each bar is a real alert with the weather service's own start and end times. Bars fading out on the right have no published end yet.
Surf, shore by shore
Face heights by shore direction, from the NWS Surf Zone Forecast — the shores facing the storm take the brunt.
Mauka Stream gauges
Flash flooding is what kills here, and it starts in the gulches before the coast sees anything. Color is each gauge's own NWS flood stage.
When surge meets the tide
Storm surge rides on the tide — a nuisance at low water, a flooded street at high. NOAA predictions for Honolulu Harbor.
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Astronomical predictions only — no surge included — and Honolulu is the reference, not your exact shoreline.
What to do next
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Take this with you A one-page card for when the power goes and the phone is dying
Plain text, so it survives a screenshot, a printer and a dead battery.
Shelters
Open shelters as reported by FEMA, Honolulu DEM and Hawaiʻi County Civil Defense. Counties move faster than any feed — confirm before you drive.
Power
Outages by island, in customers. During a storm a restore estimate is a plan, not a promise.
After it passes
More people are hurt in the days after a Hawaiʻi storm than during it — by generators, downed lines, floodwater and cleanup. Ordered by what harms you soonest.
Radio, outages and county contacts
Cell towers hold on batteries for hours, not days. Write these down.