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Tropical Storm Warning Issued for Honolulu Metro Area

September 8, 2026 · wweather1 editorial · 2 min read

The National Weather Service in Honolulu has issued a Tropical Storm Warning for the Honolulu Metro area, effective September 7 at 8:14 PM HST. The warning affects locations including Salt Lake, Honolulu, and Kaimuki.

The National Weather Service (NWS) Honolulu issued the warning on September 7 at 8:14 PM HST, with the alert set through September 8 at 4:15 AM HST. Peak winds are currently forecast between 20 and 30 mph with gusts up to 40 mph, though there remains potential for winds reaching 39 to 57 mph due to forecast uncertainty.

Expected wind impacts in the affected areas remain limited but include potential damage to porches, awnings, carports, sheds, and unanchored mobile homes. Unsecured lightweight objects may be blown about, and many large tree limbs could break off, with some shallow-rooted trees subject to snapping or uprooting.

Some fences and roadway signs may be blown over, and scattered power and communications outages are possible. A few roads could become impassable due to debris, particularly within urban or heavily wooded areas, creating hazardous driving conditions on bridges and elevated roadways.

No storm surge inundation is forecast, presenting little to no threat of storm surge flooding, though rough surf is expected. The wind and storm surge threats have remained nearly steady from previous assessments.

Why it is dangerous and what to do

⚠️ Safety
• Complete preparations to protect property and secure loose, lightweight outdoor objects.
• Prepare for potential scattered power and communications outages.
• Exercise caution while driving, particularly on bridges, elevated roadways, and through heavily wooded or urban areas.
📊 The numbers, from wweather1 data
Honolulu: now +25°, Drizzle.
The record for this date is +31° (2023).
Three-day forecast: 8 September: +28°/+25° · 9 September: +29°/+24° · 10 September: +29°/+23°
The figures are computed automatically from the Open-Meteo/ERA5 archive — no eyeball estimates.
📰 Data source: NWS. Forecast and analysis — wweather1, based on Open-Meteo / met.no data.

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