What's Happening?

Hawaii is bracing for another round of heavy rainfall this week, with the entire state under flood watches. The rain is expected to begin on Wednesday and continue through Friday, following a destructive period of flooding in March. The state experienced significant damage from back-to-back Kona lows, with estimates reaching $1 billion. Rainfall is anticipated to be particularly intense on The Big Island and Kauai, with totals potentially reaching up to 8 inches. Higher elevations may see even greater amounts. Additionally, snowfall and ice accumulation are possible on the summits of The Big Island's volcanoes. Winds are forecasted to reach speeds of 40 to 50 mph, with higher gusts in elevated areas. The rainfall is driven by a cold front and a surface trough approaching from the northwest, bringing a surge of moisture from the southwest.

Why It's Important?

The heavy rainfall poses a significant flood threat to Hawaii, which is already saturated from previous storms. Areas like Honolulu and Kahului have experienced rainfall far above average since March, increasing the risk of flooding. The potential for flash flooding is high, especially in regions with heavy rainfall rates. Snow and ice accumulation on the highest volcano peaks could also impact travel and safety in those areas. Winds may exacerbate conditions, particularly in higher elevations, leading to potential power outages and damage.

What's Next?

The forecast indicates that heavy rain will begin on Wednesday and persist through Friday. Rainfall totals could reach up to 8 inches on The Big Island and Kauai, with higher amounts possible in elevated areas. Snowfall up to 3 inches and ice accumulation up to a quarter of an inch are expected on the summits of The Big Island. Winds are predicted to blow between 40 and 50 mph, with stronger gusts in higher elevations. The flood watch remains in effect for the entire state during this period.

Beyond the Headlines

Residents are advised to stay informed about weather updates and heed any warnings from local authorities. It is crucial to avoid flooded areas and exercise caution when traveling. Prepare for potential power outages and ensure emergency supplies are readily available. Those in higher elevations should be aware of snow and ice conditions.

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