Following a powerful kona storm that caused severe flooding and damage across Hawaiʻi last weekend, another kona low is developing, bringing a new round of heavy rains.
The National Weather Service issued a Flood Watch for all of Hawaiʻi from 6 p.m. on Thursday, March 19, through 6 p.m. on Sunday, March 22.
The developing low is expected to be weaker and hit leeward areas. However, the risk of flash flooding is significant because the ground is already saturated from previous rains. With the soil unable to absorb more water, additional rain could lead to rapid runoff and flooding.
According to Hawaiʻi News Now, Oʻahu, Maui County and Hawaiʻi Island face the highest risk of flooding. Kauaʻi is still expected to see wet weather.
The City and County of Honolulu issued an evacuation order for Waialua and Haleʻiwa areas due to catastrophic flooding and rising water levels at the Wahiawā Dam. Those who can evacuate safely are urged to move to higher ground immediately. An emergency shelter has been opened at Waialua High and Intermediate School for those who need a safe place to go.
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At 9 a.m. on March 20, the Department of Emergency Management said the dam has not failed but is at imminent risk of failure with potential life-threatening flooding of downstream areas.
The public is reminded to:
- Stay out of floodwater.
- Avoid walking or driving through moving water.
- Be aware that fast-moving water can sweep away vehicles and individuals.
