Two weeks, two Kona storms, and a record-breaking amount of water. Since March 10, back-to-back storms have officially made this the 3rd wettest March since 1920.

• Historic Totals: Across the islands, we’ve seen up to 77 inches of rain in just 14 days. 
• Statewide Impact: Rainfall has reached as high as 3000% of the normal amount for this time of year (see figure).
• Hardest Hit: The second storm (March 19-23) dumped up to 61 inches, triggering devastating floods on Oʻahu’s North Shore and throughout Maui County.
• Mānoa Flash Floods: On March 23, intense bursts of 8 inches fell on already saturated ground, causing rapid flooding in the valley.

Preliminary estimates show that an average of 20.4 inches of rain fell across the major islands during this two-week period. That implies over 2.3 trillion gallons of water poured onto the islands—the equivalent of almost 3.5 million Olympic-size swimming pools

Data & map provided by the Hawaiʻi Climate Data Portal

March 10 to March 16, 2026 Storm Viewer: https://www.hawaii.edu/climate-data-portal/extreme-event/

Read More: https://www.hawaii.edu/news/2026/03/19/hawaii-mesonet-storm-data/