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Category: Hydrology

Ongoing Kona Low Brings Significant Flooding to Hawaii

A persistent Kona low coupled with strong water vapor transport from an atmospheric river has brought devastating floods to the state of Hawaii in late March 2026. Rain totals over the past ten days have exceeded 40 inches in some locations, prompting evacuation orders for thousands. Over two hundred people... Read More

Flooding Impacting Many Parts of France

France has been experiencing record rainfall this winter. Last week (the final week of February 2026), the country ended a positively-biblical 40 day streak of consecutive days of rain, defined as an average of at least 1 mm of rain from all observing sites across continental France (about 80% of... Read More

Tropical Convection to Bring Heavy Rainfall to Guam

It is mid to late July, and the western Pacific Ocean is starting to see its share of tropical activity. While Tropical Storm Francisco is spinning toward the Ryuku Islands of southwestern Japan, the people of Guam have their eyes on Invest 98W, an intensifying system closely approaching their island.... Read More

American Samoa’s Wettest Year Gets Wetter

2025 has proven to be an atypically wet year for American Samoa. The cumulative precipitation chart backs that up: going back to 1 January, the total rainfall at Pago Pago has been the highest on record up to this date, and total rainfall is 70% higher than a normal year.July... Read More