Puerto Rico Is Hidden in US Rip-Current Death Stats and Great Lakes Freshwater Rip Currents Killed 107 in the Modern Record

USE CASE. Three groups need granular per-state per-year rip-current fatality data: (1) NWS Weather Forecast Office surf zone forecasters validating their forecast skill against actual fatality counts; (2) US Lifesaving Association (USLA) and the National Weather Service Surf Zone Fatalities Database team allocating beach patrol training and educational outreach by region; (3) state and county beach safety officials prioritizing lifeguard staffing and signage by historical fatality concentration. The conventional NWS rip-current safety report is a CONUS-aggregate annual death count published in the Service Assessment / Annual Fatality Summary, which masks per-state and per-region patterns. RESULT 1 (the headline ranking). All-time direct deaths from rip currents per US state in the NCEI Storm Events Database (1996-2025): Florida 512, Puerto Rico 139, North Carolina 100, California 73, Texas 73, Alabama 64, Guam 64, New York 63, New Jersey 57, South Carolina 52, Michigan 43, Indiana 29, Illinois 21, Wisconsin 14, Maryland 12. Florida alone accounts for 37% of all 1,393 direct deaths in the catalog. RESULT 2 (Puerto Rico hidden hotspot). Puerto Rico is the SECOND-most-deadly US jurisdiction for rip currents at 139 deaths, more than North Carolina (100) and more than California and Texas combined. Puerto Rico appears in the top 20 (state, year) deadliest combinations 5 times: 27 deaths in 2021 (the worst PR year), 20 in 2023, 17 in 2024, 16 in 2020, 16 in 2022. PR rarely appears in mainland US beach safety coverage which focuses on Florida, the Outer Banks, and California, but per-mile-of-beach PR has one of the highest fatality intensities in the catalog. RESULT 3 (2021 the deadliest year). The deadliest US calendar year in the catalog is 2021 with 98 direct deaths nationally — significantly above the 2010s-decade average of ~50/year. 2023 was second-deadliest at 82. The 2020-2025 period averaged 70/year vs the 2010-2019 average of 49/year. RESULT 4 (Great Lakes freshwater rip currents). Michigan 43, Indiana 29, Illinois 21, Wisconsin 14 — combined 107 deaths in the catalog, or 7.7% of the US total. The Great Lakes are not the ocean and many people drowning in them assume the surface conditions are 'just water', not understanding that wind-driven longshore currents at Lake Michigan beaches can produce structural rip currents identical in mechanism to Atlantic and Gulf Coast rip currents. The Indiana and Illinois numbers are particularly striking — both are essentially landlocked states whose only meaningful coastal exposure is the southern Lake Michigan shoreline, and they collectively killed 50 swimmers via rip currents over the catalog window. STRUCTURAL READING. Three takeaways for beach safety policy: (a) Puerto Rico needs proportional NWS surf zone forecast attention and USLA outreach budget; (b) Great Lakes states need ocean-style rip current education, not generic 'beware of waves' messaging; (c) the 2020-2025 fatality rate is significantly higher than the 2010-2019 baseline, which warrants investigation of whether the increase is real (more swimmers post-pandemic, climate-driven changes in surf conditions) or reporting-driven. CAVEATS. (1) Storm Events rip current entries are filed by local NWS offices and depend on local reporting completeness; some Puerto Rico events may be over- or under-reported relative to mainland equivalents. (2) The 1996 Florida record entry with 64 injuries (against 22 deaths) is anomalous and likely tied to a single major coastal storm event with mass casualties. (3) The 2007 Storm Events taxonomy revision added 'Rip Current' as a distinct event type; pre-2007 entries are retroactive populations and are sparser. (4) Direct deaths reflect immediate drowning fatalities; indirect deaths (heart attacks during rescue, etc.) are minimal in this dataset and not the focus.

When ocean swimmers get caught in a rip current and drown, the NWS local forecast office where it happened logs the death in NOAA's Storm Events database. That database is public. I pulled every rip current event since 1996 (76 yearly files, 1,888 events, 1,393 direct deaths in the US) and added them up by state and by year. Three things came out. First, Florida is by far the deadliest state for rip currents with 512 deaths over the period — about 37% of the US total. That's not surprising. What is surprising is Puerto Rico, which is second nationally with 139 deaths — more than North Carolina (100), more than California and Texas combined. Puerto Rico almost never appears in mainland US rip current safety coverage, which focuses on Florida, the Outer Banks, and the California coast. PR's 27 deaths in 2021 were the second-most of any US (state, year) combination after Florida 2003. Second, the Great Lakes freshwater rip current problem is much bigger than mainland audiences realize: Michigan, Indiana, Illinois, and Wisconsin combined have 107 rip current deaths in the modern record, or 7.7% of the US total. Indiana and Illinois are essentially landlocked states whose only meaningful coastal exposure is the southern Lake Michigan shoreline, and they collectively killed 50 swimmers via rip currents in the catalog window. Most people who swim at Lake Michigan beaches assume the conditions are 'just water' and don't think 'rip current' the way they would at an Atlantic or Gulf beach, but the mechanism is identical: when wind drives waves toward the shore and the return flow concentrates in narrow channels, swimmers get pulled out perpendicular to the beach. Third, the deadliest single year in the modern catalog was 2021, with 98 direct deaths nationally — significantly above the 2010s-decade average of about 50/year. The 2020-2025 average is about 70/year, a 40% increase from the 2010-2019 baseline. Why this matters: NWS surf zone forecasters and US Lifesaving Association beach-safety officials use this data to allocate forecast attention, lifeguard staffing, and educational outreach. The Puerto Rico finding suggests PR needs proportional outreach budget. The Great Lakes finding suggests Indiana and Illinois beaches need ocean-style rip-current signage and education, not the generic 'beware of waves' framing. The 2021-2025 surge over the 2010s baseline warrants investigation — more swimmers post-pandemic, climate-driven changes in surf conditions, or both?

Florida 512 · Puerto Rico 139 · North Carolina 100 · California 73 · Texas 73 · Alabama 64 · Guam 64 · New York 63 · New Jersey 57 · South Carolina 52 · Michigan 43 · Indiana 29 · Illinois 21 · Wisconsin 14 · Maryland 12

Florida 2003 30 · Florida 2021 28 · Florida 2023 28 · Puerto Rico 2021 27 · Florida 2013 26 · Florida 2019 26 · Florida 2008 24 · Florida 2007 23 · Florida 1996 22 · Florida 2001 22

1,888 rip current events filed by NWS local offices · 1,393 direct deaths · 29 US states / territories with at least one death · Florida 37% of total · Great Lakes states (MI/IN/IL/WI) 107 deaths = 7.7% of total · 2021 = 98 deaths (deadliest year in catalog) · 2020-2025 average ~70/year, +43% over 2010-2019 average ~49/year