Hurricanes and Tornadoes That Hit Anasco, PR

The nearest NOAA station with 1991–2020 climate normals is Coloso, PR RQ, 7 miles north of Anasco at 40 feet. September is the warmest, with an average high of 89°F and low of 73°F; January is the coolest, at 84°F and 66°F. August is the wettest at 10.5 inches of precipitation on average and December the driest at 2.4 inches; the year adds up to 77.6 inches over 121 days with at least a tenth of an inch. June to November, the hurricane season months, bring 66% of the year's precipitation (51.6 of 77.6 inches); the other six months are drier. September has brought the most of the 52 tropical systems that passed within 75 miles (25); a normal September there has highs of 89°F and 9.3 inches of precipitation. Highs reach 90°F on about 108 days a year, almost all from February to December. A night below freezing comes less than once a year on average. That 77.6 inches is more than at 17 of the 21 Puerto Rico stations used on this site (81%). Mayaguez, 6 miles south, has its own station (Mayaguez City, PR RQ): 51.3 inches a year, 26.3 less than here, and a September average high of 90°F against 89°F.

Water temperature at the NOAA tide station Mayaguez, PR, 5 miles south, averaged 87°F in September and 81°F in February over 2021–2025. Sea level at the Magueyes Island tide gauge, 23 miles from Anasco, has risen 0.81 ± 0.06 inches per decade from 1955 to 2025, NOAA's linear trend; at that pace it is 8.1 inches in a hundred years. That is faster than at 41 of the 144 U.S. gauges with a NOAA trend.

Since 1996, the National Weather Service has logged 274 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Anasco: 123 floods, 75 flash floods, 46 thunderstorm wind reports, 26 heavy rain events and 4 lightning strikes. They killed 7 people and injured 9, and the NWS estimated $2.26 billion in property and crop damage. The strongest thunderstorm gust on record here was 58 mph, on June 22, 2015. May has had the most flash floods, 16 of 75. Of the 86 Puerto Rico cities on this site with a flash flood on record, 45 have had fewer than Anasco.

Flood insurance policyholders in Anasco's ZIP code 00610 have filed 101 claims with the National Flood Insurance Program since 1979, and were paid $825,000 for buildings and contents, in the dollars of each year. The most came from Hurricane Georges in 1998: 59 claims (58% of all) and $270,000, then Hurricane Maria in 2017 with 15. 95% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 72 Puerto Rico cities on this site with 10 or more claims, 35 have fewer than Anasco.