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Effects of Hurricane Maria in Puerto Rico

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Through NEXRAD and Sea level

Background

Before landfall

Maria began as a tropical depression on September 16, about 665 miles (1,070 km) east of Barbados. Conditions favorable for hurricane activity allowed the storm to strengthen throughout the day, and a convective burst propelled Maria to hurricane strength late on September 17. Over the next 24 hours, Maria explosively strengthened to Category 5 status 15 miles (24 km) east-southeast of Dominica, before making landfall there early on September 19. Despite some weakening, Maria reached peak intensity early on September 20 while roughly 30 miles (48 km) south of St. Croix, with maximum sustained winds of 175 mph (282 km/h) and a minimum central pressure of 908 mbar (26.8 inHg).

Maria made its closest approach to St. Croix around 05:00 UTC on September 20. It passed within 20 miles (32 km) of the island; the storm's outer eyewall lashed the island, but the inner eyewall remained offshore. Hours later, the outer eyewall hit Vieques, an island off of Puerto Rico's eastern coast. By this time, an eyewall replacement cycle had caused Maria to weaken to Category 4 strength. Maria made landfall, just south of Yabucoa, around 10:15 UTC, with sustained winds of 155 mph (249 km/h) and a central pressure of 920 mbar (27 inHg). It was the second-strongest recorded hurricane to hit the island, surpassed only by the 1928 San Felipe Segundo hurricane, the only Category 5 storm to have struck Puerto Rico.

Infrastructure and recession

The Puerto Rico Electric Power Authority (PREPA), had $9 billion in debt before the hurricane. Aging infrastructure across the island left the grid susceptible to storm damage; the median age of PREPA power plants was 44 years. The company's safety record was inadequate. Local newspapers frequently described poor maintenance and outdated controls.

In the decade preceding Maria, Puerto Rico suffered from financial decline and crippling debt from poor fiscal management. Early in 2017, the territory filed for bankruptcy as its public debt reached $74 billion. A change in taxation policy prompted an exodus of successful businesses and reduced tax revenue. Unemployment rates rose to 45%.

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