Here is a sampling of peak wind gusts that were observed in Puerto Rico and the Virgin Islands late Tuesday into Wednesday.
Western St. Croix, Virgin Islands: 137 mph (sustained winds of 106 mph)
Isla Culebrita, Puerto Rico: 137 mph
Gurabo, Puerto Rico: 120 mph (WeatherFlow station)
Camp Santiago, Puerto Rico: 118 mph
El Negro, Puerto Rico: 116 mph
Yabucoa, Puerto Rico: 116 mph (WeatherFlow station)
Arecibo, Puerto Rico: 111 mph
San Juan, Puerto Rico: 110 mph (WeatherFlow station)
Fajardo, Puerto Rico: 100 mph
San Juan (Luis Muñoz Marin Int'l Airport), Puerto Rico: 95 mph
St. Thomas, Virgin Islands: 86 mph
A storm surge of over 5 feet was recorded Wednesday by a NOAA tide gauge at Yabucoa Harbor, Puerto Rico.
Here are some other peak storm-surge values from Wednesday, above the average high-tide level:
San Juan Bay, Puerto Rico: About 2.4 feet
Fajardo, Puerto Rico: About 2.3 feet
Arecibo, Puerto Rico: About 2.2 feet
Christiansted Harbor, St. Croix, Virgin Islands: About 2 feet
Culebra, Puerto Rico: About 1.7 feet
St. John (Lameshur Bay), Virgin Islands: About 1.5 feet
At least one rain gauge near Caguas, Puerto Rico, reported more than 35 inches of rain from Maria. According to the National Weather Service office in San Juan, Puerto Rico, rain rates approached 5 to 7 inches per hour Wednesday morning.
This torrential rain prompted flash flood warnings in much of Puerto Rico and parts of the Virgin Islands.
Flash flood emergencies were issued for the Rio de la Plata Basin. River levels had risen 20 feet since midnight Tuesday night near the town of Comerio.
Over a dozen river gauges reported levels above flood stage. The Rio Grande de Manati near Ciales shattered its previous record by over 17 feet, and the Rio Gurabo at Gurabo neared its record crest set in September 1960. Other record levels have been seen, as well, including the Rio Grande de Manati near Manati (previous record was set in September 1996) and the Rio Grande de Arecibo above Arecibo (previous record was set in May 1985).
https://weather.com/storms/hurricane/news/hurricane-maria-us-east-coast-forecast