Lots of Rain
On Sept. 19, The GPM mission's radar measured extreme storms within Hurricane Maria with rain falling at over 5 inches per hour.
On Sept. 19, the NOAA issued a tropical-storm-force wind advisory that would remain in effect through Sept. 24.
NOAA's GOES-16 captured this geocolor image of Hurricanes Jose and Maria and Tropical Depression Lee simultaneously churning through the Atlantic Ocean on Sept. 18.
Maria Approaches the Caribbean
This image of Hurricane Maria was taken by NOAA's GOES East satellite on Sept. 18 at 10:45 a.m. EDT (1445 GMT) as it strengthened to a Category 3 hurricane just east of the Leeward Islands. Hurricane Maria made landfall on the Caribbean island of Dominica as a Category 5 storm later that day at 9:15 p.m. EDT (0115 GMT on Sept. 19).
Maria's Projected Path
This graphic shows areas affected by Hurricane Maria, and the expected dates and times when the storm will arrive at those locations. The NOAA released this forecast on Sept. 18 at 5 p.m. EDT (2100 GMT).
At a Category 1 storm, Hurricane Maria trekked across the Caribbean Sea toward the Leeward Islands in this GOES satellite image taken on Sept. 18.
On Sept. 18, NASA's Global Precipitation Measurement (GPM) satellite measured Hurricane Maria's cell at an imposing 10.41 miles (16.75 kilometers) altitude, stretching into the lower stratosphere.
A View from GOES-13
Hurricane Maria is seen by NOAA's GOES-13 satellite (also known as GOES East) as the storm was located about 60 miles east of Martinique and moving toward the west-northwest near 10 mph on Sept. 18 at 11 a.m. EDT. At the time, Maria was a Category 3 hurricane. It later strengthened to a Category 5.
NASA's GOES-East satellite captured this view of Hurricane Maria on Sept. 18 as the Category 3 storm quickly evolved into a Category 5.
Dropping the Rain
Using the Global Precipitation Measurement (GPM) core satellite, experts found that Hurricane Maria contained falling rain at the rate of over 6 inches (15 centimeters) per hour. The thunderstorms inside Maria measure to more than a towering 9 miles high. The GPM satellite captured this view on Sept. 17 at 10:01 p.m. EDT (0201 GMT on Sept. 18).