GPM IMERG Measures Hurricane Michael's Rainfall Accumulation
At least eleven deaths have now been attributed to deadly hurricane Michael. Some casualties resulted not only from Michael's destructive winds and storm surges but also from the blinding rain that Michael produced as it battered states from Florida northeastward through Virginia. Today tropical storm Michael is moving out over the Atlantic Ocean and has transitioned into a powerful extratropical storm.
This animation using the GPM IMERG multi-satellite dataset shows the estimated total rainfall accumulation for #HurricaneMichael from 10/8/18 - 10/12/18. Learn more: https://t.co/aJuEp6o855 pic.twitter.com/n6e2eEw8om— NASA Precipitation (@NASARain) October 12, 2018
This rainfall accumulation analysis was derived from NASA's Integrated Multi-satellitE Retrievals data (IMERG). IMERG data were used to calculate estimates of precipitation totals from a combination of space-borne passive microwave sensors, including the GMI microwave sensor on the GPM satellite, and geostationary IR (infrared) data. IMERG data benefits from algorithms developed by NASA's Precipitation Measurement Missions (PMM) science team that supports GPM's Missions. This analysis shows IMERG rainfall accumulation estimates along Michael's track during the period from becoming a tropical depression fourteen off the coast of the Yucatan Peninsula until it passed off the East Coast. Michael's approximate 0000Z and 1200Z locations are shown overlaid on this analysis. IMERG rainfall accumulation data indicated that Michael frequently produced rainfall totals greater than 10 inches (254 mm) along it's track. IMERG data indicated that the heaviest rainfall accumulation occurred off the Yucatan where were over 20 inches (512 mm) were estimated. Also of interest is the heavy rainfall that fell in less than a week with stormy weather extending from Texas to the Great Lakes.
Visualization by Matt Lammers and Owen Kelley (NASA GSFC)
Caption by Hal Pierce (SSAI / NASA GSFC)