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Going Beyond 2D: GPM Observations of Typhoon Sinlaku
In April 2026, Typhoon Sinlaku impacted the Pacific Islands of Guam, Saipan, and Tinian. As the storm approached the islands and made landfall, NASA's Global Precipitation Measurement mission (GPM) satellite and multi-satellite data-processing algorithms gave insights into the rain that fell from this powerful storm. Now, learn how GPM helps us go beyond individual snapshots of surface rainfall by...
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Powerful Typhoon Sinlaku strikes the Northern Marianas
The GPM Core Observatory flew over the center of Super Typhoon Sinlaku at 12:08 UTC (10:08 pm LST) April 12th, providing a detailed look into the structure and intensity of the precipitation within Sinlaku.
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Powerful Cyclone Narelle makes multiple landfalls in Australia
After intensifying into a powerful Category 4 cyclone (Category 5 on the Australian scale) in the Coral Sea, Narelle made landfall on the east coast of Queensland, before continuing on across the Northern Territory, and turning south to make landfall yet again in Western Australia.  Along the way, Narelle brought gusty winds and heavy rains to all three regions.Narelle first began as a westward...
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Natural Cycles in Global Precipitation
In many places, the amount of that rain falls on a particular day or hour is influenced by multiple natural cycles that exist simultaneously on different time scales. One such cycle repeats every 24 hours, and another repeats every year.The global extent of these cycles can be studied using NASA's IMERG precipitation estimates that have been generated for 1998 to the present. Most of Earth's...
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NASA Tracks Tropical Moisture Flooding Washington
Several atmosphere rivers have recently carried plumes of moisture from the Tropics toward the United States. These plumes of water vapor have contributed to flood-producing storms over Washington State during the first three weeks of December 2025.
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NASA satellite precipitation data is made freely available to all researchers who wish to use it. Visit this section for a directory of
data products
, documentation,
training materials
and more.
GPM & TRMM Data Directory
Data News
1997 - 2015
2014 - Present
NASA’s
Global Precipitation Measurement Mission
(GPM)
uses satellites to measure Earth's rain and snowfall for the benefit of mankind. Launched by
NASA
and
JAXA
on Feb. 27th, 2014, GPM is an international mission that sets the standard for spaceborne precipitation measurements. Using a network of satellites united by the
GPM Core Observatory
, GPM expands on the legacy of the
Tropical Rainfall Measuring Mission
(TRMM) by providing high quality estimates of Earth’s rain and snowfall every 30 minutes.
Celebrate GPM's 10th Anniversary!
Learn how GPM datasets are being used by government agencies and other organizations around the world to study
natural disasters
public health
freshwater resources
, and a variety of other application areas.
Learn more about GPM Applications
Extreme Weather News
Near Real-time IMERG
Latest Half-hour of Earth's Precipitation
The
ntegrated
ulti-satellit
etrievals for
PM product combines precipitation observations using infrared and microwave sensors from a
constellation of partner satellites
, united by the
GPM Core Observatory
, to provide near real-time half-hourly precipitation estimates at 10km resolution for the entire globe.
Learn More about IMERG
Download IMERG Data
View this and other GPM visualizations at the NASA Scientific Visualization Studio (SVS)
Related Projects
LANDSLIDES @ NASA
NASA scientists are building a catalog of landslides so we can be prepared when the next natural disaster strikes. Join our citizen science project to help track landslides and improve prediction models.
NASA Disasters Program
The NASA Earth Applied Science Disasters program area promotes the use of Earth observations to improve prediction of, preparation for, response to, and recovery from hazards and disasters.
GLOBE Observer
An international citizen science initiative to understand our global environment. Your observations help scientists track changes in clouds, water, plants, and other life in support of climate research.
Upcoming Events
Oct. 10, 2024
GPM 10-in-10 Webinar: Ground Validation
Virtual
Nov. 14, 2024
GPM 10-in-10 Webinar: Behind the Scenes and Looking Toward the Future
Virtual
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