May 30, 2019
The Southern and Central United States have been drenched by rainstorm after rainstorm in the spring of 2019, leading to widespread flooding. Across the continental United States, river gauges at 404 locations were above flood stage on May 29, with the vast majority along the Missouri, Mississippi, and Arkansas rivers and their tributaries. The problem was most acute in late May along the Arkansas River. As of May 29, the National Weather Service reported flooding at 22 gauges along the river in Kansas, Oklahoma, and Arkansas, not including nearby tributaries and lakes. Major flooding was observed at 13 of those gauges. News media and forecasters predicted flooding in every major community along the river in the coming days. Every county in Oklahoma was in a state of emergency, and evacuations were ordered or recommended in several communities in Arkansas. MODIS imagery of flooding on the Arkansas River May 27, 2019. Credit: NASA Earth Observatory The false-color image above was acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua and Terra on May 27, 2019.. The combination of near-infrared and visible light (MODIS bands 7-2-1) makes it easier to see rivers out of their banks and water spread across flood plains. Water is blue; vegetation is green; clouds are bright blue or white; and bare flood plains along the river are tan (2018 image).
May 28, 2019
On June 1, the 2019 Atlantic hurricane season begins. But worldwide there really is no off-season for these tropical storms; they affect the globe in one way or another year-round. At NASA, we leverage the power of our views of Earth from space and research aircraft to assist communities around the world as they plan for — and recover from — these severe, often life-threatening, events. Data from NASA’s robust constellation of orbiting satellites and airborne and ground sensors are used to assess, predict and describe disaster impacts to inform the actions of leaders, first responders, and those providing relief.
May 13, 2019
Landsat 8 Monitors Flooding on the Mississippi River // Suomi NPP VIIRS Used to Detect Wildfires Across the UK in 2019
May 8, 2019
This interactive GIS map from the NASA Disasters Mapping portal lets you view Suomi NPP VIIRS "Black Marble" imagery before and after Cyclone Fani hit the region. This data helps disaster responders track which regions were affected by power outages. VIIRS Black Marble imagery of nighttime lights in Bhubaneswar India, comparing April 30th and May 5th 2019. Credit: NASA Earth Observatory, Ranjay Shrestha / NASA GSFC In early May 2019, Tropical Cyclone Fani tore through the state of Odisha in eastern India as one of the worst storms to hit the country since 1999. The cyclone brought winds of more than 200 kilometers (120 miles) per hour when it made landfall on the morning of May 3. The storm caused several deaths and left millions of people homeless in the cities of Puri, Bhubaneswar, Cuttack, and Khurda. Fani also damaged or destroyed energy infrastructure and many buildings, leaving around 3.5 million households without electric power for days after the storm hit. The images on this page are data visualizations of where the lights went out across some of the worst affected areas in Odisha. The images show city lighting on April 30 (before the storm) and May 5, 2019, two days after Fani made landfall. The images above show Bhubaneswar, the capital and largest city in the state. The images below show nighttime lights in Cuttack, the second largest city, which lies just north of Bhubaneswar.
May 6, 2019
AIRS Images Cyclone Fani Before Landfall to Analyze Atmospheric Conditions // GPM IMERG Adds up Rainfall from Cyclone Fani
April 25, 2019
"The SAR Handbook: Comprehensive Methodologies for Forest Monitoring and Biomass Estimation" is the culmination of a two-year collaboration between NASA SERVIR and SilvaCarbon. Five trainings, led by six SAR subject matter experts, were held at hubs throughout the SERVIR network. The topics of these trainings included SAR basics, SAR for forest change detection, forest height estimation, biomass estimation, mangrove monitoring, and sampling design. Each of these training topics are covered in a SAR Handbook chapter, which includes the theoretical basics and applied exercises. You can download the entire SAR Handbook (PDF) below, or explore individual chapters, trainings and one-pagers. Each chapter of the SAR Handbook is divided into a theory section, which discusses the scientific background of the chapter topic; a tutorial section, which provides step-by-step instructions on how to put the theory into practice; and additional tutorial materials, which include data, scripts and slideshows necessary to complete the tutorial.
April 16, 2019
Suomi NPP VIIRS Tracks Blizzard in the U.S. Midwest
April 2, 2019
ARIA Team Uses Multiple Satellites to Create Flood Proxy Maps for Mozambique // Landsat 8 Used to Identify Landslides and Flood Areas in Zimbabwe from Cyclone Idai // Suomi NPP VIIRS Detects Hundreds of Wildfires in Venezuela
April 1, 2019
NASA and global humanitarian organization Mercy Corps are partnering to help vulnerable communities in some of the most fragile places on Earth better withstand challenges such as population growth, resource scarcity and climate change. Eighty percent of Nigeriens are subsistence farmers. NASA and Mercy Corps are exploring how NASA’s satellite measurements can help the drought-prone, farming-intensive country create sustainable livelihoods for people like this Nigerien woman watering her garden. Credits: Mercy Corps/Sean Sheridan Under a three-year Space Act Agreement signed on March 29, the partnership will combine NASA’s Earth observation capabilities, including satellite data, imagery, and modeling and analysis, with Mercy Corps’ local insights and development expertise in more than 40 countries. Projects will assist communities in building resilience to complex stresses and making decisions that have long-term benefits for people and the environment. “This partnership enables NASA and Mercy Corps to amplify our collective capacities to reach communities in the most risk-prone regions of the world with the information they need the most,” said David Green, disasters program director in NASA’s Earth Science Division, Washington. “As NASA seeks to expand our understanding of the integrated Earth system from global to local scales, Mercy Corps’ extensive and practical knowledge of the human element – social, environmental, economic and political – is critical.”
March 26, 2019
VIIRS "Black Marble" Product Used to Track Damage and Power Outages from Cyclone Idai // ESA Sentinal-1 SAR Data Used to Gauge Extent of Flooding in the Midwest // GPM IMERG Adds Up Rainfall from Cyclone Idai to Monitor Flooding in Mozambique