Earth scientists around the world use NASA satellite imagery to better understand the causes and effects of natural hazards. The goal in sharing these images is to help people visualize where and when natural hazards occur, and to help mitigate their effects. All images in this section are freely available to the public for re-use or re-publication (please use credits as indicated for each image). More images can be found in our archive of older events. Check out our related links.

This Week's Events

	Fires: Fires in California "Dry" thunderstorms triggered hundreds of fires in California on the first day of summer 2008. The fires continued to burn in late July. 22 Images, Updated: July 23, 2008
	Severe Storms: Hurricane Dolly Tropical Storm Dolly formed in the Caribbean Sea between Honduras and Cuba on July 20, 2008. By July 23, it was a Category 1 hurricane in the Gulf of Mexico. 3 Images, Updated: July 23, 2008
	Volcanoes: Okmok Volcano Erupts Okmok Volcano, in Alaska's Aleutian Islands, released a continuous plume of ash and steam in early July 2008. 2 Images, Updated: July 22, 2008
	Severe Storms: Tropical Storm Cristobal Tropical Storm Cristobal was the third named storm in the 2008 Atlantic storm season. 1 Image, Posted: July 22, 2008
	Severe Storms: Hurricane Fausto Hurricane Fausto formed in the Eastern Pacific ocean off Central America on July 16, 2008. Travelling westward over warmer waters, the storm gathered strength, reaching hurricane status by July 18. 1 Image, Posted: July 22, 2008
	Volcanoes: Chaiten Volcano Erupts Dormant for more than 9,000 years, the Chaiten Volcano in southern Chile began to erupt on May 2, 2008, forcing thousands of residents from their homes. More than two months later, the volcano remained active. 19 Images, Updated: July 21, 2008
	Dust & Smoke: Beijing Implements New Pollution Controls As Beijing prepared to host the Olympics August 8-24, 2008, and the Paralympics September 6-17, 2008, authorities implemented new procedures to reduce pollution. 1 Image, Posted: July 21, 2008
	Fires: Fires in Southeastern Russia Over 15,000 hectares of forest were on fire in eastern Russia in mid- to late June 2008. A huge river of smoke spread south and east from the fires on July 2. 4 Images, Updated: July 18, 2008
	Severe Storms: Hurricane Elida Hurricane Elida formed in the Eastern Pacific Ocean off the Central American coast on July 12, 2008. As is the case with most storm systems that form in this region, it traveled westward, pulling away from the coast. 2 Images, Updated: July 18, 2008
	Severe Storms: Typhoon Kalmaegi Typhoon Kalmaegi was grazing the Pacific-facing coast of Taiwan in the morning hours of July 17, 2008. 2 Images, Updated: July 18, 2008
	Fires: Fires in Argentina, Paraguay Hundreds of fires, probably related to land clearing or agriculture, burned in Argentina and Paraguay in mid-July 2008. 1 Image, Posted: July 17, 2008

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