NASA Satellites, Space Station Crew Capture Images From Southern California Wildfires

By  //  December 7, 2017

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Thick smoke was streaming from several fires in southern California when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired a natural-color image in the afternoon on December 5. (NASA Image)

(NASA) – Thick smoke was streaming from several fires in southern California when the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired a natural-color image in the afternoon on December 5.

The largest of the blazes—the fast-moving Thomas fire in Ventura County—had charred more than 65,000 acres (24,000 hectares or 94 square miles), according to Cal Fire. Smaller smoke plumes from the Creek and Rye fires are also visible.

On the same day, the Multi Spectral Imager (MSI) on the European Space Agency’s Sentinel-2 satellite captured the data for a false-color image (below) of the burn scar.

Active fires appear orange; the burn scar is brown. Unburned vegetation is green; developed areas are gray. The Sentinel-2 image is based on observations of visible, shortwave infrared, and near infrared light.

The fires mainly affected a forested, hilly area north of Ventura, but flames have encroached into the northern edge of the city. On December 6, 2017, Cal Fire estimated that at least 12,000 structures were threatened by fire. (NASA Image)

The fires mainly affected a forested, hilly area north of Ventura, but flames have encroached into the northern edge of the city. On December 6, 2017, Cal Fire estimated that at least 12,000 structures were threatened by fire.

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Powerful Santa Ana winds fanned the flames. Forecasters with the Los Angeles office of the National Weather Service warned that the region is in the midst of its strongest and longest Santa Ana wind event of the year. They issued red flag warnings for Los Angles and Ventura counties through December 8, noting that isolated wind gusts of 80 miles (130 kilometers) per hour are possible.

A prolonged spell of dry weather also primed the area for major fires. This week’s winds follow nine of the driest consecutive months in Southern California history, NASA Jet Propulsion Laboratory climatologist Bill Patzert told the Los Angeles Times.

“Pile that onto the long drought of the past decade and a half, [and] we are in apocalyptic conditions,” he said.

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