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This map overlays georegistered mosaics of thermal images collected during a helicopter overflight of the three areas of breakouts near Pu‘u ‘Ō‘ō on April 3. The perimeter of the flow at the time the imagery was acquired is outlined in yellow. Temperature in the thermal mosaics is displayed as gray-scale values, with the brightest pixels indicating the hottest areas (white areas are active breakouts).