She tweeted: “The seismic activity, steam activity in a crater, and thermal signatures seen in satellite information have all decreased.
“These intensity hazards remain: pyroclastic flows, lahars, lava flows, ashfall.
“With a reduced activity and threat, a risk section has been reduced to a 6 to 7.5 km radius. This will continue to be evaluated.
“If an tear does occur, ashfall can extend over a jeopardy zone. If an tear occurs and complicated rainfall, lahars might also occur.”