There has been no change to the level of natural disaster risk for Bali and quakes remain impossible to predict with any accuracy.
Indonesia's National Disaster Mitigation Agency says the death toll from the quake on Lombok has risen to 91 and could rise further as rescuers still haven't reached some of the worst affected areas in the north of the island.
Nugroho told a news conference damage was "massive" in the north of Lombok.
Indonesian soldiers and rescue teams preparing to evacuate tourists from Mount Rinjani on July 30, 2018.
Visitors on Lombok were enjoying a quiet warm evening when a 7.1 quake hit.
Lombok International Airport suffered little damage and reopened on Monday morning, but national flag carrier Garuda Indonesia said several of its flights may be delayed.
Chrissy Teigen who is vacationing in nearby Bali witnessed the quake first hand from relatively safe distance.
Airports on both Lombok and Bali are both operating normally despite some minor damage - at Bali's Denpasar airport some ceiling panels were shaken loose by the tremors.
"As with any natural disaster we encourage our customers at the destination to exercise caution, listen carefully to and follow the direction of local authorities".
Power and communications were cut in some areas of Lombok, and the military said it was sending in a vessel with medical aid, supplies and logistical support for the island.
CNN quoted National Disaster Management Agency spokesman Sutopo Purwo Nugroho saying that 689 people were trapped on and around the 3,726 meter (12,224 ft) mountain following the shallow 6.4-magnitude quake that struck Sunday morning.
The Indonesian Agency for Meteorology, Climatology and Geophysics said more than 120 aftershocks were recorded, including a tremor so powerful it was felt on the neighbouring island of Bali, where two people died.
An American visitor in Bali said: I'm truly humbled with this Lombok quake. Her live-Tweeting brought the natural disaster to the attention of many in the Western Hemisphere. Around 1,000 tourists, including some Japanese, were stranded on a mountain as landslides blocked a trekking road.
Denink Ayu, a hotel receptionist on Gili Trawangan, the biggest of the three Gilis, told CNN Indonesia that "everybody was panicking" after the quake hit.
Camera IconLocals on the island of Lombok are too scared to return to their homes.
Facilities at Lombok's main airport were also unaffected, although passengers were briefly evacuated from the main terminal.