VIIRS views volcanic activity at Nishinoshima in the western Pacific
NOAA-20 VIIRS Day Night Band Visible (0.70 µm) imagery, 1603 UTC 19 April 2020, Click to enlarge)
Nishinoshima is a small volcanic island (at 27.2471° N, 140.8779° E) about 150 km west of Chichijima.) Nishinoshima has grown in size over the past decades because of volcanic activity, including activity (apparently accompanied by occasional earthquakes) that started in March 2020. Day Night Band imagery from NOAA-20, above, (toggled with an annotated image) shows the light from the ongoing volcanic activity on 19 April 2020 (Clean Window Infrared imagery also showed a heat source). (Day Night Band imagery is also available here, from NASA Worldview)
Many thanks to Brandon Aydlett, WFO Guam, for the imagery.
The toggle below (imagery courtesy William Straka, CIMSS), shows more NOAA-20 VIIRS data from the same NOAA-20 pass: Day Night Band Imagery, 3.75 µm Shortwave Infrared imagery (Band I04), 1.61 µm near-infrared imagery (Band M10) and 2.26 µm (Band M11), 4.05 µm Shortwave Imagery (Band M13), and the VIIRS Active Fire Product. All show evidence of the hot spot over the volcano.
NOAA-20 VIIRS Imagery at 1607 UTC on 19 April 2020: Day Night Band (0.7 µm) Visible Imagery, I04 Band (3.75 µm Shortwave Infrared), M10 Band (1.61 µm Near Infrared), M11 Band (2.25 µm Near-Infrared), M13 Band (4.05 µm Shortwave Infrared) and the VIIRS Active Fire Product (Click to enlarge)