NASA satellite images reveal ripples above Hurricane Simon

NASA Earth Observatory’s October 14 image feature shows Hurricane Simon’s influence reaching into the upper atmosphere. A nighttime image from NOAA-21, taken October 11, reveals ripples in faint airglow above the storm.

Lindsey Doermann’s NASA report explains that strong convection near a cyclone’s eyewall can send atmospheric gravity waves upward. These are waves in the atmosphere, distinct from the gravitational waves studied in astronomy.

The satellite’s VIIRS day-night band can detect the faint glow. Limited moonlight made the patterns easier to see that night; upper-atmosphere winds and reflected moonlight can otherwise obscure them.

NASA credits the image to Michala Garrison using VIIRS data from NASA and NOAA satellite systems. Both the event and the image are dated October 11. The feature provides a look at storm physics, rather than a live view of Simon’s present location or strength.

For current watches, warnings and forecasts, consult the National Hurricane Center. Older satellite imagery should not be used to make travel or safety decisions.

Sources

• Lindsey Doermann / NASA Earth Observatory — October14,2026 image feature
• Image: NASA Earth Observatory/Michala Garrison — NOAA-21 VIIRS, October11,2026; NASA/NOAA data; crop/vector
• National Hurricane Center — current forecasts and alerts
• NASA editorial image-use guidance