Daytime natural color combines ABI band 1 blue (0.47 µm), band 2 red (0.64 µm), and band 3 near-IR (0.86 µm). Green is simulated because ABI has no green-visible band. Band 13 (10.3 µm) supplies nighttime infrared brightness temperature.
Auto uses the Sun’s position at each location and observation time. Natural color is available only in daylight; clouds can obscure the surface. Daytime color swatches describe the scene and are not a numeric scale. The IR grayscale legend shows brightness temperature.
Infrared-only imagery starts at 80% opacity so the map remains visible beneath it. Visible imagery starts at 100%. Moving the opacity slider keeps your chosen setting across frames and products.
New observations are selected every five minutes. NOAA delivery and processing add some delay. A complete 12-hour window has 144 observations: the first and last are 11 hours 55 minutes apart. The available coverage and any missing observations are reported below.
The available loop fills in as observations are processed.
Viewer 1.4.0
NOAA channel information
