NOAA GOES Image Viewer website
27 Jan 2023 - 03:13 EST
27 Jan 2023 - 08:13 UTC

GOES-West - Sector view: Alaska - Nighttime Microphysics

2 hour loop - 12 images - 10 minute update

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Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0550 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0550 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0600 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0600 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0610 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0610 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0620 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0620 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0630 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0630 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0640 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0640 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0650 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0650 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0700 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0700 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0710 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0710 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0720 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0720 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0730 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0730 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0740 UTC
Nighttime Microphysics - RGB to distinguish clouds from fog - 27 Jan 2023 - 0740 UTC Latitude / Longitude grid

This RGB will be phased out around 1 Feb 2023 and will be replaced by the Day Night Cloud Micro Combo RGB.

Nighttime Microphysics RGB The distinction between low clouds and fog in satellite imagery is challenging. While the difference between the 10.4 and 3.9 μm channels has been a regularly applied product to meet aviation forecast needs, the Nighttime Microphysics (NtMicro) RGB adds another channel difference (12.4- 10.4 μm) as a proxy to cloud thickness and repeats the use of the 10.4 μm thermal channel to enhance areas of warm (i.e. low) clouds where fog is more likely. The NtMicro RGB is also an efficient tool to quickly identify other cloud types in the mid and upper atmosphere.

• For more details, see the Nighttime Microphysics RGB Quick Guide, (PDF, 1.41 MB)