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NOAA APT weather satellite images recorded by VA3ROM at Thunder Bay, Canada.


Coordinates (latitude, longitude): 48.450, -89.200 (Grid: EN58jk)
Receiver: RTL-SDR USB dongle
Antenna : Reactive turnstile (Ch. 5, Modern Antenna Design) with LNA

APT     APT Satellite Operational Status     Group for Earth Observation     W0MM (Houston) + APT Links


Contrast (IR) Enhanced: Uses sensors 3 (mid infrared) and 4 (thermal infrared) of the pristine image creating a black and white, contrast enhanced infrared (IR) image showing areas of cloud coverage and layer opacities. Available for both local daylight and night satellite passes.

Map Coloured Infrared (MCIR) with Precip: Uses sensor 4 of the pristine image creating a false colour IR image using a colour lookup table (CLUT) showing areas of cloud coverage, layer opacities with precipitation probability and/or intensity. Available for both local daylight and night passes

NO colour (IR) Enhanced: Uses sensor 4 of the pristine image creating a false colour IR image using a CLUT. Greatly increases contrast in darker (warmer) land/sea regions, and colours (colder) cloud tops providing an indication of their temperatures. Available for both local daylight and night passes.

Multi-Spectral Analysis (MSA) with Precip: Uses sensors 1 (visible light) or 2 (near IR) plus sensor 4 of the pristine image creating a near true colour, near visible light image with precipitation probability and/or intensity using a CLUT. Available only for local daylight passes when solar elevation > 15 degrees.

Sea Surface Temperature (SST): Uses sensors 3 and 4 of the pristine image creating a false colour IR image using a CLUT. Only sea temperatures are imaged so any cloud cover blocking the view is coloured white and land is coloured black (their IR temperatures are ignored). Available for both local daylight and night passes.

Thermal: Uses sensors 3 and 4 of the pristine image creating a false colour IR image using a CLUT. Normally, only cloud tops are imaged, but if no clouds are in the way then land and water surface are imaged. Available for both local daylight and night passes.

"Liberty does not exist in the absence of morality. Edmund Burke"

Click any satellite image for full size view. Local dates and times are for the Eastern Time Zone.

Composite contrast
Composite contrast
20 Apr 2018 08:50

Composite MCIR-precip
Composite MCIR-precip
20 Apr 2018 08:50

Composite NO
Composite NO
20 Apr 2018 08:50

Composite sea
Composite sea
20 Apr 2018 08:50

Composite therm
Composite therm
20 Apr 2018 08:50

NOAA 18 Pristine
NOAA 18 Pristine
20 Apr 2018 08:50

Next Scheduled Satellite Passes over Thunder Bay, Canada

Satellite
Name
Start of Pass Time Available Direction Maximum Elevation
Degrees (East or West)
Frequency
MHz
UTC Local Time UTC Local Time
NOAA 18 20 Apr 14:29 20 Apr 10:29 20 Apr 14:46 20 Apr 10:46 137.9125
NOAA 19 20 Apr 19:58 20 Apr 15:58 20 Apr 20:13 20 Apr 16:13 137.10
NOAA 19 20 Apr 21:38 20 Apr 17:38 20 Apr 21:54 20 Apr 17:54 137.10
NOAA 18 21 Apr 00:19 20 Apr 20:19 21 Apr 00:36 20 Apr 20:36 137.9125
NOAA 18 21 Apr 02:01 20 Apr 22:01 21 Apr 02:16 20 Apr 22:16 137.9125
NOAA 19 21 Apr 09:55 21 Apr 05:55 21 Apr 10:12 21 Apr 06:12 137.10
NOAA 19 21 Apr 11:37 21 Apr 07:37 21 Apr 11:52 21 Apr 07:52 137.10
NOAA 18 21 Apr 14:18 21 Apr 10:18 21 Apr 14:35 21 Apr 10:35 137.9125