Topic:  NOAA-15 and NOAA-19 AVHRR Channel 3A / 3B Switching Deactivation over Alaska Region


Date/Time Issued:  May 14, 2021 0116Z


Product(s) or Data Impacted:  NOAA-15 and NOAA-19 AVHRR data over Alaska Region


Date/Time of Initial Impact:  May 15, 2021 1955Z


Date/Time of Expected End:  September 15, 2021


Length of Outage: See details below; roughly 4 months


Details/Specifics of Change:  NESDIS Office of Satellite and Product Operations (OSPO) engineers will deactivate switching for NOAA-15 and NOAA-19 AVHRR Channel 3A / 3B for the period of May 15, 2021 to September 15, 2021.  Switching to Channel 3A will not occur during this period over the predefined box encompassing the Alaska Region (box coordinates 50°N to 75°N and 173°E to 135°W).  NOAA-15 and NOAA-19 AVHRR will remain in Channel 3B (3.7 microns) to support fire detection and monitoring activities over Alaska Region.


Last NOAA-15 contact 15  F  19661  May 15, 2021 135/19:55:10  135/20:02:51  461


Last NOAA-19 contact 19  F  63232  May 15, 2021 135/20:15:40  135/20:20:31  291


Channel switching will start after Sept 15, 2021 for the end of fire season.  A reminder notification will be sent.

The coordination for the activation and deactivation of switching for NOAA-15 and NOAA-19 AVHRR Channel 3A / 3B is a collaborative effort between NESDIS OSPO, National Weather Service (NWS) Alaska Region, University of Alaska - Geographic Information Network of Alaska (GINA), and the NWS Fire Weather Service Manager and is intended to seasonally optimize the Fire Weather and Cryosphere observing posture for Alaska.

Web Site(s) for applicable information: See for this and other satellite related messages.

Contact Information for Further Information: ESPC Operations at at 301-817-3880

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