897
NOUS72 KNES 162004
ADMNES
*TOPIC:* NOAA-15 AND NOAA-19 AVHRR CHANNEL 3A / 3B SWITCHING DEACTIVATION
OVER ALASKA REGION

*DATE/TIME ISSUED:* MAY 16 2025 2000Z

*PRODUCT(S) OR DATA IMPACTED: *NOAA-15 AND NOAA-19 AVHRR DATA OVER ALASKA
REGION

*DATE/TIME OF INITIAL IMPACT:* MAY 15, 2025 22:44:16 UTC

*DATE/TIME OF EXPECTED END:* UNTIL POES DECOMMISSIONING SEP, 2025

*LENGTH OF OUTAGE:* SEE DETAILS BELOW; ROUGHLY 4 MONTHS

*DETAILS/SPECIFICS:  *
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, 2025 UNTIL POES DECOMMISSIONING IN SEPTEMBER, 2025.
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 MAY 15, 2025 135/20:51:42 TO 135/20:54:45

LAST NOAA-19 CONTACT 19 MAY 15, 2025 135/22:36:37 TO 135/22:44:16

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
HTTP://WWW.SSD.NOAA.GOV/PS/SATS/MESSAGES.HTML FOR THIS AND OTHER SATELLITE
RELATED MESSAGES.

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