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TOPIC: GOES-18 SUVI FLAT FIELD CALIBRATIONS

DATE/TIME ISSUED: SEPTEMBER 25, 2026 1920Z

PRODUCT(S) OR DATA IMPACTED: GOES-18 SUVI AND EXIS PRODUCT OUTAGE

DATE/TIME OF INITIAL IMPACT: OCTOBER 02, 2026 (DOY 275) 0140Z

DATE/TIME OF EXPECTED END: OCTOBER 07,  2026  (DOY 280) 1027Z

LENGTH OF OUTAGE: 42 TO 99 MINUTES EACH DAY, SEE DETAILS

DETAILS/SPECIFICS:

DURING THE PERIOD OF  OCTOBER 02 - OCTOBER 07, 2026, GOES18 SUVI FLAT FIELD
CALIBRATIONS WILL BE RUN EACH DAY WITH EACH DAY BEING A SEPERATE FLAT FIELD
CHANNEL. ALL SUVI PRODUCTS WILL EXPERIENCE AN OUTAGE DURING THE
CALIBRATION. ALL EXIS PRODUCTS WILL BE FLAGGED FOR OFFPOINT DURING THE
CALIBRATION. THE OUTAGES ARE LISTED INDIVIDUALLY FOR EACH DAY:

094A - OCTOBER 02, 2026 - 0140 UTC TO 0319 UTC - 99 MINUTES

131A -   OCTOBER 03, 2026 - 0945 UTC TO 1027 UTC - 42 MINUTES

171A -   OCTOBER 04, 2026 - 0945 UTC TO 1027 UTC - 42 MINUTES

195A -   OCTOBER 05, 2026 - 0945 UTC TO 1027 UTC - 42 MINUTES

284A -  OCTOBER 06, 2026 - 0945 UTC TO 1027 UTC - 42 MINUTES

304A -  OCTOBER 07, 2026 - 0945 UTC TO 1027 UTC - 42 MINUTES

CONTACT FOR FURTHER INFORMATION: ESPC OPERATIONS: ESPCOPERATIONS@NOAA.GOV
 OR 301-817-3880 <(301)%20817-3880>; GOES PAYLOAD ENGINEERING: 301-817-4409
<(301)%20817-4409>

WEB SITE(S) FOR APPLICABLE INFORMATION:

SEE HTTPS://WWW.OSPO.NOAA.GOV/OPERATIONS/MESSAGES.HTML
 FOR THIS AND OTHER
SATELLITE RELATED MESSAGES.

THIS NOTIFICATION WAS SENT TO ESPC.NOTIFICATION@NOAA.GOV, A MAILING LIST
YOU ARE SUBSCRIBED TO. IF YOU WISH TO UNSUBSCRIBE, PLEASE CONTACT ESPC
HELP-DESK AT ESPCOPERATIONS@NOAA.GOV WITH YOUR REQUEST. PLEASE NOTE: IT MAY
TAKE UP TO TWO BUSINESS DAYS TO PROCESS YOUR REQUEST. FOR ANY ADDITIONAL
INFORMATION YOU CAN REACH ESPC AT 301-817-3880 <(301)%20817-3880> (24X7)

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