Irregular Events

This page provides information on the following Himawari-8/AHI event Logs.

Information of incomplete imagery

2021-02-07 03:20 UTC (P021)
    Stripes for E-W direction due to spacecraft anomaly appeared in Himawari-8/AHI band 12 (9.6 μm) data.
2020-12-14 18:20 UTC (P110) - 21:50 UTC (P131)
    Due to an anomaly on the communication line between JCSAT-2B and the ground system, Himawari Cast users were unable to receive data.
2020-10-18 19:40 UTC (P118)
    Image data of full-disk and region scan (R2) were incomplete due to spacecraft anomaly.
2020-08-16 11:10 UTC (P067)
    Image quality of band 12 degradation due to spacecraft anomaly.
2020-03-23 19:30 UTC - 2020-03-24 02:50 UTC
    Due to system failure on the MSC ground system, Himawari-8/AHI imagery data were not disseminated.
    Only HimawariCast and HimawariCloud have resumed service at 20:30 UTC on 23 March 2020.
2020-03-21 00:10 to 01:50 UTC (P001 - P012)
    Image quality degradation due to spacecraft anomaly
2019-12-28 06:40 to 07:30 UTC (P041 - P046)
    Image quality degradation due to spacecraft anomaly
2019-11-09 22:20 - 2019-12-10 00:30 UTC
    Due to system anomaly on the MSC ground system, HimawariCast users were occasionally unable to receive data and HimawariCloud users were occasionally delayed in accessing data during 22:20 UTC on 9 November 2019 to 00:30 UTC on 10 November 2019.
2019-08-24 05:00 UTC - 2019-12-17 04:00 UTC
    Due to abnormal detector outputs in Himawari-8/AHI band 12 (9.6 μm), anomalies appear in the following imagery: Image list
2019-08-24 05:00 UTC - 09-05 01:00 UTC
    Stripes for E-W direction due to an abnormal detector outputs appeared in Himawari-8/AHI band 12 (9.6 μm) data.
2019-05-16 16:00 - 22:00 UTC
    Due to system anomaly on the HimawariCloud service, NMHSs users were not able to access the data occasionally during 16:00 UTC to 22:00 UTC on 16 May 2019.
2019-05-15 21:50 - 2019-12-17 04:00 UTC
    Stripes for E-W direction due to an abnormal detector outputs appeared in Himawari-8/AHI band 11 (8.6 μm) data intermittently.
2019-03-28 02:30 - 02:40 UTC (P015 - P016)
    All image data (full-disk, R1, R2, R3, R4, R5) were missing due to ground system anomaly (network error).
2019-03-26 05:30 UTC (P033)
    Image data of full-disk and region scan (R2) were incomplete, some image data of region scan (R4, R5) were missing due to spacecraft anomaly.
2019-02-05 03:40 UTC (P022)
    Image data of full-disk and region scan (R2) were incomplete, some image data of region scan (R4, R5) were missing due to ground system anomaly.
2019-02-05 02:30 UTC (P015)
    Image data of full-disk were incomplete, some image data of target-area (R3) and region scan (R4, R5) were missing due to ground system anomaly.
2019-02-05 00:20 UTC (P002)
    Image data of full-disk and region scan (R2) were incomplete, some image data of region scan (R4, R5) were missing due to ground system anomaly.
2019-02-04 23:30 UTC (P141)
    Image data of full-disk and region scan (R2) were incomplete, some image data of target-area (R3) and region scan (R4, R5) were missing due to ground system anomaly.
2019-02-04 23:10 UTC (P139)
    Image data of full-disk and region scan (R2) were incomplete, some image data of target-area (R3) and region scan (R4, R5) were missing due to ground system anomaly.
2019-02-01 03:40 UTC (P022)
    Image data of full-disk and region scan (R2) were incomplete, some image data of target-area (R3) and region scan (R4, R5) were missing due to ground system anomaly.
2019-01-23 11:30 UTC (P069)
    Image data of full-disk, region scan (R2) and target-area (R3) were incomplete, some image data of region scan (R4, R5) were missing due to ground system anomaly.
2019-01-22 03:20 UTC (P020)
    Image data of full-disk and region scan (R1) were incomplete, some image data of region scan (R3, R4, R5) were missing due to ground system anomaly.
2019-01-08 11:30 UTC (P069)
    Image data of full-disk, region scan (R2) and target-area (R3) were incomplete, some image data of region scan (R4, R5) were missing due to ground system anomaly.
2018-11-28 05:50 UTC (P035)
    Image data of full-disk, region scan (R2) and target-area (R3) were incomplete, some image data of region scan (R4, R5) were missing due to ground system anomaly.
2018-11-26 14:20 UTC (P086)
    Image data of full-disk, region scan (R1) and target-area (R3) were incomplete, some image data of region scan (R4, R5) were missing due to ground system anomaly.
2018-10-13 21:20 UTC (P128)
    Image data of full-disk and region scan (R1) were incomplete due to lack of telemetory.
2018-10-13 14:20 UTC (P086)
    Image data of fill-disk were incomplete due to sun avoidance function of AHI.
2018-08-21 22:00 UTC (P132)
    Image data of full-disk were missing due to a noise on communication devices.
2018-07-30 15:20 UTC (P092)
    Image data of full-disk and region scan (R2) were incomplete, some image data of region scan (R4, R5) were missing due to ground system anomaly.
    Image quality degradation appeared after the missing.
2018-07-25 16:00 UTC (P096)
    Image data of full-disk and region scan (R2) were incomplete, some image data of region scan (R4, R5) were missing due to a noise on communication devices.
2018-07-18 20:30 UTC (P123)
    Image data of full-disk and target-area (R3) were incomplete due to temporary level down of communication link between satellite and ground systems.
2018-07-03 15:20 UTC (P092)
    Image data were incomplete due to ground system anomaly.
2018-06-10 08:40 UTC (P052)
    Image data were incomplete due to spacecraft anomaly.
2018-3-10 04UTC - 2018-3-27 02UTC
    Occasional image quality degradation mainly related with image navigation due to spacecraft anomaly
2017-11-16 08:00 - 11:20 UTC (P049 - P068)
    Image quality degradation due to spacecraft anomaly
2017-11-11 02:50 to 04:20 UTC (P017 - P026)
    Image quality degradation due to spacecraft anomaly
2017-11-09 12:20 UTC (P074)
    Image data are incomplete due to ground system anomaly.
2017-10-22 13:00 UTC (P078)
    Image data are incomplete due to a noise on communication devices.
2017-09-13 10:40 to 11:30 UTC (P064 - P069)
    Image quality degradation due to spacecraft anomaly
2017-06-19 16:00 UTC (P096)
    Image data are incomplete due to spacecraft and ground system anomaly
2017-04-10 02:50 UTC
    Image quality degradation in 1st scene of Japan Area scan due to ground system anomaly.
2017-04-03 18:40 UTC (P112)
    Image data are incomplete due to spacecraft and ground system anomaly
2017-04-03 10:30 to 12:20 UTC (P064 - P074)
    Image quality degradation due to spacecraft anomaly
2017-01-06 19:30 to 2017-01-10 07:00 UTC
    Stripes for E-W direction due to an abnormal detector outputs in Himawari-8/AHI band 8 (6.2 micron) data.
2017-01-01 00:00 to 00:10 UTC
    Image anomaly in fulldisk at 00:00 and 00:10UTC and 1st scene of Japan area scan at 00:10UTC, missing at 4th scene of target area scan at 00:00UTC, due to the ground system anomaly
2016-11-14 04:40 to 07:30 UTC
    Due to the ground system failure, events that the line number included in "Observation time information block" of HSD data and "Image Observation Time Header" of HRIT data becomes invalid value has occurred in some part of the segment.
2016-09-30 15:30 to 16:50 UTC
    Image quality degradation due to spacecraft anomaly
2016-08-30 04:50 to 05:20 UTC
    Image quality degradation due to ground system
2016-04-14 14:40 UTC
    Image anomaly in 1st scene of Target scan due to ground system
2016-04-03 04:10 to 05:40 UTC
    Image quality degradation due to spacecraft anomaly
2015-12-18 07:10 to 08:30 UTC (P043 - P051)
    Unscheduled pause due to spacecraft and ground system anomaly
2015-11-12 20:00 to 23:00 UTC
    Image quality degradation due to spacecraft anomaly

Processing Events

2020-07-13 07:00 UTC
2019-07-08 07:10 UTC
2018-07-09 07:00 UTC
2017-07-25 04:00 UTC
2017-01-10 07:10 UTC
    Update of Himawari-8 ground processing system
  • Updating the resampling process to exclude the abnormal detector outputs of band 8 for generating Himawari Standard Data.
2016-11-16 05:00 UTC
2016-03-09
    Processing algorithm updates at the ground segment
  • Implementation of coherent noise reduction processing (05:00 UTC)
  • Improvement of band-to-band co-registration algorithm for infrared bands (05:00 UTC)
  • Improvement of resampling processing (02:00 UTC)
  • Bug fix for header information in Himawari Standard Data (02:00 UTC)

Data Outages