Irregular Events

This page provides information on the following Himawari-9/AHI event logs.

Information of incomplete imagery

2025-2-28 00:10 UTC (P001)
    Due to a ground system failure, Himawari-9/AHI band 12 (9.6 μm) image quality was degraded.
2025-2-14 04:40 UTC (P028) -
    The quality of the data in some products using band 12 (9.6 μm) may be degraded due to the Moon's radiation entering the sensor.
2025-2-12 17:40 UTC (P106)
    Stripes for E-W direction due to an abnormal detector outputs appeared in Himawari-9/AHI band 12 (13.3 μm) data.
2025-1-26 00:10 UTC (P001)
    Due to a ground system failure, all Himawari-9/AHI imagery data were missing.
2025-1-21 16:30 UTC (P099) - 17:40 UTC (P106)
    Due to Himawari-9 maintenance period expansion, Himawari-9/AHI observations were cancelled.
    Refer to "Himwari-9 maintenance"
2025-1-19 09:40 UTC (P058) - 11:20 UTC (P068)
    Due to ground system failure, some of Himawari-9/AHI imagery data and products were not disseminated. In addition, some of imagery data and products disseminated were possibly occurred quality degradation.
2024-12-12 02:50 UTC (P017) - 03:20 UTC (P020)
    Due to a ground system failure, Himawari-9/AHI imagery data were not disseminated to HimawariCast.
2024-12-6 17:50 UTC (P107) - 12-9 07:40 UTC (P046)
    Stripes for E-W direction due to an abnormal detector outputs appeared in Himawari-9/AHI band 9 (6.9 μm) data.
2024-11-10 19:50 UTC - 2024-11-11 09:00 UTC
    Due to spacecraft anomaly image quality was degraded.
2024-10-19 14:50 UTC - 16:00 UTC
    Due to a failure on the ground system, a part of the LRIT data was not disseminated.
2024-10-12 02:50 UTC - 2024-10-13 01:07 UTC
    Due to a failure on the ground system, uploading of Himawari-9/AHI imagery data to HimawariCloud was delayed.
2024-7-22 20:10 UTC (P134) - 7-23 07:30 UTC (P045)
    Stripes for E-W direction due to an abnormal detector outputs appeared in Himawari-9/AHI band 12 (9.6 μm) data.
2024-04-11 03:00 UTC (P018) - 03:10 UTC (P019)
    Due to ground system failure, degradation of image navigation performance occurred.
2024-01-29 07:10 UTC - 07:40 UTC
    Due to JCSAT-2B ground system failure, Himawari-9/AHI imagery data were not disseminated to HimawariCast.
2023-10-17 00:10 UTC (P001) - 10-19 01:10 UTC (P007)
    Stripes for E-W direction due to an abnormal detector outputs appeared in Himawari-9/AHI band 8 (6.2 μm) data.
2023-07-28 18:30 UTC (P112)
    Due to spacecraft anomaly, some image data of region scan (full-disk, R1) were missing.
2023-6-11 15:59 UTC - 16:43 UTC
    Due to emergency maintenance on the ground systems, uploading of Himawari-9/AHI imagery data to HimawariCloud was delayed.
2023-3-22 14:38 UTC - 15:15 UTC
    Due to system failure on the ground systems, uploading of Himawari-9/AHI imagery data to HimawariCloud was delayed.
2023-3-10 00:35 UTC - 01:25 UTC
    Due to system failure on the ground systems, uploading of Himawari-9/AHI imagery data to HimawariCloud was delayed.
2023-3-8 10:35 UTC - 10:58 UTC
    Due to system failure on the ground systems, uploading of Himawari-9/AHI imagery data to HimawariCloud was delayed.
2023-02-10 05:10 UTC (P031)
    Due to a ground processing failure, stripes for E-W direction appeared in Himawari-9/AHI band 16 (13.3 μm) data.
2023-02-02 07:10 UTC (P043) and 07:50 UTC (P047)
    Due to a ground system failure, Himawari-9/AHI imagery data were not disseminated to HimawariCast.
2022-12-20 12:18 UTC - 12:29 UTC
    Due to system failure on the ground systems, uploading of Himawari-9/AHI imagery data to HimawariCloud was delayed.

Processing Events

2025-03-24 03:00 UTC
2017-07-25 04:00 UTC

Data Outages