Satellite Alert Messages

The following messages give you information about NOAA's satellite operations, including various product changes, upgrades and outages.
Visit often for the latest information affecting data delivery.

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This page shows the 100 most recent messages. To view older messages, please choose the year and month from the menu above.


Last Update:   Apr 24, 2026 20:19 UTC

blue ball =?UTF-8?Q?Product_Outage=2FAnomaly=3A_EUMETSAT_0=C2=B0_MSG_Service_Iss?= =?UTF-8?Q?ued_=2D_April_24=2C_2026_2005Z?=
blue ball Administrative: Update #3: GCOM-W1 AMSR2 Data/Products Geolocation Issues - Issued: April 24, 2026 1830 UTC
blue ball =?UTF-8?Q?Administrative=3A_Update_=232_=2D_Termination_of_Satellite?= =?UTF-8?Q?_Analysis_Branch=E2=80=99s_Manual_Dvorak_Estimates_in_the_North_At?= =?UTF-8?Q?lantic=2C_Central_Pacific=2C_and_East_Pacific_on_May_10=2C_2026_=2D_?= =?UTF-8?Q?Issued_April_24=2C_2026_1400_UTC?=
blue ball Product Anomaly/Outage: NPP Missing Data - Issued: April 24, 2026 0726Z
blue ball Product Anomaly/Outage: Update #1:GCOM-W1 SMD Data Delivery Delayed- Issued: April 24, 2026 0650Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 24, 2026 - Issued: April 24, 2026 0636Z
blue ball Administrative: GOES West MDS Meso-1 Scheduled for April 24, 2026 - Issued: April 24, 2026 0634Z
blue ball Product Anomaly/Outage: GCOM-W1 SMD Data Delivery Delayed- Issued: April 24, 2026 0412Z
blue ball Administrative: Update #1: Product Distribution and Access (PDA) Planned Annual PDA Continuity of Operations (COOP) Exercise, beginning May 04, 2026 1230Z - Issued: April 23, 2026 2026Z
blue ball Product Outage/Anomaly: Update #1: Metop-C Snowfall Rate, SFR, Outage Issued: April 23, 2026 2006Z
blue ball Administrative: GOES-19 EXIS Off-point Calibration (impacts EXIS, SUVI, and CCOR data) scheduled for April 29, 2026 - Issued: April 23, 2026 1920Z
blue ball Administrative: Update #2: GCOM-W1 AMSR2 Data/Products Geolocation Issues - Issued: April 23, 2026 1920 UTC
blue ball Product Outage/Anomaly: Update #1 EUMETSAT : Sentinel-3A Service - Issued: April 23, 2026 1509Z
blue ball Administrative: GOES East MDS Meso-2 Scheduled for April 23, 2026 - Issued: April 23, 2026 1314Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 23, 2026 - Issued: April 23, 2026 1308Z
blue ball Product Anomaly/Outage: Update #1 GCOM-W1 SMD Data Delay Issued: April 23 2026 1103Z
blue ball Product Outage/Anomaly: Alert Message Jason-3 Service Issued April 23, 2026 1053z
blue ball Product Outage/Anomaly: (Correction) Sentinel-3B Service (Data Unavailable) Alert Message 2026-04-23 07:29:52 :: Jason-3 Service Issued April 23, 2026 1046z
blue ball Product Anomaly/Outage: GCOM-W1 SMD Data Delay Issued: April 23 2026 0928Z
blue ball Product Anomaly/Outage: GCOM-W1 SMD Data Delay - Issued April 23, 2026 0927Z
blue ball Product Outage/Anomaly: Sentinel-3B Service (Data Unavailable) Alert Message 2026-04-23 07:29:52 :: Jason-3 Service Issued April 23, 2026 0455Z
blue ball Product Outage/Anomaly: Sentinel-3B Service (Data Unavailable) Alert Message 2026-04-23 07:29:52 :: Jason-3 Service Issued April 23, 2026 0338Z
blue ball SARSAT Outage/Anomaly: Update #1 - Final Update Guam 3 LEO Ground Station Offline, Issued: April 23, 2026, 0102Z
blue ball Product Outage/Anomaly: Sentinel-3B Service (Recovered) Issued April 22, 2020Z
blue ball Product Anomaly/Outage: Update #1: GOES-19 ASOS missing products Issued April 22, 2026 1531Z
blue ball Administrative: NOAA-21 VIIRS Non-Roll Lunar Calibration Scheduled for April 27, 2026 - Issued: April 22, 2026 1437Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 22, 2026 - Issued: April 22, 2026 1242Z
blue ball Administrative: GOES West MDS Meso-1 Scheduled for April 22, 2026 - Issued: April 22, 2026 1236Z
blue ball Product Outage/Anomaly: NOAA-21 SMD Delay - Issued: April 22, 2026 0021Z
blue ball Administrative: GOES-18, 19 - All Products products delivered to AWIPS, PDA -Issued: Apr 21, 2026 2225Z
blue ball Product Anomaly/Outage: GOES-18, 19 - ABI L1b All Bands products delivered to AWIPS, PDA -Issued: Apr 22, 2026 2121Z
blue ball Administrative: GOES-18 and GOES-19 ABI Lunar Trending Calibration Scans Scheduled from April 26 through April 29, 2026 - Issued: April 21, 2026 1955Z
blue ball Administrative: GOES-19 EXIS Cruciform Scan (impacts EXIS, SUVI, and CCOR data) scheduled for April 28, 2026 - Issued: April 21, 2026 1951Z
blue ball Product Outage/Anomaly: DMSP SSMI/S and WSF-M Outage - Issued: April, 21 2026 1922Z
blue ball Administrative: GOES-West MDS Meso 2 - Scheduled for April 21, 2026 - Issued: April 21, 2026 1646Z
blue ball Administrative: Update#1: JPSS Transition of Operations from A-String to C-String on April 21st, 2026 - Issued: April 21, 2026 1957Z
blue ball Administrative: JPSS Transition of Operations from A-String to C-String on April 21st, 2026 - Issued: April 21, 2026 1351Z
blue ball Administrative: Product Distribution and Access (PDA) Planned Oracle Server Patching activities at the NSOF OPS site, beginning April 21st, 1400Z - Issued: April 21st, 2026 1313Z
blue ball Administrative: GOES West MDS Meso-1 Scheduled for April 21, 2026 - Issued: April 21, 2026 1239Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 21, 2026 - Issued: April 21, 2026 1207Z
blue ball Update#1: Product Anomaly/Outage: JPSS N21 SMD Data Delay - Issued: April 20, 2026 2134Z
blue ball Administrative: GOES-19 EXIS FOV Mapping Calibration (impacts EXIS, SUVI, and CCOR data) scheduled for April 27, 2026 - Issued: April 20, 2026 1748Z
blue ball Administrative: GOES-19 ABI desert monitoring calibration scan scheduled for April 27, 2026 - Issued: April 20, 2026 1714Z
blue ball Administrative: GOES-19 ABI Solar Calibration Scan scheduled for April 27, 2026 - Issued: April 20, 2026 1709Z
blue ball Administrative: GOES-18 ABI desert monitoring calibration scan scheduled for April 27, 2026 - Issued: April 20, 2026 1701Z
blue ball Administrative: GOES-18 ABI Solar Calibration Scan scheduled for April 27, 2026 - Issued: April 20, 2026 1646Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 20, 2026 - Issued: April 20, 2026 1500Z
blue ball Administrative: Product Distribution and Access (PDA) Planned Oracle Server Patching activities at the NSOF OPS site, beginning April 20th, 1500Z - Issued: April 20th, 2026 1402Z
blue ball Administrative: GOES West MDS Meso-1 Scheduled for April 20, 2026 - Issued: April 20, 2026 1306Z
blue ball Administrative: GOES East MDS Meso-2 Scheduled for April 20, 2026 - Issued: April 20, 2026 1300Z
blue ball Administrative: GOES EAST MDS Meso-2 Scheduled for April 19, 2026 - Issued: April 19, 2026 1409Z
blue ball Administrative: GOES East MDS Meso-2 Scheduled for April 18, 2026 - Issued: April 18, 2026 1406Z
blue ball Correction: Administrative: GOES East MDS Meso-1 Scheduled for April 18, 2026 - Issued: April 18, 2026 1345Z
blue ball Administrative: GOES West MDS Meso-1 Scheduled for April 18, 2026 - Issued: April 18, 2026 1336Z
blue ball Product Anomaly/Outage: GOES-18 - ABI L1b Bands 02, 08 products delivered to AWIPS, GRB, PDA -Issued: Apr 18, 2026 0547Z
blue ball Product Outage/Anomaly: Update #1 - GCOM-W1 SMD Data Delay- Issued April 18, 2026 0420Z
blue ball Product Outage/Anomaly: GCOM-W1 SMD Data Delay- Issued April 18, 2026 0255Z
blue ball Administrative: Update #1: Critical Weather Day Declared for April 17, 2026 - Issued: April 18, 2026 1210Z
blue ball Administrative: GOES East MDS Meso-2 Scheduled for April 17, 2026 - Issued: April 17, 2026 0944Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 17, 2026 - Issued: April 17, 2026 0934Z
blue ball Administrative: Update#2 - GOES East MDS Meso-1 Scheduled for April 16, 2026 - Issued: April 17, 2026 0925Z
blue ball Administrative: Update#4: Critical Weather Day Declared for April 11, 2026 - Issued: April 16, 2026 2347Z
blue ball Product Outage/Anomaly: Update#1 EUMETSAT : GDS-METOP-B - Issued: April 16, 2026 2128Z
blue ball Product Outage/Anomaly: Update #1: NOAA-21 Data Delay - Issued: April 16, 2026 2042Z
blue ball Product Outage/Anomaly: EUMETSAT : GDS-Metop-B - Issued: April 16, 2026 1950Z
blue ball Product Outage/Anomaly: NOAA-21 Data Delay - Issued: April 16, 2026 1949Z
blue ball Himawari-9 Weekly Special Satellite Operations Schedule, Issued: April 16, 2026 1740 UTC
blue ball Product Anomaly/Outage: GOES-18 - All Products products delivered to GRB -Issued: Apr 16, 2026 1709Z
blue ball Administrative: NOAA-20 VIIRS Lunar Calibration Roll Maneuver Scheduled for April 27, 2026 Issued: April 16, 2026 1527Z
blue ball Administrative: GOES East MDS Meso-2 Scheduled for April 16, 2026 - Issued: April 16, 2026 1404Z
blue ball Administrative: Update#1 GOES East MDS Meso-1 Scheduled for April 16, 2026 - Issued: April 16, 2026 1358Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 16, 2026 - Issued: April 16, 2026 1316Z
blue ball Product Outage/Anomaly: Sentinel-3B Service (Recovered) Issued April 15, 2026 1649Z
blue ball Product Outage/Anomaly: Jason-3 Service Issued April 15, 2026 1610Z
blue ball Administrative: GOES West MDS Meso-1 Scheduled for April 15, 2026 - Issued: April 15, 2026 1558Z
blue ball Administrative: Retirement of Version 8 Total Ozone Retrieval Algorithm on June 15, 2026 - Issued April 15, 2026 1410 UTC
blue ball Administrative: Update#3: Critical Weather Day Declared for April 11, 2026 - Issued: April 15, 2026 1215z
blue ball Administrative: (Update #1)OceanSAT-3 Spacecraft Maintenance for April 13th 2026 - Issued: April 15, 2026 1146Z
blue ball Administrative: (Correction) GOES West MDS Meso-1 Scheduled for April 14, 2026 - Issued: April 15, 2026 1132Z
blue ball Product Outage/Anomaly: Sentinel 3A Service Issued April 15, 2026 0814Z
blue ball Subject: Administrative: MetOp-B/1, & MetOp-C/3 AVHRR, Monthly Visible Calibration Update, 14 April 2026 - Issued: 14 April 2026 2033Z
blue ball Product Outage/Anomaly: Metop-B GDS FRAC Data Loss - Issued: April 14, 2026 1908Z
blue ball Product Anomaly/Outage: GOES-19 ASOS missing products Issued April 14, 2026 1853Z
blue ball Product Anomaly/Outage: GOES-19 - Sectorized Cloud and Moisture Bands 02, 05, 06, 07, 08, 09, 10, 11, 12, 14, 16 products delivered to AWIPS -Issued: Apr 14, 2026 1705Z
blue ball Administrative GOES-18 - ABI L1b Bands 02, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16 products delivered to GRB, PDA -Issued: Apr 14, 2026 1611Z
blue ball Administrative: GOES West MDS Meso-1 Scheduled for April 14, 2026 - Issued: April 14, 2026 1551Z
blue ball Administrative: Correction: GCOM-W1 IAM Maneuver Scheduled for April 15th, 2026 at 06:59:33Z - Issued: April 14, 2026 1540Z
blue ball GCOM-W1 IAM Maneuver Scheduled for April 15th, 2026 at 06:59:33Z - Issued: April 14, 2026 1535Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 14, 2026 - Issued: April 14, 2026 1352Z
blue ball SARSAT Outage/Anomaly: LUT Down Guam 3 and 4 LEO Ground Stations Offline, Issued: April 14, 2026 1232Z
blue ball Administrative: GOES East MDS Meso-2 Scheduled for April 14, 2026 - Issued: April 14, 2026 0908Z
blue ball Administrative: GOES East MDS Meso-1 Scheduled for April 14, 2026 - Issued: April 14, 2026 0854Z
blue ball Administrative: Update#1: Critical Weather Day Declared for April 11, 2026 - Issued: April 14, 2026 0825Z
blue ball Product Outage Anomaly: Jason-3 Data Delay Issued: April 13, 2026 2150Z
blue ball Administrative: Correction: NOAA-21 IAM-002 Maneuver scheduled for April 15th, 2026 - Issued April 13, 2026 2048Z
blue ball Administrative: Correction: OceanSAT-3 Spacecraft Maintenance - Issues April 13, 2026 1700Z
blue ball Administrative: OceanSAT-3 Spacecraft Maintenance for April 13th 2026 - Issued: April 13, 2026 1609Z
blue ball Administrative: OceanSAT-3 Spacecraft Maintenance - Issues April 13, 2026 1559Z
blue ball Product Outage/Anomaly: EUMETSAT: Alert Message 2026-04-13 13:51:26 :: Sentinel-3B Service - Issued April 13, 2026 1417Z
blue ball Administrative: GOES East MDS Meso-2 Scheduled for April 13, 2026 - Issued: April 13, 2026 0757Z
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