National Oceanic and Atmospheric Administration, United States Department of Commerce

  • Attention CLASS users (12/14/2018):
    CLASS at Boulder will be off-line for maintenance from January 8 to 9, 2019. The following services will be affected:
    1.) Access to will not be available.
    2.) Access to subscriptions at will not be available.
    3.) Ad hoc orders already delivered to will be moved to The CLASS team will coordinate with those affected.

    All services will return to normal on January 10, 2019. If you have any questions or need assistance please submit an email to CLASS Help Desk.

  • Current status of GOES-16 and GOES-17 ABI products (12/11/2018):
    The GOES-17 ABI Level 1B Radiance data and Cloud and Moisture Imagery products are now available through CLASS. Please read the usage guidance submitted by the program office below.

    NOAA's GOES-17 satellite has not been declared operational and its data are preliminary and undergoing testing. Users receiving these data through any dissemination means (including, but not limited to, PDA and GRB) assume all risk related to their use of GOES-17 data and NOAA disclaims any and all warranties, whether express or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose.

    The remainder of the GOES-17 ABI Level 2+ products will remain restricted through at least March 2019.

    For GOES-16, the majority of the products are now at Provisional Maturity with Full Maturity (highest quality level) reached for the Level 1B Radiance data and Cloud and Moisture Imagery products. All ABI products, as well as, the L1B radiance data, are found under the GRABIPRD data family.

    For complete details on product maturity, maturity dates, and access start dates please see

  • CLASS Confirmation Email Has Changed (10/18/18):
    The format of the CLASS confirmation email for ad hoc orders and subscription orders was changed on 10/10/18. This change was implemented to prevent the possibility of CLASS sending an unreasonable number of emails to you. CLASS will now combine multiple order confirmation emails into one. This action has the potential of including both ad hoc and subscription orders in one notification. This will occur if more than ten orders are created within one minute. The subject line will contain a string of order and subscription numbers, while the body of the email will contain the information for each order. Unfortunately, some users running scripts dependent on information contained in the email may have been impacted by this change.

    If you have questions or a request to disable this feature please contact the CLASS Help Desk.

  • Attention JPSS Users. Start dates of NOAA-20 products now available to the public. (4/25/2018):

    • 12/08/2017 - ATMS SDR and TDR
    • 01/17/2018 - CrIS SDR
    • 02/01/2018 - VIIRS SDR
    • 02/01/2018 - VIIRS Imagery Bands

    Data sets are available back to Beta Maturity. Be sure to review the readmes for any data issues and caveats on the STAR JPSS/SNPP Algorithm Maturity Matrix website at

    For easy access to the most recent JPSS global daily tar files please go to

  • GOES-16 Geostationary Lightning Mapper (GLM) Data Now Available (02/07/2018):
    The GLM Level-2 products can now be ordered from CLASS under the Family name GOES-R Series GLM L2+ Data Product (GRGLMPROD). Please be sure to read the GLM data search page Notes section for details on product maturity levels, their timelines, and all documented issues found within the Readme files.

    If you have any questions or need assistance please submit an email to CLASS Help Desk.

  • Attention New CLASS Users – See tutorial on accessing data from CLASS (4/12/2018):

    Please click on the following link to get step by step instructions on how to use CLASS to search and order data:

    If you have any questions or need assistance please submit an email to CLASS Help Desk.