Public Information Statement
Issued by NWS National HQ

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NOUS41 KWBC 282130

Service Change Notice 23-97
National Weather Service Headquarters Silver Spring MD
530 PM EDT Thu Sep 28 2023

To:  Subscribers
  -NOAA Weather Wire Service
  -Emergency Managers Weather Information Network
  Other NWS Partners, Users and Employees

From:  Bruce Entwistle
  Chief, Aviation and Space Weather Services Branch

Subject:  Deployment of and Update to the Kp>7 Warning to Remove the
  Adjectival Description on or about September 28, 2023

On or about September 28, 2023, at 1700 Universal Coordinated Time
the National Weather Service will deploy an update to the Geomagnetic
index of 7 or greater warning.With this change, the adjectival
description associated with the NOAA Space Weather Scales information
this product will be removed.  Currently the product contains the
following line:

NOAA Scale: G3 or greater - Strong to Extreme

This line will be changed to only show the following:

NOAA Scale: G3 or greater

This change is being made to reduce potential confusion when only G3
conditions are expected.

For any comments/feedback on this change at SWPC please contact:

Robert Steenburgh
Space Weather Forecast Office Acting Lead
NOAA Space Weather Prediction Center
Boulder, CO


Dr. Jennifer L. Meehan
National Space Weather Program Manager
National Weather Service Headquarters
Silver Spring, MD

National Service Change Notices are online at: is the U.S. government's official web portal to all federal, state and local government web resources and services.