711
NOUS41 KWBC 151400
PNSWSH

Service Change Notice 26-81
National Weather Service Headquarters Silver Spring MD
1000 AM EDT Tue Sep 15 2026

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

From: Laurie G. Hogan, Chief
 Office of Future Readiness, Service Advancement
 Division

Subject: Experimental Graphical Hazardous Weather Outlook (GHWO)
Will Transition to Operational Status on or about October 30,
2026

The experimental GHWO will transition to operational status
beginning October 15, 2026 with completion on October 30, 2026.
This transition will include the addition of OCONUS Weather
Forecast Offices (WFOs).  The GHWO provides weather hazard
information through a web-based display on a public-facing web
page, generated by the local Weather Forecast Offices
(WFOs)/Weather Service Office (WSO).  Specific weather hazards
are placed in a matrix-style table with a daily clickable
colored forecast button.  Most weather hazard elements are
available up to 7 days into the future. Each colored forecast
button in the matrix displays the highest forecast risk
associated with that specific forecast element.

The forecast element matrix displays daily hazard forecasts for
each weather element.  The matrix shows the highest risk level
for each element that is located across the WFO s County Warning
Area (CWA) for the forecast day.

A complete listing of the unique web link for each WFO is
included in the Product Description Document (PDD).  The PDD
also outlines a number of other key elements and enhancements of
the product and is available online at:

https://nsdesk.servicenowservices.com/api/g_noa/nwspc/res2/00165
65acf9bcb10cf3cf6152f851c7d

Links to the WFO specific GHWO web pages are in the form:
https://www.weather.gov/ghwo?wfo=xxx
Where xxx is the three letter WFO name abbreviation.

If you have questions about this product, please contact:

Audra Bruschi
Office of Operations - Front Office/Integration and
Accountability
audra.bruschi@noaa.gov

Danielle Nagele
Office of Future Readiness, Service Advancement Division
danielle.nagele@noaa.gov


National Service Change Notices are online at:

https://www.weather.gov/notification/