Public Information Statement
Issued by NWS National HQ

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030
NOUS41 KWBC 281605 AAB
PNSWSH

Public Information Statement 19-03 Updated
National Weather Service Headquarters Silver Spring MD
1205 PM EDT Fri Jun 28 2024

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

From: Stephen W. Bieda III, Ph.D., Chief
 Severe, Fire, Public, and Winter Weather Services
 Branch

Subject: Updated: Soliciting Comments on the Experimental
Graphical Hazardous Weather Outlook (GHWO) through February 28,
2025

Updated to solicit comments on recent changes to the GHWO
product.

The experimental Graphical Hazardous Weather Outlook (GHWO) has
been updated with several changes to the user interface.  The
color scheme has been updated to show gray boxes instead of
green for risk levels of None and to incorporate the Storm
Prediction Center`s (SPC`s) Convective Outlook color scheme
within the Tornado, Thunderstorm Wind, and Hail elements.  In
addition, a new location search box has been added to make
navigating to the correct Weather Forecast Office`s (WFO`s)
experimental GHWO easier.  For areas of the country where
multiple groups of weather hazards exist, like along coastal
areas, there is a new Filter Element that only displays certain
weather variables, like Marine.

The experimental GWHO will be provided from 117 contiguous U.S.
(CONUS) NWS WFOs for extended public comment through February
28, 2025.

The experimental GHWO provides weather hazard risk forecast
information through a web-based display on a public-facing
webpage, generated by the WFOs.  Specific weather hazard risks
are placed in a matrix-style table with a daily clickable
colored forecast button.  Most weather risk 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 risk forecasts
for each weather element.  The matrix shows the highest risk
level for each weather forecast element that is located across
the County Warning Area (CWA) for the forecast day.  Certain
participating WFOs have customized forecast threats and elements
available on their GHWO webpage, depending on their unique
weather forecast service provision (e.g., marine/coastal
forecast responsibility).

A complete listing of the participating WFOs, including 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 of the product and is available online at:

https://nsdesk.servicenowservices.com/api/g_noa/nwspc/res2/a658a
00e47c74a90f6550c03e16d43b1

Comments may be submitted via the survey link below:

https://www.surveymonkey.com/r/ExpGHWO_2024

At the end of the comment period, if feedback is favorable, the
product will be evaluated for continuation or operational
implementation.

If you have questions about this product, please contact:

Aaron Treadway
Severe Weather Program Coordinator
aaron.treadway@noaa.gov

National Public Information Statements are online at:

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