679
NOUS41 KWBC 131730
PNSWSH

Service Change Notice 25-28
National Weather Service Headquarters Silver Spring MD
130 PM EDT Mar 13 2025

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

From: Greg Schoor, Chief
 Marine, Tropical, and Tsunami Services Branch

Subject: Changes to the Surf Zone Forecast (SRF) product for WFO
Guam on April 2, 2025

Effective on Wednesday, April 2, 2025, the NWS Weather Forecast
Office in Tiyan, Guam will begin issuing a reformatted Surf Zone
Forecast (SRF) text product for Guam and the Commonwealth of the
Northern Mariana Islands (CNMI).

Changes in the formatting of the SRF will include:

1) Combining the SYNOPSIS and OUTLOOK into a single DISCUSSION
section at the top of the SRF.

2) Removing the day/night hour ranges in the 12-hr surf detail
segments:

Former:  .TODAY (6 AM TO 6 PM)...
Revised: .TODAY...

3) Relabeling Maximum afternoon heat index to Heat Index
for
the first daytime surf detail segment.

4) Relabeling Coastal Winds to Winds in the surf detail
segments.

Table 1: NWS product affected by WFO Guam is listed below.

WFO   WMO Header   AWIPS ID
----------   ----------   --------
Tiyan, Guam   FZPQ50 PGUM   SRFGUM

The SRF product for WFO Guam can be found at the following link:

https://forecast.weather.gov/product.php?issuedby=GUM&product=SR
F&site=nws&format=txt

If you have questions or comments, please contact:

Elizabeth Vickery
Regional Operational Services Meteorologist
NWS Pacific Region Headquarters
Honolulu, HI
elizabeth.vickery@noaa.gov

Or

William Aydlett
Science and Operations Officer
NWS Weather Forecast Office Guam
Tiyan, GU
william.aydlett@noaa.gov

Or

Melinda Bailey
National Marine Program Manager
melinda.bailey@noaa.gov

National Service Change Notices are online at:

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