264
NOUS41 KWBC 171345
PNSWSH

Service Change Notice 25-54
National Weather Service Headquarters Silver Spring MD
945 AM EDT Thu July 17 2025

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

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

Subject: Change in Product Issuance Times and Frequency for
Weather Prediction Center Medium Range Products and Climate
Prediction Center 8-14 Day Hazards Outlook: Effective August 20,
2025

Effective on August 20, 2025, the National Centers for
Environmental Prediction (NCEP) Weather Prediction Center (WPC)
and Climate Prediction Center (CPC) will adjust the issuance
times for the following products:

Product        Current (UTC)  New (UTC)
---------------------------    -------------  ----------
Day 3-7 Gridded Forecast       0400/1600  0530/1730

Winter Weather Outlook       0500/1700  0630/1830
 WMO Heading: RHUZ97 KWNH

Extended Forecast Discussion   0700/1900  0800/2000
 WMO Heading: FXUS02 KWBC
 AWIPS ID: PMDEPD

WPC Hazards Outlook       Monday-Friday  Daily by 2030
       by 2030

CPC Day 8-14 Hazards Outlook   Monday-Friday  Daily by 2000
 WMO Heading: FXUS21 KWNC     by 2000
 AWIPS ID: PMDTHR

A complete listing of the products affected can be found here:
https://www.weather.gov/media/notification/ref/WPC_Med_Range_Pro
duct_Deadline_Changes.pdf

All WPC Day 3 to 7 forecast products are available at the
following link: https://www.wpc.ncep.noaa.gov/medr/medr.shtml

The WPC Day 3 to 7 Hazards Outlook is available at the following
link: https://www.wpc.ncep.noaa.gov/threats/threats.php

The CPC Day 8 to 14 Hazards Outlook is available at the
following link:
https://www.cpc.ncep.noaa.gov/products/predictions/threats/threa
ts.php

If you have comments regarding these changes, please contact:

Alex Lamers
Chief, Forecast Operations Branch
National Weather Service  NCEP/Weather Prediction Center
College Park, MD
alex.lamers@noaa.gov

or

Jon Gottschalck
Chief, Operational Prediction Branch
National Weather Service  NCEP/Climate Prediction Center
College Park, MD
jon.gottschalck@noaa.gov

National Service Change Notices are available at:

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