NOUS41 KWBC 051125



Service Change Notice 14-41

National Weather Service Headquarters Washington DC

720 AM EDT Tue Aug 5 2014


To:       Subscribers:

          -Family of Services

          -NOAA Weather Wire Service

          -Emergency Managers Weather Information Network


          Other NWS Partners, Users and Employees


From:     Mark A. Tew

          Chief, Marine and Coastal Weather Services Branch


Subject:  Changes in Eastern Region Outer Coastal Marine Zone

          Boundaries, Names, and Universal Geographic Codes

          (UGCs) effective December 2, 2014


Effective Tuesday December 2, 2014, at 200 pm Eastern Standard

Time (EST), or 1900 Coordinated Universal Time (UTC), eight

Eastern Region (ER) Weather Forecast Offices (WFOs) serving the

Atlantic coastal waters will each subdivide their one outer

marine zone (generally 20 nm to 40 nm from the coastline) into

several smaller outer marine zones. Subdividing the outer marine

zones will create additional boundaries, marine zone names, and

Universal Geographic Codes (UGCs). 


The reconfiguration of ER outer marine zones to smaller zones

will allow WFOs to provide more area specific Special Marine

Warnings and follow up statements. The reconfiguration also

facilitates the effort to eventually expand Storm Prediction

Center (SPC) watches (Tornado and Severe Thunderstorm) to all

outer marine zones surrounding the CONUS. At present SPC watches

extend only to the inner coastal marine zones, generally 0 to 20

nm from the coastline.     


Table 1 lists WFOs subdividing their outer marine zones. Table 2

lists the products affected by the outer marine zone



Table 1. Eastern Region WFOs subdividing their outer marine zones


Caribou ME (CAR)

Gray/Portland ME (GYX)

New York NY (OKX)

Philadelphia/Mt. Holly PA/NJ (PHI)

Wakefield, VA (AKQ)

Newport/Morehead City, NC (MHX)

Wilmington, NC (ILM)

Charleston, SC (CHS)


WFO Boston's outer marine zones are already subdivided and WFO

Baltimore/Washington marine area of responsibility does not

include marine zones along the Atlantic coastline.  Therefore

these two ER coastal WFOs are not included in this project.


Table 2: Issuing WFO products affected by the outer marine zone



Product Name                           


Special Marine Warning                  

Marine Weather Statement

Watch County Notification

Hazardous Weather Outlook


For a complete list of product identifiers by issuing WFOs in

Table 1 and product names in Table 2, see:


Users are encouraged to read details of the marine zone

subdivisions, listed by each WFO, at:


Users must make changes to their communications systems by

December 2, 2014 to receive the new marine zone names and UGCs in

the products listed in Table 2. 


A graphical image of the current ER coastal marine zones is

available on-line at:


A graphical image of the ER coastal marine zones, with the

subdivided outer marine zones effective December 2, 2014, is

available at:


An updated zone map shape file containing the new boundaries for

the marine zones effective December 2, 2014 is available for

download at:


If you have any questions, please contact:


Richard May                   Harvey Thurm

Marine Meteorologist          Marine Program Manager

National Weather Service      National Weather Service

Headquarters                  Eastern Region Headquarters   

1325 East West Highway        630 Johnson Ave.

Silver Spring, MD 20910       Bohemia, NY 11716  

301-713-1677 x 127            631-244-0124



This and all other NWS Service Change Notices are posted at