NOUS41 KWBC 121828 



Service Change Notice 17-04

National Weather Service Headquarters Silver Spring, MD

228 PM EST Mon Jan 23 2017


To:          Subscribers:

             -NOAA Weather Wire Service

             -Emergency Managers Weather Information Network


             Other NWS Partners and NWS Employees


From:        Allison Allen

             Chief, Marine, Tropical and Tsunami Services Branch


Subject:     Weather Forecast Office (WFO) Honolulu 

             will begin issuing the Hurricane Local    

             Watch/Warning (TCV) product on an   

   operational basis effective June 1, 2017


Reference:   Service Change Notice 17-03 issued January

             23, 2017: Changes to the Hurricane Local              

             Statement (HLS) issued by Weather Forecast Office

             (WFO)Honolulu effective on or around June 1, 2017


Effective on or around June 1, 2017, WFO Honolulu will begin

issuing, on an operational basis, the same TCV product

implemented at WFOs in the Atlantic hurricane basin during the

2015 season.


The TCV product is a segmented, automated product with each

segment being a discrete forecast zone.  Each segment contains

land-based tropical cyclone watches/warnings in effect,

meteorological information, threats (rain, storm surge, wind,

tornadoes) and their potential impacts, and local preparedness



This product is intended for parsing by the weather enterprise,

and is paired with the WFO Hurricane Local Statement (HLS) (see

Service Change Notice 17-03 for changes to the Hurricane Local

Statement 2017) to provide a complete, localized tropical



The TCV product from WFO Honolulu will contain a Universal

Geographic Code (UGC) and the following Valid Time Event Codes



TR.A - Tropical Storm Watch

TR.W - Tropical Storm Warning

HU.A - Hurricane Watch

HU.W - Hurricane Warning


Additional information on UGC and VTEC can be found in NWS

Instructions (NWSI) 10-1701 and NWSI 10-1703, respectively at:


The TCV product replaces the HLS product as the dissemination

mechanism for land-based WFO tropical cyclone watches and

warnings for WFO Honolulu.  Tropical cyclone watches and

warnings for WFO Honolulu marine zones are issued via the Marine

Weather Message (MWW) product.  Please see Service Change Notice



The National Tropical Cyclone Watch/Warning product (TCVCP(1-5))

issued by the Central Pacific Hurricane Center is not affected

by the addition of the TCV Product at WFO Honolulu and will

continue unchanged. Eventually, coastal WFOs (issuing tropical

products) in the Western Region and the remainder of the Pacific

Region will issue the TCV in this same format. This Service

Change Notice will be updated when those changes occur. 


An example of the TCV product can be found at:


The PDD can be found at:


For questions regarding this notice, please contact:


Jessica Schauer

NWS Tropical Service Program Lead

NWS Marine, Tropical and Tsunami Services Branch

National Hurricane Center

Miami, FL 33165

Telephone: 305-229-4476



Wayne Presnell

NWS Marine, Tropical and Tsunami Services Branch

Silver Spring, MD  20910

Telephone:  301-427-9390



National Service Change Notices are online at: