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NOUS41 KWBC 231822

Service Change Notice 17-03
National Weather Service Headquarters Silver Spring, MD
222 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

Subject:     Changes to the Hurricane Local
     Statement (HLS) issued by Weather Forecast Office
     (WFO) Honolulu effective on or around June 1, 2017

Reference:   Service Change Notice 17-04 issued January
     23, 2017: Weather Forecast Office (WFO)
     Honolulu will begin issuing the Hurricane Local
     Watch/Warning (TCV) product on an
     operational basis effective June 1, 2017

WFO Honolulu will begin issuing its HLS product in the same
format used for the HLS in the Atlantic hurricane basin on an
operational basis beginning in the 2017 Pacific hurricane

On June 1, 2015, the NWS implemented changes to the HLS for
Atlantic basin offices. The changes were in response to a
recommendation from the Hurricane Irene Service Assessment to
"improve the timing, readability and usefulness of the HLS
issued by NWS WFOs when an area is under tropical cyclone
threat."  Effective on or around June 1, 2017, WFO Honolulu will
change its HLS product to the format already adopted for the
Atlantic hurricane basin. There are no changes for the NWS
Western Region and the remainder of the NWS Pacific Region at
this time.

The following changes are planned for the HLS product issued
from WFO Honolulu:

1) The HLS product will no longer be the disseminating mechanism
for issuing tropical cyclone watches and warnings in its area of
responsibility.  Local tropical cyclone watches and warnings in
effect will be issued through the following WFO products:

a) Land zones: Hurricane Local Watch/Warning product (TCV).
Please see Service Change Notice 14-67: Updated. The HLS is
meant to be paired with the TCV product from WFO Honolulu to
provide a complete localized tropical forecast.

b) Marine zones: Tropical cyclone watches and warnings for WFO
Honolulu marine zones are issued via the Marine Weather Message
(MWWHFO) product.  Please see Service Change Notice 15-10.

2) The HLS product will no longer include Valid Time Event Codes
(VTEC).  Additional information on VTEC can be found online at:

3) The HLS product will become a non-segmented product.

4) The HLS product will contain a meteorological discussion and
will have sections containing generalized local impact and
preparedness information for land areas only.  Potential impact
information is ordered based upon the greatest expected impact.
Possible sections are wind, storm surge, flooding rain,
tornadoes, and other coastal hazards.  Only those sections with
a legitimate threat will be included.

There will be no change to the World Meteorological Organization
header or the AWIPS ID for the HLS product.

The Product Description Document can be found at:

An example of the HLS product for the 2017 hurricane season 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: is the U.S. government's official web portal to all federal, state and local government web resources and services.