NOUS41 KWBC 071739 AAB

PNSWSH

 

Service Change Notice 14-66: Amended

National Weather Service Headquarters Washington DC

140 PM EDT Thu May 7 2015

 

To:          Subscribers:

             -Family of Services

             -NOAA Weather Wire Service

             -Emergency Managers Weather Information Network

             -NOAAPORT

             Other NWS Partners and NWS Employees

 

From:        Eli Jacks

             Acting Chief, Forecast Services Division

 

Subject:     Amended: Changes to the Hurricane Local Statement

             Effective May 7, 2015

 

Reference:   Service Change Notice 14-67: Experimental Hurricane

             Local Watch/Warning Product will Transition to

             Operational Effective May 7, 2015

 

Amended effective date from June 1 to May 7, 2015, due to a high

chance of a subtropical or tropical cyclone developing near the

southeast United States coast

 

Amended examples to change "Significant Potential Impacts"

section header to "Potential Impacts".

 

Corrected to note that for the eastern, central and western

Pacific Hurricane basins, there will be no change in the current

format of the HLS.

 

Effective May 7, 2015, the NWS will implement changes to the

Hurricane Local Statement (HLS). The changes are in response to

a recommendation from the Hurricane Irene Service Assessment to

"improve the timing, readability, and usefulness of the HLS

issued by NWS Weather Forecast Offices (WFOs) when an area is

under tropical cyclone threat."

 

The following changes to the HLS, using input from social

scientists, will take place in 2015 for WFOs issuing the HLS in

the Atlantic hurricane basin:

 

1) The HLS will not use Valid Time Event Codes (VTEC).

Additional information on VTEC can be found online at:

 

http://www.nws.noaa.gov/directives/sym/pd01017003curr.pdf

 

2) The HLS will become a non-segmented product. All land

forecast zones will be included in every issuance.

 

3) The HLS will contain a succinct 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.

 

4) The HLS will no longer be the disseminating mechanism for

issuing tropical cyclone watches and warnings in a WFOs 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.

Please see Service Change Notice 14-67. The HLS is meant

to be paired with the Hurricane Local Watch/Warning

Product to provide a complete localized tropical

forecast from each WFO. 

 

b) WFO marine zones: Marine Weather Message (MWW).  Please see

Service Change Notice 15-10.

  

A complete list of WFOs affected by the changes above can be

found at:

 

http://www.nws.noaa.gov/om/hurricane/resources/wfos.pdf

 

There will be no change to WMO headers or AWIPS IDs for the HLS.

 

Examples of the HLS for the Atlantic hurricane basin can be

found at:

 

http://www.nws.noaa.gov/os/hurricane/pns/HLS_case1.txt

http://www.nws.noaa.gov/os/hurricane/pns/HLS_case2.txt

http://www.nws.noaa.gov/os/hurricane/pns/HLS_case3a.txt

 

For the eastern, central and western Pacific Hurricane basins,

there will be no change in the current format of the HLS.

Tropical cyclone watches and warnings for WFO marine zones also

will be moved to the MWW. WFOs affected are:

 

San Diego, CA

Los Angeles/Oxnard, CA

Honolulu, HI

Guam   

 

For questions regarding this notice, please contact:

 

John Kuhn

NWS Marine and Coastal Weather Services Branch

Silver Spring, MD  20910

Telephone:  301-427-9364

Email: John.F.Kuhn@noaa.gov

 

 

National Service Change Notices are online at:

 

http://www.weather.gov/os/notif.htm

 

$$