[nws-changes] 20110203: Fwd: scn11-07 Hurricane Local Statement Updates

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-------- Original Message --------
NOUS41 KWBC DDHHHH

PNSWSH



Service Change Notice 11-07

National Weather Service Headquarters Washington DC

1025 AM EST Thu Feb 3 2011



TO:          Subscribers:

             -Family of Services

             -NOAA Weather Wire Service

             -Emergency Manager Weather Information Network

             -NOAAPORT

             Other NWS partners and NWS employees



FROM:        Therese Z. Pierce

             Chief, Marine and Coastal Services Branch



SUBJECT:     Changes to the Hurricane Local Statement

             Format Issued by Weather Forecast Offices for

             Tropical Cyclones in the Atlantic and Eastern

             Pacific Hurricane Basins: Effective May 15, 2011



REFERENCE:   SCN 11-08 issued February 3, 2011: Changes to

             Watches and Warnings issued by Weather Forecast

             Offices for tropical cyclones in the Atlantic

             and Eastern Pacific hurricane basins:

             Effective May 15, 2011



The overall format of the HLS initially adopted in 2009, with an

Overview block followed by Tropical Cyclone Watch/Warning Valid

Time Event Code (VTEC) segments, remains the same for 2011;

however, in response to feedback received in 2010 to increase

product consistency and decrease length, the following changes

will be made to the Hurricane Local Statement (HLS) products

issued by NWS Weather Forecast Offices (WFOs):



1.  The Overview block of the HLS becomes mandatory.



2.  Following the HLS product headline(s), the Overview block

will begin with a mandatory NEW INFORMATION section header.  All

other section headers in the Overview block become mandatory and

will be placed in the same order within the product.  Optional

sections will not be included in the Overview block.



3.  The possible watches and warnings in the VTEC segments (and

associated VTEC event names and phenomena codes) of the HLS

will change effective May 15, 2011.  For additional information,

please see SCN 11-08.



4.  Associated VTEC Event Tracking Numbers (ETNs) will be

unified for all tropical cyclone watches and warnings for inland

(public), coastal (public) and marine zones for a given event.

In short, if the National Hurricane Center (NHC) issues a

Tropical Cyclone Valid Time Event Code (TCV) product, the ETN in

the product will be the same in all tropical cyclone watches and

warnings issued by the WFO in the HLS products.



5.  If the NHC issues a Tropical Cyclone Public Advisory (TCP)

product, not a TCV, and the WFO issues tropical cyclone watches

and warnings for marine zones only, the ETN is assigned from the

cyclone number in the coded string at the end of the Issuing

Office Line in the National Center’s TCP. An example of the

Issuing Office Line with a coded string follows:



NWS NATIONAL HURRICANE CENTER MIAMI FL    AL072011



In this example, the cyclone number is 07.



6.  The NEW INFORMATION section header in the VTEC segments

changes from mandatory to optional.  Other section headers

remain optional.



There are no changes to HLS product issuance criteria, WMO

headers, or AWIPS identifiers.



Examples of the new HLS format for the Atlantic and Eastern

Pacific hurricane basins, to include a typical HLS example and

also an abbreviated HLS issuance (used by WFOs for the issuance

of new tropical cyclone watches and/or warnings for one or more

public or marine zones) are online at:



http://www.weather.gov/os/notification/images/hls2011.doc



The changes detailed in this Service Change Notice are not

applicable to WFOs Honolulu, Hawaii; Tiyan, Guam; and Pago Pago,

American Samoa. The HLS format for 2011 for each of these WFOs

remains unchanged from the format used in 2010.



If you have questions regarding this notice, please contact:



     Timothy Schott

     National Weather Service

     Marine and Coastal Weather Services Branch

     1325 East West Highway , Room 13126

     Silver Spring , Maryland   20910

     301-713-1677 x122

     Timothy.Schott@xxxxxxxx



National Service Change Notices are online at:



     http://www.nws.noaa.gov/om/notif/htm



$$

NNNN


Office of Services Notification Coordinator



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