NOUS41 KWBC 101838

PNSWSH

 

Technical Implementation Notice 14-17

National Weather Service Headquarters Washington DC

238 PM EDT Thu Apr 10 2014

 

To:      Subscribers:

         -Family of Services

         -NOAA Weather Wire Service

         -Emergency Managers Weather Information Network

         -NOAAPORT

         Other NWS Partners and NWS Employees

 

From:    Mark Tew

         Chief, Marine and Coastal Weather Services Branch 

 

Subject: Multi-grid Hurricane Wave Model Added to SBN and

         NOAAPORT: Effective June 24, 2014

 

Effective June 24, 2014, with the 1200 Coordinated Universal

Time (UTC) run, the Multi-grid Hurricane Wave model produced by

the National Centers for Environmental Prediction will be added

to the SBN and NOAAPORT.

 

The Multi-grid Hurricane Wave model is run as a mosaic of

10 grids:

 

 1) 0.5 degree global domain grid

 2) 0.25 degree regional domain for North Atlantic

 3) 0.25 degree regional domain for North Pacific

 4) 10 arc min grid for the North Atlantic regional waters

 5) 10 arc min grid for the North Pacific regional waters

 6) 10 arc min grid for the Pacific Islands and Hawaii

 7) 10x15 arc min grid for the Alaskan waters

 8) 4 arc min grid for the US East Coast

 9) 4 arc min grid for the US West Coast (including the

    coastal waters of Hawaii)

 10) 8x4 arc min grid for the Alaskan coast

 

The grids have internal two-way coupling, and exchange

information during the computational cycle.

 

Wind forcing for the global, Alaskan and Pacific Island grids

will be from the Global Forecast System (GFS) winds. All the

other grids are using a blend of the GFS and GFDL hurricane

model winds.  The only exception is the Hawaiian Islands, part

of the Pacific Island grid, which also will have a blend of GFS

and hurricane model wind forcings.

 

The forecast interval will be provided over the SBN and NOAAPORT

as follows: 0 to 72 hours: 3 hours; 72 to 126 hours: 6 hours.

 

GRIB2 files will be available 5 hours after the synoptic time:

00, 06, 12, 18 UTC. The per cycle data volume will be

approximately 900 MB.

 

The WMO Heading for these products will be as follows:

 

T1:     DATA FORMAT OF GRIB2 /E/

T2:     PARAMETER CODE /ONE OF ABCJKLMNOPQRWY/

A1:     GRID CODE /ONE OF ABCDEFGHMQ /

A2:     FORECAST TIME /ONE OF ABCDEFGHIJKLMNOPQRSTUVWXYZ/

II:     LAYER OR LEVEL /88/

CCCC:   KWBU

 

Information on WMO Headers and NECP GRIB messages is online at:

 

  http://www.nco.ncep.noaa.gov/pmb/docs/on388/appendixa.html

 

For a complete listing of WMO Headings please refer to:

 

  http://www.nws.noaa.gov/os/notification/mc/hurr_wave.pdf

 

For questions concerning the Multi-grid Hurricane Wave model

contact:

 

  Hendrik Tolman

  NCEP/EMC Chief Marine Modeling and Analysis Branch

  5830 University Research Ct

  College Park, MD 

  Phone: (301) 683-3748 

  Email: Hendrik.Tolman@noaa.gov

 

For questions regarding SBN and NOAAPORT activation contact:

 

  John Kuhn

  Marine and Coastal Services Branch

  Silver Spring, MD

  Phone: (301) 713-1677 x121 

  Email: John.F.Kuhn@noaa.gov

 

National Public Information Statements are online at:

 

  http://www.weather.gov/os/notif.htm

 

$$