NOUS41 KWBC 181935

PNSWSH

 

Service Change Notice 18-06

National Weather Service Headquarters Silver Spring MD

335 PM EST Thu Jan 18 2018

 

TO:      Subscribers:

         -NOAA Weather Wire Service

         -Emergency Managers Weather Information Network

         -NOAAPORT

         Other NWS Partners and NWS Employees

 

FROM:    Allison Allen

         Chief, Marine, Tropical, and Tsunami Services Branch

 

SUBJECT: Changes to the surface analyses and surface forecast 

         charts produced by the OPC, TAFB and WFO Honolulu

         and addition of 72-hour surface and wind/wave forecast

         charts by OPC effective March 7, 2018

 

The NWS National Centers for Environmental Prediction's (NCEP)

Ocean Prediction Center (OPC), the National Hurricane Center's

(NHC) Tropical Analysis and Forecast Branch (TAFB), and the

Weather Forecast Office (WFO) in Honolulu, Hawaii, will change

the content of their surface analyses and/or forecast charts

effective Wednesday March 7, 2018.

 

The OPC will change the content of its surface analyses, and

24-, 48-, and 96-hour forecast charts. The TAFB will change the

content of its surface analyses and 72-hour forecast charts. 

WFO Honolulu will change the content of its surface analyses.

 

Starting March 7, 2018, these charts will only depict future

forecast track information for extratropical low pressure

systems that have, or are forecast to have, hazards associated

with them. The hazards displayed will be gale, storm, hurricane-

force, developing gale, developing storm, developing hurricane-

force, and possible tropical cyclone. Heavy freezing spray

information and the ice edge will be included as well.

 

The analysis and forecast charts will no longer include past

track information. The analysis and forecasts charts also will

no longer include forecast tracks for the following: highs, 

extratropical lows with no hazards associated or expected with

them, and tropical cyclones.  This change will improve OPC, TAFB

and WFO Honolulu forecaster ability to provide detail in their

digital forecasts. For OPC, the change will also result in the

implementation of 72-hour forecast surface and wind/wave charts

issued once daily effective March 7, 2018. 

 

Additionally, the change will ensure consistency of information

regarding tropical cyclones found through text and graphics

supplied by the NHC, Central Pacific Hurricane Center (CPHC),

and Joint Typhoon Warning Center (JTWC).

 

An example of the change can be found at:

 

https://ocean.weather.gov/sfc_tracks.php

 

No immediate changes will occur to the schedule of radiofax

charts produced by the OPC, TAFB or WFO Honolulu or to the

radiofax schedule via the Worldwide Marine Radiofacsimile

Broadcast:

 

http://www.nws.noaa.gov/om/marine/rfax.pdf

 

The 72-hour forecast information will be found at the OPC web

page, https://ocean.weather.gov. Efforts will be made to

incorporate the 72-hour forecast information into the radiofax

schedule at a later date.

 

There will be no changes to the Unified Surface Analysis which

can also be found at https://ocean.weather.gov.

 

Surface analyses and forecast charts can be found on the OPC web

site at:

 

Atlantic:

https://ocean.weather.gov/Atl_tab.shtml

 

Pacific:

https://ocean.weather.gov/Pac_tab.shtml

 

Alaska/Arctic:

https://ocean.weather.gov/AK_tab.shtml

 

Surface analyses and forecast charts can be found on the TAFB

web site at:

http://www.nhc.noaa.gov/marine/

 

Hawaiian marine products can be found on the WFO Honolulu web site:

http://www.prh.noaa.gov/hnl/pages/marine.php

 

Tropical cyclone information for the North Atlantic and eastern

North Pacific can be found at the NHC web site at:

http://www.nhc.noaa.gov/

 and at

http://www.nhc.noaa.gov/aboutnhcprod.shtml

 

Tropical cyclone information for the central North Pacific can

be found at the CPHC web site at:

http://www.prh.noaa.gov/cphc/

 

Tropical cyclone information for the northwest Pacific can be

found at the JTWC website at:

https://metoc.ndbc.noaa.gov/JTWC/

 

Users do not need to make any changes to their systems to

continue receiving these products.

 

Please send comments or requests for more information to:

 

Darin Figurskey

OPC Operations Branch Chief

Darin.Figurskey@noaa.gov

301-683-1497

 

Eric Christensen

TAFB Operations Acting Branch Chief

Eric.Christensen@noaa.gov

305-229-4454

 

Christopher Brenchley

WFO Honolulu Meteorologist in Charge

Christopher.Brenchley@noaa.gov

808-973-5272

 

National Service Change Notices are online at:

 

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

 

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