NOUS41 KWBC 251815

PNSWSH

Service Change Notice 12-32

National Weather Service Headquarters Washington DC

215 PM EDT Tue Sep 25 2012

To: Subscribers:

-Family of Services

-NOAA Weather Wire Service

-Emergency Managers Weather Information Network

-NOAAPORT

Other NWS partners and NWS employees

From: Peter Stone

Chief, Oceanographic Division

NOS Center for Operational Oceanographic

Products and Services (CO-OPS)

Subject: NOS/CO-OPS to Change SHEF and CREX Bulletins

Effective October 24, 2012.

Effective October 24, 2012, at 1500 Coordinated Universal Time

(UTC), NOS/CO-OPS will implement the following changes:

- Update the source code for Astronomical Tide Standard

Hydrologic Exchange Format (SHEF) Bulletins from HMIFZ to HMIFA

- Change the time zone of the Great Lakes water level and

meteorological Character form for the Representation and EXchange

of Data(CREX) bulletin data

- Change CREX observed data bulletins for the Great Lakes

stations so that data are provided in UTC to adhere with World

Meteorological Organization (WMO) standards. Data had been

issued in Local Standard Time (LST) previous to this change.

Great Lakes observed data SHEF bulletins will remain in LST to

accommodate user needs.

Information about NOS/CO-OPS Products and Services is online at

http://www.tidesandcurrents.noaa.gov/index.shtml

For questions concerning these changes, please contact:

Kathleen Bailey

NOS/CO-OPS

Silver Spring, MD

Email: Kathleen.Bailey@noaa.gov

For general questions on CO-OPS products and services, contact:

Todd Ehret

NOS/CO-OPS/User Services Team

Silver Spring, MD

Email: tide.prediction@noaa.gov

National Service Change Notices are online at:

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

$$