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NOUS41 KWBC 111850

Service Change Notice 14-23
National Ocean Service Headquarters Washington DC
250 PM EDT Fri Apr 11 2014
Relayed by the National Weather Service

To:       Subscribers:
          -Family of Services
          -NOAA Weather Wire Service
          -Emergency Managers Weather Information Network
          Other NWS partners and NWS employees

From:     Peter Stone
          Chief, National Ocean Service (NOS)
          Center for Operational Oceanographic Products and
          Services (CO-OPS) Oceanographic Division

Subject:  NOS/CO-OPS to Enhance Storm QuickLook Product
          Effective May 15, 2014

Effective May 15, 2014, NOS/CO-OPS will implement several
enhancements to the Storm QuickLook product. The most
significant change is that water level observations and
tidal predictions will now be referenced to Mean Higher High
Water (MHHW) by default. Previously water level data were
referenced to Mean Lower Low Water (MLLW) by default.
Displaying data referenced to MHHW provides a better
indication of when flooding inundation may occur at coastal
locations. Users will still have the option of adjusting the
reference datum.

In addition, new clickable water level and meteorological
plots will provide easier access to additional data for a
given station on

These data will be displayed on the same datum, time zone
and units as set by the user on the QuickLook product. The
time and height of the next high tide, which is now
displayed below the water level plot, will update
automatically based on user-selected options. This
information was previously provided only on local time and
referenced to MLLW.

NOS has added an automatic-refresh option to the product,
which will update the page every 6 minutes, ensuring the
latest data is displayed without manually refreshing the

Finally a table has been added to the end of the product,
summarizing the latest observed water level, predicted tide
and water level residual as well as the maximum storm tide
observed over the previous 24 hours.

Information about the Storm QuickLook product can be
accessed using the below link:

For questions concerning these changes, please contact:
Paul Fanelli
Silver Spring, MD

For general questions on CO-OPS products and services,
please contact:
Todd Ehret
NOS/CO-OPS/User Services Team
Silver Spring, MD

National Service Change Notices are online at:

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