Total Water Level and Coastal Change Forecast Viewer - National Assessment of Storm-Induced Coastal
Change Hazards
Total Water Level and Coastal Change Forecast Viewer
This tool displays operational total water level forecasts and coastal change predictions for
select regions of the U.S. coastline using local beach characteristics.
For on demand programmatic access the data behind current and historical forecasts use our new
API
For official watch, warning, advisory, and forecast information please visit the
National Weather Service
at
www.weather.gov
The Total Water Level and Coastal Change (TWL&CC) Forecast Viewer and API should not be
solely relied upon to make important decisions
about
hazard
response. Inundated areas shown should not be used for navigation, regulatory,
permitting, or other legal purposes. The U.S. Geological Survey provides these maps,
data, and graphical representations "as-is" for a quick reference, emergency
planning
tool
but assumes no legal liability or responsibility resulting from the use of this
information.
The data provided by the TWL&CC Forecast Viewer and API is intended to improve coastal
change and
flooding
awareness and preparedness; however, it does not guarantee the safety of an
individual
or structure. The contributors and sponsors of this product do not assume liability
for
any injury, death, property damage, or other effects of coastal change and
flooding.
This model output is experimental and subject to revision. It is being provided to
meet the need for timely best science. The data are released on the condition that
neither the USGS nor the U.S. Government shall be held liable for any damages
resulting from its authorized or unauthorized use. There may be times where the
updates are not available.
Any use of trade, firm, or product names is for descriptive purposes only and does
not
imply endorsement by the U.S. Government.
Potential Inundation -
Site(s)
Potential Overwash -
Site(s)
Potential Dune Erosion -
Site(s)
No Predicted Events -
Site(s)
Tell us how you use this viewer!
Let's get started
On the map, click the colored circle representing your region of interest. When the map zooms into
the selected region, click any of the individual pins and the most recent total water level
forecast for that site will appear right here.
Find out more quick start info, help, tips, and tricks in our
How To and FAQs
page.
For official watch, warning, advisory, and forecast information
please visit the
National Weather Service
at
www.weather.gov
New Data Access Features
You can now download individual forecast and dune data directly from the Viewer interface using the new
"Download this Forecast" button found in each site's informational popup.
For on demand access to current and historical data at all covered sites use the the new REST compliant API. See the
API Documentation
for usage details.
Important Notes
The Total Water Level and Coastal Change (TWL&CC) Forecast Viewer and API should not be solely relied upon to make important decisions
about
hazard
response. Inundated areas shown should not be used for navigation, regulatory,
permitting, or other legal purposes. The U.S. Geological Survey provides these maps,
data, and graphical representations "as-is" for a quick reference, emergency planning
tool
but assumes no legal liability or responsibility resulting from the use of this
information.
The data provided by the TWL&CC Forecast Viewer and API is intended to improve coastal change and
flooding
awareness and preparedness; however, it does not guarantee the safety of an
individual
or structure. The contributors and sponsors of this product do not assume liability
for
any injury, death, property damage, or other effects of coastal change and
flooding.
This model output is experimental and subject to revision. It is being provided to
meet the need for timely best science. The data are released on the condition that
neither the USGS nor the U.S. Government shall be held liable for any damages
resulting from its authorized or unauthorized use. There may be times where the
updates are not available.
Any use of trade, firm, or product names is for descriptive purposes only and does
not
imply endorsement by the U.S. Government.
For official forecast information visit the
National Weather Service
Time of Peak TWL [UTC]
Tide + Surge @ Peak TWL [m]
Wave runup @ Peak TWL [m]
Peak TWL [m]
Dune Toe Elev. [m]
Dune Crest Elev. [m]
Legend
total water level
sum of tide, wind surge, and wave runup values
95% confidence
based on spatial/temporal uncertainty in beach slope
mean water level
sum of tide, wind surge, and wave setup values
dune/berm crest elevation
dune/berm toe elevation
Dune elevations may not be representative of current beach conditions
Time Series and Beach Profile Legend
total water level
sum of tide, wind surge, and wave runup values
95% confidence
based on spatial/temporal uncertainty in beach slope
mean water level
sum of tide, wind surge, and wave setup values
dune/berm crest elevation
dune/berm toe elevation
dune impact regime
beach profile is colored to represent:
tan
- dune/berm impacts unlikely
yellow
- potential dune erosion
orange
- potential overwash
red
- potential inundation
Dune elevations may not be representative of current beach conditions