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Overview and Product Examples
The Tropical Cyclone
Hazards Graphics are an experimental, internet-based product suite
consisting of four tropical cyclone hazards: wind, tornado, coastal
flooding, and inland flooding. A suite
of four graphics will be generated and posted by selected, coastal
Weather Forecast Offices (WFOs) for the 2007 Hurricane Season when
tropical cyclone watches and/or warnings are issued by the Tropical
Prediction Center/National Hurricane Center (NHC) for the WFO
area of responsibility.
These WFO-generated graphics are an assessment by forecasters
of the impacts a tropical cyclone could have in their area of responsibility,
based on official forecasts and associated forecast uncertainties
from the Tropical Prediction
Center, the Storm Prediction
Center, and the Hydrometeorological
Prediction Center. The graphics will generally be provided
by the WFO every six hours while tropical cyclone watches and warnings
are in effect for the WFO area of responsibility.
Participating WFOs will provide Impact Graphics for each of the
four tropical cyclone hazards. These graphics will provide an "at-a-glance" summary
for the cumulative impacts expected from the storm. These graphics are
not time-specific. Users must understand the impacts graphics
will provide an overall, areal impact for each storm hazard, and
there may be local differences in the magnitude of hazard impacts
within some areas. Users must also understand there is uncertainty
in the anticipated areal impacts, due to uncertainties in forecasting
the track, intensity and size of a tropical cyclone.
Examples of Products
Each graphic could have up to
six color indicators as follows: Gray | |
representing "None" impact(s), Dodger Blue | |
representing "Very Low" impact(s), Yellow | |
representing "Low" impact(s), Orange | |
representing "Moderate" impact(s), Red | |
representing "High" impact(s), and Fuchsia | |
representing "Extremely High" impact(s).
An example of graphics is provided for east central Florida.
Detailed definitions for the impact levels for each of the four
hazards are provided with the following sample graphics. Definitions
for impacts will be localized and customized as determined by the
WFOs. Please Note: Each NWS Forecast Office produces
graphics for the area it is responsible for. Therefore only counties
in that office's area of responsibility will be in color.
| Wind |
Tornadoes |
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| Inland Flooding |
Coastal Flooding |
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Call for Public Feedback
The National Weather Service asks for your comments on these experimental
graphics. Please provide feedback between between June 15 - November
30, 2007.
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