Concepts The National Weather Service issues flood forecasts that - - PowerPoint PPT Presentation

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Dec 10, 2022 261 likes •579 views

Concepts The National Weather Service issues flood forecasts that are hydrographs and narrative. Potential users of the NWS forecasts need tools to visualize what these forecasts mean to them. Further, the NWS, USGS and FEMA all

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Concepts

The National Weather Service issues flood

forecasts that are hydrographs and narrative.

Potential users of the NWS forecasts need

tools to visualize what these forecasts mean to them.

Further, the NWS, USGS and FEMA all

have site specific data that mean more when integrated.

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Combines the sources of data
Displays the information derived from the

data

Enables users to make intelligent and

informed flood event decisions

Heightens the personal awareness of flood

impacts, fostering better planning and decisions

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Inputs

Sources include NWS data of past, current

and forecast stage

USGS gage reference information
FEMA stream profiles
FEMA flood frequencies and Special Flood

Hazard Areas

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Outputs

Graphics showing where flooding has and

will be

Simulation of historic floods
Display of the Special Flood Hazard Area

and 500 Year Flood

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Initial concepts developed in discussions with

the National Weather Service, Charleston

Development by Engineering Perfection
Programming by Scott Jacovidis, Computer

Science Student at West Virginia Tech

GIS and Engineering by John Rains,

Engineering Graduate of Auburn University

GIS by Ben Stratton and Robert Maynard,

Geography Students at Marshall University

Grass Roots Project

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Display information for all stream gages in

West Virginia with NWS forecasts

Statistically evaluate the data inputs and

identify the parameters with the least accuracy

Plan for improvement of the least accurate

parameter(s)

Near Term Plan

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Comment today on the function of the site
Work with us to validate information
Increase awareness of Flood Alert
Tell us what you want! What you can best

use!!

What you can do…

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NWS Flood Alert Terms & Colors

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Charleston Wheeling Philippi Belington NWS Color Key

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Change in Stage for Recent Past and

Near Future

Change in Inundation for Varying Stages
Comparison of NWS Flood Warnings and

FEMA Flood Insurance Risk Estimates

Find These Functions

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Other Features

Has social features built into the site.

Microblogging to send tweets.
Ability to form community action groups.
Photo upload capabilities.
Communication between members via

private messaging.

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FEMA USGS NWS

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Results – Comparison

f Different Agency

Flood Data

Several instances of wrong locations and

datums on agency web sites

Inconsistency between FEMA flood risks

and NWS flood descriptions

Good match between the SFHA and the