What is storm surge model?
What is storm surge model?
Storm surge models are a useful scientific tool for predicting real-time storm surge and future planning. These models provide real-time forecasting of the water level and potential inundation under storm conditions. hurricane information (position or storm track, wind strength) and atmospheric pressure; and.
What is the relationship between wind and storm surges?
A storm surge is primarily caused by the relationship between the winds and the ocean’s surface. The water level rises where the winds are strongest. In addition, water is pushed in the direction the winds are blowing.
What is the model used to forecast storm surge?
The Sea, Lake and Overland Surges from Hurricanes (SLOSH) model is a computerized numerical model developed by the National Weather Service (NWS) to estimate storm surge heights resulting from historical, hypothetical, or predicted hurricanes by taking into account the atmospheric pressure, size, forward speed, and …
What is a Category 5 storm surge?
• Category 5—Winds exceeding 157. mph, storm surge over 18 feet, cata- strophic damage destroying most.
What should you do during a storm surge?
During a storm surge
- Stay inside where you are protected from the water.
- Monitor the storm’s progress and listen for warnings or instructions from local officials.
- Before driving anywhere, listen carefully to rescue officials who will be coordinating evacuation plans.
- Do not drive through flood waters.
What is the social impact of storm surge?
Impact of Storm Surge A storm surge can lead to extreme flooding in coastal areas, causing property damage, loss of human life, coastal erosion, change in ecosystem etc. The two most vulnerable areas during storm surge are the estuaries and coastal areas.
How do you mitigate a storm surge?
Evacuate to a more elevated place. Keep at least 500m distance from a flat coast if the storm will pass directly your area which will cause storm surge in your community. Before evacuating, search the house and fix its weak parts. Tightly close the windows and turn off the electrical main switch.
What are the different types of storm surge models?
Some well-developed storm surge models used in the U.S. include the SLOSH model (the Sea, Lake, and Overland Surges from Hurricanes); the ADvanced CIRCulation (ADCIRC) coastal circulation and storm surge model; and (CH3D)-SMSS, the Storm Surge Modeling System with Curvilinear-grid Hydrodynamics in 3D.
How are slosh and ADCIRC storm surge models different?
Differences between the SLOSH and ADCIRC models are mainly in the following three areas: mesh shape and resolution, mathematical methods to solve equations in the model (numerics), and the physics contained in the model. A comparison between the SLOSH and ADCIRC storm surge models is given in the table below.
How is the SLOSH model of a hurricane accurate?
The SLOSH model is generally accurate within plus or minus 20 percent given a perfect track, intensity, and size of the hurricane. For example, if the model calculates a peak 3 m (~10 ft) storm surge for the event, one can expect the observed peak to range from about 2.4-3.6 m (~8 -12 ft).
Do you need a three dimensional hurricane model?
However, for some applications such as pollutant transport, a three-dimensional model is necessary for accurate results.