Global tropical storm tracks displayed on CERA

Did you know that about 85 tropical storms form annually over the warm tropical oceans of the globe? And while the majority of tropical cyclones happen in the northern hemisphere with most activity occurring between mid-August and mid-October, tropical cyclones in the southern hemisphere are most frequent during the December through April warm season.

The Coastal Emergency Risks Assessment (CERA) web storm surge guidance system provides water levels and wind information from NOAA’s Global Extratropical Surge and Tide Operational Forecast System (G-ESTOFS) for storm surge and wind guidance around the year. One of our latest features is the overlay of global hurricane and typhoon track information coming from the National Hurricane Center (NHC) and the Joint Typhoon Warning Center (JTWC).

CERA displaying tropical cyclone track activity in the southern hemisphere in Feb 2022

CERA is part of a collaborative project with NOAA

In January 2022, the NOAA Coast Survey Development Lab (CSDL) was awarded funding to improve storm surge modeling to further enhance NOAA’s disaster preparedness and response. The Louisiana State University (LSU) Coastal Emergency Risks Assessment (CERA) web mapping application is an integral part of this collaborative project to deliver storm surge and inland flooding model results to the public and the modeling community.

The award was published in the February edition of NOAA’s Coast Survey Newsletter:

https://nauticalcharts.noaa.gov/ocs-monthly/

CERA website shows global water level stations

We are delighted to introduce our latest CERA enhancement that provides 558 global water level points from the NOAA Extratropical Surge and Tide Operational Forecast System (ESTOFS) system on a daily basis.

About ESTOFS:
The NOAA/NOS/Coast Survey Development Lab and the NOAA National Centers for Environmental Prediction (NCEP) produce storm surge guidance for extratropical systems through their Extratropical Surge and Tide Operational Forecast System (ESTOFS) four times daily out to 7.5 days. The ESTOFS model uses the storm surge model ADCIRC forced by real time output of atmospheric pressure, winds, and sea ice from the NCEP Global Forecast System (GFS) and is run on NOAA’s WCOSS super computing system to produce numerical outputs. The global unstructured grid consists of 8 million nodes with a coastal grid resolution of up to 80 m for Hawaii and the US West Coast, and up to 120 m for the US East Coast, Puerto Rico, Micronesia, and Alaska.

The Coastal Emergency Risks Assessment (CERA) visualization tool provides ESTOFS results on its interactive visualization website (https://cera.coastalrisk.live) once daily, including global water level heights and wind speed results. The newly added ESTOFS water level stations combine predicted forecast water levels from the model with observed water levels from the NOAA Tide & Currents service and the Intergovernmental Oceanographic Commission (IOC) Sea Level Station Monitoring Facility.

In addition to this new feature, we made major updates to all water level stations along the US coast, including services from NOAA, USGS, and the USACE.

Global ESTOFS on CERA
CERA-PRO provides global water level stations from the NOAA Extratropical Storm Surge and Tide Operational Forecast System (ESTOFS) once daily

CERA Storm Report for Hurricane Ida

Ida (August 26 – 31, 2021) made landfall as a strong category 4 hurricane near Port Fourchon, LA on August 29.  The impacts of Ida are far-reaching across Southeastern Louisiana and beyond.  Over a million customers in the region were without power, and for some, restoration is estimated to take weeks or longer.  The greater New Orleans area was left completely in the dark, leaving officials scrambling to determine the best path to bring the city and surrounding areas back up.  The devastation caused in the coastal areas like Grand Isle, where 100% of structures are reported to have sustained damage, will take years to rebuild.  Intense flooding in the River Parishes left homes and businesses destroyed.

The CERA Group at the LSU Center for Computation and Technology successfully performed storm surge and flood guidance to end users in Louisiana. Several model results were available on the CERA website at https://cera.coastalrisk.live.

Success Highlights

  • CERA delivered visualizations for storm surge model runs from the ADCIRC Surge Guidance System (ASGS) for the NHC official forecast, veer left and veer right scenarios and an increase in overland speed from advisory #6 through #18.
  • CERA maps from the Compound Flood Inundation Guidance System (CFIGS) were delivered for special advisories. This was the first time that CFIGS went operational for a storm event to provide results in real-time.
  • CERA got more than 20,000 page views from the public website and 9,000 page views from users with a login during the storm. 350 subscribed users were active on the site during the storm.
  • CERA/ASGS/CFIGS results were used by the Coastal Protection and Restoration Authority (CPRA) to brief the Louisiana Governor.
  • CERA received numerous new login requests from high-ranking agencies and organizations, including the Louisiana Governor’s Office of Homeland Security and Emergency Preparedness (GOHSEP).
  • CERA provided GeoTiff imagery for the inundation impacts that were used by the DHS HAZUS Group for damage assessment, among others.
CERA: ADCIRC Surge Guidance System – predicted water levels for Ida, advisory 14 on Aug 29
CERA – CFIGS showing the Flood Risk Hazard in Structures layer for IDA, advisory 14 on Aug 29

CERA provides NOAA’s upgraded Global Ensemble Forecast System

On July 27, 2021, the National Centers for Environmental Prediction (NCEP) Central Operations upgraded the Global Extratropical Surge & Tide Operational Forecast System (Global ESTOFS) to version 2. This upgrade contains major improvements in model performance, resolution, and coverage to provide high resolution water level forecast guidance including storm tide for the entire globe.

The CERA visualization system makes this upgrade available through it’s online portal at cera.coastalrisk.live.

NOAA Global ESTOFS on Aug 2, 2021

See NOAA’s full upgrade announcement

FEMA Hazus uses CERA as validation tool

FEMA’s Hazus Program provides standardized tools and data for estimating risk from earthquakes, floods, tsunamis, and hurricanes. 

We have recently learned that the FEMA Hazus Development Group uses our CERA storm surge guidance visualization system to validate the development of a data tool for integrating hazard data into the FEMA Hazus application.

Thank you FEMA for the trust in the quality of the provided data through the CERA site at https://cera.coastalrisk.live

Tropical Storm Elsa has formed in the Atlantic

The fifth named storm of the 2021 Atlantic hurricane season formed over the Atlantic early Thursday (July 1).

According to the National Hurricane Center, Tropical Storm Elsa tracks westward at a quick pace of 25 mph.

Together with our partners at Seahorse Coastal Consulting , LSU High Performance Center, and the Texas Advanced Computing Center , the CERA Group has started storm surge guidance using the storm surge model ADCIRC.

You can follow real-time updates on the CERA website at https://cera.coastalrisk.live

CERA Storm Report for Tropical Storm CLAUDETTE

Tropical Storm Claudette (17 June –  21 June , 2021) was already the third named storm of the 2021 Atlantic hurricane season but the first tropical system that targeted both the Gulf and the Atlantic coasts.

The CERA Group at the LSU Center for Computation and Technology successfully performed storm surge and flood guidance to end users in Louisiana and North Carolina. Several model results were available on the CERA website at https://cera.coastalrisk.live.

Summary:

  1.  We used high resolution storm surge model meshes for the States of Louisiana and North Carolina and a vortex wind model to represent the NHC consensus track wind fields and the associated predicted storm surge  through the ADCIRC Surge Guidance System.
  2. The Compound Flood Inundation Guidance System delivered flood guidance showing compound threat predictions from surge and rainfall for watersheds in Louisiana once daily from June 16 through June 19 and an after-storm guidance on June 21.
  3. Customized gage stations were provided to the Louisiana Coastal Protection and Restoration Authority (CPRA) for their use to monitor water levels at critical locations.
TS Claudette approaching Louisiana, NHC advisory 5


TS Claudette impacting North Carolina, NHC advisory 15

Compound storm surge and rainfall impacts, NHC advisory 4

Gage stations for the Coastal Protection and Restoration Authority (CPRA)

Potential Tropical Cyclone THREE is rainfall threat

Potential Tropical Cyclone Three has formed in the Northern Gulf and might strengthen into a tropical system before making landfall along the southern Louisiana coastline. After two short-lived tropical systems in the Atlantic, this would already be the third named storm of the season 2021 – Claudette.

In partnership with Seahorse Coastal Consulting, the CERA Group at LSU provides storm surge and flood guidance for the Louisiana Coastal Protection and Restoration Authority of Louisiana (CPRA) and our partners in Louisiana.

Please visit our website at https://cera.coastalrisk.live for real-time guidance.

CERA Featured in LSU News

The LSU Office of Research and Development (ORED) recently published an online article about the partnership between LSU and CERA, which can be found here:

Read the article

The article details CERA’s functionality through the historic and record-breaking 2020 Hurricane Season, as well as some new capabilities in 2021.

This publication will also be promoted through LSU’s Working for Louisiana newsletter this July.