The National Oceanic and Atmospheric Administration (NOAA) provided critical assistance during the international search and rescue (SAR) and recovery efforts that followed the sinking of the tug Bourbon Rhode in Hurricane Lorenzo last fall. This intra-agency NOAA effort included Hurricane Hunters from the Aircraft Operations Center (AOC), scientists from the National Environmental Satellite, Data, and Information Service (NESDIS) and the Hurricane Research Division (HRD), and marine forecasters from the Tropical Analysis and Forecast Branch (TAFB) of the National Hurricane Center (NHC).
On the morning of Thursday, September 26, French authorities received a distress signal from the Bourbon Rhode, an offshore tug in the central Atlantic en route from the Canary Islands to Guyana with 14 crew members on board. The Bourbon Rhode had made a dangerously close approach to the eye of Hurricane Lorenzo in the central Atlantic Ocean, and water was entering towards the stern of the vessel. At 0200 Atlantic Standard Time (AST) on September 26, Lorenzo was a Category 2 hurricane with 95 knot winds and seas 12 feet or greater extending 240-330 nautical miles outward from its center. At 0800 AST, a TAFB sea state analysis – issued around the same time as the last automatic identification system (AIS) signal from the Bourbon Rhode – showed peak significant wave heights in Lorenzo of up to 41 feet. By 1400 AST, Lorenzo had strengthened to a Category 4 hurricane with maximum sustained winds of 115 knots. The Bourbon Rhode ultimately sank on September 26 in the central Atlantic Ocean.
File photo of M/V Bourbon Rhode (courtesy Bourbon Offshore)
Both of NOAA’s P-3 aircraft were preparing to fly dedicated research missions into the storm. As NOAA43 (nicknamed Miss Piggy) transited from Lakeland, Florida, to Barbados on September 26, the French government and the U.S. Coast Guard reached out and requested SAR assistance. Meanwhile, the nearest marine vessel to the incident site — a bulk carrier named SSI Excellent – diverted toward the last known position of the Bourbon Rhode. Later that day, NHC/TAFB was contacted by the USCG Rescue Coordination Center (RCC) Miami to begin providing spot forecasts for surface wind and wave conditions that would impact vessels aiding in the SAR efforts. The first TAFB point forecast for the rescue detailed the dangerous marine conditions that were still ongoing in the wake of Lorenzo, with gusty tropical-storm-force winds and combined seas of 20 feet near the incident site.
NOAA aircraft fleet in Barbados for Hurricane Lorenzo research missions. The NOAA P-3 aircraft provided critical SAR support for the Bourbon Rhode incident. Credit: LCDR Sam Urato, NOAA Corps
Flight track from NOAA43 during the Bourbon Rhode SAR mission over the central Atlantic Ocean on Sept. 27. Credit: Jon Zawislak, NOAA/AOML/HRD
NOAA43 departed Barbados on September 27 with a crew of NOAA personnel. As requested, they planned to fly over the locations of the last Bourbon Rhode distress signals and report any findings. If nothing was sighted, the crew would continue on with the planned research mission into Lorenzo. NOAA43 was the first SAR-capable asset to reach the incident site, but the crew did not find anything upon arrival.
With growing concern about the fate of Bourbon Rhode crew members, the NOAA43 crew quickly decided to abandon the Lorenzo research mission and continue SAR support. With little information besides the last-known location of the Bourbon Rhode, they quickly adapted to the situation and developed a SAR flight plan. Crew members rearranged themselves by any available window and called out locations of suspected targets or debris while surveying in the vicinity of the last known Bourbon Rhode position. Poor visibility, extremely large waves, and turbulence from strong rainbands posed difficult challenges as NOAA43 received sporadic emergency beacon signals. With only minutes left before the plane needed to head back to Barbados due to fuel limitations, crew members spotted debris and what appeared to be a life raft. This information was relayed to SSI Excellent, which was en route to the SAR area.
Convective cell in an outer rainband of Hurricane Lorenzo, taken during a NOAA43 SAR mission on September 27, 2019. The bulker SSI Excellent is also pictured. Credit: Kelly Ryan, NOAA/AOML/HRD
Flight track from NOAA42 during the Bourbon Rhode SAR mission over the central Atlantic Ocean on Sept. 28. Credit: Jon Zawislak, NOAA/AOML/HRD
On September 28, NOAA42 (nicknamed Kermit) flew a SAR mission in coordination with SSI Excellent and other supporting marine vessels across the search area. As Hurricane Lorenzo moved farther away, improving weather and marine conditions allowed the plane to fly as low as 200 feet above the ocean surface. The NOAA42 crew (see list at the end of the post) conducted visual searches while listening for emergency beacon signals, guided by previous reports from NOAA43 as well as new information from supporting ships.
The crewmembers located a large debris field and the remains of several sailors, and they directed ships to these locations so the victims could be recovered. The dedicated efforts of NOAA personnel significantly narrowed the search region and guided ships toward the area where a life raft was discovered later that day. Three Bourbon Rhode survivors were rescued from that life raft in the Atlantic Ocean.
Aerial photo of the life raft carrying three surviving Bourbon Rhode crew members on September 28, 2019. Credit: Marine Nationale (French Navy) via Facebook
NOAA assets played a pivotal role in early SAR efforts, which were led by the Maritime RCC Fort-de-France on the island of Martinique. As the international search efforts continued, TAFB provided six-hourly forecast updates on wind, wave, and weather conditions. From September 26 to October 5, 2019, TAFB produced 35 spot forecasts that were shared with RCC Miami and MRCC Fort-de-France in support of this unprecedented SAR operation. Over two weeks, 21 ships and four aircraft searched over 40,000 square miles of the central Atlantic Ocean for survivors. Four bodies were recovered and seven others were declared lost at sea after SAR efforts were officially called off on October 5.
The Bourbon Rhode incident is just one example of how TAFB has evolved to provide impact-based decision support services (IDSS) to the USCG, its primary core governmental partner. Last year, TAFB forecasters produced 56 spot forecasts for 13 marine incidents including SAR missions, distressed vessels and even a medical rescue.
In July 2019, the USCG and U.S. Air Force coordinated a rescue operation of two critically injured people off a disabled fishing vessel in the eastern North Pacific Ocean. TAFB provided spot forecast support for the rescue operation and subsequent transport of the injured people to a Mexican naval medical clinic on Socorro Island. “This information is truly impacting operations,” said Douglas Samp, Search Mission Coordinator for RCC Alameda (USCG District 11).
Additionally, TAFB forecasters prepare and deliver live briefings to USCG District leadership when tropical cyclones threaten USCG SAR regions and U.S. ports. In 2019, TAFB delivered 42 tropical briefings combined to USCG District 7 and District 8, including 25 briefings for Hurricane Dorian. “I cannot overstate how much [NHC/TAFB] insight into the storm’s effects is vital to our planning and response efforts,” said Captain Eric Smith, Chief of the Incident Management Branch for USCG District 7.
Tragedies like the Bourbon Rhode highlight the importance of TAFB’s ability to provide year-round IDSS support to core partners. In this case, the dedicated IDSS provided by TAFB forecasters, combined with the valiant efforts of NOAA AOC crew members and HRD and NESDIS researchers, played a critical role in the international rescue efforts that ultimately saved three lives.
Brad Reinhart is a meteorologist with the Tropical Analysis and Forecast Branch (TAFB) of NOAA’s National Hurricane Center in Miami, Florida. He currently serves as the TAFB focal point for core marine partners, including the U.S. Coast Guard (USCG). He holds a Bachelor of Science degree in Meteorology from Texas A&M University and a Master of Science degree in Meteorology from Florida State University.
Acknowledgments: Special thanks to Zorana Jelenak, Kelly Ryan, and Joe Sapp for sharing their personal accounts of this experience with the author. Additional thanks to Jonathan Shannon, Shirley Murillo, Jon Zawislak, Nathan Kahn, Patrick Didier, and Erica Rule for their helpful input and feedback.
This article appears courtesy of the National Hurricane Center and may be found in its original form here.
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