Paper on how eyewall replacement cycles start published in The Journal of the Atmospheric Sciences

Summary: When hurricanes become strong, they sometimes form a second eyewall around the main eyewall. This second ring of strong winds and heavy rain means that strong, damaging winds could cover a larger area than before. However, it also means that the storm might temporarily weaken. Understanding and predicting this process is therefore very important. …

Paper on the new Doppler Wind Lidar on the NOAA Hurricane Hunters published in Remote Sensing

Summary: The warm ocean provides the energy for tropical cyclones to form and intensify. Knowing what is happening in the air immediately above this warm ocean (called the boundary layer) tells us how that energy gets into the air. So, it is important to know what is happening there to accurately predict how strong a …

HRD Debrief for missions into Tropical Storm Chris – 19 July 2018

HRD researchers discussed the results from the 4 P-3 missions into AL03 Tropical Storm Chris (8-9 July 2018). The agenda for the discussion was: Missions Overview (Jon Zawislak) Mission Summaries 20180708H1 TDR (Kelly Ryan) 20180708H2 TDR (Hui Christophersen) 20180709H1 TDR (Kelly Ryan) 20180709H2 TDR (Gus Alaka) Discussion Slides from the debrief are available at: ftp://ftp.aoml.noaa.gov/pub/hrd/blog/meetings/2018/HFP/2018HFP_Chris_Debrief.pptx

HRD Monthly Science Meeting of July 2018

July’s science meeting consisted of four presentations: Erin Jones – Simulating Observations of Gravity Waves Radiating from Hurricanes Miguel Cortez - Summer 2018 Nerto Work Plan Sim Aberson – A comparison of track forecasts from NOAA’s GFS and ECMWF’s IFS for Hurricane Irma Jon Zawislak - 2018 NOAA/AOML/HRD Hurricane Field Program Intensity Forecast Experiment (IFEX) …

HRD Scientists brief NOAA Aircraft Operations Center personnel on IFEX 2018, Lakeland, FL – 21 June 2018

Intensity Forecast Experiment (IFEX) Program Director Jon Zawislak and HRD Director Frank Marks briefed the Aircraft Operations Center (AOC) personnel at their brand new facility at Lakeland Linder Regional Airport on IFEX plans for 2018 and Hurricane Forecast Improvement Project progress, respectively. The two presentations are available in a .zip archive on the anonymous ftp …

NOAA Hurricane Hunters complete another mission into Tropical Storm Chris

The NOAA Hurricane Hunters have just completed a third mission into Tropical Storm Chris, which is sitting nearly stationary off the Carolinas. HRD scientists have been onboard these missions. The most recently completed mission executed a rotated Figure-4 pattern, with four crossings of the center of Chris (image below). This pattern allows us to get …

Hurricane Field Program Update – Monday, July 9, 2018, 9 AM ET

OPERATIONS Monday, July 9, 2018: NOAA42: The P-3 is completing an EMC-tasked mission into Tropical Storm Chris that took off at 4:30 AM ET. Three HRD scientists are on this flight. NOAA42: The P-3 is tasked by EMC to fly a TDR mission into Tropical Storm Chris. Takeoff is scheduled for 4:30 PM ET (2030 UTC) from …

Hurricane Field Program Update – Sunday, July 8, 2018, 11 AM ET

OPERATIONS Sunday, July 8, 2018: NOAA42: The P-3 is completing an EMC-tasked mission into Tropical Storm Chris that took off at 4:30 AM ET. NOAA42: The P-3 is tasked by EMC to fly a TDR mission into Tropical Storm Chris. Takeoff is scheduled for 4:30 PM ET (2030 UTC) from Lakeland Linder Regional Airport. Three HRD scientists …