Paper on how getting turbulence correct in forecast models can improve intensity forecasts in sheared storms released online in Monthly Weather Review

Summary:  Though tropical cyclones (TCs) are usually hundreds of miles across, the strongest wind occurs in gusts that can be smaller than 100 yards across, or the size of a football field. We call features that cover such a small area the “turbulent scale.” Other features that are important in forecasting TCs can be as … Continue reading Paper on how getting turbulence correct in forecast models can improve intensity forecasts in sheared storms released online in Monthly Weather Review

HRD Debrief for missions into Hurricane Michael – 26 October 2018

HRD researchers discussed the results from the 6 P-3 and 3 G-IV missions into Hurricane Michael, AL14 (8-10 October 2018). The agenda for the discussion was: Agenda: Missions Overview (Jon Zawislak) Deployment Overview (Jon Zawislak) 20181008H1 (Kelly Ryan) 20181009H1 (Rob Rogers) 20181009N2 (Jason Dunion/ John Kaplan) 20181009H2/Coyote (Kelly Ryan) 20181010H1 (Rob Rogers/ Jon Zawislak) EMC … Continue reading HRD Debrief for missions into Hurricane Michael – 26 October 2018

HRD Debrief for missions into Hurricane Florence, EP96 Genesis, and G-IV SAL Mission – 22 October 2018

HRD researchers discussed the results from the 3 P-3 and 9 G-IV missions into Hurricane Florence, AL06 (8-13 September 2018). The agenda for the discussion was: Agenda: Missions Overview (Jon Zawislak) Deployment Overview 20180908H1 (Jon Zawislak) 20180909H1 (Jon Zawislak) 20180910H1 (Jon Zawislak) NESDIS / Ocean Winds (Joe Sapp NESDIS) HRD researchers also discussed the results … Continue reading HRD Debrief for missions into Hurricane Florence, EP96 Genesis, and G-IV SAL Mission – 22 October 2018

HRD Debrief for missions into Tropical Storm Gordon and Hurricane Isaac – 17 October 2018

HRD researchers discussed the results from the 3 P-3 missions into Tropical Storm Gordon, AL07 (3-4 September 2018) . The agenda for the discussion was: Agenda: Missions Overview (Jon Zawislak) Deployment Overview (Jon Zawislak) 180903H1 (Robert Rogers) 180904H1 (Ghassan Alaka) 180904H2 (Hui Christophersen) HRD researchers also discussed the results from the 5 P-3 missions into … Continue reading HRD Debrief for missions into Tropical Storm Gordon and Hurricane Isaac – 17 October 2018

Hurricane Field Program Update – Saturday, September 8, 2018, 11 AM ET

Saturday, September 8, 2018 NOAA42: The P-3 is flying an HRD and NESDIS tasked research mission into Tropical Storm Florence, that took off from Bermuda this morning at 08:00 AM EDT. 3 HRD scientists are on this mission. The P-3 flew a partial high-altitude circumnavigation around the eastern side of Florence, followed by a butterfly … Continue reading Hurricane Field Program Update – Saturday, September 8, 2018, 11 AM ET

HRD Debrief for missions into Hurricane Lane – 30 August 2018

HRD researchers discussed the results from the 4 G-IV and 4 P-3 missions into Central Pacific Hurricane Lane (19-23 August 2018) representing the first NOAA P-3 mission to fly a Central Pacific storm. The agenda for the discussion was: Agenda: Storm Overview (Jon Zawislak) Missions Overview (Jon Zawislak) Deployment Overview (Jon Zawislak) CPHC Feedback (Tom Birchard, … Continue reading HRD Debrief for missions into Hurricane Lane – 30 August 2018

Paper on low-level downdrafts and their impact on intensity published in Monthly Weather Review

Summary: In this study, we looked at radar, thermodynamic (temperature and humidity), and sea surface temperature data from the National Oceanic and Atmospheric Administration Hurricane Hunter and National Aeronautics and Space Administration aircraft in Hurricane Earl (2010). We found that there are different types of downdrafts (air moving downward) near the strongest part of the … Continue reading Paper on low-level downdrafts and their impact on intensity published in Monthly Weather Review

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