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

Hurricane Field Program Update – Wednesday, October 10, 2018

The NOAA P-3 completed its last mission into Hurricane Michael this morning, passing through the storm four times. As in the previous three missions, we provided critical measurements of the 3-D wind, precipitation, and thermodynamic (temperature and humidity) structure of the storm from our Doppler radar, dropsondes, and flight level measurements. The data was not … Continue reading Hurricane Field Program Update – Wednesday, October 10, 2018

Hurricane Field Program Update – Tuesday, October 9, 2018, 1 PM ET

Tuesday, October 9, 2018: NOAA42:  The NOAA/NCEP/Environmental Modeling Center (EMC) has tasked the P-3 for an operational mission into Hurricane Michael. Take off from Lakeland, FL will be at 4:00 PM EDT. Four HRD scientists will be on this mission. The flight track of the mission is shown below. The goal is to collect Doppler … Continue reading Hurricane Field Program Update – Tuesday, October 9, 2018, 1 PM ET

55th Anniversary of Hurricane Flora

On the night of October 3, 1963, Hurricane Flora smashed into the southern coast of Haiti.  It raked the country with 145 mph (230 km/hr) winds and dumped tremendous downpours on its mountains.  It would become one of the deadliest and wettest Atlantic hurricanes on record. Flora began as an African easterly wave, moving over … Continue reading 55th Anniversary of Hurricane Flora

HRD Seminar – Saiprasanth Balachandran, Purdue University – 5 September 2018

Mr. Balachandran presented a seminar titled “Spatial, temporal, and spectral characteristics of convective asymmetries driving rapid intensity changes in tropical cyclones”. ABSTRACT: Understanding the role of convective asymmetries in influencing a change in tropical cyclone (TC) intensity is a challenging task. The inherent difficulty is because asymmetries can arise from different sources, occur at different … Continue reading HRD Seminar – Saiprasanth Balachandran, Purdue University – 5 September 2018

NOAA P-3 on its way for research mission into Hurricane Florence

After two successful research missions on Saturday and Sunday, the crew of the NOAA P-3, which includes AOML/HRD scientists, are on their way inbound to Hurricane Florence to accomplish objectives related to the Hurricane Field Program - Intensity Forecast Experiment's, "Mature Stage Experiment." The goal is to collect observations from the Tail Doppler radar, dropsondes, … Continue reading NOAA P-3 on its way for research mission into Hurricane Florence

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