NOAA news release about the end of the 2022 hurricane season

"This season, NOAA Hurricane Hunter aircraft flew over 582 mission hours to collect atmospheric data that is critical to hurricane forecasting and research, passing through the eye of a hurricane 65 times and deploying over 1,700 scientific instruments. NOAA’s Gulfstream IV-SP also flew a research mission from Cabo Verde, Africa, in August. This historic mission … Continue reading NOAA news release about the end of the 2022 hurricane season

Paper on the impact of ocean surface waves in intensity forecasts published in The Journal of Geophysical Research Oceans

Ocean surface waves affect the exchange of momentum and energy between the ocean and the atmosphere.  However, the impact on tropical cyclone intensity and structure in fully coupled numerical models has not been well-understood. This study used a regional atmosphere-ocean-wave coupled model to study the wave impacts.  Simulations of 21 real tropical cyclones were conducted. … Continue reading Paper on the impact of ocean surface waves in intensity forecasts published in The Journal of Geophysical Research Oceans

Recap of Julia and Lisa flights

NOAA conducted two flights into Julia and five into Lisa during October of this year, all in the Caribbean Sea. The main purpose of all the missions was to gather Doppler Radar and dropwindsonde data for ingestion into NOAA's computer models to improve forecasts. Flight tracks of missions into Julia (left) and Lisa (right) during … Continue reading Recap of Julia and Lisa flights

HRD scientists attend Hurricane Forecast Improvement Program Annual Meeting

Last week, researchers from HRD attended the 2022 Hurricane Forecast Improvement Program (HFIP) Annual Meeting in Miami, Florida.  Group photo of some of the participants of the 2022 HFIP Annual Meeting, both in person and virtually.  The primary objective of this meeting was to discuss key HFIP strategies including advances to NOAA's next-generation Hurricane Analysis and Forecast … Continue reading HRD scientists attend Hurricane Forecast Improvement Program Annual Meeting

Hurricane and Ocean Testbed Technical Workshop

NOAA P-3 data and satellite imagery overlain during a mission into Lisa. Data from the Imaging Wind and Rain Airborne Profiler (showing wind and rain directly below the aircraft), Tail Doppler radar (measuring wind speed and direction throughout the storm), Wide-Swath Radar Altimeter (wave height below the aircraft), and flight-level instruments are all shown. During … Continue reading Hurricane and Ocean Testbed Technical Workshop

Recap of Hurricane Ian flights

In September, NOAA conducted 15 missions in and around Hurricane Ian before its historic landfall in Florida. Among these were 8 P-3 missions and 7 synoptic surveillance missions conducted by the G-IV. One hundred forty-three dropwindsondes were released along with 18 Airborne Expendable Bathythermographs to measure profiles in the atmosphere and the ocean underneath Ian. … Continue reading Recap of Hurricane Ian flights

Investigating vertical wind shear influences on tropical cyclone intensity change

Scientists at NOAA’s Atlantic Oceanographic & Meteorological Laboratory (AOML) and the University of Miami’s Cooperative Institute of Marine & Atmospheric Studies (CIMAS) examine the challenges of accurately predicting when a tropical cyclone will begin a quick and sudden increase in intensity (called rapid intensification or RI) in a new study published in Monthly Weather Review. The paper analyzes a group (ensemble) of computer model … Continue reading Investigating vertical wind shear influences on tropical cyclone intensity change

Review of how aircraft data are ingested into forecast models for tropical cyclones published in the Annals of the New York Academy of Science

This book chapter reviews how data are ingested into computer models and summarizes recent advances in how data relevant to tropical cyclones are used. Figure.  The impact of ingesting hurricane hunter data on predictions of storm intensity from NOAA’s state-of-the-art hurricane model, the Hurricane Weather Research and Forecast Model.  In this figure, the impact of … Continue reading Review of how aircraft data are ingested into forecast models for tropical cyclones published in the Annals of the New York Academy of Science

Study on how weak, disorganized tropical cyclones become upright allowing for intensification published in the Journal of Geophysical Research

This study shows how weak, disorganized tropical cyclones that have different center locations with height (misalignment) can develop a vertically aligned structure. The ability to predict whether and when a tropical cyclone will become aligned is important for intensity change forecasts, as storms can intensify quickly after achieving it. This study will help improve forecasts … Continue reading Study on how weak, disorganized tropical cyclones become upright allowing for intensification published in the Journal of Geophysical Research

Meet HRD scientist Gus Alaka

Gus researches the relationship of the large-scale environment with hurricane formation and interactions between multiple storms. He also works closely with numerical hurricane models, including the Hurricane Analysis and Forecast System (HAFS), which is #NOAA’s next-generation hurricane prediction system. He flies on Hurricane Hunter missions to collect critical data that improve hurricane forecasts.  One of Gus’ … Continue reading Meet HRD scientist Gus Alaka