Hurricane Field Program Update — Thursday, October 17, 2019, 5pm EDT

We are planning two flights into Potential Tropical Cyclone 16 for Friday.  The first, with NOAA42, will depart Lakeland at 0800 EDT (1200 UTC) and perform a lawnmower pattern through and around the system The second, with NOAA43, will depart 12 hour later, and perform a butterfly pattern Both will return to Lakeland.  Both missions … Continue reading Hurricane Field Program Update — Thursday, October 17, 2019, 5pm EDT

HRD Monthly Science Meeting of October 2019

October’s science meeting consisted of seven presentations: Sim Aberson -  “A comparison of SAMURAI, HEDAS, and radar analyses for Hurricane Patricia (and a sneak peek into Dorian)” Lisa Bucci - "Understanding the response of tropical cyclone structure to the assimilation of synthetic wind profiles" Hui Christophersen - "TROPICS Radiance OSSE Update" Xiaomin Chen -  “A … Continue reading HRD Monthly Science Meeting of October 2019

Paper on how tropical cyclones in shear intensify published in Geophysical Research Letters

Summary: Tropical cyclones (TCs) are made up of thunderstorms (what we call convection), and these storms have strong winds moving up and down (what we call up- and downdrafts). Dry air enhances evaporative cooling (the same process that cools people when they sweat) from convective downdrafts, reducing the temperature and humidity in low levels; this … Continue reading Paper on how tropical cyclones in shear intensify published in Geophysical Research Letters

Paper on getting the best TC forecasts using NOAA’s G-IV published in Monthly Weather Review

Summary: During each hurricane season, NOAA’s Gulfstream-IV (G-IV) Hurricane Hunter aircraft measures wind, temperature, humidity, and pressure in and around hurricanes threatening the United States.  An instrument called the dropwindsonde is released from the G-IV to collect the data as it falls to the ocean surface.  The plane currently flies where we expect observations from the … Continue reading Paper on getting the best TC forecasts using NOAA’s G-IV published in Monthly Weather Review

Hurricane Field Program Update — Sunday, September 15, 2019, 11pm EDT

NOAA42 will conduct a NESDIS-tasked Ocean Winds mission into Hurricane Humberto on 16 September, departing Lakeland around 2 pm EDT (1800 UTC) and returning there about 8 hours later.  The aircraft will sample Humberto in a figure-four pattern and then perform maneuvers for ocean winds.  A follow-on mission is planned for Tuesday. The G-IV will … Continue reading Hurricane Field Program Update — Sunday, September 15, 2019, 11pm EDT

Hurricane Field Program Update — Saturday, September 14, 2019, 11pm EDT

NOAA42 will conduct a third EMC-tasked mission into Tropical Storm Humberto on 15 September, departing Lakeland around 5 pm EDT (2100 UTC) and returning there 4.5 hours later.  The aircraft will sample Humberto in a butterfly pattern, and possibly gather data during an overpass of the Atmospheric Dynamics Mission Aeolus satellite to help validate its … Continue reading Hurricane Field Program Update — Saturday, September 14, 2019, 11pm EDT

Hurricane Field Program Update — Friday, September 13, 2019, 11pm EDT

NOAA42 recently completed an EMC-tasked mission into what is now Tropical Storm Humberto.  The data from the mission was integral in upgrading the system from a tropical depression.  The aircraft will conduct a second such mission on 14 September, departing Lakeland around 5 pm EDT (2100 UTC) and returning there 4.5 hours later.  The aircraft … Continue reading Hurricane Field Program Update — Friday, September 13, 2019, 11pm EDT

Hurricane Field Program Update — Thursday, September 12, 2019, 9pm EDT

NOAA42 is scheduled for an EMC-tasked mission into Potential Tropical Cyclone Nine , takeoff from Lakeland at 1700 EDT (2100 UTC), returning there just about 5 hours later.  The goal is to gather Doppler radar and dropwindsonde data for assimilation into numerical models.  One-per-day flights are likely to continue until the system is no longer a … Continue reading Hurricane Field Program Update — Thursday, September 12, 2019, 9pm EDT

Hurricane Field Program Update — Wednesday, September 4, 2019, 5pm EDT

NOAA42 is currently scheduled for three more flights into Hurricane Dorian.  If they all go as scheduled, this will total 15 missions into the storm.  The first departed about an hour ago from Lakeland.  The two future flights will take off at 4am/4pm EDT (0800/2000 UTC) on 5 September.  Each will involve multiple passes through … Continue reading Hurricane Field Program Update — Wednesday, September 4, 2019, 5pm EDT

Hurricane Field Program Update — Tuesday, September 3, 2019, 7pm EDT

The tropics are even more active today, with three tropical cyclones (Hurricane Dorian, Tropical Storm Fernand, and Tropical Depression Eight) spinning in the Atlantic and keeping us busy.  NHC has tasked NOAA49 for its final synoptic surveillance missions around Dorian, departing from Lakeland at 0130 EDT (0530 UTC) and recovering there about 8 hours later.  The … Continue reading Hurricane Field Program Update — Tuesday, September 3, 2019, 7pm EDT