Mini-Dropwindsonde data from Global Hawk used in forecast models for the first time during Hurricane Franklin

For the first time, data from mini-dropwindsondes released by the Global Hawk aircraft were used by NOAA Global Forecast System to predict where Franklin might track, how strong it would get, and other weather around the globe.  A total of 48 mini-dropsondes were released by the Global Hawk on the morning and afternoon of 9 […]

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Hurricane Field Program Update – Wednesday, Aug. 9, 2017 11AM Eastern

OPERATIONS Wednesday, 9 Aug. 2017 G-IV: No flights are scheduled. NOAA42: Is flying a Tail Doppler Radar mission into Tropical Storm Franklin. Take off was around 0800 UTC (4:00AM Eastern) from Lakeland Linder Regional Airport, Lakeland, FL. Three HRD scientists are on this flight. Global Hawk:  Is currently flying over Tropical Storm Franklin and scheduled to land […]

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Second P3 flight into Franklin

The flight and science crew are up early and ready for their second flight into Franklin. NOAA P3 Hurricane hunter aircraft will take off at 4AM Eastern (0800 UTC) from Lakeland Linder Regional Airport, Lakeland, FL for a seven mission. The data from this flight will go into the weather forecast models. Below is the proposed […]

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The Global Hawk sets up for its first flight of the 2017 hurricane season

As part of NASA’s East Pacific Origins and Characteristics of Hurricanes (EPOCH) field campaign, the Global Hawk is scheduled to fly tonight for a 22-h mission over Tropical Storm Franklin. The Global Hawk will take off at 7PM Pacific (10PM Eastern) from NASA’s Armstrong Research Flight Facility, in Edwards, CA. Here is the proposed flight track […]

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Paper on accounting for the location of dropwindsondes during measurements published in the Journal of Atmospheric and Oceanic Technology

Summary: Hurricane Hunter aircraft have been releasing instruments called dropwindsondes to measure pressure, temperature, moisture, and wind speed and direction in hurricanes for two decades. Data from dropwindsondes released near the storms have led to better forecasts of where they will go, but improvements to forecasts of how strong they will get have lagged. Part […]

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NOAA’s hurricane field program begins

We begin our first flight of the 2017 Atlantic hurricane season this evening. Our P3 Hurricane hunter aircraft will take off at 6PM Eastern (2200 UTC) from Lakeland Linder Regional Airport, Lakeland, FL, for a 6.5-hour mission into Tropical Storm Franklin. The flight was requested by NOAA’s Environmental Modeling Center who are interested in the tail Doppler […]

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5th Anniversary of Hurricane Ernesto

On August 8, 2012, Hurricane Ernesto struck the Mexican state of Quintana Roo on the Yucatan peninsula.  As a Category-One hurricane, it dumped copious rain across the Yucatan and southern Mexico.  Its remnants reformed in the eastern Pacific as a tropical storm. Ernesto formed from an African easterly wave, which moved off the African coast […]

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Hurricane Field Program Update – Tuesday, Aug. 8, 2017 11AM Eastern

OPERATIONS Tuesday, 8 Aug. 2017 G-IV:  No flights are scheduled. NOAA42: Is scheduled fly a Tail Doppler Radar mission into Tropical Storm Franklin. Take off is scheduled for 2200 UTC (6:00PM Eastern) to and from Lakeland Linder Regional Airport, Lakeland, FL. Three HRD scientists will be on this flight. Global Hawk: Is scheduled to fly a mission over […]

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Hurricane Field Program Update – Monday, Aug. 7, 2017 11 AM Eastern

OPERATIONS Monday, 7 Aug. 2017 G-IV: No flights are scheduled. NOAA42: No flights are scheduled. Global Hawk: No flights are scheduled. Tuesday, 8 Oct. 2017 G-IV:  No flights are scheduled. NOAA42: Is scheduled fly a Tail Doppler Radar mission into Tropical Storm Franklin. Take off is scheduled for 2000 UTC (4:00 PM Eastern) to and from Lakeland […]

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20th anniversary of the first ever dropwindsonde observation in a hurricane eyewall

For decades, meteorologists used dropwindsondes, weather instrument packages deployed from aircraft, to make atmospheric soundings below flight level.  Starting in the 1970s they used Omega dropwindsondes (ODWs) that employed the very low-frequency Omega navigation signals to estimate the ODW’s motion relative to the aircraft, and subsequently calculate the wind.  Because of the limitations of this system, […]

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