Hurricane Field Program Update – Sunday, Aug. 20, 2017

OPERATIONS Sunday, 20 Aug. 2017 G-IV: No flights are scheduled. NOAA42: The mechanical issue on the aircraft is resolved. There are no science interest in flying Harvey therefore all fights are canceled. NASA EPOCH-NOAA UAS Global Hawk:  No flights are scheduled. Monday, 21 Aug. 2017 G-IV: No flights are scheduled. NOAA42: The P3 will ferry […]

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Hurricane Field Program Update – Saturday, Aug. 19, 2017

OPERATIONS Saturday, 19 Aug. 2017 G-IV: No flights are scheduled. NOAA42: N42RF was scheduled to fly an NHC-tasked reconnaissance mission into Tropical Storm Harvey with a take off time of 18Z (2PM ET). This flight is cancelled due to a mechanical issue. NASA EPOCH-NOAA UAS Global Hawk:  No flights are scheduled. Sunday, 20 Aug. 2017 G-IV: No flights […]

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25th anniversary of first tropical cyclone track forecast from NOAA’s Global Model

At 00 UTC, a new implementation of NOAA’s global spectral model, then called the Aviation Model, produced a track forecast for Tropical Storm Andrew in the Atlantic.  Earlier in the year, the model was upgraded so that it now had a resolution of about 210 km, and it had 18 levels in the vertical.  Compare […]

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Hurricane Field Program Update – Friday, Aug. 18, 2017 11AM Eastern

OPERATIONS Friday, 18 Aug. 2017 G-IV: No flights are scheduled. NOAA42: N42RF will ferry to St. Croix, U.S. Virgin Islands in preparation for NHC-tasked reconnaissance missions. No HRD scientists will be on the flight. NASA EPOCH-NOAA UAS Global Hawk:  The Global Hawk is scheduled to perform a 3-hr range test flight. Take off is scheduled for […]

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Hurricane Field Program Update – Thursday, Aug. 17, 2017 5PM Eastern

OPERATIONS Thursday, 17 Aug. 2017 G-IV: No flights are scheduled. NOAA42: No flights are scheduled. Global Hawk:  No flights are scheduled. Friday, 18 Aug. 2017 G-IV: No flights are scheduled. NOAA42: NOAA42 will ferry to St. Croix in preparation for NHC-tasked reconnaissance missions.  No HRD scientists will be on the flight. Global Hawk:  No flights […]

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Review of extratropical transition released online in Monthly Weather Review

Summary: When tropical cyclones move out of the tropics toward the poles, they reach areas where fronts exist and where the ocean, whose warm water fuels tropical storms, is relatively cool. When this happens, the storms go through extratropical transition (ET) and become like other storms in the mid latitudes. The storms can cause catastrophic […]

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HRD Debrief for missions into Hurricane Franklin – 15 August 2017

HRD researchers discussed the results from the two P-3 and one Global Hawk mission into Hurricane Franklin (8-9 August 2017). The agenda for the discussion was: Mission Overview (Reasor) Science Discussions 20170808H1 (Zawislak) 20170809H1 (Rogers) EMC input (Sippel) Additional field program issues Slides from the debrief are available at: ftp://ftp.aoml.noaa.gov/pub/hrd/blog/meetings/2017/HFP/franklin17_debrief_main.pptx  

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Paper on the accuracy of surface windspeed analyses published in Monthly Weather Review

Summary:  Sometimes, the wind at the surface around a hurricane is the same around the storm center (what we call a symmetric pattern), and at other times, it is different (what we call an asymmetric pattern). In addition, sometimes the wind pattern stays the same, and sometimes it changes quickly. This study looks at how […]

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HRD Data User’s Survey invites feedback

If you use HRD’s data, NOAA/AOML’s Hurricane Research Division (HRD) invites feedback on your experiences obtaining and using data sets provided by HRD (a list of available products can be found at http://www.aoml.noaa.gov/hrd/data_sub/products.html).  We value your time in filling out this important survey, as it will provide critical guidance for HRD scientists as we seek […]

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HRD Monthly Science Meeting of August 2017

August’s science meeting consisted of 5 presentations: Jason Sippel: “Examining impact of recon in operational HWRF” Steve Diaz: “Demonstration of solver-independent regridding operation for a moving hurricane nest” Joe Cione: “Infrared Sea Surface Temperature Measurements from Hurricane Edouard (2014) using GPS dropsondes” John Kaplan: “Hurricane Franklin (2017): A Preliminary Look from a Global Hawk-P3 Perspective” […]

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