January 26, 2021

Weather News – Road Conditions – weather forecast

Zeta Upgraded to a Hurricane – Hurricane Research Division

2 min read


Data from NOAA and Air Force Hurricane Hunter aircraft contributed to the National Hurricane Center (NHC) upgrading Zeta to a hurricane on Monday, October 26. AOML scientists supported all the NHC and Environmental Modeling Center (EMC) tasked P-3 and G-IV missions by processing and sending data.  These missions investigated the location, intensity, and structure of Zeta and the storm’s interaction with its environment.

AMSU Microwave 89 GHz Imagery (4 km Mercator)

Scientists found a more aligned circulation based on analysis of the Tail Doppler Radar (TDR) data.  This was an indication that Zeta was intensifying over the warm Caribbean waters.   NHC issued a special advisory at 3PM EDT on Monday stating that Zeta had reached hurricane strength.  

Zoomed imagery from the TDR. Left panel shows the composited reflectivity (shaded) and right panel shows the wind speeds (shaded) and streamlines at 2 (black) and 5 km (gray).

The NHC forecast predicts Zeta will make landfall in the Yucatan peninsula Monday evening.  It is then expected to emerge into the coast sometime Tuesday morning.  NOAA has one more G-IV flight scheduled for the early hours of Tuesday morning.  This flight will be followed by continuous P-3 missions Tuesday and Wednesday until Zeta is predicted to make landfall along the Gulf coast.

>> Scientist L. Bucci
>> Edits by R. Kravetz

For details about reconnaissance aircraft missions, please see NOAA’s official Plan of the Day.


For the latest information about tropical cyclones and other weather systems, please visit the NOAA/NWS/National Hurricane Center.

For information on numerical prediction of tropical cyclones, please visit NOAA/NCEP/Environmental Modeling Center.

To access updates on the Intensity Forecasting EXperiment (IFEX) and other activities via Facebook, Twitter, or RSS feed, check out the NOAA/AOML/HRD page.

To directly access updates on IFEX HFP Operations via our WordPress blog on the web, check the site: https://noaahrd.wordpress.com/category/ifex-hurricane-field-program/

DISCLAIMER: The above discussion is intended to provide a brief summary of recent and future HRD Hurricane Field Program Operations. Any use of this material beyond its original intent is prohibited without permission of the HRD Director, Frank Marks (Frank.Marks@noaa.gov). Media inquiries should be directed to AOML Communications (aoml.communications@noaa.gov), Monica Allen (301-734-1123) or Monica.Allen@noaa.gov.



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