A surface wind field is approximated by using the wind radii from the Forecast/Advisory product as input. These radii are defined as the maximum extent of sustained winds at each threshold (tropical storm and hurricane force) in each quadrant (northeast, southeast, southwest, and northwest).
For the production of a continuous wind field, the maximum extent of the wind field for each quadrant is assumed to occur at the center of the respective quadrant - that is, for the northeast quadrant the radii is assumed to be defined only due northeast of the storm center. With this assumption the radii are defined explicitly only at the four quadrant compass directions (due northeast, southeast, southwest, and northwest), the smooth wind field depicted on the graphic is produced by a trigonometric interpolation between the four defined radii.
The wind field depicted by this methodology should be treated as approximate, as over and under representations of the wind field may occur due to interpolation and smoothing.
About Alternates - E-Mail Advisories - RSS Feeds
Latest Advisory - Past Advisories - About Advisories
Latest Products - About Marine Products
Tools & Data
Satellite Imagery - US Weather Radar - Aircraft Recon - Local Data Archive - Forecast Verification - Deadliest/Costliest/Most Intense
Learn About Hurricanes
Storm Names Wind Scale - Prepare - Climatology - NHC Glossary - NHC Acronyms - Frequently Asked Questions - AOML Hurricane-Research Division
About NHC - Mission/Vision - Other NCEP Centers - NHC Staff - Visitor Information - NHC Library
National Weather Service
National Centers for Environmental Prediction
National Hurricane Center
11691 SW 17th Street
Miami, Florida, 33165-2149 USA
Page last modified: Tuesday, 03-May-2016 14:59:59 UTC