ext_tracks_wind | R Documentation |
A dataframe with storm winds based on the wind radii in the extended best tracks hurricane data for historical Atlantic basin storms.
ext_tracks_wind
A dataframe with 203,660 rows and 5 variables:
County's 5-digit Federal Information Processing Standard (FIPS) code
Maximum modeled gust wind speed in the county during the storm.
Maximum modeled sustained wind speed in the county during the storm.
Minutes sustained wind was above 34 knots in the county during the storm.
Unique storm identifier with the storm name and year, separated by a hyphen (e.g., "Alberto-1988", "Katrina-2005").
To calculate the wind values in this dataset, we used the wind radii from the HURDAT2 dataset for Atlantic-basin tropical storms (see the reference and source). These wind radii provide the radius in each of four quadrants (northeast, southeast, southwest, and northwest) from the storm's center for each of the 6-hour storm observations. We interpolated this data to every 15 minutes using linear interpolation (Section 3.3. of Press et al. (1992)) and scaled each radius to 0.85 of its full value (the original radius gives the maximum extent of 64-knot, 50-knot, and 34-knot winds in each quadrant). For each 15-minute point along the storm's track, we determined which counties fell within each wind radius. We then determined, for each county, the maximum wind value over the course of the storm. These wind values are limited to 34 knots, 50 knots, and 64 knots; if a county is reported as having 64-knot winds in this dataset, it therefore means that the county fell within 0.85 times the 64-knot maximum wind radius at least once during the storm, and so can be interpreted as the county likely experiencing at least 64-knot winds during the course of the storm.
Gust wind speed was calculated using a gust factor of 1.49 applied to the estimated
sustained wind speed (see the "Details" vignette of the stormwindmodel
package for more details on the choice of this gust factor). Durations were based
on the number of minutes winds were above 34 knots in the county over the course of
the storm.
Brooke Anderson brooke.anderson@colostate.edu Andrea Schumacher andrea.schumacher@colostate.edu
HURDAT2 data were obtained from: https://www.nhc.noaa.gov/data/
Landsea CW, Franklin JL, Beven JL. May 2015. The revised Atlantic hurricane database (HURDAT2). United States National Oceanic and Atmospheric Administration's National Weather Service. https://www.nhc.noaa.gov/data/hurdat/hurdat2-format-atlantic.pdf Retrieved November 28, 2019.
Press WH, Teukolsky SA, Vetterling WT, Flannery BP. 1992. Numerical Recipes in Fortran 77: The Art of Scientific Computing. Cambridge University Press.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.