SWDI vignette

Scott Chamberlain


SWDI is the Severe Weather Data Inventory. SWDI is an (quoting)

integrated database of severe weather records for the United States. The records in SWDI come from a variety of sources in the NCDC archive. SWDI provides the ability to search through all of these data to find records covering a particular time period and geographic region, and to download the results of your search in a variety of formats. The formats currently supported are Shapefile (for GIS), KMZ (for Google Earth), CSV (comma-separated), and XML.

Data available in SWDI are:

Find out more about SWDI at http://www.ncdc.noaa.gov/swdi/#Intro.

Load rnoaa


Search for nx3tvs data from 5 May 2006 to 6 May 2006

swdi(dataset='nx3tvs', startdate='20060505', enddate='20060506')

Use an id

out <- swdi(dataset='warn', startdate='20060506', enddate='20060507', id=533623)
list(out$meta, head(out$data), head(out$shape))

Get all ‘plsr’ within the bounding box (-91,30,-90,31)

swdi(dataset='plsr', startdate='20060505', enddate='20060510', bbox=c(-91,30,-90,31))

Get all ‘nx3tvs’ within the tile -102.1/32.6 (-102.15,32.55,-102.25,32.65)

swdi(dataset='nx3tvs', startdate='20060506', enddate='20060507', tile=c(-102.12,32.62))



Get daily count nx3tvs features on .1 degree grid centered at latitude = 32.7 and longitude = -102.0

swdi(dataset='nx3tvs', startdate='20060505', enddate='20090516', stat='tilesum:-102.0,32.7')

Get data in different formats

CSV format

SHP format

KMZ format