Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
National Weather Service forecast zones (WFZ) colored by the number of reported dust storms (1996–2017) observed. Zones without dust storms are not colored. Satellite imagery was downloaded from Google Maps (Google, Inc) on 14 March 2019 and mapped using the ggmap package in R.
