A dust-storm advisory will be in effect until 8 p.m. for the southeastern desert communities of San Diego County due to gusty winds that have generated a “wall” of thick brown dust.
In addition, the National Weather Service warned Julian about possible hail storms and Alpine, Pine Valley and Harbison Canyon about thunderstorms through 6:15 p.m. and 6:30 p.m. respectively.
The dust storm is moving to the west out of Imperial County, according to the NWS.
The conditions are producing severe winds and reducing visibility to less than a quarter of a mile, the agency reports.
Motorists driving in the affected areas are urged to exercise “extreme caution.”
– Staff and wire reports