The map shows the national NEXRAD base reflectivity composite from the Iowa Environmental Mesonet, updated every five minutes. Play the loop to watch the last hour of storms move across the Eastern Sierra, Mono County and the Owens Valley, and zoom in to town level around Mammoth Lakes, June Lake, Bishop and Lone Pine.

Radar coverage east of the Sierra crest is limited. The nearest radars sit near Reno, in the San Joaquin Valley and in the Mojave Desert, and the high terrain blocks their lowest beams, so light snow and shallow showers over the Eastside often go undetected. When the radar looks quiet but the mountains are socked in, check the weather stations and webcams, and see the Mammoth forecast for what is coming next.