National Weather Service United States Department of Commerce

Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Fig. 18. Radar base reflectivity from 2206 to 2340 UTC showing convection along an east- to-west oriented segment of Claudette’s outer rainband north of the storm’s center. At least two storms seen in the loop were relatively long lived and displayed evidence of storm scale organization.