The thunderstorms in northwest Oklahoma are developing along a “dry line,” which separates the moist unstable air to the east from very dry air (humidity less than 5% in places) and blowing dust to the west. Visibilities are one mile or less in the Texas Panhandle.
Update 4:02pm. City of Borger is being threatened by a large wildfire in the blowing dust area. In addition:
A MANDATORY EVACUATION ORDER HAS BEEN ISSUED FOR THE FOLLOWING
LOCATIONS: RICHLAND ACRES...RANCH ACRES...AND CANYON COUNTRY
CLUB...AND THEN ALSO FOR TIMBERCREEK CANYON...PALISADES...AND LAKE
TANGLEWOOD. RESIDENT SHOULD EVACUATE IMMEDIATELY.