Issued on: August 21, 2026
A thunderstorm complex in eastern Oklahoma disrupted the convergent wind pattern this morning.  This complex washed or moved away ozone precursors and other pollutants to an unclear extent.  As a result, this forecast carries high uncertainty.  The showers will clear away and leave sunshine, which increases ozone for this afternoon.  Light southerly breezes will bring Saharan dust to Oklahoma throughout the forecast period.  The heat dome over the southwestern states will persist, but isolated rain showers may limit extreme temperatures and ozone concentrations and disrupt the wind patterns.  The hot pattern will persist into September.