15Z 26 FEB 2009 Surface Chart with Boundaries
In this case a dryline extends from extreme western OK into TX. The line is placed along the 45 degree isodrotherm, the location where the dryline is typically found. The wind shift along the boundary is very good along the northern part, but weaker along the southern portion.
The main wind shift line extends from the OK panhandle, into central KS, then eastward into central MO. The boundary across eastern KS and central MO is on the south edge of some fog, reminding one of a typical warm front where fog is found on the cool side of the front. The air over western KS has lower dewpoints than the air to the east. The cyclonic wind shift along these boundaries is good.
A southward moving cold front is seen across southern NE into western IA. Much colder air and north to northwest winds identify this air. Winds on the cold side of the front a northerly compared to winds over IA and northern MO.