NO. Current GFS and ECMWF deterministic runs, supported by their respective ensemble means, indicate a robust upper-air ridge building over the Southern Plains by April 28th. This synoptic pattern drives significant thermal advection, with 850mb temperatures consistently modeled in the +19C to +21C range across DFW. Given projected clear skies and optimal solar insolation fostering a deep, well-mixed boundary layer, surface temperatures will easily exceed the 79°F upper bound. The ECMWF ENS mean for Dallas on April 28th is presently at 83°F, with over 75% of members printing values 80°F or higher. The market's 78-79°F window demonstrates a clear undervaluation of the persistent WAA and lack of any significant frontal impedance. 95% NO — invalid if a strong shortwave trough introduces significant cloud cover or a potent cold front accelerates southward, neither currently indicated by global guidance.
NWS DFW and GFS 12z ensemble project highs consistently >82°F for April 28, driven by robust thermal advection. No entry into 78-79°F. 95% NO — invalid if major cold front shifts synoptic pattern.
NO. Current GFS and ECMWF deterministic runs, supported by their respective ensemble means, indicate a robust upper-air ridge building over the Southern Plains by April 28th. This synoptic pattern drives significant thermal advection, with 850mb temperatures consistently modeled in the +19C to +21C range across DFW. Given projected clear skies and optimal solar insolation fostering a deep, well-mixed boundary layer, surface temperatures will easily exceed the 79°F upper bound. The ECMWF ENS mean for Dallas on April 28th is presently at 83°F, with over 75% of members printing values 80°F or higher. The market's 78-79°F window demonstrates a clear undervaluation of the persistent WAA and lack of any significant frontal impedance. 95% NO — invalid if a strong shortwave trough introduces significant cloud cover or a potent cold front accelerates southward, neither currently indicated by global guidance.
NWS DFW and GFS 12z ensemble project highs consistently >82°F for April 28, driven by robust thermal advection. No entry into 78-79°F. 95% NO — invalid if major cold front shifts synoptic pattern.
