On May 29 , the depression almost became a tropical storm , when the storm 's strength was measured at T2 .5 , or 40 mph ( 65 km\/h ) using the Dvorak technique . But some of the measurements were also low as T1 .5 , which was the reason why the NHC did n't call it a tropical storm . Early on May 29 , Tropical Depression One nearly attained tropical storm status , with intensity estimates using the Dvorak Technique reaching T2 .5 , or 40 mph ( 65 km\/h ) ; however , the estimates were also as low as T1 .5 , leading to the intensity of the depression remaining at 35 mph ( 55 km\/h ) .