On June 16 , 2011 , a trough situated off the southern coast of Guatemala showed signs of possible tropical cyclogenesis . Though located within an area favoring development , the system remained broad and disorganized as it moved slowly west @-@ northwestward . Gradually , convection consolidated around an area of low pressure . On June 18 , a Tropical Cyclone Formation Alert was issued for the system as it was expected to develop into a tropical depression within 24 hours . On the following day , the low further developed and was declared Tropical Depression Two @-@ E by the National Hurricane Center at 1500 UTC . Upon being declared , the depression was located about 335 mi ( 540 km ) south @-@ southeast of Lázaro Cárdenas , Mexico . However , after post @-@ analysis , the depression had actually developed nine hours earlier . Maintaining a west @-@ northwesterly track in response to a subtropical ridge to the north , the depression was forecast to move into a favorable environment , characterized by low wind shear and sea surface temperatures up to 86 ° F ( 30 ° C ) . Three hours after classification , the depression strengthened Tropical Storm Beatriz , the second named storm of the season .