It was upgraded to Tropical Storm Beryl late on August 14 with surface winds of , based on reconnaissance aircraft observation. Six hours later, the storm accelerated to near , meaning that landfall would happen sooner than expected, preventing the time for Beryl to strengthen to a hurricane. However, Beryl failed to undergo significant intensification as was forecast, as it maintained an intensity of .
The upgrade to Tropical Storm Beryl was due to increased wind speeds observed by aircraft on August 14. The rapid acceleration to near Category 1 status indicated a faster-than-expected landfall time, which would have allowed the storm to strengthen into a hurricane. However, Beryl failed to intensify as predicted.