 Abby was an unusually small storm , with its entire circulation being far less than 100 mi ( 160 km ) in diameter . Around 16 : 00 UTC ( 11 : 00 a.m. CDT ) on August 7 , reconnaissance measured a central barometric pressure of 1000 mbar ( hPa ; 29 @.@ 53 inHg ) within Abby , the lowest in relation to the system . They also reported peak winds of 85 mph ( 140 km / h ) in squalls , which would rank as a Category 1 hurricane on the modern @-@ day Saffir – Simpson hurricane wind scale . These winds were seen to be an <unk> by forecasters and discarded , however . The system attained its maximum winds of 65 mph ( 100 km / h ) by 18 : 00 UTC ( 1 : 00 p.m. CDT ) and subsequently made landfall just northeast of Matagorda , Texas at 22 : 00 UTC ( 5 : 00 p.m. CDT ) . <unk> <unk> , a forecaster at the Weather Bureau ( now known as the National Weather Service ) in Galveston , described the storm as a " perfectly miniature hurricane . " Despite moving onshore , Abby 's core continued to organize and it developed a closed eyewall roughly three hours later . Thereafter the storm began to gradually weaken , passing over Edna around 02 : 00 UTC on August 8 ( 9 : 00 p.m. CDT on August 7 ) . <unk> to a depression hours later , Abby ultimately degenerated into an area of showers and dissipated southwest of San Antonio by 12 : 00 UTC ( 7 : 00 a.m. CDT ) . 
