Complex sentence: By October 8, a second reconnaissance flight into Irene recorded a minimum atmospheric pressure of 1001 mbar (hPa; 29.56 inHg), and the storm came ashore near Pensacola, Florida late during the day as a well-organized tropical storm.
Split into simpler sentences: By October 8, a second reconnaissance flight into Irene recorded a minimum atmospheric pressure of 1001 mbar (hPa; 29.56 inHg). Soon thereafter, the storm came ashore near Pensacola, Florida late during the day as a well-organized tropical storm.