From NWS
1992: Thunderstorms moved into south central Iowa on the morning of September 14th and continued to redevelop over the same region until about noon on the 15th. This resulted in very heavy rainfall in some areas with two-day accumulations including 9.41 inches at Osceola, 11.05 inches at Promise City, and 12.06 inches at Derby with 11.70 inches of that total falling in just 24 hours. Portions of at least 12 counties recorded very heavy rain with major flooding occurring on the Chariton River and Grand River.

1961: The approaching remains of hurricane Carla produced heavy rain across Iowa on September 12th-14th before crossing the southeastern corner of the state on the 14th. Many stations reported September record 24-hour rainfall totals from the 12th-13th including 8.03 inches at Chariton, 6.50 inches at Clinton, 5.96 inches at Burlington, 5.80 inches at Dubuque, and 4.47 inches at Des Moines. By the end of the month most stations especially across the southeastern half of Iowa had recorded their wettest September ever, with some locations reporting their highest precipitation total of any month on record.

1905: A thunderstorm moved through Indianola during the Warren County Fair. Lightning struck the center pole of a large tent filled with spectators, killing four people and severely injuring several others. Elsewhere around the city several telephone poles were burned and a livery barn was struck and set on fire.

14 September 1984 → In West Goshen Township, PA lightning struck a soccer field leaving 26 people injured and 4 people hospitalized. 14 September 1988 → Hurricane Gilbert devastated Jamaica. It had winds up to 184 mph and a barometric pressure of 26.2 inches. It caused serious flooding in the Monterrey region when it later made landfall in northern Mexico.

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