From NWS
1979: Thunderstorms affected about the western third of Iowa producing heavy rain at some northwestern locations. The highest accumulation occurred at Sioux City where 4.42 inches of rain broke the all-time single day October record at that location by more than 2 inches.

1950: Unseasonably warm weather set in during the last few days of October with the warmest readings coming on the 30th when temperatures soared into the 80s across virtually the entire state and even reached 90 F at a couple of locations. Reported high temperatures included 88 F at Indianola, Missouri Valley, Mount Pleasant, Spencer, and Toledo, 89 F at Hawarden and Rock Rapids, 90 F at Sioux Rapids, and 92 F at Keokuk.

30 October 1947 → The Donora, PA smog disaster finally came to an end. For five days pollution from industry in the area was trapped in the lower atmosphere over the Monongahela Valley, killing 20 people and making 2000 people sick. 30 October 2004 → University of Hawaii students visiting the library had to escape through a window due to surging flood waters. 30 October 2011 → An unusually severe early season winter storm swept up the Appalachians into New England. Over a foot of snow fell from West Virginia to Maine, with more than two feet in the mountains of Massachusetts and New Hampshire. Winds over 50 mph were reported on Nantucket Island and Martha’s Vineyard.

Posted under Weather History