Today in Weather History:
for this day July 17

July 17, 1934
One of the worst heat waves in the history of the nation commenced. During the last two weeks of the month extreme heat claimed 679 lives in Michigan, including 300 in Detroit alone. (The Weather Channel)

July 17, 1941
A prolonged heat wave over Washington State finally came to an end. Lightning from untimely thunderstorms was responsible for 598 forest fires. (David Ludlum)

July 17, 1952
Thunderstorms helped the temperatur at Key West, FL, to dip to 69 degrees, to equal their July record established on the first of July in 1923. (The Weather Channel)

July 17, 1957
On a warm and sunny day at Wilmington, DE, with a high of 86 degrees, a dust devil suddenly appeared. It tore most the roof off one house, and stripped shingles from a neighboring house. A TV aerial was toppled, and clothes were blown off clothes lines. (The Weather Channel)

July 17, 1987
Slow moving thunderstorms caused flooding on the Guadalupe River in Texas resulting in tragic loss of life. A bus and van leaving a summer youth camp stalled near the rapidly rising river, just west of the town of Comfort, and a powerful surge of water swept away 43 persons, mostly teenagers. Ten drowned in the floodwaters. Most of the others were rescued from tree tops by helicopter. (The National Weather Summary)

July 17, 1988
A dozen cities in the eastern U.S., and six others in California, reported record high temperatures for the date. Downtown San Francisco, CA, with a high of 103 degrees, obliterated their previous record high of 82 degrees. Philadelphia, PA, reported a record five straight days of 100 degree heat, and Baltimore, MD, reported a record eight days of 100 degree weather for the year. Afternoon and evening thunderstorms produced severe weather along the Middle Atlantic Coast, and over southern New England. (The National Weather Summary)

July 17, 1989
Thunderstorms produced severe weather from South Dakota to Lousiana, with 126 reports of large hail and damaging winds during the day and night. Thunderstorms in Nebraska produced hail four inches in diameter in Frontier County, and at North Platte, causing millions of dollars damage to crops in Frontier County. Thunderstorms in Oklahoma produced wind gusts to 90 mph at Peggs. Tahlequah OK was drenched with 5.25 inches of rain. (Storm Data)

Data courtesy of WeatherForYou