August 11 Weather History

...1860... Mobile, Alabama had the first of two hurricanes that year. During this first hurricane, tides were only 18 inches below the record of 18.56 feet.

...1898... 2.14 inches of rain fell at Newport, Rhode Island, breaking the previous record of .26 inches set the year before in 1897.

...1940... At Newport, Rhode Island, the barometric pressure peaked at 30.45 inches of mercury, setting the record high for the date. A major hurricane struck Savannah GA and Charleston SC causing the worst inland flooding since 1607.

...1944... The temperature at Newport, Rhode Island peaked at 94 degrees, breaking the old record of 93 degrees set in 1900 and 1949.  The temperature at Burlington VT soared to an all-time record high of 101 degrees.   The "Dog Days" officially come to an end on this date, having begun the third day in July. Superstition has it that dogs tend to become mad during that time of the year.

...1972... At Newport, Rhode Island the low temperature fell to 53 degrees, breaking the old record of 54 degrees that was set back in 1894.

...1980... Clouds and moisture from Hurricane Allen provided a brief break from the torrid Texas heat wave, with daily highs mostly in the 70s to lower 90s.

...1984... A record high temperature of 96 degrees at Miami, Florida preceded an afternoon thunderstorm which produced a record low temperature of 70 degrees for the same date.

...1987... An early evening thunderstorm in Wyoming produced hail up to two inches in diameter from Alva to Hulett. Snow plows had to be used to clear Highway 24 south of Hulett, where hail formed drifts two feet deep.

...1988... At Newport, Rhode Island the dew point was a sticky 77 degrees, setting the record high for the date; it was later tied in 2016 and the heat index peaked at 103 degrees, breaking the record of 98 degrees that was set in 2005 and 2009.  Moisture from what remained of Tropical Storm Beryl resulted in torrential rains across eastern Texas. Twelve and a half inches of rain deluged Enterprise TX, which was more than the amount received there during the previous eight months. Philadelphia PA reported a record forty-four days of 90 degree weather for the year. Baltimore MD and Newark NJ reported a record fourteen straight days of 90 degree heat.

...1989... One of the most severe convective outbreaks of record came to a climax in southern California after four days. Thunderstorms deluged Benton CA with six inches of rain two days in a row, and the flooding which resulted caused more than a million dollars damage to homes and highways. Thunderstorms around Yellowstone Park WY produced four inches of rain in twenty minutes resulting in fifteen mudslides. Thunderstorms over Long Island NY drenched Suffolk County with 8 to 10 inches of rain. Twenty-three cities in the southeastern U.S. reported record low temperatures for the date. It was, for some cities, the fourth straight morning of record cold temperatures.

...1993... A severe thunderstorm spawned a high elevation strong (F3) tornado in the Ashley National Forest, 20 miles north of Roosevelt, Utah. The tornado touched down 3 times along a 17 mile path, and was up to 1/2 mile wide. 1000 acres of trees were uprooted or snapped. The highest elevation damage was found at 10,800 feet.

...1999... An F2 tornado moved through downtown Salt Lake City, Utah, killing one person, injuring 100, and doing 150 million dollars in damages. This was the first killer tornado on record for the state.

...2017... At Newport, Rhode Island the low relative humidty was a dry 32%, breaking the old recvord of 34% set in 1974, 2006 and 2007.

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