...1843... Navigation was finally reopened at Burlington, Vermont, ending a long winter. This was the second latest opening of navigation on record for Burlington.

...1898... The low temperature fell to 33 degrees at Newport, Rhode Island, setting the record low temp for the date. It was later tied in 1909 and 1987.

...1899... A tornado struck Kirksville MO killing 34 persons and destroying 300 buildings.

...1912... One of the worst tornado outbreaks in Oklahoma's history occurred. 16 tornadoes rated F2 or greater touched down in the state with 6 of them rated F4. 29 people were killed.

...1915... The temperature at Washington, D.C. hit 92 degrees, the highest ever in April. New York city hit 92 degrees as well.  At Newport, Rhode Island the temperature hit 81 degrees, breaking the previous record of 67 degrees set in 1913.

...1931... The temperature at Pahala, located on the main island of Hawaii, soared to 100 degrees to establish a state record.

...1942... A destructive tornado swept across Rogers County and Mayes County in Oklahoma. The tornado struck the town of Pryor killing 52 persons and causing two million dollars damage.

...1947... A wind gust of 47 miles per hour was recorded at Newport, Rhode Island, breaking the previous record of 42 miles per hour set in 1932.

...1966... Two weather records were broken on this day at Newport, Rhode Island. The dew point plummeted to 6 degrees, breaking the record of 22 degrees set in 1958 and the barometric pressure peaked at 30.62 inches, breaking the previous record of 30.52 also set in 1958.

...1987... Forty-two cities in the western and south central U.S. reported record high temperatures for the date. The afternoon high of 87 degrees at Olympia WA was an April record, and highs of 92 degrees at Boise ID, 95 degrees at Monroe LA, and 96 degrees at Sacramento CA tied April records. More than 300 daily temperature records fell by the wayside during a two week long heat wave across thirty-four states in the southern and western U.S. Thirteen cities established records for the month of April.

...1988... Observers at the Mount Washington observatory in New Hampshire reported over 7 feet of snowfall in a 10 day period, bringing their total for April to 89.9 inches. This set a new record for April snowfall on the mountain breaking the old standard of 89.3 inches set in 1975. Records have been kept on the summit since December of 1932.

...1989... Thunderstorms produced severe weather from the Lower and Middle Mississippi Valley to Virginia and the Carolinas. Hail up to four and a half inches in diameter caused five million dollars damage around Omaha NE. Thunderstorms spawned eleven tornadoes, and there were 160 other reports of large hail and damaging winds.

...1990... Thunderstorms produced severe weather in eastern Texas and the Lower Mississippi Valley. Severe thunderstorms spawned thirteen tornadoes in Texas and twelve in Louisiana. A tornado southwest of Coolidge TX injured eight persons and caused more than five million dollars damage. There were also eighty-five reports of large hail and damaging winds, with baseball size hail reported at Mexia TX and Shreveport LA. Forty-three cities in the eastern U.S. reported record high temperatures for the date. Records highs included 94 degrees at Charleston WV, 95 degrees at Baltimore MD and 96 degrees at Richmond VA.

...1993... At Newport, Rhode Island the wind chill fell to 23 degrees, breaking the previous record of 24 degrees set in 1987.

...2003... Hail the size of golf balls fell at Key West, Florida -- the largest hail ever recorded at the location and an unusual occurrence for the area. It was the only the 11th time hail had fallen at Key West since records began in 1871.

...2011... An estimated 305 tornados between the 27th and 28th sets a record for the largest outbreak ever recorded, including two EF-5s, four EF-4s and 21 EF-3s. Arkansas through Mississippi, Alabama, Georgia, southern Tennessee, Virginia to Pennsylvania and New York were all affected. An estimated 300 died including 210 in Alabama alone. This brought the April total past 600, the most in any month in recorded US weather history.