A storm blanketed Worcester, MA, with 7.5 inches of snow, a record snowfall total for so early in the season for that location.

A tropical wave, later to become Tropical Storm Isabel, struck Puerto Rico. As much as 24 inches of rain fell in 24 hours, and the severe flooding and numerous landslides resulting from the rain claimed about 180 lives.

A second early season snowstorm produced eleven inches at Wilkes Barre PA and 26 inches at Auburn NY. All the mountains in the northeastern U.S. were whitened with snow.

Thunderstorms developing ahead of a cold front produced large hail in southeastern Wyoming during the afternoon, with tennis ball size hail reported at Cheyenne. Strong winds ushering the cold air into the north central U.S. gusted to 59 mph at Lander WY.

A record early season snowstorm struck the Central High Plains Region. The storm left up to nineteen inches of snow along the Colorado Front Range, and as much as a foot of snow in the High Plains Region.

Thunderstorms produced high winds and locally heavy rain in the southwestern U.S. One thunderstorm in west Texas produced wind gusts to 86 mph at Dell City completely destroying an airport hangar.

Tropical Storm Emily, which formed in the Carribean the previous afternoon, caused considerable damage to the banana industry of Saint Vincent in the Windward Islands.

A storm produced 28 inches of snow at Colorado Springs CO.

Showers and thunderstorms produced locally heavy rains in central Wyoming, and snow in some of the higher elevations. Casper WY reported 1.75 inches of rain in 24 hours, and a thunderstorm north of the Wild Horse Reservoir produced 1.90 inches of rain in just forty minutes.

Afternoon and evening thunderstorms produced severe weather in Oklahoma and west Texas. In Oklahoma, a thunderstorm at Seiling produced three inches of rain in one hour, golf ball size hail, and wind gusts to 60 mph which collapsed a tent at the state fair injuring nine persons.

Thunderstorms can generate gusts of wind that can develop additional thunderstorms 100 miles away.

The Empire State Building has been struck by lightning a dozen time in a single storm.

A government study showed that one small thunderstorm held more than 33 million gallons of water.

Supercells are the most dangerous types of thunder storms.

An exceedingly great storm struck eastern New England causing extensive coastal damage from Massachusetts to Maine, and the highest tide in 47 years.