National Weather Service United States Department of Commerce

Heavy Rain in the Southern Appalachians; Heat Continues in the West; Monitoring Tropical Storm Erin

Heavy to excessive rain falling over the southern Appalachians may bring areas of flooding into Wednesday. Hot temperatures are in place through Wednesday across parts of the western U.S. and New England. Tropical Storm Erin is forecast to become a Hurricane by late this week as it moves westward across the central Atlantic Ocean. Monitor forecasts for any Puerto Rico or U.S. East Coast impacts. Read More >

April 3, 1974 meteorology

 

Map of the entire outbreak

Satellite pictures at 11:11am EDT, 1:54pm EDT, and 5pm EDT.

Surface weather map at 8am EDT, 2pm EDT, and 8pm EDT

Jet streams

Weather maps:  250mb winds, 500mb winds, 500mb heights, 700mb relative humidity, 850mb winds, surface temperatures, surface relative humidity, sea level pressure.

General Outbreak Information

 

See an 11"x17" version of our commemorative poster (3.7Mb):
Super Outbreak Poster

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