Timothy P. Marshall

Tim Marshall
Marshall surveying damage from the 2013 Moore tornado
Born	(1956-10-17) October 17, 1956 (age 60) Evergreen Park, Illinois, USA
Fields	Structural engineering and meteorology
Institutions	Haag Engineering
Alma mater	Northern Illinois University (B.S., 1978) Texas Tech University (M.S., 1980, 1983)
Thesis	The Utilization of Load and Resistance Statistics in a Wind Speed Assessment (1983)
Known for	Tornado damage analysis, wind and hail engineering
Influences	Ted Fujita

Timothy Patrick Marshall (born October 17, 1956) is an American structural and forensic engineer as well as meteorologist, concentrating on damage analysis, particularly that from wind and other weather phenomena. He is also a pioneering storm chaser and was editor of Storm Track magazine.

Marshall was born to Charles and Catherine Marshall in Evergreen Park near Chicago, Illinois, in 1956 and raised in Oak Lawn, then in Oak Brook. Oak Lawn was heavily damaged during the historic 1967 Oak Lawn tornado outbreak of April 21, 1967, when he was 10 years old. The F4 "Oak Lawn tornado" touched down about 4 mi (6.4 km) west of his home and killed 33 in town, including some of his classmates. This experience served to strengthen his interest in meteorology, and he focused his studies on tornadoes.

Marshall attended Northern Illinois University (NIU) in DeKalb, attaining a B.S. degree in geography with a concentration in meteorology in 1978. As an undergraduate student there, he and classmates surveyed some tornado damage paths of the 1974 Super Outbreak during an informal trip to the National Climatic Data Center (NCDC) to collect severe weather data. Later, he and fellow students visited the National Severe Storms Forecast Center (NSSFC) and obtained a large collection of materials the library was dumping, which formed the basis of his own library.