1920 Palm Sunday tornado outbreak
| Type | Tornado outbreak |
|---|---|
| Duration | March 28, 1920 |
| Tornadoes confirmed | ≥ 37 |
| Max rating1 | F4 tornado |
| Duration of tornado outbreak2 | ~9 hours |
| Damage | Unknown |
| Casualties | 207–380+ fatalities, 1215+ injuries |
| Areas affected | Midwestern and Southern United States |
|
1Most severe tornado damage; see Fujita scale 2Time from first tornado to last tornado |
|
1Most severe tornado damage; see Fujita scale
The Palm Sunday tornado outbreak of 1920 was an outbreak of at least 37 tornadoes, 31 of which were significant, across the Midwest and Deep South states on March 28, 1920. The tornadoes left more than 380 dead and at least 1,215 injured. Many communities and farmers alike were caught off-guard as the storms moved to the northeast at speeds that reached over 60 miles per hour (97 km/h). Most of the fatalities occurred in Georgia (201+), Indiana (56), and Ohio (55), while the other states had lesser totals. Little is known about many of the specific tornadoes that occurred, and the list below is only partial.
Severe thunderstorms began developing in Missouri during the early morning hours. The storms moved quickly to the northeast towards Chicago, Illinois. The first tornado injured five people 35 miles (56 km) southeast of Springfield, Missouri, in Douglas County. This first tornado was a harbinger of things to come as the morning went on and the atmosphere began to destabilize, due to the abundance of sunshine that preceded the cold front in the warm sector, which covered the lower Great Lakes region extending southward well past the Ohio River Valley.
According to meteorologist and weather historian Charles Merlin Umpenhour, climatic conditions were favorable on Palm Sunday 1920 for all the atmospheric ingredients to come together needed to create the classic setup needed for long-track tornadoes. However, forecasting, communications technology, and public awareness about Severe Weather was nearly nonexistent in 1920 and would not begin for another 33 years, when the U.S. Weather Bureau would implement its public Watch (the word ‘forecast’ was used until 1966) and Warning program in 1953.
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