Draft:2019 Dayton tornado
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 Low-end EF4 damage to several apartment buildings in Dayton | |
| Meteorological history | |
|---|---|
| Formed | May 27, 2024, 10:41 p.m. EDT (UTC−04:00) |
| Dissipated | May 27, 2024, 11:13 pm. EDT (UTC−04:00) |
| Duration | 32 minutes |
| EF4 tornado | |
| on the Enhanced Fujita scale | |
| Highest winds | 170 mph (270 km/h) |
| Overall effects | |
| Fatalities | 1 indirect |
| Injuries | 166 |
| Damage | $500 million (2019 USD) |
| Areas affected | Montgomery County, Ohio, especially Dayton and surrounding suburbs |
Part of the Tornado outbreak sequence of May 2019 and Tornadoes of 2019 | |
On the night of May 27, 2019, a large and destructive tornado struck Dayton as well as the surrounding suburbs of Brookville, Trotwood, Shiloh and Riverside, injuring 166 people, and indirectly killing one person. Part of the Tornado outbreak sequence of May 2019, this was the first of two EF4 tornadoes to occur in this event, and the first such tornado in Ohio since an EF4 tornado struck Millbury on the night of June 5, 2010. Along the tornado's 18.17-mile (29.24 km) path through Montgomery County, the tornado was on the ground for 32 minutes, reaching a peak width of 1,050 yards (960 m) at times, and caused $500 million (2019 USD) in damage.
Meteorological synopsis
[edit]
On the morning of May 27, the Storm Prediction Center issued an enhanced risk of severe weather for eastern Iowa, Illinois, Indiana, southwestern Michigan, and western Ohio for significant tornadoes, large hail, and damaging wind gusts. Much of Ohio was initially excluded from the tornado risk, but was eventually included as the severe weather outlook was updated in the afternoon. As a shortwave trough moved northeast across the area, low-to-mid-level westerlies were expected to interact with a low-pressure area associated with the trough, increasing the amount of moisture and atmospheric instability as clouds from a decaying mesoscale convective system dissipated, resulting in increased mid-level convective available potential energy (CAPE) values of 2,500 to 3,000 J/kg across the region, indicating strong instability.[1] Additionally, 40-50 kts of wind shear was present within the region, with the strongest winds being present 1–2 km (0.62–1.24 mi) above the ground.[2] These conditions being mixed with a warm front associated with the low-pressure area led to an environment conducive for tornadogenesis from eastern Iowa to western Ohio, which was included in the afternoon's outlook update after they had found the potential for a supercell or two to develop and be capable of producing tornadoes with the lower-level jet stream winds expected to increase that night, allowing for low-level mesocyclone development.[3]
At 8:20 p.m. EDT, the SPC issued a tornado watch for western and central Ohio, with a 60% chance of a tornado occurring within the watch area, along with a 30% likelihood of a strong tornado. Multiple supercells had developed and moved across Illinois and Indiana, which produced several tornadoes as they moved east, and were expected to continue doing so as they entered the state and approached the lower-level jet stream winds in conditions favorable for further tornado activity.[4][5]
Tornado summary
[edit]Formation and Brookville
[edit]The supercell that produced the Dayton tornado was first tornado-warned in the state at 10:31 p.m. EDT in Preble County.[6] Ten minutes after the warning was issued, the tornado touched down west of Brookville in Montgomery County, initially causing minor EF0 damage to trees along northern Sulphur Springs Road. The tornado quickly intensified to high-end EF2 strength as it entered the city, where numerous homes had their roofs torn off or sustained severe roof damage, and some had a few exterior walls collapse as the tornado moved through. Significant damage occurred to a wastewater treatment plant and to Brookville High School, which had large portions of its roof removed. Additionally, the tornado damaged numerous trees and power lines, and completely destroyed a small automotive business.[7][8][9]
Trotwood
[edit]Shiloh
[edit]Dayton
[edit]Riverside and dissipation
[edit]Aftermath
[edit]See also
[edit]- List of F4 and EF4 tornadoes (2010–2019)
- List of tornadoes in the tornado outbreak sequence of May 2019
- List of United States tornado emergencies
References
[edit]- ^ US Department of Commerce, NOAA. "Severe Weather Topics: CAPE". www.weather.gov. Retrieved 2024-07-29.
- ^ "Storm Prediction Center May 27, 2019 1300 UTC Day 1 Convective Outlook". www.spc.noaa.gov. Retrieved 2024-07-29.
- ^ "Storm Prediction Center May 27, 2019 2000 UTC Day 1 Convective Outlook". www.spc.noaa.gov. Retrieved 2024-07-29.
- ^ "Storm Prediction Center Tornado Watch 266". www.spc.noaa.gov. Retrieved 2024-07-29.
- ^ "Storm Prediction Center May 28, 2019 0100 UTC Day 1 Convective Outlook". www.spc.noaa.gov. Retrieved 2024-07-29.
- ^ Hatzos, Andrew (May 27, 2019). "Tornado Warning for Northeastern Preble County and Northwestern Montgomery County, Ohio". VTEC Browser. Wilmington, Ohio: Iowa State University. Retrieved July 29, 2024.
- ^ Ohio Event Report: EF4 Tornado. National Weather Service (Report). National Center for Environmental Information. Retrieved July 28, 2024.
- ^ US Department of Commerce, NOAA. "Tornado Through Brookville, Trotwood, Dayton and Riverside in Montgomery County, OH - May 27, 2019". www.weather.gov. Retrieved 2024-07-29.
- ^ Hulsey, Lynn (July 29, 2024). "Officials confirm tornado hit Brookville, badly damaging homes, a business and wastewater treatment plant". Dayton Daily News. Dayton, Ohio: Cox Media Group. Retrieved May 30, 2019.