National Weather Service United States Department of Commerce
June 15, 2016
Microburst near Hamilton, Ohio


On the afternoon of June 15, 2016, storms developed in a very unstable airmass across parts of Indiana and western Kentucky. As the storms moved east into an environment with temperatures in the mid/upper 80s and dewpoints in the low/mid 70s, they merged into a broken/bowing line across parts of southeast Indiana, southwest Ohio, and northern Kentucky. These storms produced widespread winds of 50-60 MPH. Within the broken line, a microburst caused significant tree damage just south of Hamilton, Ohio, with estimated wind speeds of 80-90 MPH.


NOUS41 KILN 162110

Public Information Statement
National Weather Service Wilmington OH
510 PM EDT THU JUN 16 2016

...A microburst with straight line wind damage has been
confirmed near Hamilton in Butler County Ohio...

Location...Hamilton in Butler County Ohio
Date...June 15 2016
Estimated Time...6:52 PM
Estimated Maximum Wind Speed...90 MPH

* The information in this statement is preliminary and subject to
change pending final review of the event(s) and publication in
NWS Storm Data.

A damage survey conducted by the National Weather Service in
collaboration with Butler County Emergency Management determined
that thunderstorm wind damage which occurred during the evening of
Wednesday 15 June 2016 was caused by a microburst with straight line

The first damage was observed near the corner of N Riverview Drive and
Andrew Avenue. One single story home had an awning blown off, and
another single story home had shingles blown off. Both the awning
and shingles had been blown toward the east.

Additional damage was observed to the southeast of the initial
damage and was located along Pleasant Avenue. Much of the damage
was from trees. Several hardwood trees were snapped and one
hardwood tree was also uprooted. A two story home also had some
shingles removed from its roof.

Damage continued to the southeast, affecting Minor Avenue, Benninghofen
Avenue and Hooven Avenue. Several more hardwood trees experienced
damage. The most significant tree damage was observed from a large
uprooted tree on Hooven Avenue. This tree, like others that were
observed, pointed toward the east-southeast. Some structural
damage was also noted. Several houses had shingles and siding
blown off. A fence was also knocked down in the backyard of one
house. Damage was observed on the west-facing sides of the homes.
Maximum winds associated with the microburst occurred within this
area, and are estimated to be up to 90 mph.

The southeast extent of the damage occurred near Shuster Park,
where winds had broken off 8 to 12 inch diameter limbs from trees.
No additional damage was observed east-southeast of Shuster Park.

The National Weather Service extends thanks to Butler County
Emergency Management and the affected homeowners for their
assistance with this storm damage survey.

This information can also be found on our website at

For reference...
A microburst is a convective downdraft with an affected outflow
area of less than 2 1/2 miles wide and peak winds lasting less
than 5 minutes. Microbursts may induce dangerous horizontal and
vertical wind shears...which can adversely affect aircraft
performance and cause property damage. Straight-line winds are
generally any wind that is not associated with rotation...used
mainly to differentiate them from tornadic winds.




These radar images show the enhancement of wind associated with the microburst that developed near Hamilton, Ohio around 6:52 PM on June 15th. The top images show storm-relative motion (SRM) as seen from TDWR Cincinnati (TCVG). The second tier of images show the velocity (with local enhancement south of Hamilton) as seen from TCVG (bright green = strong inbound coming towards radar (to the south)). The bottom row shows the reflectivity as seen from TCVG.


TCVG 0.1° SRM - 6:50PM TCVG 0.1° SRM - 6:51PM TCVG 0.1° SRM - 6:52PM TCVG 0.1° SRM - 6:53PM TCVG 0.1° SRM - 6:54PM
TCVG 0.1° V -- 6:50 PM TCVG 0.1° V -- 6:51 PM TCVG 0.1° V -- 6:52 PM TCVG 0.1° V -- 6:53 PM TCVG 0.1° V -- 6:54 PM
TCVG 0.1° Z -- 6:50 PM TCVG 0.1° Z -- 6:51 PM TCVG 0.1° Z -- 6:52 PM TCVG 0.1° Z -- 6:53 PM TCVG 0.1° Z -- 6:54 PM


These select pictures were taken by NWS Wilmington, Ohio employees during a storm survey conducted on June 16, 2016: