Severe Storms of August 16 and 17, 2025

Storm Reports

Preliminary Local Storm Report
National Weather Service Indianapolis IN


..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0255 PM     Tstm Wnd Dmg     3 SE Spring Lake        39.74N 85.81W
08/16/2025                   Hancock            IN   Public

            Picture of a tree snapped about 5 feet off
            the ground. Time estimated from radar.

0447 PM     Tstm Wnd Dmg     4 ESE Covington         40.13N 87.33W
08/16/2025                   Fountain           IN   Trained Spotter

            Thunderstorm winds downed power poles on
            West Public Service Road and blew metal
            roofing into fields on both sides of US
            Highway 136 1/8 to 1/4 mile west of
            Interstate 74 overpass. Time estimated from
            radar.
0935 PM     Tstm Wnd Dmg     3 NW Westfield          40.07N 86.17W
08/16/2025                   Hamilton           IN   Public

            Home siding damage in Osborne Trails
            subdivision at 193rd and Spring Mill Roads.
			
0935 PM     Tstm Wnd Gst     1 NNW Westfield         40.06N 86.14W
08/16/2025  M59 MPH          Hamilton           IN   Mesonet			
			
0951 PM     Tstm Wnd Dmg     2 NE Carmel             39.99N 86.09W
08/16/2025                   Hamilton           IN   Public

            Numerous trees down in a defined area of
            Westfield and Carmel along with two reports
            of trees on houses.			

1000 PM     Tstm Wnd Gst     2 N Castleton           39.93N 86.05W
08/16/2025  M62 MPH          Hamilton           IN   AWOS

            AWOS station KUMP 1 N Castleton.

1005 PM     Tstm Wnd Dmg     Chesterfield            40.11N 85.59W
08/16/2025                   Madison            IN   Emergency Mngr

            A few trees and power pole snapped. Time
            estimated from radar.

1015 PM     Tstm Wnd Gst     1 WNW Chesterfield      40.12N 85.62W
08/16/2025  M56 MPH          Madison            IN   AWOS

            AWOS station KAID Anderson Municipal Apt.

1022 PM     Tstm Wnd Dmg     3 SSE Zionsville        39.91N 86.25W
08/16/2025                   Marion             IN   Public

            Several trees downed.

1217 AM     Tstm Wnd Dmg     2 SSW Monroe Reservoir  39.03N 86.45W
08/17/2025                   Monroe             IN   Newspaper

            *** 1 INJ ***
            One camper at Hardin Ridge campsite was
            injured when a tree fell on her tent.
            Numerous trees downed nearby.

1219 AM     Tstm Wnd Dmg     1 E Fairfax State Recre 39.02N 86.48W
08/17/2025                   Monroe             IN   Newspaper

            Several areas of storm damage near the
            Fourwinds marina with trees down and damage
            to docks and walkways. There was some damage
            to boats on the lake as well.

1234 AM     Tstm Wnd Dmg     3 ENE Oolitic           38.91N 86.47W
08/17/2025                   Lawrence           IN   Public

            Multiple trees downed.


&&

$$

Radar

Selected images from the event. A loop is available.

Radar/Velocity image at 9:45 PM EDT. Velocity showed over 60kt inbound.	Radar/Velocity Image at 10:20 PM EDT	Radar/Velocity Image at 12:22 AM EDT	Radar/Velocity Image at 12:32 AM EDT Radar showed near 60kt outbound.

Environment

Thunderstorms developed strong outflow which allowed them to move south into unstable air.

Figure 1: Zoomed Surface Map at 11 PM EDT	Figure 2: Mixed Layer CAPE at 11 PM EDT	Figure 3: Downdraft CAPE at 11 PM EDT