Severe Thunderstorm Warning 285, NWS Indianapolis, IN

154 
WWUS53 KIND 111948
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
348 PM EDT Tue Aug 11 2026

INC119-111958-
/O.CAN.KIND.SV.W.0285.000000T0000Z-260811T2015Z/
Owen IN-
348 PM EDT Tue Aug 11 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OWEN COUNTY IS
CANCELLED...

The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 500 PM EDT for
south central and central Indiana.

LAT...LON 3931 8663 3943 8647 3943 8616 3923 8621
TIME...MOT...LOC 1948Z 283DEG 30KT 3933 8643 

$$

INC013-081-105-109-112015-
/O.CON.KIND.SV.W.0285.000000T0000Z-260811T2015Z/
Monroe IN-Morgan IN-Brown IN-Johnson IN-
348 PM EDT Tue Aug 11 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHEASTERN MONROE...SOUTHEASTERN MORGAN...NORTHWESTERN BROWN
AND SOUTHWESTERN JOHNSON COUNTIES...

At 348 PM EDT, a severe thunderstorm was located near Martinsville,
or 12 miles northeast of Bloomington, moving east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Martinsville, Trafalgar, Morgantown, Mahalasville, Spearsville,
Helmsburg, and Beanblossom.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3931 8663 3943 8647 3943 8616 3923 8621
TIME...MOT...LOC 1948Z 283DEG 30KT 3933 8643 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ME

Area Forecast Discussion
National Weather Service Indianapolis IN
233 PM EDT Tue Aug 11 2026

.KEY MESSAGES...

- Thunderstorms this afternoon and early evening. Some Severe.

- Flood Watch through Wednesday across much of central Indiana,
  Heat Advisory across the southwest

- Additional storms daily through the rest of the week, flooding
  will be the main threat

&&

.DISCUSSION (This evening through Tuesday)...
Issued at 233 PM EDT Tue Aug 11 2026

Surface analysis this afternoon continues to show a weak trough of
low pressure stretching from northern IL across northern Indiana
into OH. This area remains the focus for convective development.
GOES19 shows a large thunderstorm cluster over northern Indiana,
progressing to the southeast. Thunderstorms were found stretching
from a LAF to Noblesville-Anderson-Muncie areas, and was sagging
southward. Best instability across area remained southwest of the
storms where SPC CAPE showed values over 4500 J/KG. Latest ACARS
soundings show deep CAPE available. Aloft water vapor shows a short
wave within the NW flow aloft over eastern IL triggering our
convective cluster as the NW flow continue to stream from MT and WY
to Indiana.

This afternoon and tonight...

Convection across the northern parts of the forecast area is
expected to continue for the next several hours as the upper wave
continues to progress east. Thunderstorms will try to sag southward
somewhat, where the better instability will be located. Thus will
continue to keep high pops in place in this along and south of the
storms through the afternoon into the evening. Additional TSRA due
to daytime heating will be possible across southwestern central
Indiana and lower pops will still be needed there.

HRRR shows this wave exiting by early evening, and a worked over
atmosphere should allow storms to end leading to a mainly dry
evening and overnight period. Some fog will be possible near LAF due
to the high dew points remaining across the area along with the
lingering surface boundary.  Look for overnight lows in the lower
70s and the highest pops during the evening hours.

Wednesday...

The persistent NW flow aloft is expected to remain in place on
Wednesday, perhaps becoming a bit more northwesterly as yet another
short wave is expected to pass across Central Indiana within the
flow. Again the very warm and humid air mass will be in place
allowing for plenty of moisture and pwats once again are near values
1.81 inches. Again ample CAPE will be in play also. Thus high pops
will once again be used on Wednesday as this wave will pass, mainly
in the afternoon. With a good amount of daytime heating available
through the morning hours, high temperatures should again reach the
upper 80s to around 90.

Wednesday Night through Thursday Night...

Through this time period there is very little change in the overall
weather pattern. The same NW flow aloft is expected to be in place
with several embedded waves within that flow poised to pass during
this time period. The very warm, humid and unstable airmass will
also remain. All of this will add up to continued chances for
showers and thunderstorms, mainly capable of producing very heavy
rain and damaging wings through the period. Continued pops will be
used through the period.

Friday through Sunday Night....

More hot and humid weather is expected through the weekend along
with daily chances for showers and thunderstorms. Models suggest
ridging aloft over the plains will be building across Central
Indiana through the weekend. A few ridge riding waves within a ring
of fire type pattern will be capable of producing occasional showers
and storms. Further support will come from the lower levels. Here, a
frontal boundary will be lingering across Central Indiana on Friday
before pushing north as a warm front on Saturday ahead of low
pressure over the plains. The low will push east of Indiana on
Sunday, likely dragging a cold front across Central Indiana.
Forecast soundings through Sunday show plentiful moisture available
through the column. All of this will again necessitate pops through
the weekend. The warm air mass will result in high temperatures in
the upper 80s to around 90.

Monday and Tuesday...

In the wake of the front on Monday, dry air and subsidence is shown
to arrive as high pressure from the Great Lakes builds across
Central Indiana. Forecast soundings show a dry column and for the
first time in what seems like a long time show zero CAPE. Aloft,
ridging is expected to return over the Rockies resulting in NW flow
streaming across the plains into Indiana. At the moment it appears
that little to no forcing will be available, this we should able to
use a dry forecast at that time given the the expected surface high
pressure.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 121 PM EDT Tue Aug 11 2026

Impacts:

- TSRA expected at LAF and IND this afternoon
- Mainly VFR conditions, except MVFR and brief IFR in storms.

Discussion:

A Thunderstorm cluster stretching from near LAF to MIE will continue
to push east and sag southward through the next several hours. Have
included TEMPO groups for thunderstorms at LAF and IND to account
for the best window of storms passing. Storms will produce MVFR to
IFR conditions as they pass across TAF sites. The flow aloft should
keep the showers and storms remaining north of HUF and BMG, but an
isolated shower cannot be ruled out as the wave to the north passes
along with the possibility of diurnal heating related showers and
storms.

Convection is expected to diminish this afternoon and evening as the
upper wave exits and some cooling and stability reigns in the
somewhat worked over air mass. Low dewpoint depressions may lead to
overnight fog formation, particularly at LAF where rain will have
occurred.

Models suggest another upper wave arriving for Wednesday afternoon,
once again passing along the similar corridor as today. Have used a
VCTS mention for IND after 18Z as timing uncertainty remains.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
Flood Watch through Wednesday evening for INZ021-028>031-035>049-
054>057-063>065-072.

Heat Advisory until 9 PM EDT this evening for INZ060-061-067>070.

&&

AVIATION...Puma
DISCUSSION...Puma

Hazardous Weather Outlook
National Weather Service Indianapolis IN
255 PM EDT Tue Aug 11 2026

INZ021-028>031-035>049-051>057-062>065-071-072-121900-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-
Rush-Monroe-Brown-Bartholomew-Decatur-Jackson-Jennings-
255 PM EDT Tue Aug 11 2026

This hazardous weather outlook is for central Indiana.

.DAY ONE...Through Tonight.

Thunderstorms, some severe, are likely this afternoon and early
evening with the potential for damaging winds along with localized
flash flooding. Additional storms possible through the night with
flooding becoming the main threat.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Thunderstorms will be possible at times through the week, with
potential for multiple rounds of severe storms through at least
Wednesday night. Damaging winds and heavy rainfall will be the
primary threats.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to remain vigilant this week as multiple rounds
of severe storms will be possible.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

INZ060-061-067>070-121900-
Sullivan-Greene-Knox-Daviess-Martin-Lawrence-
255 PM EDT Tue Aug 11 2026

This hazardous weather outlook is for central Indiana.

.DAY ONE...Through Tonight.

Thunderstorms, some severe, are likely this afternoon and early
evening with the potential for damaging winds along with localized
flash flooding. Additional storms possible through the night with
flooding becoming the main threat.

Heat index values up to 105 today may cause heat related illnesses.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Thunderstorms will be possible at times through the week, with
potential for multiple rounds of severe storms through at least
Wednesday night. Damaging winds and heavy rainfall will be the
primary threats.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to monitor the severe weather threat today
and report any damage.

&&

More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind

Preliminary Local Storm Report
National Weather Service Indianapolis IN
243 PM EDT Tue Aug 11 2026

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

0231 PM     Tstm Wnd Dmg     Cumberland              39.79N 85.95W
08/11/2026                   Marion             IN   Public

&&

BH

Preliminary Local Storm Report
National Weather Service Indianapolis IN
246 PM EDT Tue Aug 11 2026

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

0222 PM     Tstm Wnd Dmg     1 NW Speedway           39.80N 86.26W
08/11/2026                   Marion             IN   Public

            Time estimated from radar. Tree appears to
            have some rot in its base where it snapped
            off. Located near Meadowood Dr & Maplewood
            Dr.

&&

BH

Preliminary Local Storm Report
National Weather Service Indianapolis IN
249 PM EDT Tue Aug 11 2026

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

0225 PM     Tstm Wnd Dmg     Morristown              39.67N 85.70W
08/11/2026                   Shelby             IN   Law Enforcement

            Tree limbs were blown down by thunderstorm
            winds. Power outage south of US 52. Time
            adjusted from radar.

&&

BH

Preliminary Local Storm Report
National Weather Service Indianapolis IN
253 PM EDT Tue Aug 11 2026

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

0233 PM     Tstm Wnd Dmg     Rushville               39.62N 85.44W
08/11/2026                   Rush               IN   Emergency Mngr

            Tree blown down into a house in the 1000
            block of Rushville. Other reports have been
            received of trees and utility lines down
            across the county. Time adjusted based on
            radar.

&&

BH

Preliminary Local Storm Report
National Weather Service Indianapolis IN
259 PM EDT Tue Aug 11 2026

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

0246 PM     Rain             1 S Broad Ripple        39.86N 86.13W
08/11/2026  M0.90 Inch       Marion             IN   Public

            Rainfall in about 45 minutes.

&&

BH

Preliminary Local Storm Report
National Weather Service Indianapolis IN
301 PM EDT Tue Aug 11 2026

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

0259 PM     Hail             Greensburg              39.34N 85.48W
08/11/2026  E0.25 Inch       Decatur            IN   Fire Dept/Rescue

            30-40mph winds.

&&

BH