Severe Thunderstorm Warning 328, NWS Indianapolis, IN

Area Forecast Discussion
National Weather Service Indianapolis IN
333 PM EDT Wed Aug 19 2026

.KEY MESSAGES...

- Flood Watch in effect through 8AM Thursday across the northern
half of central IN with localized flash flooding possible

- Scattered to numerous showers and storms are expected this
afternoon into tonight, isolated severe storms are possible

- Generally drier late this week through early next week, but there
is a chance for showers and storms late Friday into Saturday

&&

.DISCUSSION (This evening through Wednesday)...
Issued at 332 PM EDT Wed Aug 19 2026

As of this afternoon, scattered thunderstorms have popped up across
north-central Indiana. There is a marginal severe threat this
afternoon through the evening with isolated damaging winds
possible and some hail as well. With how saturated the ground is,
trees could more easily be knocked over.

Flooding continues to be the main threat for the forecast area
unfortunately. Some of these afternoon storms are already
producing rain rate of over 2 in/hr, across northern portion of
the forecast area. A flood watch is in effect through the morning.
Rivers and creeks are likely to rise again from this rain. Where
exact impacts occur will depend on which river basin the highest
amounts of rainfall fall. Models have been largely highlighting
that some of these highest amounts will fall over the White River
basin, which could lead to river points along the White within
Indianapolis to return to action stage by the weekend and can't
rule out a chance of brief return to Minor flooding too.

Rivers remain high across the area, continue avoiding flood waters
and stay out of rivers.

Behind the wave, northwest flow will become more dominate aloft as
upper high pressure builds over the desert SW and upper troughing
builds to the NE of the forecast area. Meanwhile at the surface,
weak high pressure will generally be in the region leading to a
mostly dry rest of the forecast period outside of periodic chances
for showers and storms. Saturday seems to be the next best chance of
precipitation but again, those are still low chances. Temperatures
throughout the forecast period will see highs in the upper 70s to
low/mid 80s and lows from the upper 50s to mid 60s.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 114 PM EDT Wed Aug 19 2026

Impacts:

- Scattered to numerous showers/storms this afternoon/tonight

- Fog/low ceilings likely late tonight into Thursday morning

Discussion:

Convection is developing across the area and all sites will likely
see impacts at some point this afternoon into tonight. Will carry a
combination of PROB30 and TEMPO groups at all sites. Fluctuating
restrictions will be likely during convective impacts at all sites.

Late tonight as the cold front passes through the area, low clouds
and fog are likely to develop, with IFR or worse conditions
possible.

Winds will be southwesterly this afternoon, becoming light and
variable to calm overnight, then northerly late in the period.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
Flood Watch through Thursday morning for INZ021-028>031-035>049-
054>057.

&&

AVIATION...Nield
DISCUSSION...KF

Hazardous Weather Outlook
National Weather Service Indianapolis IN
350 PM EDT Wed Aug 19 2026

INZ021-028>031-035>049-054>057-202000-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Morgan-Johnson-Shelby-Rush-
350 PM EDT Wed Aug 19 2026

This hazardous weather outlook is for central Indiana.

.DAY ONE...Through Tonight.

Widespread minor to moderate river flooding will continue along the
Wabash, White, and East Fork White Rivers and adjacent lowlands.

A flood watch is in effect through 8 AM Thursday as training
thunderstorms over saturated soils could lead to localized flash
flooding. Isolated strong to severe storms are also possible with
primarily a damaging wind gust threat and potential for some hail.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thunderstorms will be possible on Saturday. Severe weather is not
expected, but lightning is a hazard with any storm.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report rainfall amounts or any severe
weather later today into tonight.

&&

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

INZ051>053-060>065-067>072-202000-
Vigo-Clay-Owen-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-
Daviess-Martin-Lawrence-Jackson-Jennings-
350 PM EDT Wed Aug 19 2026

This hazardous weather outlook is for central Indiana.

.DAY ONE...Through Tonight.

Widespread minor to moderate river flooding will continue along the
Wabash, White, and East Fork White Rivers and adjacent lowlands.

Scattered thunderstorms are possible late today into tonight. Isolated
strong to severe storms are also possible with primarily a damaging
wind gust threat and potential for some hail.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Thunderstorms will be possible on Saturday. Severe weather is not
expected, but lightning is a hazard with any storm.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report rainfall amounts or any severe
weather later today into tonight.

&&

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
424 PM EDT Wed Aug 19 2026

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

0338 PM     Rain             4 WNW Kokomo            40.49N 86.21W
08/19/2026  M1.63 Inch       Howard             IN   Trained Spotter

&&

BH

Preliminary Local Storm Report
National Weather Service Indianapolis IN
436 PM EDT Wed Aug 19 2026

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

0345 PM     Rain             1 E Linwood             40.19N 85.67W
08/19/2026  M0.80 Inch       Madison            IN   Public

&&

BH

Special Weather Statement
National Weather Service Indianapolis IN
439 PM EDT Wed Aug 19 2026

INZ040-041-192115-
Madison IN-Delaware IN-
439 PM EDT Wed Aug 19 2026

...A strong thunderstorm will impact portions of northern Madison and
northwestern Delaware Counties through 515 PM EDT...

At 438 PM EDT, Doppler radar was tracking a strong thunderstorm
capable of producing a landspout near Alexandria, or 9 miles
southwest of Fairmount, moving east at 25 mph.

HAZARD...Landspouts and winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible. Gusty winds
         could knock down tree limbs and blow around unsecured
         objects.

Locations impacted include...
Elwood, Alexandria, Summitville, and Orestes.

This includes Interstate 69 between mile markers 240 and 252.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4019 8550 4025 8583 4036 8582 4038 8573
      4038 8552
TIME...MOT...LOC 2038Z 271DEG 23KT 4030 8574

LANDSPOUT...POSSIBLE
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

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