Severe Thunderstorm Warning 348, NWS Indianapolis, IN

832 
WWUS53 KIND 041927
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
327 PM EDT Fri Sep 4 2026

INC059-145-041937-
/O.CAN.KIND.SV.W.0348.000000T0000Z-260904T1945Z/
Shelby IN-Hancock IN-
327 PM EDT Fri Sep 4 2026

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SHELBY AND
SOUTHEASTERN HANCOCK COUNTIES IS CANCELLED...

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

LAT...LON 3953 8558 3959 8563 3967 8563 3973 8554
      3968 8537 3956 8542
TIME...MOT...LOC 1927Z 309DEG 19KT 3962 8553 

$$

INC139-041945-
/O.CON.KIND.SV.W.0348.000000T0000Z-260904T1945Z/
Rush IN-
327 PM EDT Fri Sep 4 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 345 PM EDT
FOR NORTHERN RUSH COUNTY...

At 327 PM EDT, a severe thunderstorm was located near Rushville, or
14 miles northeast of Shelbyville, moving southeast at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
Rushville and Arlington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3953 8558 3959 8563 3967 8563 3973 8554
      3968 8537 3956 8542
TIME...MOT...LOC 1927Z 309DEG 19KT 3962 8553 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

ME

Area Forecast Discussion
National Weather Service Indianapolis IN
153 PM EDT Fri Sep 4 2026

.KEY MESSAGES...

- Heat Advisory in effect for all of central Indiana through late
  today with peak afternoon heat index values up to 108 degrees

- Heat Advisory extended into Saturday afternoon for the central
  and southwestern half of central Indiana.

- Isolated to scattered thunderstorms will be possible at times
  late today through Saturday.

&&

.DISCUSSION (This evening through Friday)...
Issued at 152 PM EDT Fri Sep 4 2026

Broad ridging centered over the Plains will amplify while slowly
drifting westward. This allows a trough over the northeastern US to
push into the Ohio River Valley, bringing an end to the current heat
wave. The ridge, temporarily shunted west, returns next week with
renewed heat and humidity. The secondary round of heat does not
appear to be as prolonged, with another trough arriving late next
week along with a reduction in temperatures. Scattered showers and
thunderstorms are possible with both troughs, though chances are
generally 40 percent or lower due to limited moisture and forcing.

Today through tonight

Temperatures are already into the mid 90s as of 1pm. Highs are once
again expected to reach the mid to upper 90s with dew points in the
low 70s. A Heat Advisory remains in effect as Heat Risk remains in
the extreme category with heat indices around 105 degrees.

A few isolated showers and thunderstorms are possible today but
overall the chances are low. Limited large-scale forcing and dryness
in the atmosphere will make cumulus growth difficult. ACARS
soundings show a very dry atmosphere along with a cap around 700mb.
Any attempts at convective initiation will be confined to subtle
features like gravity waves or horizontal convective rolls. Overall,
convective chances are very low today.

Saturday

The first of the aforementioned cold fronts arrives on Saturday from
the northeast. Atmospheric moisture is modeled to increase tomorrow
with better lapse rates. With the front acting as an initiating
force, our convective chances are a lot better compared to today.
Still, large-scale mid/upper-level forcing is displaced to the
northeast. Our convective chances are therefore dependent on the
front itself.

Two scenarios exist. First, the front initiates convection late
tonight or tomorrow morning, which then propagates southwestward
into the southwesterly low-level flow ahead of the boundary. This
would generally limit severe potential with the primary hazard
being heavy rainfall and localized flooding.

Second, the front enters central Indiana dry allowing daytime
heating to maximize. Increased instability along the front would
help initiate convection during the afternoon, which would propagate
southeastward in line with the shear vector. Bulk shear is not
excessive, but enough to allow for some storm-scale organization
into clusters or small bowing segments. Steeper lapse rates and
residual dryness may present a downburst or wind threat.

In the second scenario, maximized heating may necessitate the need
to expand the Heat Advisory. High-resolution guidance showing
scenario two also shows high temperatures once again in the mid 90s.
The only exception are locations to our northeast behind the front,
with FROPA some time around noon at the IN/OH line.

SUNDAY AND MONDAY

Northeasterly flow behind the cold front brings a cool and dry air
mass into the region. Temperatures fall back to near normal (low 80s
for highs and low 60s for lows) along with much lower dew points.
These conditions continue into early next week before the ridge
begins building back in by late Tuesday into Wednesday.

&&

.AVIATION (18Z TAF Issuance)...
Issued at 152 PM EDT Fri Sep 4 2026

Impacts:

- Low chance of an isolated shower or thunderstorm today
- Better chances for showers and storms on Saturday
- Wind shift to northeasterly Saturday afternoon/evening

Discussion:

Mainly VFR conditions expected through the TAF period as a cold
front approaches from the northeast. Aside from a low (less than 15
percent) chance of a shower/storm today, quiet and hot weather is
expected.

Shower and storm chances as the front arrives on Saturday. The best
chance of storms is across the northeastern portion of central
Indiana from IND to BMG. Activity should be scattered in nature, so
a VCSH group was added to IND for now until timing can be refined.
MVFR or worse conditions possible in any thunderstorm along with
gusty winds.

The front sweeps through late Saturday afternoon or early evening. A
wind shift to northeasterly is anticipated. Speeds around 10kt with
gusts to as high as 20kt likely.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
Heat Advisory until 8 PM EDT this evening for INZ021-031-038-
040>042-049.

Heat Advisory until 8 PM EDT Saturday for INZ028>030-035>037-039-
043>048-051>057-060>065-067>072.

&&

AVIATION...Eckhoff
DISCUSSION...Eckhoff

Hazardous Weather Outlook
National Weather Service Indianapolis IN
355 AM EDT Fri Sep 4 2026

INZ021-028>031-035>049-051>057-060>065-067>072-050800-
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-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
355 AM EDT Fri Sep 4 2026

This hazardous weather outlook is for central Indiana.

.DAY ONE...Today and Tonight.

A Heat Advisory is in effect. Peak heat index values between 100 and
108 expected.

Can't rule out a few isolated thunderstorms at times today.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Heat continues Saturday with peak afternoon heat index values near
100.

Thunderstorms are possible at times through Saturday night. Isolated
damaging wind gusts and lighting are the primary hazards.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated at this time.

&&

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

Special Weather Statement
National Weather Service Indianapolis IN
213 PM EDT Fri Sep 4 2026

INZ042-041845-
Randolph IN-
213 PM EDT Fri Sep 4 2026

...A strong thunderstorm will impact portions of northeastern
Randolph County through 245 PM EDT...

At 213 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles south of Portland, moving east at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Union City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4031 8502 4031 8480 4019 8481
TIME...MOT...LOC 1813Z 284DEG 21KT 4032 8493

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

ME

Special Weather Statement
National Weather Service Indianapolis IN
235 PM EDT Fri Sep 4 2026

INZ042-041900-
Randolph IN-
235 PM EDT Fri Sep 4 2026

...Strong thunderstorms will impact portions of eastern Randolph
County through 300 PM EDT...

At 235 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Union City to near Winchester. Movement
was southeast at 25 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Winchester, Union City, Lynn, and Saratoga.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4001 8500 4013 8512 4026 8491 4024 8480
      4001 8481
TIME...MOT...LOC 1835Z 303DEG 20KT 4025 8482 4012 8504

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

ME

Special Weather Statement
National Weather Service Indianapolis IN
252 PM EDT Fri Sep 4 2026

INZ048-049-056-057-041915-
Rush IN-Henry IN-Shelby IN-Hancock IN-
252 PM EDT Fri Sep 4 2026

...A strong thunderstorm will impact portions of northern Shelby,
southern Hancock, northwestern Rush and southwestern Henry Counties
through 315 PM EDT...

At 251 PM EDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Greenfield, or 10 miles north of Shelbyville,
moving east at 20 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Shelbyville, Greenfield, Knightstown, New Palestine, Morristown,
Carthage, Fairland, Spring Lake, Manilla, and Arlington.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3949 8564 3964 8595 3968 8595 3983 8581
      3985 8545
TIME...MOT...LOC 1851Z 291DEG 17KT 3968 8585

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

ME