Severe Thunderstorm Warning 112, NWS Indianapolis, IN

629 
WWUS53 KIND 271756
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
156 PM EDT Mon Apr 27 2026

INC027-083-271830-
/O.CON.KIND.SV.W.0112.000000T0000Z-260427T1830Z/
Knox IN-Daviess IN-
156 PM EDT Mon Apr 27 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR SOUTHEASTERN KNOX AND SOUTHERN DAVIESS COUNTIES...

At 155 PM EDT, a severe thunderstorm was located near Petersburg,
moving east at 50 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Washington, Loogootee, Monroe City, Wheatland, Montgomery,
Cannelburg, Alfordsville, West Boggs Lake, and Glendale Fishery.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3878 8692 3850 8692 3849 8695 3851 8700
      3850 8706 3854 8711 3852 8715 3855 8720
      3851 8730 3854 8735 3851 8737 3854 8743
      3860 8746 3861 8746
TIME...MOT...LOC 1755Z 249DEG 43KT 3859 8729 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

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668 
WWUS53 KIND 271808
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
208 PM EDT Mon Apr 27 2026

INC083-271817-
/O.CAN.KIND.SV.W.0112.000000T0000Z-260427T1830Z/
Knox IN-
208 PM EDT Mon Apr 27 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN KNOX 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 700 PM EDT for
southwestern Indiana.

LAT...LON 3851 8700 3850 8706 3854 8711 3852 8715
      3855 8719 3855 8724 3860 8724 3861 8725
      3861 8724 3862 8724 3864 8725 3863 8724
      3865 8725 3866 8724 3866 8725 3867 8726
      3878 8692 3850 8693 3849 8695
TIME...MOT...LOC 1807Z 249DEG 45KT 3864 8713 

$$

INC027-271830-
/O.CON.KIND.SV.W.0112.000000T0000Z-260427T1830Z/
Daviess IN-
208 PM EDT Mon Apr 27 2026

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 230 PM EDT
FOR SOUTHERN DAVIESS COUNTY...

At 207 PM EDT, a severe thunderstorm was located over Washington, or
12 miles northeast of Petersburg, moving east at 50 mph.

HAZARD...Quarter size hail.

SOURCE...Radar indicated.

IMPACT...Damage to vehicles is expected.

Locations impacted include...
Washington, Montgomery, Cannelburg, Alfordsville, Glendale Fishery,
and West Boggs Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3851 8700 3850 8706 3854 8711 3852 8715
      3855 8719 3855 8724 3860 8724 3861 8725
      3861 8724 3862 8724 3864 8725 3863 8724
      3865 8725 3866 8724 3866 8725 3867 8726
      3878 8692 3850 8693 3849 8695
TIME...MOT...LOC 1807Z 249DEG 45KT 3864 8713 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...<50 MPH

$$

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025 
WWUS53 KIND 271824
SVSIND

Severe Weather Statement
National Weather Service Indianapolis IN
224 PM EDT Mon Apr 27 2026

INC027-271834-
/O.EXP.KIND.SV.W.0112.000000T0000Z-260427T1830Z/
Daviess IN-
224 PM EDT Mon Apr 27 2026

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DAVIESS COUNTY WILL
EXPIRE AT 230 PM EDT...

The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.  However, small hail is still possible with
this thunderstorm.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
southwestern Indiana.

LAT...LON 3851 8700 3850 8706 3854 8711 3852 8715
      3855 8719 3855 8724 3860 8724 3861 8725
      3861 8724 3862 8724 3864 8725 3863 8724
      3865 8725 3866 8724 3866 8725 3867 8726
      3878 8692 3850 8693 3849 8695
TIME...MOT...LOC 1824Z 250DEG 51KT 3872 8685 

$$

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Area Forecast Discussion
National Weather Service Indianapolis IN
101 PM EDT Mon Apr 27 2026

.KEY MESSAGES...

- Multiple rounds of thunderstorms expected today, severe weather is
  possible this afternoon into tonight.

- Isolated Showers and thunderstorms possible on Tuesday, mainly
  across southern Indiana.

- Cooler temperatures expected Wednesday through Sunday.

&&

.FORECAST UPDATE...
Issued at 951 AM EDT Mon Apr 27 2026

Surface analysis late this morning shows low pressure in place over
NE Kansas. A MCC was found head of this low pressure streaming
across N MO, IA and Central IL. This system was propagating eastward
and spreading high cloud over Indiana. A few light showers were
reaching southeast Indiana, but were dissipating upon arrival.
GOES16 shows steady state storm top temperatures.

CAMS suggest some dissipation of the convection upon arrival in
Indiana this afternoon, particularly in SW Central Indiana. Most are
in agreement of showers and storms over west Central Indiana
advancing east and reaching NW Central Indiana through the
afternoon. Thus confidence is high for precipitation to eventually
overspread much of the western and northern parts of the forecast
area. Thus have used biggest pops across the northwest parts of the
forecast area.

Afternoon rain showers and clouds may impact the severe weather
threat later in the day, CAMS still suggest development this evening
across southern Central Indiana, as this is where best instability
will be.

&&

.MESOSCALE UPDATE...
Issued at 100 PM EDT Mon Apr 27 2026

Surface analysis late early this morning shows deepening low
pressure IA and MN, with a cold front extending south across IA to
Central MO and NE OK. An area of strong convection had developed
within the warm sector, over IL and was pushing east toward Indiana.
Cloud tops continue to show steady state or slightly cooling tops.
However the strongest echos were now pushing into a more stable area
of air as showers have been falling in the Wabash Valley. Expected
progression of the storms is to east over the next 1-2 hours,
impacting HUF, LAF and Rockville. Warnings may be needed however a
weakening trend is expected as the storm encounter a less favorable
environment. SPC mesoanalysis pages show minimal CAPE and a
decreasing wind shear gradient in place across Indiana. Will
continue to monitor.

&&

.DISCUSSION (Today through Sunday)...
Issued at 330 AM EDT Mon Apr 27 2026

TODAY'S SEVERE WEATHER POTENTIAL

A potent vort max is ejecting out of the Rockies as of this writing.
Lee cyclogenesis is ongoing over the high plains, with the resulting
cyclone expected to move northeastward through sunrise. The system
passes to our northwest this afternoon. Strong mass response should
drive a potent southerly low-level jet (LLJ), which increases into
the evening hours.

Flow at the surface may still be out of the east-southeast through
this morning, as surface high pressure slides eastward. This may
limit moisture return over Indiana, with some CAMs showing
relatively dry conditions into this afternoon (RH as low as 45
percent). Winds gradually become more southerly through the day,
allowing dew points to increase through the evening hours.

Two scenarios exist for convective evolution today. First,
convection developing over Kansas (as of 3am) grows upscale into an
MCS and propagates eastward through the night into the strengthening
LLJ. Some CAM guidance like the HRRR show such a scenario, with the
MCS arriving around 19z. Of particular interest is the relatively
dry air mass over Indiana and whether this causes the approaching
MCS to weaken. Also of interest is strong wind gusts shown by some
CAMs within the anvil region of the MCS. This appears to be driven
by strong evaporational cooling as rain falls into the dry low-level
air mass. Momentum from the strengthening LLJ is then mixed
downward, allowing for the strong wind gusts. Guidance also hints at
a flooding threat on the southern margin of the MCS where training
cell motions are most favored.

The second scenario is that there is no MCS, or it passes to our
north, and thunderstorm development occurs over Illinois along the
systems's trailing cold front. Such a scenario would allow
instability to build up until explosive convective development
occurs. Shear vectors slightly off boundary should allow for
initially discrete convection, with shear magnitudes favoring
supercells over Illinois. Upscale growth into a line then appears
likely with eastward extent. Moisture advection ahead of the front
should allow convection to sustain through Indiana and into Ohio. It
is possible that the MCS from the first scenario does arrive and
affects only part of our CWA with the cold frontal convection
arriving later for those that did not see the MCS.

Given the potential for multiple rounds of convection, pin-pointing
exact timing remains tricky. Additionally, keying in on which
hazards are most likely and where is a challenge as each round of
convection alters the environment ahead of the next round. That
being said, all hazards are possible with today's severe weather
given the amount of shear (40-60kt) and instability (1500-2500 J/Kg
MLCAPE) expected. All hazards are possible especially with any
supercell that develops. Supercells are most likely over Illinois,
however, with upscale growth increasingly likely by the time things
reach Indiana. Strong to damaging winds are favored with upscale
growth or in scenarios that result in an dominant MCS. Given the
strong LLJ and high amounts of SRH (200-300 m2s2) present within the
warm sector, a QLCS tornado threat is possible as well.

TUESDAY ONWARD

A second shortwave ejecting from the Rockies closely behind Monday's
may provide another chance at showers and storms. However, given the
potency of Monday's system, much of the moist unstable air will have
been swept away by the time the second system arrives. Sufficient
moisture return may be possible for storms over the southern half of
Indiana late Tuesday. Severe weather may again be possible should
this occur, especially further south, but this depends on how
quickly moisture and instability can advect back northward.

After Tuesday, persistent troughing aloft takes hold and cooler than
average conditions are favored for the second half of the week and
into the weekend. High temperatures in the 60s and lows in the 40s
appear likely Wednesday through Saturday. Guidance is hinting at
some lows into the 30s possible this weekend, which could mean frost
potential.

&&

.AVIATION (12Z TAF Issuance)...
Issued at 627 AM EDT Mon Apr 27 2026

Impacts:

- S-SE wind gusts 20 to 30 kt today
- Scattered to numerous convection, mainly afternoon into evening
- LLWS around 45kt this evening/tonight
- MVFR ceilings this evening into early Tuesday

Discussion:

VFR conditions start the day with a gradual lowering of ceilings
occurring. Winds will increase later this morning, with frequent
gusts to around 25kt, with a potential for a few gusts near 30kt
in the afternoon.

Uncertainty ramps up quickly today in terms of rain. There could
be some weakening convection in the morning hours. Some convection
may develop after 18Z depending on mesoscale features, but better
odds of thunderstorms will occur after 22Z. Will use PROB30s, but
when details become clearer, TEMPOs will be needed in later
issuances.

Otherwise, MVFR ceilings are expected to develop as rain becomes
more widespread and low-level moisture increases. These ceilings may
persist into Tuesday morning. Additionally, a cold front is
anticipated late tonight with a wind shift to westerly behind the
front. A period of low-level wind shear is likely ahead of the
front as southerly flow increases.

&&

.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&

MESOSCALE...Puma
UPDATE...Puma
AVIATION...50/Eckhoff
DISCUSSION...Eckhoff

Hazardous Weather Outlook
National Weather Service Indianapolis IN
352 AM EDT Mon Apr 27 2026

INZ021-028>031-035>049-051>057-060>065-067>072-280800-
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-
352 AM EDT Mon Apr 27 2026

This hazardous weather outlook is for central Indiana.

.DAY ONE...Today and Tonight.

Severe thunderstorms are possible this afternoon into tonight. The
main threat will be damaging straight line winds, although isolated
tornadoes will also be possible. Flooding is also possible.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

More Thunderstorms are possible again on Tuesday, mainly across
southern Central Indiana.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to monitor forecast trends this afternoon.

&&

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
123 PM EDT Mon Apr 27 2026

INZ028-035-043-044-271815-
Fountain IN-Parke IN-Warren IN-Vermillion IN-
123 PM EDT Mon Apr 27 2026

...Strong thunderstorms will impact portions of Fountain,
northwestern Parke, northwestern Warren and Vermillion Counties
through 215 PM EDT...

At 123 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Vermilion Regional Airport to near Paris.
Movement was northeast at 30 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Clinton, Covington, Veedersburg, Williamsport, Newport, Attica,
Fairview Park, Cayuga, Montezuma, West Lebanon, Dana, Kingman,
Perrysville, Mecca, State Line City, Blanford, Lodi, Pence, Foster,
and Yeddo.

This includes Interstate 74 between mile markers 1 and 17.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
west central Indiana.

&&

LAT...LON 4036 8753 4041 8712 3969 8733 3963 8753
TIME...MOT...LOC 1723Z 238DEG 27KT 4026 8757 3963 8778

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

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Special Weather Statement
National Weather Service Indianapolis IN
128 PM EDT Mon Apr 27 2026

INZ067-068-271800-
Daviess IN-Knox IN-
128 PM EDT Mon Apr 27 2026

...A strong thunderstorm will impact portions of southern Knox and
Daviess Counties through 200 PM EDT...

At 128 PM EDT, Doppler radar was tracking a strong thunderstorm near
St. Francisville, or 9 miles south of Vincennes, moving east at 60
mph.

HAZARD...Winds in excess of 40 mph and penny size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Vincennes, Washington, Monroe City, Wheatland, Montgomery, Decker,
Cannelburg, Alfordsville, West Boggs Lake, and Glendale Fishery.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
southwestern Indiana.

&&

LAT...LON 3845 8762 3855 8766 3859 8761 3863 8762
      3883 8691 3849 8695 3851 8700 3850 8706
      3854 8711 3852 8715 3855 8720 3851 8730
      3854 8735 3851 8737 3854 8743 3850 8749
      3852 8755 3849 8754 3850 8758 3845 8761
TIME...MOT...LOC 1728Z 250DEG 52KT 3854 8756

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

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