Severe Thunderstorm Warning 121, NWS Northern Indiana

Area Forecast Discussion
National Weather Service Northern Indiana
229 PM EDT Wed Apr 22 2026

.KEY MESSAGES...

- Strong storms possible into this evening with main threat of
  gusty winds mainly south of I-80 through around 9pm.

- Unseasonably mild today through Friday with highs in the mid
  70s to around 80 degrees.

- More storms Friday and early next week.

&&

.DISCUSSION...
Issued at 126 PM EDT Wed Apr 22 2026

A weak disturbance and associated frontal boundary will push
southeasterly this evening. Ahead of this disturbance is decent
surface instability with values of 1500-2500 J/kg due to the
unseasonably warm temperatures with highs in the upper 70s to
low 80s. Marginal mid-level lapse rates of 6-7 deg/km and bulk
shear values mainly less than 20 kts will keep the storms
relatively unorganized and on the weak side, however as seen
already today over Lake Michigan a fairly organized and slow
moving storm had developed in the close proximity to the
boundary. So storms will mainly remain the garden variety but a
few isolated storms could become stronger. The main threat would
be gusty outflow winds, forecasted downdraft CAPE values around
500-800 J/kg will be available. Some small hail would also be
possible but should remain less than 0.75 inch. These storms
will move southeastward with the disturbance through the evening
and expected to push out of the area around 9-10 PM EDT.

Thursday looks to remain quiet weather wise through the majority
of the day with again a continuation of much above normal
temperatures with highs again in the upper 70s to low 80s.
An approaching cool frontal boundary begins to push
southeastward on Friday bringing another round of showers and
thunderstorms and slightly cooler temperatures with the
increase in clouds with highs on Friday in the 70s. Into the
weekend cooler temperatures although still slightly above normal
with highs in the upper 60s to low 70s for both Saturday and
Sunday. A few remaining showers will persist on Saturday but
Sunday looks to be dry and should be a fairly nice spring day
with ridging pushing in from the west.

By Monday into Tuesday another trough will move eastward into
the area increasing rain and thunderstorm chances across the
area. As mentioned in the previous discussion WPC rainfall
forecast still has around 0.75-1.00 inch on Monday which may
hamper river levels from dropping as fast and even may bring
some slight increases. Of course, this is depending on where
exactly the rain falls that will determine which rivers are
affected and by how much. Definitely will continue to keep an
eye on this potential. High temperatures in the 70s on Monday
and cooler temperatures Tuesday and Wednesday with highs only in
the 60s and rain showers.

&&

.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1236 PM EDT Wed Apr 22 2026

As of 1630Z, one storm has developed over southern Lake Michigan
on the warm side of a stationary front located near Grand
Rapids. Additional scattered storms are expected to develop this
afternoon between 18-21Z across northern Indiana south of I-80
and sink southeast through the evening. Outside of scattered
storms this afternoon and evening, VFR conditions prevail. Have
maintained chances for storms between 19-23Z at KFWA with
potential for MVFR ceilings and visibilities. In any storms,
small hail, gusty winds, and heavy rain will all be possible
hazards. After sunset, any remaining showers and storms should
dissipate and winds will become light and variable.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.

&&

DISCUSSION...Andersen/Skipper
AVIATION...Johnson

Hazardous Weather Outlook
National Weather Service Northern Indiana
341 PM EDT Wed Apr 22 2026

INZ005>009-012>015-017-018-020-022>027-032>034-103-104-116-203-204-
216-MIZ078>081-177-277-OHZ001-002-004-005-015-016-024-025-231945-
Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-Pulaski-Marshall-
Fulton IN-Whitley-Allen IN-White-Cass IN-Miami-Wabash-Huntington-
Wells-Adams-Grant-Blackford-Jay-Northern La Porte-
Eastern St. Joseph IN-Northern Kosciusko-Southern La Porte-
Western St. Joseph IN-Southern Kosciusko-Cass MI-St. Joseph MI-
Branch-Hillsdale-Northern Berrien-Southern Berrien-Williams-
Fulton OH-Defiance-Henry-Paulding-Putnam-Van Wert-Allen OH-
341 PM EDT Wed Apr 22 2026 /241 PM CDT Wed Apr 22 2026/

This Hazardous Weather Outlook is for northern Indiana, southwest
Michigan and northwest Ohio.

.DAY ONE...This afternoon and tonight.

Scattered thunderstorms persist into early tonight. Wind gusts to 50
mph and small hail are likely with the stronger storms.

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

Additional thunderstorms are expected Friday into Friday night as
well as late Monday into Monday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

LMZ043-046-231945-
New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI-
341 PM EDT Wed Apr 22 2026

This Hazardous Weather Outlook is for the nearshore waters of
southeastern Lake Michigan.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

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

Thunderstorms are possible Friday into Friday into Friday evening
and again early next week. Conditions may be hazardous to small
craft on Saturday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

Preliminary Local Storm Report
National Weather Service Northern Indiana
347 PM EDT Wed Apr 22 2026

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

0147 PM     Hail             Walkerton               41.47N 86.48W
04/22/2026  E0.70 Inch       St. Joseph         IN   Public

            Photo of hail up to dime size near
            Walkerton. Time estimated via radar.

&&

MJ

Special Weather Statement
National Weather Service Northern Indiana
352 PM EDT Wed Apr 22 2026

INZ009-018-OHZ004-015-222030-
De Kalb IN-Allen IN-Defiance OH-Paulding OH-
352 PM EDT Wed Apr 22 2026

...STRONG THUNDERSTORMS WILL IMPACT ALLEN...SOUTHERN DE KALB...
NORTHWESTERN DEFIANCE AND NORTHWESTERN PAULDING COUNTIES THROUGH 430
PM EDT...

At 352 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Auburn to 8 miles south of Churubusco.
Movement was southeast at 25 mph.

HAZARD...Winds in excess of 30 mph and half inch 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...
Fort Wayne, New Haven, Auburn, Garrett, Hicksville, Butler,
Huntertown, Waterloo, Antwerp, Woodburn, Grabill, St. Joe,
Leo-cedarville, Concord, Newville, Butler Center, Saint Johns,
Spencerville In Dekalb County, Zulu, and Moore.

This includes the following highways...
 Interstate 469 between mile markers 13 and 30.
 Interstate 69 in Indiana between mile markers 305 and 329.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4092 8496 4113 8534 4144 8501 4136 8454
TIME...MOT...LOC 1952Z 294DEG 20KT 4137 8499 4112 8528

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

Andersen

Special Weather Statement
National Weather Service Northern Indiana
416 PM EDT Wed Apr 22 2026

INZ009-MIZ081-OHZ001-002-004-005-222100-
De Kalb IN-Hillsdale MI-Henry OH-Defiance OH-Fulton OH-Williams OH-
416 PM EDT Wed Apr 22 2026

...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN DE KALB...
HILLSDALE...NORTHERN DEFIANCE...HENRY...FULTON AND WILLIAMS COUNTIES
THROUGH 500 PM EDT...

At 416 PM EDT, Doppler radar was tracking a cluster of strong
thunderstorms over Holiday City, or near Montpelier, moving southeast
at 25 mph.

HAZARD...Winds in excess of 30 mph and half inch 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...
Napoleon, Bryan, Hillsdale, Wauseon, Archbold, Montpelier, Swanton,
Morenci, Delta, Jonesville, Edgerton, West Unity, Pioneer, Stryker,
Fayette, Liberty Center, Edon, Mcclure, Holiday City, and Edgerton In
Williams County.

This includes Interstate 80 in Ohio between mile markers 1 and 48.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4122 8389 4144 8486 4153 8483 4153 8481
      4158 8481 4207 8462 4207 8457 4198 8436
      4171 8436 4172 8388 4128 8388
TIME...MOT...LOC 2016Z 300DEG 22KT 4158 8451

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

Andersen

Special Weather Statement
National Weather Service Northern Indiana
418 PM EDT Wed Apr 22 2026

INZ018-025-026-222100-
Huntington IN-Wells IN-Allen IN-
418 PM EDT Wed Apr 22 2026

...A STRONG THUNDERSTORM WILL IMPACT SOUTHWESTERN ALLEN...HUNTINGTON
AND NORTH CENTRAL WELLS COUNTIES THROUGH 500 PM EDT...

At 417 PM EDT, Doppler radar was tracking a strong thunderstorm near
Andrews, or near Huntington, moving east at 30 mph.

HAZARD...Wind gusts up to 40 mph and pea 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...
Huntington, Andrews, Markle, Aboite, Roanoke, Zanesville, Nine Mile,
Bowerstown, Goblesville, Bracken, Majenica, Rockford, Mahon, and
Bippus.

This includes the following highways...
 Interstate 469 near mile marker 0, near mile marker 3, and between
mile markers 7 and 8.
 Interstate 69 in Indiana between mile markers 281 and 300.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4080 8564 4100 8564 4101 8521 4072 8528
TIME...MOT...LOC 2017Z 287DEG 27KT 4094 8561

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

MCS

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