Remnants of overnight MCS moved across the area during the day with occasional strong storms during peak heating. This activity left behind remnant outflows which focused late afternoon/evening storms across southern portions of the area.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS IWX wrote it up.
Remnants of overnight MCS moved across the area during the day with occasional strong storms during peak heating. This activity left behind remnant outflows which focused late afternoon/evening storms across southern portions of the area. Additional storms developed along and just ahead of a cold front Tuesday evening into the early overnight hours.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Northern Indiana wrote its last area forecast discussion before the first event at Sep 3, 5:37 PM EST, 5 hours 59 minutes earlier.
Area Forecast Discussion
National Weather Service Northern Indiana
637 PM EDT Tue Sep 3 2019
.SYNOPSIS...
Issued at 425 PM EDT Tue Sep 3 2019
Some strong to severe storms are expected to develop this evening
into early tonight and spread from west to east. Dry weather
returns Wednesday into the end of the week. It will turn cooler,
with highs in the 70s and lows in the upper 40s and 50s. It will be
breezy through Wednesday, with hazardous swimming conditions
expected at Lake Michigan beaches.
&&
.UPDATE...
Issued at 637 PM EDT Tue Sep 3 2019
Old outflow with theta-e advection overtop has sparked
isolated/elevated convection over far southern portions of the
forecast area over the last few hours. Lingering capping from this
morning's activity has limited organization and severity of this
activity so far. Latest radar trends suggest this convection will
settle south of the forecast area through 8 pm ET. The best
opportunity for convection still appears to be this evening
(01-03z nw of US 24 and 03-05z southeast of US 24) along the
system cold front as higher low level theta-e air advects in and
height falls overspread on southern fringe of a mid level
shortwave. CAPE and shear profiles continue to suggest a
conditional threat for discrete supercells and the potential for
segments/clustering, though less favorable mid-late evening timing
and some lingering capping near 850-800 mb likely limiting
factors for a more widespread severe threat.
&&
.SHORT TERM...(This Evening through Wednesday)
Issued at 420 PM EDT Tue Sep 3 2019
Continued difficult convective forecast. Rain cooled/persistent
anvil leading to sharp thermal discontinuity/pseudo-warm front
from north central Illinois into west central Indiana. Gradient on
order of 10F over 20 miles, KGUS 73F KLAF 83F at 19 UTC.
Additional storms firing now near Kankakee near this boundary
within prefrontal trough with some concern for isolated severe
with effective shear on order of 40 knots. Higher shear and
better destabilization upstream should limit areal extent of
severe storms this afternoon. Suspect better upstream linear
convection from south central Wisconsin into northern Illinois
with strong shortwave support to be the primary storm/severe
potential late evening into early tonight, roughly 00 UTC
northwest to 04-05 UTC southeast. These storms evolving into
linear/bowing segments with damaging wind the greatest threat and
lesser non zero hail/tornado potential.
Significantly cooler/drier post frontal air mass settles in for
Wednesday as expansive 1022 mb ridge settles over the Great Lakes.
&&
.LONG TERM...(Wednesday Night through Tuesday)
Issued at 420 PM EDT Tue Sep 3 2019
A more dampened shortwave to follow in northwesterly mid level
flow over Great Lakes may bring some increase in clouds late
Thursday night/Friday, though maintain a dry forecast with limited
moisture availability. Large scale subsidence over our region as
Dorian lifts up the western Atlantic this weekend with dry weather
and cooler than normal temperatures expected. Continued with low
chance pops associated with another weak frontal system on
Sunday.
&&
.AVIATION...(For the 00Z TAFS through 00Z Wednesday Evening)
Issued at 637 PM EDT Tue Sep 3 2019
A cold front is still expected to bring at least a broken line of
convection southeast through northern Indiana this evening into
the early overnight. Best chances for thunderstorms (possibly
strong-severe) are from 01-03z at KSBN and 03-05z at KFWA, though
confidence is somewhat low regarding coverage/intensity given
lingering capping. A period of MVFR-IFR vis/cigs will be possible
with this convection. Drier air then funnels in post-frontal
tonight into Wednesday with VFR conditions and wnw winds
anticipated.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...Beach Hazards Statement through Wednesday afternoon for INZ003.
Lakeshore Flood Advisory until 3 PM CDT Wednesday for INZ003.
MI...Lakeshore Flood Advisory until 4 PM EDT Wednesday for MIZ077.
Beach Hazards Statement through Wednesday afternoon for MIZ077.
OH...NONE.
LM...Small Craft Advisory until 4 PM EDT Wednesday for LMZ043-046.
&&
UPDATE...Steinwedel
SYNOPSIS...Murphy
SHORT TERM...Murphy
LONG TERM...Murphy
AVIATION...Steinwedel
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www.youtube.com/NWSNorthernIndianaHazardous Weather Outlook...UPDATED National Weather Service Northern Indiana 439 PM EDT Tue Sep 3 2019 INZ004>009-012>018-020-022>027-032>034-MIZ078>081-OHZ001-002-004-005- 015-016-024-025-042045- St. Joseph IN-Elkhart-Lagrange-Steuben-Noble-De Kalb-Starke-Pulaski- Marshall-Fulton IN-Kosciusko-Whitley-Allen IN-White-Cass IN-Miami- Wabash-Huntington-Wells-Adams-Grant-Blackford-Jay-Cass MI- St. Joseph MI-Branch-Hillsdale-Williams-Fulton OH-Defiance-Henry- Paulding-Putnam-Van Wert-Allen OH- 439 PM EDT Tue Sep 3 2019 /339 PM CDT Tue Sep 3 2019/ This Hazardous Weather Outlook is for northern Indiana, southwest Michigan and northwest Ohio. .DAY ONE...Tonight. There is a threat for strong to severe thunderstorms late this afternoon through the early overnight, best chances between 8 pm EDT and midnight. The main threats will be large hail, damaging winds and locally heavy rain. An isolated tornado will also be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Thunderstorms are possible Sunday into Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this evening. LMZ043-046-042045- New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI- 439 PM EDT Tue Sep 3 2019 This Hazardous Weather Outlook is for The Nearshore Waters of Southeastern Lake Michigan. .DAY ONE...Tonight. There is a threat for strong to severe thunderstorms this evening. Conditions hazardous to small crafts are expected into tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Conditions hazardous to small crafts are expected Wednesday. Thunderstorms are possible Sunday into Monday. MIZ077-042045- Berrien- 439 PM EDT Tue Sep 3 2019 ...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...LAKESHORE FLOOD ADVISORY IN EFFECT FROM 8 PM THIS EVENING TO 4 PM EDT WEDNESDAY... This Hazardous Weather Outlook is for southwest Michigan. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Beach Hazards Statement. Lakeshore Flood Advisory. There is a threat for strong to severe thunderstorms late this afternoon into this evening, best chances between 8 pm EDT and midnight. The main threats will be large hail, damaging winds and locally heavy rain. An isolated tornado will also be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Lakeshore Flood Advisory. Thunderstorms are possible Sunday and Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this evening. INZ003-042045- La Porte- 339 PM CDT Tue Sep 3 2019 ...LAKESHORE FLOOD ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 3 PM CDT WEDNESDAY... This Hazardous Weather Outlook is for northern Indiana. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Beach Hazards Statement Lakeshore Flood Advisory. There is a threat for strong to severe thunderstorms late this afternoon into this evening, best chances between 8 pm EDT and midnight. The main threats will be large hail, damaging winds and locally heavy rain. An isolated tornado will also be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Lakeshore Flood Advisory. Beach Hazards Statement Thunderstorms are possible Sunday and Monday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this evening.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
652 PM EDT TUE SEP 3 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0130 PM NON-TSTM WND DMG ARCOLA 41.10N 85.29W
09/03/2019 ALLEN IN FIRE DEPT/RESCUE
ROOF BLOWN OFF BUILDING WITH SEVERAL TREES
AND POWER LINES ALSO DOWN. TIME ESTIMATED.
&&Special Weather Statement National Weather Service Northern Indiana 948 PM EDT Tue Sep 3 2019 MIZ077-040215- Berrien- 948 PM EDT Tue Sep 3 2019 ...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN BERRIEN COUNTY... At 948 PM EDT, a strong thunderstorm was located near Lake Michigan Beach, or 9 miles north of Benton Harbor, moving east at 45 mph. Wind gusts up to 50 mph and half inch hail are possible with this storm. Locations impacted include... Benton Harbor, Benton Heights, Watervliet, Coloma, Lake Michigan Beach, Paw Paw Lake and Riverside. This includes the following highways... Interstate 196 between mile markers 0 and 7. Interstate 94 in Michigan between mile markers 34 and 42. && LAT...LON 4212 8622 4214 8646 4224 8636 4224 8622 TIME...MOT...LOC 0148Z 275DEG 49KT 4225 8647 HAIL...0.50IN WIND...50MPH MCS
Special Weather Statement National Weather Service Northern Indiana 1128 PM EDT Tue Sep 3 2019 INZ005>007-040400- Lagrange-Steuben-Elkhart- 1128 PM EDT Tue Sep 3 2019 ...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT STEUBEN...NORTHEASTERN ELKHART AND LAGRANGE COUNTIES... At 1126 PM EDT, strong thunderstorms were clustered near Middlebury Goshen, and Lagrange, moving east at 45 mph. Winds in excess of 40 mph and pea size hail are possible with these thunderstorms. Locations impacted include... Goshen, Angola, Lagrange, Middlebury, Fremont, Bristol, Hamilton, Topeka, Millersburg, Scott, Wolcottville, Ashley, Shipshewana, Hudson, Orland, Honeyville, Flint, Lake Gauge, Nevada Mills and Brushy Prairie. This includes the following highways... Interstate 69 in Indiana between mile markers 341 and 357. Interstate 80 in Indiana between mile markers 96 and 149. Frequent cloud to ground lightning is occurring with these thunderstorms. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 4176 8491 4153 8489 4152 8579 4176 8591 TIME...MOT...LOC 0326Z 270DEG 40KT 4161 8573 HAIL...0.25IN WIND...40MPH MCS
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1154 PM EDT TUE SEP 3 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 PM TSTM WND DMG 5 WNW MARCELLUS 42.06N 85.90W
09/03/2019 CASS MI TRAINED SPOTTER
WHOLE TREE UPROOTED BLOCKING ROAD. OTHER
LOCATIONS NEARBY WITH LARGE TREE LIMBS
DOWNED. TIME ESTIMATED FROM RADAR.
&&
NDMSpecial Weather Statement
National Weather Service Northern Indiana
1157 PM EDT Tue Sep 3 2019
INZ006-007-009-OHZ001-040430-
Lagrange-De Kalb-Steuben-Williams-
1157 PM EDT Tue Sep 3 2019
...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT STEUBEN...NORTHERN DE
KALB...SOUTHEASTERN LAGRANGE AND WESTERN WILLIAMS COUNTIES...
At 1156 PM EDT, strong thunderstorms were clustered near Lagrange
and Angola, moving east at 45 mph.
Winds in excess of 40 mph and pea size hail are possible with these
thunderstorms.
Locations impacted include...
Angola, Lagrange, Edgerton, Hamilton, Edon, Edgerton In Williams
County, Columbia, Wolcottville, Ashley, Hudson, Blakeslee, Alvarado,
Brushy Prairie, Pleasant Lake, Hamilton Lake, Golden Lake, Big Long
Lake, Salem Center, Artic and Helmer.
This includes the following highways...
Interstate 69 in Indiana between mile markers 338 and 352.
Interstate 80 in Indiana between mile markers 152 and 156.
Interstate 80 in Ohio between mile markers 0 and 5.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4167 8470 4144 8471 4151 8519 4153 8519
4153 8534 4154 8545 4169 8548
TIME...MOT...LOC 0356Z 270DEG 49KT 4163 8529
HAIL...0.25IN
WIND...40MPH
MCSThe Northern Indiana radar (KIWX), 98 km away, was scanning. The volume nearest the first event began at 04:33 UTC.
1 thunderstorm wind. Local standard time, as filed.
Emergency management officials reported a tree branch down onto a roof. Unknown how much damage was done to the roof.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2019Every state in 2019This day in weather historyWarnings in Ohio, September 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 851303.