Another multicell day with short-lived but intense cores due to moderate instability/low shear. Outflow interactions dominated the evolution once again.
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.
Another multicell day with short-lived but intense cores due to moderate instability/low shear. Outflow interactions dominated the evolution once again. Storms seemed to focus south of Route 6, possibly due to effects from outflow boundary that settled across the area the night before.
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 Jul 8, 3:05 PM EST, 36 minutes earlier.
Area Forecast Discussion
National Weather Service Northern Indiana
405 PM EDT Wed Jul 8 2020
.SYNOPSIS...
Issued at 523 AM EDT Wed Jul 8 2020
Showers and thunderstorms will persist until after sunset. A few
storms could become strong to severe with damaging wind gusts and
torrential rainfall being the primary hazard. Heat Index values
increase around the century mark tomorrow afternoon for northwest
Ohio and eastern Indiana while the remainder of the area holds in
the mid to upper 90s. Another round of thunderstorms are expected
on Thursday and again late Thursday night through Friday. A few
of the storms could be strong, with gusty winds and heavy rain the
primary threats.
&&
.SHORT TERM...(This Evening through Thursday)
Issued at 356 PM EDT Wed Jul 8 2020
Scattered showers and thunderstorms have developed once again across
the area as temperatures/heat index values reach into the mid to
upper 90s. Much like yesterday, deep layer shear is very weak with
strong instability in the 1500 - 2500 J/kg range. Storm organization
is not anticipated given the weak shear, but storms will be able to
pulse into the strong to marginally severe category. DCAPE across
the area of 1000 - 1500 J/kg, will sustain the chance for storms to
produce localized downbursts as cores collapse. Locally heavy
rainfall, briefly torrential, is expected for locations where storms
move over. Should see storms wain after sunset, but a stalled
shortwave just SW of the forecast area could cause an isolated storm
to develop during the overnight hours. CAMs do generate a few storms
overnight, but the location is different between the various models.
Will broad brush an isolated mention of storms after 06z to account
for this chance, but confidence is low. Other than this chance for a
storm, overnight lows should drop into the lower 70s.
Thursday will see the stalled shortwave over IL lift northeastwards
over the course of the day in response to a stronger low propagating
eastwards from the northern Plains/upper Midwest. This could help
initiate a greater coverage of convection during the daytime hours.
There is some uncertainty as to how much upper support this
shortwave will provide given that it will start to be ingested by
the western low as we approach peak heating. Will keep POPs in the
40 to 50 percent range with this issuance given that there will be
more upper support than on previous days. Shear will be a little
better, but still around 15kt. The combination of instability and
weak upper support could allow for thunderstorms to become strong to
marginally severe. Primary hazard with these storms will be strong
to damaging winds, hail up to 1 inch, and locally heavy rainfall.
Looking at the heat concern, will go with a Heat Advisory for NW
OH and portions of NE IN where heat index values are 98 to 100
degrees. Will continue the SPS for the remainder of the area, as
there is greater concern with cloud cover preventing temps from
warming sufficiently to hold heat index values in that range.
&&
.LONG TERM...(Thursday Night through Wednesday)
Issued at 356 PM EDT Wed Jul 8 2020
A brief decrease in convective area is possible Thursday night prior
to midnight before the eastward progressing low mentioned above
pushes into the forecast area. This will allow convection to spread
across the area over the remainder of the overnight hours and
daytime Friday. The increased cloud cover and widespread precip
should help to keep afternoon high temperatures in the 80s. This
should also help to limit instability and storm strength despite
better shear. As such, severe weather is not anticipated at this
time. Still some differences between models concerning end timing,
but think storms should start to diminish after sunset Friday.
Another round of showers and thunderstorms possible Saturday and
Sunday as the upper low (now east of the area) begins to stall. Have
stayed slower to the ECMWF for this time frame and beyond as it has
been the most consistent with the upper pattern evolution for
several days. This results in dry conditions returning for next week
with a gradual warming trends as an upper ridge builds back over the
forecast area.
&&
.AVIATION...(For the 18Z TAFS through 18Z Thursday Afternoon)
Issued at 1255 PM EDT Wed Jul 8 2020
Weak front and diurnal heating will combine to once again pop
widely scattered thunderstorms this afternoon across northern IN.
Better chances appear to be at KFWA mid-late afternoon where a
tempo -tsra group was retained. Brief higher wind gusts and VIS
restriction are the main threats with any convection. Light winds
and VFR otherwise in stagnant pattern, with some potential for
shallow BR formation toward daybreak tomorrow.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...Heat Advisory from 11 AM to 9 PM EDT Thursday for INZ009-017-018-
023>027-032>034.
MI...NONE.
OH...Heat Advisory from 11 AM to 9 PM EDT Thursday for OHZ001-002-004-
005-015-016-024-025.
LM...NONE.
&&
SYNOPSIS...MCD/CM
SHORT TERM...CM
LONG TERM...CM
AVIATION...Steinwedel
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www.youtube.com/NWSNorthernIndianaHazardous Weather Outlook National Weather Service Northern Indiana 408 PM EDT Wed Jul 8 2020 INZ003>008-012>016-020-022-MIZ077>081-092015- La Porte-St. Joseph IN-Elkhart-Lagrange-Steuben-Noble-Starke-Pulaski- Marshall-Fulton IN-Kosciusko-White-Cass IN-Berrien-Cass MI- St. Joseph MI-Branch-Hillsdale- 408 PM EDT Wed Jul 8 2020 /308 PM CDT Wed Jul 8 2020/ This Hazardous Weather Outlook is for northern Indiana and southwest Michigan. .DAY ONE...This afternoon and tonight. Showers and thunderstorms are expected through sunset this evening. A few of the storms could be strong to marginally severe, with gusty winds and heavy rain the primary threats. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Maximum afternoon heat index values on Thursday will range in the mid to upper 90s. Friday will be slightly cooler, with heat indices in the low to mid 90s. There are chances for showers and thunderstorms through Sunday, especially in the afternoon and evening hours. The best chances will be Thursday afternoon into Friday evening. A few storms could be strong, with with gusty winds and heavy rain the primary threats. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. INZ009-017-018-023>027-032>034-OHZ001-002-004-005-015-016-024-025- 092015- De Kalb-Whitley-Allen IN-Miami-Wabash-Huntington-Wells-Adams-Grant- Blackford-Jay-Williams-Fulton OH-Defiance-Henry-Paulding-Putnam- Van Wert-Allen OH- 408 PM EDT Wed Jul 8 2020 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 9 PM EDT THURSDAY... This Hazardous Weather Outlook is for northern Indiana and northwest Ohio. .DAY ONE...This afternoon and tonight. Showers and thunderstorms are expected through sunset this evening. A few of the storms could be strong to marginally severe, with gusty winds and heavy rain the primary threats. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Maximum afternoon heat index values on Thursday will range from 98 to 101 degrees. Friday will be slightly cooler, with heat indices in the low to mid 90s. There are chances for showers and thunderstorms through Sunday, especially in the afternoon and evening hours. The best chances will be Thursday afternoon into Friday evening. A few storms could be strong, with with gusty winds and heavy rain the primary threats. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. LMZ043-046-092015- New Buffalo MI to St Joseph MI-Michigan City IN to New Buffalo MI- 408 PM EDT Wed Jul 8 2020 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. There are low chances for showers and thunderstorms Thursday into Friday night. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
359 PM EDT WED JUL 8 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0353 PM TSTM WND GST 2 ENE NINE MILE 40.98N 85.18W
07/08/2020 M67 MPH ALLEN IN ASOS
ASOS STATION KFWA FORT WAYNE INTERNATIONAL
AP.
&&Special Weather Statement
National Weather Service Northern Indiana
414 PM EDT Wed Jul 8 2020
INZ022>024-032-082115-
Miami-Wabash-Cass-Grant-
414 PM EDT Wed Jul 8 2020
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN WABASH...
NORTHWESTERN GRANT...SOUTHEASTERN CASS AND SOUTHERN MIAMI COUNTIES...
At 413 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near La Fontaine to 10 miles east of
Delphi. Movement was south at 10 mph.
Winds in excess of 40 mph and half inch hail are possible with these
storms.
Locations impacted include...
Marion, Peru, Wabash, Grissom Afb, Sweetser, Walton, Bunker Hill, La
Fontaine, Lincoln, Wells, Galveston, Miami, Converse, Amboy, Onward,
Richvalley, Bennetts Switch, Mier, Wawpecong and Peoria.
Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.
Seek shelter until these storms pass.
&&
LAT...LON 4057 8587 4056 8636 4056 8637 4069 8637
4069 8648 4084 8567 4074 8564 4065 8564
4065 8561 4057 8558 4055 8586
TIME...MOT...LOC 2013Z 340DEG 10KT 4074 8571 4060 8647
HAIL...0.50IN
WIND...40MPH
MARSILIPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
420 PM EDT WED JUL 8 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0357 PM TSTM WND GST 1 SE HUNTINGTON 40.87N 85.49W
07/08/2020 E50 MPH HUNTINGTON IN EMERGENCY MNGR
REPORTED ON SOUTH SIDE OF HUNTINGTON. TIME
ESTIMATED FROM RADAR.
&&
LWFSpecial Weather Statement
National Weather Service Northern Indiana
420 PM EDT Wed Jul 8 2020
OHZ001-004-082100-
Defiance-Williams-
420 PM EDT Wed Jul 8 2020
...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL DEFIANCE AND
SOUTHEASTERN WILLIAMS COUNTIES...
At 420 PM EDT, a strong thunderstorm was located over Bryan. The
storm is nearly stationary.
Winds in excess of 40 mph and pea size hail are possible with this
storm.
Locations impacted include...
Bryan, Montpelier, Stryker, Holiday City, West Jefferson, Pulaski,
Ney, Hallock, Williams Center and Melbern.
This includes Interstate 80 in Ohio between mile markers 11 and 15.
Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4135 8459 4149 8473 4166 8457 4147 8434
4146 8434
TIME...MOT...LOC 2020Z 228DEG 4KT 4147 8460
HAIL...0.25IN
WIND...40MPH
MARSILISpecial Weather Statement National Weather Service Northern Indiana 431 PM EDT Wed Jul 8 2020 INZ024>026-032-082130- Wabash-Huntington-Wells-Grant- 431 PM EDT Wed Jul 8 2020 ...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHEASTERN WABASH... NORTHEASTERN GRANT...SOUTHERN HUNTINGTON AND CENTRAL WELLS COUNTIES... At 431 PM EDT, radar indicated strong thunderstorms were located along a line extending from near Ossian to near La Fontaine. Movement was southeast at 10 mph. Wind gusts up to 50 mph and pea size hail are possible with these storms. Locations impacted include... Marion, Huntington, Wabash, Bluffton, Markle, La Fontaine, Van Buren, Warren, Lancaster, Uniondale, Mount Etna, Landess, Murray, Liberty Center, Buckeye, Majenica, Banquo, Pleasant Plain, Travisville and Servia. This includes Interstate 69 in Indiana between mile markers 268 and 290. Torrential rainfall is also occurring with these storms, and may cause localized flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 4071 8511 4056 8569 4081 8584 4090 8523 TIME...MOT...LOC 2031Z 316DEG 10KT 4084 8524 4072 8579 HAIL...0.25IN WIND...50MPH MARSILI
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
435 PM EDT WED JUL 8 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0420 PM FLOOD 3 NE ROLLING HILLS 41.06N 85.22W
07/08/2020 ALLEN IN AMATEUR RADIO
WATER REPORTED OVER THE CURB, 6 TO 8 INCHES
DEEP, ON COVINGTON ROAD BETWEEN JEFFERSON
BLVD AND GETZ RD. TRAFFIC MOVING SLOW IN THE
AREA.
&&
LWFThe Northern Indiana radar (KIWX), 117 km away, was scanning. The volume nearest the first event began at 20:41 UTC.
1 thunderstorm wind. Local standard time, as filed.
EM reported power poles leaning and greenhouse roof taken off. Time estimated from radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2020Every state in 2020This day in weather historyWarnings in Ohio, July 2020
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: 908516.