What forecasters said that day
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 Chicago, IL wrote its last area forecast discussion before the first event at Jul 26, 1:35 PM CST, 2 hours 40 minutes earlier. Its key messages:
- Scattered thunderstorms (50-70% chance) mainly south of I-80 through this evening. Locally strong/severe (level 1 out of 5).
- Torrential rain and possible flooding through tonight for areas mainly south of the Illinois and Kankakee Rivers.
- Dangerous heat and humidity Monday.
- Periods of thunderstorms Tuesday into Wednesday, possibly strong/severe along with torrential rain and possible flash flooding.
- Dangerous swimming conditions at Lake Michigan beaches Wednesday into Thursday.
Area forecast discussion, Jul 26, 1:35 PM CST, 2 hours 40 minutes before
Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
235 PM CDT Sat Jul 26 2025
.KEY MESSAGES...
- Scattered thunderstorms (50-70% chance) mainly south of I-80
through this evening. Locally strong/severe (level 1 out of
5).
- Torrential rain and possible flooding through tonight for
areas mainly south of the Illinois and Kankakee Rivers.
- Dangerous heat and humidity Monday.
- Periods of thunderstorms Tuesday into Wednesday, possibly
strong/severe along with torrential rain and possible flash
flooding.
- Dangerous swimming conditions at Lake Michigan beaches
Wednesday into Thursday.
&&
.DISCUSSION...
Issued at 235 PM CDT Sat Jul 26 2025
Through Sunday Night:
The primary forecast concern is thunderstorm coverage/location
and the impact to the current flood watch. The bulk of
additional thunderstorms this afternoon into this evening are
expected to remain south of Interstate 80 and may end up mainly
south of the Kankakee River. Confidence is increasing that any
heavy rain and localized flash flooding, if any occurs, will be
south of the current flood watch area and have cancelled the
watch. Its possible a new flood watch may be needed for the far
southern cwa this evening, but confidence is too low for a new
watch at this time. Scattered thunderstorms continue to develop
across northern MO into west central IL and this activity will
continue to move east/northeast this afternoon into this
evening. If this activity were to train over the same areas,
then flooding would be the concern. Current trends suggest that
if this does materialize, it would be across the far southern
cwa, across central IL and central IN.
Main severe threat (level 1 out of 5) with any storms through
this evening will be locally damaging wind but all of these
storms are rotating and with the very moist low levels, there
remains a low potential for a possible tornado. Again this would
be south of I-80 and more likely across the southern third or
so of the cwa.
Depending on where these thunderstorms track later this evening,
they may continue into the overnight hours across the far
southern cwa, but the overall trend should be for these to
gradually shift southeast and eventually out of the local area.
Confidence is also increasing that Sunday will now be mainly dry
for most of the area with little support for thunderstorm
development. If anything develops, the best chance would be
across the far southern cwa and maintained slight chance pops
across this area but later forecasts may be able to go dry for
the entire area.
Much of Sunday night is expected to be dry. However, there is a
consensus among guidance for a possible thunderstorm complex
moving southeast from MN/WI into northeast IA/northwest IL early
Monday morning, perhaps around daybreak. Low confidence for this
possibility, but opted to include low chance pops across the far
northwest cwa for now and trends will need to be monitored with
later forecasts.
With the expectation that Sunday will be dry with at least
partly cloudy skies by afternoon, high temps in the upper 80s to
around 90 look on track. Dewpoints generally in the mid 70s,
perhaps a little higher in the rural areas, maybe slightly lower
in the urban areas. This would yield peak heat indices generally
in the 95 to 100 range and not planning any heat headlines for
Sunday.
Finally, with the light winds, very moist low levels and a weak
frontal boundary sagging into the northern cwa, fog will be a
concern overnight into early Sunday morning and have added fog
to the forecast for the north and northwest cwa. Some dense fog
is possible but confidence is too low to mention dense fog for
now. cms
Monday through Saturday:
Early Monday, a low amplitude upper wave will track nearby
around the northern periphery of the upper high centered over
the Gulf coast. At the surface, a counterpart cold front is
expected to get hung up to our north while the rest of the wave
comes and goes through the morning. The departing upper wave
will steal a lot of layer moisture away from the region
following the morning. Some convection may linger from Sunday
night while these features remain more congealed. For more on
the precip chances through early Monday, see the short term
discussion above. Plentiful moisture will remain at the surface
leading to a highly unstable and largely uncapped midday
airmass. Conceptually, this could lead to instances of free
convection during the day, although few pieces of guidance
resolve any precip on Monday beyond the morning likely due to a
lack of forcing mechanisms. So the forecast was kept dry Monday
afternoon/evening for the time being.
Following what will likely be an uncomfortably warm Sunday,
even more sweltering heat is expected on Monday, although there
are uncertainties. The footprint of the upper high will expand
across much of the Plains and Midwest late Sunday into Monday
keeping the hot airmass pumping into the region. Highs Monday
afternoon are expected to be in the lower to middle 90s,
including along the lakeshore. When coupled with dewpoints
forecast in the upper 70s to near 80 degrees, we could be
looking at afternoon heat indices between 105 and 110, possibly
even nearing 115 in spots. It's not well understood yet how
morning convection and lingering cloud cover will influence
daytime heating, and any activity that brews later in the day
would also play a role. But for now, it looks as though we're
headed for heat headlines to kick off the work week.
Even more uncertainties loom for Tuesday as that cold front is
expected to move across the CWA sometime Tuesday-Tuesday night.
Model camps have differing opinions on the timing of FroPa and
the magnitude of cooling in its wake. Generally, Tuesday should
be another cooker around the area with afternoon heat indices
again nearing or exceeding 100 degrees. A lake breeze looks to
move onshore which would keep communities near and downwind of
the lake noticeably cooler, but a couple pieces of guidance do
suggest offshore flow throughout the day until that front drops
through which would offer little to no relief near the lake. The
front meandering about the area will provide low chances for
scattered showers and storms on Tuesday.
Tuesday night into Wednesday, the upper high will break and
give way to a large upper trough swinging across the Great Lakes
and another upper high forming over the High Plains. This will
allow for more comfortable temperatures on Wednesday with highs
forecast in the lower and middle 80s. With the relatively moist
zonal flow and ambient forcing around the nearby jet, there is a
signal for a wave or two of precip to move through the region
Tuesday night through Wednesday. Surface high pressure situating
over the Great Lakes will keep the more temperate conditions
around during the back half of the week with the high looking to
steer most precip systems away from the local area.
Doom
Increasing north/northeast winds Wednesday afternoon into
Wednesday night, possibly gusting to 30 mph will lead to high
waves and dangerous swimming conditions at Lake Michigan
beaches. These northerly winds may continue through Friday
leading to uncertainty for when the dangerous swimming
conditions may end. cms
&&
.AVIATION /18Z TAFS THROUGH 00Z MONDAY/...
Issued at 1251 PM CDT Sat Jul 26 2025
The main concerns for the 18Z TAF period include:
* A low (near or less than 30%) chance for thunderstorms this
afternoon at the Chicagoland terminals
* A period of fog overnight into early Sunday, mainly west of
Chicago
Widely scattered showers will continue to move across the area
through the afternoon. Thunderstorms are expected to develop
this afternoon. Best guess is that these will just miss the
Chicagoland sites to the south and east, although there remains
a chance during the earlier half of the afternoon. Potential is
greatest at GYY, and greater at MDW than at ORD or DPA. Not
expecting thunder at RFD through tonight.
Fog looks to develop around much of northern IL late tonight
and last into early Sunday. The biggest fog concerns lie west of
the city and especially out toward RFD where a period of IFR
vsbys may ensue. There also exists a signal for a brief period
of MVFR cigs overnight, including at Chicago, and again during
the morning hours of Sunday. Potential looked too low at this
time to include in the TAF.
Meanwhile, SSW less than 10 kt may go light and variable
overnight. Winds at the start of Sunday will be out of the NW,
veering to easterly late in the morning while remaining below 10
kt.
Doom
&&
.LOT WATCHES/WARNINGS/ADVISORIES...
IL...None.
IN...None.
LM...None.
&&
Visit us at weather.gov/chicago
Hazardous weather outlook, Jul 26, 2:08 PM CST, 2 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
308 PM CDT Sat Jul 26 2025
ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-272015-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
308 PM CDT Sat Jul 26 2025 /408 PM EDT Sat Jul 26 2025/
This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.
.DAY ONE...Tonight.
Weather hazards expected...
Elevated Thunderstorm Risk...with an associated:
Level 1 of 5 Tornado Risk.
Level 1 of 5 Damaging Wind Risk...up to 60 mph.
Limited Flooding Risk.
Limited Fog Risk.
DISCUSSION...
Scattered thunderstorms are expected through this evening, mainly
south of Interstate 80. The strongest storms will be capable of
producing damaging wind gusts. A tornado or two will also possible.
Torrential rain will also accompany these thunderstorms, leading
to possible localized flash flooding, mainly for areas south of
Interstate 80.
Areas of fog are expected across northern and northwest Illinois
late tonight.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Sunday...
Limited Thunderstorm Risk...with an associated:
Level 1 of 5 Severe Thunderstorm Risk late Sunday Night.
Limited Excessive Heat Risk.
Limited Fog Risk early in the morning.
Monday...
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk.
Tuesday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
Elevated Excessive Heat Risk.
Wednesday...
Limited Flooding Risk.
Limited Thunderstorm Risk.
High Swim Risk Lake Michigan Beaches.
Thursday...
High Swim Risk Lake Michigan Beaches.
DISCUSSION...
Dangerous heat and humidity is possible Monday.
There is a chance of thunderstorms Monday morning. Some of these
storms could be strong to severe especially across northwest
Illinois.
Periods of thunderstorms are possible Tuesday through Wednesday.
Some of these thunderstorms could be strong to severe and may also
produce torrential rain which may lead to localized flash flooding.
High waves and dangerous swimming conditions are possible Wednesday
through Thursday at Lake Michigan beaches.
.SPOTTER INFORMATION STATEMENT...
Spotters may be needed through this evening.
GENERAL STORM MOTION OF THE DAY:
Moving toward the northeast at 30 mph.
LMZ740>745-272015-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
Burns Harbor to Michigan City IN-
308 PM CDT Sat Jul 26 2025
This Hazardous Weather Outlook is for portions of the Illinois
nearshore waters of Lake Michigan and the Indiana nearshore
waters of Lake Michigan.
.DAY ONE...Tonight.
Weather hazards expected...
Limited Thunderstorm Risk.
.DAYS TWO THROUGH SEVEN...Sunday through Friday.
Tuesday...
Limited Thunderstorm Risk.
Wednesday...
Hazardous conditions for small craft are likely.
Limited Thunderstorm Risk.
Thursday...
Hazardous conditions for small craft are likely.
Visit us at www.weather.gov/chicagoIn the hours before
Local storm report, Jul 26, 1:26 PM CST, 2 hours 49 minutes before
Preliminary Local Storm Report
National Weather Service Chicago IL
226 PM CDT Sat Jul 26 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1121 AM Flood 1 NE Crown Point 41.43N 87.34W
07/26/2025 Lake IN Law Enforcement
Report of localized flooding in Crown Point.
One car disabled in high water in the 1200
block of Arrowhead Court.
1158 AM Flood 2 E Valparaiso 41.47N 87.03W
07/26/2025 Porter IN Trained Spotter
Multiple streets in Valparaiso flooded with
a few inches of water.
1228 PM Flood 5 NNE Shelby 41.26N 87.30W
07/26/2025 Lake IN Dept of Highways
Left lane of northbound I-65 slowed due to
flooding.
&&Local storm report, Jul 26, 2:03 PM CST, 2 hours 12 minutes before
Preliminary Local Storm Report
National Weather Service Chicago IL
303 PM CDT Sat Jul 26 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1030 PM Flood 3 ESE New Milford 42.15N 89.01W
07/25/2025 Winnebago IL Public
Public report of water running over Edson
Road north of Monroe Center.
1040 PM Flash Flood Hillcrest 41.95N 89.08W
07/25/2025 Ogle IL Public
Multiple public reports of home and basement
flooding in Hillcrest and on the north side
of Rochelle. Fields at Rochelle Township
High School were flooded, and the Kyte River
overflowed its banks.
1050 PM Flash Flood 4 SSW Lindenwood 42.01N 89.07W
07/25/2025 Ogle IL 911 Call Center
Multiple reports of flooding on IL routes 64
and 251. Route 64 was flooded in multiple
spots between Skare Road and I-39, and
ditches along the road became full of water.
A video was also shared on social media
showing a few inches of water on Route 251
near Route 64. The first report of flooding
was received at around 10:50 PM, and
flooding persisted for at least two hours.
&&Local storm report, Jul 26, 2:19 PM CST, 1 hour 56 minutes before
Preliminary Local Storm Report
National Weather Service Chicago IL
319 PM CDT Sat Jul 26 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0320 PM Flash Flood 1 E Stone Park 41.91N 87.87W
07/24/2025 Cook IL Public
Photos shared on social media showing two
cars submerged halfway underwater in an
underpass on North Avenue in Melrose Park.
&&
ROLocal storm report, Jul 26, 2:21 PM CST, 1 hour 54 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Chicago IL
321 PM CDT Sat Jul 26 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0224 PM Tstm Wnd Dmg 1 N Oswego 41.69N 88.35W
07/24/2025 Kendall IL Trained Spotter
Large tree branches and limbs downed in
Oswego. Time estimated from radar.
0224 PM Tstm Wnd Dmg Millbrook 41.60N 88.56W
07/24/2025 Kendall IL Public
Videos show two downed trees in Millbrook.
Time estimated from radar.
0225 PM Tstm Wnd Dmg 1 E Montgomery 41.73N 88.32W
07/24/2025 Kane IL Emergency Mngr
Numerous wires down.
0226 PM Tstm Wnd Dmg Montgomery 41.73N 88.34W
07/24/2025 Kane IL Public
Photo shared of a downed large tree limb
that crushed the hood of a sedan. Time
estimated from radar.
0226 PM Tstm Wnd Gst 2 WSW Montgomery 41.72N 88.38W
07/24/2025 E60 MPH Kane IL Trained Spotter
0228 PM Tstm Wnd Dmg 2 ESE Aurora 41.75N 88.28W
07/24/2025 Kane IL Emergency Mngr
Multiple reports of trees and wires downed
across Aurora.
0228 PM Tstm Wnd Dmg 1 ENE North Aurora 41.82N 88.31W
07/24/2025 Kane IL Law Enforcement
Multiple trees downed on the east side of
North Aurora. Time estimated from radar.
0228 PM Tstm Wnd Dmg 2 ESE North Aurora 41.79N 88.30W
07/24/2025 Kane IL Emergency Mngr
Tree downed onto a house. Time estimated
from radar.
0235 PM Tstm Wnd Dmg 1 S Yorkville 41.63N 88.45W
07/24/2025 Kendall IL Public
Updates previous tstm wnd dmg report from 1
S Yorkville. Multiple public reports of
downed trees on the south side of Yorkville.
Time estimated from radar.
0237 PM Tstm Wnd Dmg 1 S Naperville 41.75N 88.15W
07/24/2025 DuPage IL Public
Multiple public reports of downed trees and
large tree limbs on the south side of
Naperville. Time estimated from radar.
0238 PM Tstm Wnd Dmg 3 WNW Bolingbrook 41.73N 88.12W
07/24/2025 Will IL NWS Employee
Photo showed a large oak tree down in front
yard.
0238 PM Tstm Wnd Dmg 2 ESE Naperville 41.76N 88.11W
07/24/2025 DuPage IL NWS Employee
Trees and wires down near Naper Blvd and
Collingwood Drive.
0238 PM Tstm Wnd Dmg 1 NNW Naperville 41.78N 88.15W
07/24/2025 DuPage IL Public
Numerous trees and wires down in the
vicinity. Relayed via the city of
Naperville.
0240 PM Flood 3 SSE Naperville 41.74N 88.12W
07/24/2025 DuPage IL NWS Employee
Several inches of standing water along and
near Naper Boulevard.
0243 PM Tstm Wnd Dmg 3 NW Romeoville 41.68N 88.13W
07/24/2025 Will IL NWS Employee
Power poles snapped.
0244 PM Tstm Wnd Dmg 1 SE Woodridge 41.75N 88.04W
07/24/2025 DuPage IL Law Enforcement
Power lines and large tree branches downed
in Woodridge. Damage to gutters and siding
reported as well.
0244 PM Tstm Wnd Dmg Woodridge 41.76N 88.04W
07/24/2025 DuPage IL NWS Employee
Estimated 65 mph wind gusts. Numerous 3 to 6
inch diameter tree limbs down.
0244 PM Tstm Wnd Dmg 2 SSE Bolingbrook 41.67N 88.06W
07/24/2025 Will IL Emergency Mngr
Corrects and combines previous tstm wnd dmg
reports from 2 SSE Bolingbrook. A large,
rotting tree was snapped a few feet up at
the White Fence Farm Restaurant, landing on
a fence and onto Joliet Road. Another nearby
tree also had a large limb snapped off. Time
estimated from radar.
0244 PM Tstm Wnd Dmg 1 E Bolingbrook 41.70N 88.05W
07/24/2025 Will IL Public
Tree branch greater than 6 inches in
diameter downed in a front yard on North
Pinecrest Road. Time estimated from radar.
0245 PM Tstm Wnd Dmg 2 SW Darien 41.73N 88.01W
07/24/2025 DuPage IL Amateur Radio
12 inch diameter tree limb downed at
Oldfield Road and Lemont Road.
0245 PM Tstm Wnd Dmg Lemont 41.67N 88.00W
07/24/2025 Cook IL Emergency Mngr
Wires down and tree down in the road.
0246 PM Tstm Wnd Dmg 1 S Lisle 41.79N 88.07W
07/24/2025 DuPage IL Public
Video received showing numerous tree
branches of various sizes down near the
intersection of Short Street and Main Street
in Lisle.
0246 PM Tstm Wnd Gst 1 SE Lisle 41.79N 88.07W
07/24/2025 E80 MPH DuPage IL NWS Employee
Based on an NWS damage survey, a microburst
with peak wind estimated near 80 mph started
near Lisle High School at the intersection
of Ohio Court and Short streets, and
continued eastward along Riedy Road, ending
near Interstate 355. Damage within the path
consisted of downed and uprooted trees,
including several that fell on homes. One
tree branch struck and broke a window at a
house on Short Street, while others fell on
fences and at least one porch near the
intersection of Riedy Road and Kingston
Avenue. All damage was downed facing the
northeasterly direction, and aligned with a
signature of straight line winds indicated
by terminal Doppler radar.
0246 PM Tstm Wnd Dmg 1 E Downers Grove 41.79N 88.00W
07/24/2025 DuPage IL Trained Spotter
Photo shared of a large tree limb snapped.
Time estimated from radar.
0248 PM Tstm Wnd Dmg 1 N Darien 41.76N 87.97W
07/24/2025 DuPage IL Local Official
Photo shared of rotted tree downed onto
street. Time estimated from radar.
0248 PM Tstm Wnd Dmg Westmont 41.79N 87.98W
07/24/2025 DuPage IL Public
Photo shared on social media showing a
downed tree in Westmont. Time estimated from
radar.
0249 PM Tstm Wnd Dmg 1 WNW Willowbrook 41.77N 87.95W
07/24/2025 DuPage IL Public
Photo shared on social media of
approximately 3 inch diameter tree branches
downed at Route 83 and 63rd Street. Time
estimated from radar.
0252 PM Tstm Wnd Dmg Hinsdale 41.80N 87.93W
07/24/2025 DuPage IL Public
Photos submitted of trees with large
branches snapped. Time estimated by radar.
0252 PM Tstm Wnd Dmg Indian Head Park 41.77N 87.90W
07/24/2025 Cook IL Public
Photo shared on social media of a large tree
limb snapped in Indian Head Park. Time
estimated from radar.
0254 PM Tstm Wnd Dmg 1 SE La Grange 41.80N 87.86W
07/24/2025 Cook IL Public
One foot diameter tree limb down onto a
power line.
0254 PM Tstm Wnd Dmg 1 NW Countryside 41.79N 87.89W
07/24/2025 Cook IL Public
Large tree branches downed.
0255 PM Tstm Wnd Dmg 1 WNW Justice 41.75N 87.85W
07/24/2025 Cook IL Public
Photo shared on social media showing a large
tree limb downed onto a mobile home in
Justice, caving its roof in by about a foot.
Trees and power lines were downed elsewhere
in Justice. Time estimated from radar.
0255 PM Tstm Wnd Dmg La Grange 41.81N 87.87W
07/24/2025 Cook IL Public
Multiple reports of large tree limbs downed
in La Grange. Time estimated from radar.
0255 PM Tstm Wnd Dmg 1 SE Burr Ridge 41.74N 87.89W
07/24/2025 Cook IL Public
Tree blown down. Time estimated from radar.
0256 PM Tstm Wnd Dmg Brookfield 41.82N 87.85W
07/24/2025 Cook IL Public
Photo shared on social media showing a tree
downed onto a road in Brookfield. Time
estimated from radar.
0258 PM Tstm Wnd Dmg Bridgeview 41.75N 87.80W
07/24/2025 Cook IL Public
Photo shared on social media of tree downed
onto wires in Bridgeview. Time estimated
from radar.
0258 PM Tstm Wnd Dmg Berwyn 41.84N 87.79W
07/24/2025 Cook IL Public
Multiple 12 inch diameter trees snapped.
0258 PM Tstm Wnd Dmg 1 SE Riverside 41.82N 87.81W
07/24/2025 Cook IL Broadcast Media
Corrects time of previous tstm wnd dmg
report from 1 SE Riverside. Local broadcast
media reports that a brick wall partially
collapsed on a building near the
intersection of Ogden Ave and Powell Ave in
Lyons. No injuries were reported.
0259 PM Tstm Wnd Dmg Stickney 41.82N 87.79W
07/24/2025 Cook IL Public
Photo shared on social media showing a large
tree limb downed in Stickney. Time estimated
from radar.
0259 PM Tstm Wnd Dmg 2 S Berwyn 41.83N 87.79W
07/24/2025 Cook IL Broadcast Media
Power lines next to a BP gas station were
downed, causing two main gas lines to
ignite. The resulting fire spread to a
nearby tree before the gas lines eventually
exploded. The explosion caused the adjacent
gas station building to collapse and also
shattered the windows of nearby residences
and businesses.
0300 PM Tstm Wnd Dmg 1 ENE Morgan Park - Chi 41.70N 87.65W
07/24/2025 Cook IL Broadcast Media
*** 1 INJ ***
Corrects previous report from 1 ENE Morgan
Park - Chicago. Local broadcast media
reports that a person suffered minor
injuries after a large tree fell on their
house near 109th and Throop streets in the
Morgan Park neighborhood of Chicago.
0300 PM Tstm Wnd Gst 1 W Oak Lawn 41.72N 87.77W
07/24/2025 M72 MPH Cook IL Public
0300 PM Tstm Wnd Dmg Burbank 41.75N 87.77W
07/24/2025 Cook IL Public
Tree downed onto a garage in Burbank.
0300 PM Tstm Wnd Gst 3.0 SW Midway Airport 41.74N 87.78W
07/24/2025 M70 MPH Cook IL CO-OP Observer
0301 PM Tstm Wnd Dmg 1 N Oak Lawn 41.73N 87.75W
07/24/2025 Cook IL Public
Multiple public reports of downed trees on
the north side of Oak Lawn. Time estimated
from radar.
0301 PM Tstm Wnd Gst Oak Lawn 41.72N 87.75W
07/24/2025 M68 MPH Cook IL Public
2 inch diameter tree limbs also broken.
0302 PM Tstm Wnd Gst Midway Airport 41.79N 87.76W
07/24/2025 M64 MPH Cook IL ASOS
Measured at the Midway ASOS.
0303 PM Tstm Wnd Dmg South Lawndale - Chicag 41.84N 87.72W
07/24/2025 Cook IL Public
Photo shared on social media showing a large
tree limb downed onto Lawndale Avenue near
31st Street in the Little Village
neighborhood of Chicago. Time estimated from
radar.
0304 PM Tstm Wnd Dmg 1 ESE Chicago Lawn 41.76N 87.67W
07/24/2025 Cook IL Broadcast Media
Tree down on house.
0305 PM Tstm Wnd Dmg 1 NW Lakeview - Chicago 41.95N 87.66W
07/24/2025 Cook IL Public
Photo shared on social media showing a tree
downed onto a street in the Lakeview
community area of Chicago. Time estimated
from radar.
0308 PM Tstm Wnd Gst 1 NE Montrose Harbor 41.97N 87.63W
07/24/2025 M59 MPH LMZ741 IL Mesonet
Peak gust at the Montrose Beach Light.
0310 PM Tstm Wnd Dmg 1 WSW Plainfield 41.60N 88.22W
07/24/2025 Will IL Public
Multiple public reports of downed trees and
large tree limbs in Plainfield. Time
estimated from radar.
0312 PM Tstm Wnd Gst 1 SSE Hyde Park - Chica 41.79N 87.59W
07/24/2025 M68 MPH Cook IL Public
Measured at a personal weather station.
0312 PM Tstm Wnd Gst 1 WSW Northerly Island 41.86N 87.62W
07/24/2025 M56 MPH Cook IL Mesonet
Measured on a personal weather station.
0320 PM Flash Flood 1 E Stone Park 41.91N 87.87W
07/24/2025 Cook IL Public
Photos shared on social media showing two
cars submerged halfway underwater in an
underpass on North Avenue in Melrose Park.
0320 PM Flood Melrose Park 41.90N 87.86W
07/24/2025 Cook IL Public
Photo shared on social media showing several
inches of standing water on a street in
Melrose Park. A separate report of minor
basement flooding was also received from
Melrose Park.
0321 PM Tstm Wnd Dmg Morris 41.36N 88.42W
07/24/2025 Grundy IL Public
Multiple public reports of downed trees and
large tree limbs in and near Morris. Time
estimated from radar.
0322 PM Marine Tstm Wind 3 NE Navy Pier 41.92N 87.57W
07/24/2025 M51 MPH LMZ741 IL C-Man Station
Measured at the Harrison-Dever Crib.
0325 PM Tstm Wnd Dmg 1 SW Crystal Lawns 41.56N 88.17W
07/24/2025 Will IL Public
Multiple public reports of downed trees and
large tree limbs on the northwest side of
Joliet. Time estimated from radar.
0326 PM Tstm Wnd Dmg 1 SW Crystal Lawns 41.56N 88.16W
07/24/2025 Will IL Public
Fence partially blown down and two fence
posts snapped.
0334 PM Tstm Wnd Gst Gary Airport 41.61N 87.41W
07/24/2025 M63 MPH Lake IN AWOS
GYY AWOS.
0355 PM Tstm Wnd Dmg 1 SW Channahon 41.42N 88.25W
07/24/2025 Will IL Public
Photo shared on social media showing a
snapped tree in Channahon. Time estimated
from radar.
0358 PM Marine Tstm Wind 3 NE Beverly Shores 41.72N 86.94W
07/24/2025 M56 MPH LMZ745 IN C-Man Station
Measured at the Michigan City GLERL site.
0400 PM Tstm Wnd Gst 1 WSW Beverly Shores 41.69N 86.99W
07/24/2025 M58 MPH Porter IN Mesonet
Measured on a personal weather station.
0400 PM Tstm Wnd Dmg Minooka 41.46N 88.26W
07/24/2025 Grundy IL Public
Photo shared on social media showing a large
tree limb downed onto a house in Minooka.
Another photo was shared showing a snapped
tree elsewhere in Minooka. Time estimated
from radar.
0503 PM Tstm Wnd Dmg Dwight 41.09N 88.43W
07/24/2025 Livingston IL Public
Photo shared on social media showing a large
tree limb snapped in Dwight. Time estimated
from radar.
0554 PM Tstm Wnd Dmg 2 SSW Manteno 41.23N 87.86W
07/24/2025 Kankakee IL Public
Photo shared on social media showing a tree
downed onto Frontage Road near Manteno. Time
estimated from radar.
&&Local storm report, Jul 26, 3:29 PM CST, 46 minutes before
Preliminary Local Storm Report
National Weather Service Chicago IL
429 PM CDT Sat Jul 26 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1220 PM Flash Flood 1 SW Darien 41.74N 87.99W
07/25/2025 DuPage IL Broadcast Media
Multiple rooms were flooded inside the
Darien Municipal Center.
1230 PM Flash Flood 1 ESE Archer Hts. - Chi 41.81N 87.71W
07/25/2025 Cook IL Broadcast Media
Viaduct flooded at Archer Avenue and 47th
Street.
1230 PM Flash Flood 1 SSW Willowbrook 41.76N 87.94W
07/25/2025 DuPage IL Public
Updates previous flash flood report from 1
SSW Willowbrook. Parking lots and roads at
and near the intersection of Route 83 and
Plainfield Road on the south side of
Willowbrook flooded with several inches of
water. Basement flooding also reported in
adjacent neighborhood.
0100 PM Flash Flood 1 SSE Midway Airport 41.76N 87.74W
07/25/2025 Cook IL Public
Photo shared on social media showing several
inches of water covering the Target parking
lot in Bedford Park. A few inches of water
also reported on Cicero Avenue between 72nd
Street and 79th Street.
0134 PM Rain 1 NE Indian Head Park 41.77N 87.89W
07/25/2025 M3.74 Inch Cook IL Mesonet
Personal weather station KILLAGRA27.
Rainfall total from 11:14 AM to 1:34 PM.
0159 PM Rain Garfield Ridge - Chicag 41.79N 87.78W
07/25/2025 M5.98 Inch Cook IL Mesonet
Personal weather station KILCHICA1217.
Rainfall total from 11:24 AM to 1:59 PM.
0204 PM Rain 1 W Bedford Park 41.77N 87.81W
07/25/2025 M4.64 Inch Cook IL Mesonet
Updates previous rain report from 1 W
Bedford Park. Personal weather station
KILBRIDG5. Rainfall total from 11:14 AM to
2:04 PM.
0224 PM Rain 1 SE Midway Airport 41.78N 87.74W
07/25/2025 M5.15 Inch Cook IL Mesonet
Personal weather station KILCHICA37.
Rainfall total from 11:14 AM to 2:24 PM.
0230 PM Rain 1 WNW Bridgeview 41.76N 87.82W
07/25/2025 M5.68 Inch Cook IL Cocorahs
CoCoRaHS station IL-CK-12. Storm
total/3-hour rainfall. 24-hour rainfall
total of 5.84 inches was reported later next
morning.
0700 AM Rain Burr Ridge 41.75N 87.91W
07/26/2025 M3.92 Inch Cook IL Cocorahs
CoCoRaHS station IL-CK-394. 24-hour rainfall
total, most of which fell within 2-3 hours.
0700 AM Rain 2 SE Darien 41.73N 87.95W
07/26/2025 M3.49 Inch DuPage IL Cocorahs
CoCoRaHS station IL-DP-79. 24-hour rainfall
total, most of which fell within 2-3 hours.
0700 AM Rain 1 SSW Indian Head Park 41.76N 87.90W
07/26/2025 M3.38 Inch Cook IL Cocorahs
CoCoRaHS station IL-CK-358. 24-hour rainfall
total, most of which fell within 2-3 hours.
&&Local storm report, Jul 26, 3:33 PM CST, 42 minutes before
Preliminary Local Storm Report...Summary
National Weather Service Chicago IL
433 PM CDT Sat Jul 26 2025
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0930 AM Funnel Cloud Serena 41.48N 88.74W
07/25/2025 La Salle IL Emergency Mngr
Photos shared show a well developed funnel
cloud extending two thirds of the way to the
ground near Serena.
1010 AM Funnel Cloud 2 W Dayton 41.38N 88.84W
07/25/2025 La Salle IL Law Enforcement
Numerous reports of funnel clouds relayed by
state trooper and law enforcement.
1142 AM Flash Flood 3 SSE Naperville 41.73N 88.13W
07/25/2025 DuPage IL Public
Photos showed on social media showed
submerged roadways (at least 6 inches of
water) in the vicinity of 87th street and
South Washington.
1205 PM Flood 2 SE Naperville 41.75N 88.12W
07/25/2025 DuPage IL Public
Photo showing a few inches of standing water
at the Market Meadows Shopping Center
parking lot.
1210 PM Flash Flood 1 SSW Washington Park - 41.78N 87.63W
07/25/2025 Cook IL NWS Employee
Reports of underpass on South State street
completely filled with water. Vehicle
extrication in progress.
1210 PM Flood 4 SSW Naperville 41.71N 88.17W
07/25/2025 Will IL Public
Video shared on social media of neighborhood
roads in the vicinity of 95th Street and
Plainfield-Naperville Road submerged in
standing water.
1215 PM Flash Flood Chicago Lawn 41.77N 87.70W
07/25/2025 Cook IL Public
Numerous reports indicating widespread
flooding of basements in the Chicago Lawn
community area of Chicago. Relayed via
Chicago311.
1215 PM Flash Flood 1 E Midway Airport 41.78N 87.72W
07/25/2025 Cook IL Public
Numerous reports indicating widespread
flooding of basements in the West Lawn and
West Elsdon community areas of Chicago.
Relayed via Chicago311.
1215 PM Flash Flood 1 SW Bridgeview 41.74N 87.82W
07/25/2025 Cook IL Emergency Mngr
Flood waters were waist-high along
neighborhood streets from 79th street to
83rd street. In addition, 6 to 18 inches of
water was on roadways from 71th street to
84th street just east of Harlem Ave. There
were over a dozen water rescues across
Bridgeview during the flash flood.
1220 PM Flash Flood 1 SW Darien 41.74N 87.99W
07/25/2025 DuPage IL Broadcast Media
Multiple rooms were flooded inside the
Darien Municipal Center.
1220 PM Flash Flood 1 S Darien 41.74N 87.97W
07/25/2025 DuPage IL Public
Multiple public reports of flooding in
Darien. Cars got stuck in several inches of
water on Cass Avenue, eventually leading to
the roads closure. Knee-deep water reported
in parking lots and several side streets
flooded as well.
1230 PM Flash Flood 1 SSW Willowbrook 41.76N 87.94W
07/25/2025 DuPage IL Public
Updates previous flash flood report from 1
SSW Willowbrook. Parking lots and roads at
and near the intersection of Route 83 and
Plainfield Road on the south side of
Willowbrook flooded with several inches of
water. Basement flooding also reported in
adjacent neighborhood.
1230 PM Flash Flood 1 ESE Archer Hts. - Chi 41.81N 87.71W
07/25/2025 Cook IL Broadcast Media
Viaduct flooded at Archer Avenue and 47th
Street.
1230 PM Flood Indian Head Park 41.77N 87.90W
07/25/2025 Cook IL Public
Video shared on social media of a few inches
of standing water on a road in Indian Head
Park.
1230 PM Flash Flood 1 WSW Gage Park - Chica 41.79N 87.71W
07/25/2025 Cook IL Public
Photo shared on social media showing several
inches of water flooding the 58th Street
underpass at Central Park Avenue.
1230 PM Flash Flood Gage Park - Chicago 41.79N 87.70W
07/25/2025 Cook IL Public
Multiple public reports of basement flooding
in and near the Gage Park community area of
Chicago.
1231 PM Flash Flood New City - Chicago 41.81N 87.65W
07/25/2025 Cook IL 911 Call Center
Corrects previous flash flood report from
New City - Chicago. 2 to 3 feet of water
reported on 47th street between South
Halsted Street and South Morgan Street.
1231 PM Flash Flood 1 ESE New City - Chicag 41.80N 87.64W
07/25/2025 Cook IL 911 Call Center
Corrects previous flash flood report from 1
ESE New City - Chicago. Viaduct completely
flooded.
1240 PM Flood Countryside 41.78N 87.88W
07/25/2025 Cook IL Public
Videos and photos shared on social media
show a few inches of standing water on
multiple roads in Countryside.
1240 PM Flash Flood Summit 41.79N 87.81W
07/25/2025 Cook IL Trained Spotter
Photos and videos shared on social media
showing multiple streets flooded with
several inches of water in Summit.
1240 PM Flash Flood 1 NNE Bedford Park 41.78N 87.79W
07/25/2025 Cook IL Trained Spotter
Photos and videos shared on social media
showing multiple streets flooded with
several inches of water in the Clearing and
Garfield Ridge community areas of Chicago.
Multiple public reports of flooded basements
in the area.
1245 PM Flash Flood 1 WSW Burr Ridge 41.74N 87.94W
07/25/2025 DuPage IL Emergency Mngr
Video shared by EM official depicts 6 to 12
inches of water on southbound lanes of
Interstate 55 near IL 83.
1245 PM Flash Flood Justice 41.75N 87.84W
07/25/2025 Cook IL Public
Multiple public reports of flooding in
Justice. At least one car got stuck in flood
waters, and multiple streets were flooded
with several inches of water.
1257 PM Flash Flood 1 ENE Gage Park - Chica 41.80N 87.68W
07/25/2025 Cook IL 911 Call Center
Person trapped in car in flooded viaduct.
Police were called to perform a rescue.
1258 PM Flash Flood 1 N Gage Park - Chicago 41.80N 87.69W
07/25/2025 Cook IL 911 Call Center
Person trapped in vehicle in flooded
viaduct. The vehicle was towed out of the
floodwaters.
0100 PM Flash Flood 1 SSE Midway Airport 41.76N 87.74W
07/25/2025 Cook IL Public
Photo shared on social media showing several
inches of water covering the Target parking
lot in Bedford Park. A few inches of water
also reported on Cicero Avenue between 72nd
Street and 79th Street.
0100 PM Flash Flood 1 SE Gage Park - Chicag 41.79N 87.68W
07/25/2025 Cook IL 911 Call Center
Report of a flooded viaduct.
0100 PM Rain 1 SSW Darien 41.74N 87.98W
07/25/2025 M4.72 Inch DuPage IL Public
Personal weather station measured 4.72
inches of rain between 11:00 AM and 1:00 PM.
0100 PM Flash Flood 1 W Bedford Park 41.77N 87.82W
07/25/2025 Cook IL Public
Over 6 inches of water reported on streets
in Bedford Park.
0100 PM Flash Flood Forest View 41.81N 87.79W
07/25/2025 Cook IL Public
Photo shared on social media showing up to
approximately 6 inches of water on a street
in Forest View.
0115 PM Flash Flood 1 NNE Burbank 41.76N 87.76W
07/25/2025 Cook IL Public
At least 6 inches of water on the road at
the intersection of 73rd Street and Central
Avenue.
0115 PM Flood Burbank 41.74N 87.77W
07/25/2025 Cook IL Public
Multiple public reports of a few inches of
standing water on various streets in
Burbank.
0117 PM Flash Flood 2 WSW Burr Ridge 41.74N 87.94W
07/25/2025 DuPage IL County Official
Photo relayed showing substantial water in
parking lots in vicinity of South Frontage
road and Meadobrook Drive. Water is up to
the hoods of several parked vehicles.
0121 PM Flash Flood 1 SE Summit 41.78N 87.81W
07/25/2025 Cook IL Public
Photo shared on social media depicts a
flooded roadway near the corner of W 50th
and 74h Ave.
0130 PM Rain Bedford Park 41.78N 87.80W
07/25/2025 M4.90 Inch Cook IL Public
Personal weather station measured 4.90
inches of rain between 11:30 AM and 1:30 PM.
0134 PM Rain 1 NE Indian Head Park 41.77N 87.89W
07/25/2025 M3.74 Inch Cook IL Mesonet
Personal weather station KILLAGRA27.
Rainfall total from 11:14 AM to 1:34 PM.
0151 PM Rain Burr Ridge 41.75N 87.92W
07/25/2025 M5.50 Inch Cook IL Public
Updates previous rain report from Burr
Ridge. Photo shared on social media showed
exactly 5.5 inches of rain in roughly a 3
hour duration ending at 1:50 PM. 5 inches of
rain fell between 11:00 AM and 1:00 PM.
0159 PM Rain Garfield Ridge - Chicag 41.79N 87.78W
07/25/2025 M5.98 Inch Cook IL Mesonet
Personal weather station KILCHICA1217.
Rainfall total from 11:24 AM to 1:59 PM.
0204 PM Rain 1 W Bedford Park 41.77N 87.81W
07/25/2025 M4.64 Inch Cook IL Mesonet
Updates previous rain report from 1 W
Bedford Park. Personal weather station
KILBRIDG5. Rainfall total from 11:14 AM to
2:04 PM.
0224 PM Rain 1 SE Midway Airport 41.78N 87.74W
07/25/2025 M5.15 Inch Cook IL Mesonet
Personal weather station KILCHICA37.
Rainfall total from 11:14 AM to 2:24 PM.
0230 PM Rain 1 WNW Bridgeview 41.76N 87.82W
07/25/2025 M5.68 Inch Cook IL Cocorahs
CoCoRaHS station IL-CK-12. Storm
total/3-hour rainfall. 24-hour rainfall
total of 5.84 inches was reported later next
morning.
0230 PM Rain 3.0 SW Midway Airport 41.74N 87.78W
07/25/2025 M3.10 Inch Cook IL CO-OP Observer
Corrects previous rain report from 3SW
Midway Airport. A storm total of 3.10 inches
was recorded.
0230 PM Rain Midway Airport 41.79N 87.75W
07/25/2025 M3.14 Inch Cook IL ASOS
Updates previous rain report from Midway
Airport. A storm total of 3.14 inches was
recorded.
1008 PM Rain Lindenwood 42.05N 89.03W
07/25/2025 M3.20 Inch Ogle IL Mesonet
Private weather station has measured 3.20
inches of rain in the past 60 minutes.
1030 PM Flood 3 ESE New Milford 42.15N 89.01W
07/25/2025 Winnebago IL Public
Public report of water running over Edson
Road north of Monroe Center.
1040 PM Flash Flood Hillcrest 41.95N 89.08W
07/25/2025 Ogle IL Public
Multiple public reports of home and basement
flooding in Hillcrest and on the north side
of Rochelle. Fields at Rochelle Township
High School were flooded, and the Kyte River
overflowed its banks.
1050 PM Flash Flood 4 SSW Lindenwood 42.01N 89.07W
07/25/2025 Ogle IL 911 Call Center
Multiple reports of flooding on IL routes 64
and 251. Route 64 was flooded in multiple
spots between Skare Road and I-39, and
ditches along the road became full of water.
A video was also shared on social media
showing a few inches of water on Route 251
near Route 64. The first report of flooding
was received at around 10:50 PM, and
flooding persisted for at least two hours.
0700 AM Rain 1 SSW Indian Head Park 41.76N 87.90W
07/26/2025 M3.38 Inch Cook IL Cocorahs
CoCoRaHS station IL-CK-358. 24-hour rainfall
total, most of which fell within 2-3 hours.
0700 AM Rain 2 SE Darien 41.73N 87.95W
07/26/2025 M3.49 Inch DuPage IL Cocorahs
CoCoRaHS station IL-DP-79. 24-hour rainfall
total, most of which fell within 2-3 hours.
0700 AM Rain Burr Ridge 41.75N 87.91W
07/26/2025 M3.92 Inch Cook IL Cocorahs
CoCoRaHS station IL-CK-394. 24-hour rainfall
total, most of which fell within 2-3 hours.
&&