Flash Flood Warning 13, NWS Chicago, IL

496 
WGUS73 KLOT 150149
FFSLOT

Flash Flood Statement
National Weather Service Chicago IL
849 PM CDT Sun Jul 14 2024

ILC007-150600-
/O.CON.KLOT.FF.W.0013.000000T0000Z-240715T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone IL-
849 PM CDT Sun Jul 14 2024

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1 AM CDT MONDAY FOR 
SOUTHERN BOONE COUNTY...

At 849 PM CDT, Doppler radar and automated rain gauges indicated 
thunderstorms producing heavy rain with rainfall rates up to 2 
inches in 1 hour. Up to 1.5 inches of rain have fallen, with 
additional rainfall amounts up to 2 inches possible. Flash flooding 
is ongoing or expected to begin shortly.

HAZARD...Flash flooding.

SOURCE...Radar and automated gauges.

IMPACT...Rapid-onset flooding of creeks, streams, drainage
         ditches, streets, underpasses, low-lying areas, and
         other poor drainage areas.

Some locations that will experience flash flooding include...
  Belvidere, Loves Park, Poplar Grove, Candlewick Lake, Cherry 
  Valley, Timberlane and Garden Prairie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4229 8871 4221 8871 4219 8871 4215 8871
      4215 8874 4215 8875 4215 8880 4215 8883
      4215 8887 4215 8888 4215 8892 4215 8894
      4236 8894 4236 8871 4230 8871

FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL RATE...2 INCHES IN 1 HOUR

$$

WSL

161 
WGUS73 KLOT 150309
FFSLOT

Flash Flood Statement
National Weather Service Chicago IL
1009 PM CDT Sun Jul 14 2024

ILC007-150600-
/O.CON.KLOT.FF.W.0013.000000T0000Z-240715T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone IL-
1009 PM CDT Sun Jul 14 2024

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1 AM CDT MONDAY FOR 
SOUTHERN BOONE COUNTY...

At 1009 PM CDT, Doppler radar and automated rain gauges indicated 
heavy rainfall moving out of the area and rainfall rates 
diminishing. Up to 3.5 inches of rain have fallen. Although no new 
urban flooding is likely, street flooding from earlier heavy 
rainfall is likely to continue for the next few hours. Water levels 
may also continue to rise on area waterways as runoff moves into 
ditches and creeks.

HAZARD...Flash flooding.

SOURCE...Radar and automated gauges.

IMPACT...Rapid-onset flooding of creeks, streams, drainage
         ditches, streets, underpasses, low-lying areas, and
         other poor drainage areas.

Some locations that will experience flash flooding include...
  Belvidere, Loves Park, Poplar Grove, Candlewick Lake, Cherry 
  Valley, Timberlane and Garden Prairie.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

&&

LAT...LON 4229 8871 4221 8871 4219 8871 4215 8871
      4215 8874 4215 8875 4215 8880 4215 8883
      4215 8887 4215 8888 4215 8892 4215 8894
      4236 8894 4236 8871 4230 8871

FLASH FLOOD...RADAR AND GAUGE INDICATED

$$

WSL

493 
WGUS73 KLOT 150456
FFSLOT

Flash Flood Statement
National Weather Service Chicago IL
1156 PM CDT Sun Jul 14 2024

ILC007-150506-
/O.CAN.KLOT.FF.W.0013.000000T0000Z-240715T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone IL-
1156 PM CDT Sun Jul 14 2024

...FLASH FLOOD WARNING FOR SOUTHERN BOONE COUNTY HAS BEEN REPLACED 
WITH A FLOOD WARNING...

Rainfall has ended and no new flooding is expected, although some 
creeks may continue to rise for the next few hours.

&&

LAT...LON 4229 8871 4221 8871 4219 8871 4215 8871
      4215 8874 4215 8875 4215 8880 4215 8883
      4215 8887 4215 8888 4215 8892 4215 8894
      4236 8894 4236 8871 4230 8871

$$

Doom

Area Forecast Discussion
National Weather Service Chicago/Romeoville, IL
652 PM CDT Sun Jul 14 2024

.KEY MESSAGES...

- Additional clusters of storms are expected through this
  evening, with continued threats for severe weather and flash
  flooding.

- Hot and very humid on Monday with heat indices of 100-110F and
  a Heat Advisory likely needed for at least portions of the area.

- Additional rounds of thunderstorms are expected late day
  Monday-Monday night (area wide) and on Tuesday (mainly I-55
  and southeast) with continued severe and flash flood threats.

- The pattern finally breaks Tuesday night into Wednesday with a
  return of tranquil conditions late Wednesday onward.

&&

.DISCUSSION...
Issued at 320 PM CDT Sun Jul 14 2024

Through Monday Night:

Through Tonight:

A complex convective scenario will unfold later this afternoon
through the evening as a well defined MCV from overnight severe
convection tracks across the region. In the near term, widely
scattered convection continues to percolate across portions of
northeast Illinois and northwest Indiana. However, in a still
less favorable thermodynamic and marginal deep layer wind shear
environment, these showers and isolated thunderstorms have thus
far (thankfully) not shown any signs of intensification. Should
this continue to be the case, the main threats through about 5
PM CDT with this activity will be localized lightning strikes
and downpours.

The presence of the MCV near the MS River moving into the region
during peak heating and large instability reservoir certainly
adds to concern for a scattered severe weather threat, along with
flash flooding. Given the current location of the MCV, suspect
that scattered thunderstorms will initiate over the northwest CWA
as early as 4-6 PM. Bumped up PoPs to likely (~60-70%/numerous
storms type coverage) this evening. Deep layer shear will be on
the increase (up to 35 kt if not more), so initial storm mode may
be mixed supercellular and multi-cellular clusters. There should
be a tendency for cold pool development and transition to bowing
segments with time this evening, which should eventually result in
more progressive storm motions than on Saturday night.

Hazards wise, initial supercells may be capable of all hazards,
though extent of any tornado threat would be driven by how much
low-level shear is increased by the enhanced flow aloft
associated with the MCV, as LCLs will certainly low enough.
Despite the high moisture and freezing levels, initial
supercells will also be capable of producing large hail due to
steep mid-level lapse rates. Overall greatest threat, especially
into the evening should be for pockets of damaging winds. With
the LLJ ramping up in concert with MCV flow enhancement, may
also need to monitor for mesovortex and QLCS tornado
development.

Finally, last but not least, given the significant flooding
in Rockford and nearby across far northern Illinois last night,
plus very high moisture, flash flooding continues to be a
noteworthy concern. We issued a new Flood Watch for all of our
counties except Livingston, Ford, Iroquois, Newton, Jasper, and
Benton. The potential for significant flooding may be somewhat
less if propagation tied to cold pools and the progression of
the MCV clears deep convection east of our area quicker, by
midnight or a bit after. The faster propagation may be most
favored once the organized clusters of storms/possible MCS reach
our far southern CWA counties. With the sandy soils of the
Kankakee Valley a bit less vulnerable to flash flooding and the
above in mind, opted to leave out our far southern counties, but
can't rule out needing to extend the watch this evening.

Monday-Monday Night:

Potentially dangerous heat and humidity will be followed by yet
another round of thunderstorms in the late afternoon through the
evening and early overnight. This round will be accompanied by a
threat for significant severe weather (damaging winds and
tornadoes) and flash flooding.

There's enough of a signal across the guidance for a
sufficiently long lull in convective activity on Monday for the
heat and humidity to perform closer to expectations. Wouldn't
say confidence is high in no "surprises", but that the footprint
of any thunderstorms prior to mid afternoon to be low enough to
not substantially affect the cloud cover, temperatures, and dew
point temperatures. With low 20s Celsius 850 mb temps and mid-
upper 20s C 925 mb temps, expecting highs in the lower to
locally mid 90s, likely warmest over the heart of the Chicago
urban heat island. Oppressive dew points well into the 70s (a
touch lower over Chicago) and possibly approaching 80F over
farming areas will result in heat indices of 100-110F. Elected
to not issue a Heat Advisory with this forecast package, but
expecting we will need one for a large swath of the CWA,
assuming no major surprises are in the offing.

A synoptically evident severe and flash flooding threat is then
in store for the late afternoon through the evening, and
possibly early overnight hours. A coherent robust mid-level
short-wave and speed max will intercept the strongly unstable
environment (up to 3-5k J/kg of MLCAPE and steep mid-level lapse
rates) and erode lingering capping after 21z. The mid-level
speed max and enhanced low- level flow will generate the
strongest deep layer and low-level wind shear profiles of this
stretch, at up to 50 kt and 30-35 kt, respectively. In west-
northwest flow aloft, there is commonly sufficient veering with
height for initial supercell mode or mixed supercell and multi-
cellular clusters in these setups. There again should be a
transition to a linear QLCS or bowing segment mode with time,
though specific details on this are (needless to say) uncertain.

With the above in mind, SPC's level 3 of 5 (Enhanced Risk)
severe threat appears quite reasonable pattern recognition wise.
The most apparent severe threat is damaging wind gusts, with a
distinct potential for destructive 70-80 mph gusts. This will
particularly be the case assuming relatively quick transition to
a more linear mode (not always a sure thing). Whether in
supercell or QLCS mode, tornadoes will also be a threat given
favorable low level shear/helicity and LCL heights, drawing a
level 2 of 5 (5% probs) risk from the SPC. Finally, severe hail
may be somewhat of a lesser threat due to messy to linear storm
modes, very moist profiles, and high freezing levels, though
certainly can't be ruled out.

Flash flooding will once again be a notable threat due to the
antecedent very wet conditions, and 150-200% of normal PWATs
approaching or exceeding 2" in spots. It appears likely we'll
need another Flood Watch for flash flooding for much of if not
the entire area. Also enhancing the threat will be the parallel
orientation of the deep layer wind shear vector (westerly) to
west to east oriented convective clusters. Exactly how long the
severe and flash flooding threat will last into Monday night is
a bit uncertain, though felt comfortable with the evening high
end likely to categorical PoPs (70-80+%). After midnight, it's
possible the threat for additional storms ends more quickly than
implied in the gridded forecast. Stepped down PoPs slightly and
thunder wording to chance overnight to account for the
possibility of an earlier end time.

Castro

Tuesday through Sunday:

Tuesday-Tuesday Night:

Showers and storms may be ongoing Tuesday morning, mainly across
the southern portion of the CWA. A cold front passage Tuesday
morning will keep high temperatures in the mid-80s with onshore
flow limiting them to the upper 70s near the lake. This cold front
will be draped across or just south of the southern portion of
the CWA Tuesday afternoon. With 2000-3000 J/kg of CAPE expected to
build along the frontal boundary and steep mid-level lapse rates
(7-8 C/km), thunderstorms are expected to form during the
afternoon. These storms should be limited in extent to the far
southern/southeastern portion of the CWA (southeast of I-55)
before exiting to the south and southeast. These storms pose a
threat of strong winds and hail.

Carothers

Wednesday and beyond...

We'll eventually get into a break from this active stretch towards
the end of the week. However, based on the incoming guidance,
can't entirely rule out a few showers and thunderstorms on
Wednesday afternoon as a trailing shortwave speeds across the
Great Lakes. Forecast soundings suggest there will be a little
lingering boundary layer moisture, and perhaps sufficient
destabilization to realize some modest lingering MLCAPE. The
blended guidance showing low-end chance PoPs east of about I-55/57
seem reasonable at this range as a result. If storms do manage to
fire within sufficient lingering low-level moisture, sufficient
shear exists to yield a low-end risk for a few stronger/more
organized cores.

As it stands right now, Thursday through the upcoming weekend are
looking nice and quiet as sprawling high pressure begins to build
over the region. In the process of building this high, however,
breezy northerly winds down the lake may yield a brief period of
dangerous swimming conditions/rip currents Wednesday night into
Thursday. Other than that, however, conditions look outstanding
into the weekend with comfortable dewpoints, near to below-normal
temperatures, and daily lake cooling.

Carlaw

&&

.AVIATION /00Z TAFS THROUGH 06Z TUESDAY/...
Issued at 652 PM CDT Sun Jul 14 2024

Forecast concerns include...

Thunderstorms this evening and again Monday evening.
Chance of fog overnight/early Monday morning.

Thunderstorms are developing across eastern IA and far
northwest IL early this evening and this activity will continue
developing east into northern IL and then shift southeast across
the entire area through the late evening. Some of the storms
may be severe with strong/erratic winds. Torrential rainfall
will also be possible with ifr/lifr vis/cigs. Models are in good
agreement that once this activity moves southeast of the
terminals in the early overnight hours, dry weather is expected
through early/mid Monday afternoon. Another round of strong/
severe thunderstorms is expected Monday evening. Models also are
in good agreement with a later timing, mainly Monday evening.
Given the consistency, opted to change current prob mention to
tempo and adjusted timing later. Similar to tonight, strong/
erratic winds and torrential rainfall will be possible with
the storms Monday evening.

Winds outside of thunderstorms are expected to remain generally
southwesterly. There may be a period of gusts into the 20-25kt
range mid/late Monday afternoon.

Patchy fog will be possible overnight into early Monday morning.
Low confidence for how widespread the fog may become and how low
the visibilities may drop. For now, have added tempo mention at
RFD/DPA. cms

&&

.LOT WATCHES/WARNINGS/ADVISORIES...
IL...Flood Watch until 4 AM CDT Monday for ILZ003-ILZ004-ILZ005-
     ILZ006-ILZ008-ILZ010-ILZ011-ILZ012-ILZ013-ILZ019-ILZ020-
     ILZ021-ILZ023-ILZ103-ILZ104-ILZ105-ILZ106-ILZ107-ILZ108.

IN...Flood Watch until 4 AM CDT Monday for INZ001-INZ002.

LM...None.

&&

Visit us at weather.gov/chicago

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
401 PM CDT Sun Jul 14 2024

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-152115-
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-
401 PM CDT Sun Jul 14 2024 /501 PM EDT Sun Jul 14 2024/

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 2 of 5 Damaging Wind Risk...up to 70 mph.
     Level 2 of 5 Flash Flooding Risk.
     Level 1 of 5 Large Hail Risk...up to quarter size.

DISCUSSION...

Another round of strong to severe thunderstorms will move across
the area through this evening. Damaging winds are expected to be
the primary severe hazard, though large hail and tornadoes will
also be possible. Torrential downpours may produce flash flooding.
If notable heavy rain occurs over the most hard hit areas from
Saturday night along with the most heavily urbanized portions of
the Chicago metro, significant flash flooding may develop.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Significant Thunderstorm Risk...with an associated:
     Level 3 of 5 Severe Thunderstorm Risk.
     Level 2 of 4 Flash Flooding Risk.
  Elevated Excessive Heat Risk.
Tuesday...
  Elevated Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk south of Kankakee River.
     Level 1 of 4 Flash Flooding Risk well east of I-57.
Wednesday...
  Limited Thunderstorm Risk well south of I-80.

DISCUSSION...

Dangerous heat with heat indices in excess of 105 degrees is
possible on Monday.

Another round of scattered to numerous severe thunderstorms is
expected late Monday afternoon through the evening. Damaging to
destructive wind gusts, tornadoes, and isolated large hail will
all be possible. Torrential downpours may again cause flash
flooding.

Scattered thunderstorms are possible again on Tuesday afternoon,
primarily near and southeast of I-55, which may be accompanied by
an isolated severe weather and flash flooding threat.

.SPOTTER INFORMATION STATEMENT...

 Spotters will likely be needed this evening through early overnight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east southeast at 40 mph.

LMZ740>745-152115-
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-
401 PM CDT Sun Jul 14 2024

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...

   Elevated Thunderstorm Risk...with an associated:
     Level 2 of 5 Thunderstorm Wind Gust Risk...up to 60 knots.
     Level 1 of 5 Hail Risk...up to quarter size.
     Level 1 of 5 Thunderstorm Waterspout Risk.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Monday...
  Significant Thunderstorm Risk...with an associated:
     Level 3 of 5 Severe Thunderstorm Risk.
Tuesday...
  Limited Thunderstorm Risk.

Castro

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Preliminary Local Storm Report
National Weather Service Chicago IL
308 PM CDT Sun Jul 14 2024

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

0900 AM     Rain             3 ENE Rockford Airport  42.22N 89.04W
07/14/2024  M4.85 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILCHERR15.

&&

RO

Preliminary Local Storm Report
National Weather Service Chicago IL
309 PM CDT Sun Jul 14 2024

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

0900 AM     Rain             2 ENE Rockford          42.28N 89.06W
07/14/2024  M6.24 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF128.

&&

RO

Preliminary Local Storm Report
National Weather Service Chicago IL
311 PM CDT Sun Jul 14 2024

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

0900 AM     Rain             3 SSE Loves Park        42.28N 89.04W
07/14/2024  M5.69 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF217.

&&

RO

Preliminary Local Storm Report
National Weather Service Chicago IL
314 PM CDT Sun Jul 14 2024

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

0700 AM     Rain             2 WNW Loves Park        42.32N 89.09W
07/14/2024  M4.87 Inch       Winnebago          IL   Cocorahs

            Cocorahs station IL-WN-48 4 NNW Rockford.

0630 AM     Rain             3 WSW Rockford          42.25N 89.15W
07/14/2024  M3.81 Inch       Winnebago          IL   Cocorahs

            Cocorahs station IL-WN-40 Rockford 3 WSW.

&&

Preliminary Local Storm Report...Summary
National Weather Service Chicago IL
340 PM CDT Sun Jul 14 2024

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

1025 PM     Hail             Belvidere               42.26N 88.84W
07/13/2024  E0.75 Inch       Boone              IL   Trained Spotter

            Pea to penny size hail.

1039 PM     Tstm Wnd Dmg     1 SE Rockford           42.26N 89.09W
07/13/2024                   Winnebago          IL   Public

            Tree downed onto roadway at Kishwaukee
            Street and 3rd Avenue. Time estimated from
            radar.

1047 PM     Flood            1 NW Belvidere          42.27N 88.85W
07/13/2024                   Boone              IL   Public

            Report from mPING: Street/road flooding.

1125 PM     Flash Flood      3 ESE Rockford          42.25N 89.03W
07/13/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue near Eastmoreland Avenue and
            Broadway in Rockford due to flash flooding.

1130 PM     Rain             Loves Park              42.31N 89.06W
07/13/2024  M4.00 Inch       Winnebago          IL   Trained Spotter

            Trained spotter reports 4 inches of rain in
            one hour from approximately 1030 PM to 1130
            PM.

1132 PM     Flash Flood      1 NNE Rockford          42.29N 89.09W
07/13/2024                   Winnebago          IL   Public

            Water rescue near Auburn Street and and
            Huffman Boulevard in Rockford due to flash
            flooding.

1133 PM     Flood            2 SSW Sleepy Hollow     42.06N 88.33W
07/13/2024                   Kane               IL   Public

            Multiple public reports of street flooding
            in and near Elgin.

1136 PM     Flash Flood      2 SE Rockford           42.25N 89.06W
07/13/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue reported at Broadway and
            Woodruff Ave.

1140 PM     Flash Flood      2 ESE Rockford          42.26N 89.06W
07/13/2024                   Winnebago          IL   Fire Dept/Rescue

            Multiple vehicles stuck in floodwaters along
            Charles Street near Rockford Avenue in
            Rockford.

1145 PM     Flash Flood      1 N Rockford            42.28N 89.10W
07/13/2024                   Winnebago          IL   Fire Dept/Rescue

            Possible flooding of residence near Whitman
            Street and Rockton Avenue in Rockford.

1145 PM     Flash Flood      2 ESE Rockford          42.26N 89.05W
07/13/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue near Charles Street and 22nd
            Street in Rockford due to flash flooding.

1149 PM     Flash Flood      4 SE Rockford           42.24N 89.04W
07/13/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue reported at Green Dale Drive
            and Ashbrook Drive.

1149 PM     Flash Flood      2 S Loves Park          42.29N 89.06W
07/13/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue reported at Spring Creek Road
            and North 2nd Street.

1155 PM     Flash Flood      2 S Rockford            42.24N 89.09W
07/13/2024                   Winnebago          IL   Public

            Public report of street flooding in south
            Rockford. Relayed via mping.

1200 AM     Flood            Villa Park              41.89N 87.98W
07/14/2024                   DuPage             IL   Emergency Mngr

            Street flooding up to 6 inches depth in
            Villa Park.

1205 AM     Flash Flood      1 WNW Cherry Valley     42.24N 88.98W
07/14/2024                   Winnebago          IL   Public

            Photo shared to social media shows water
            flowing over Charles Street at Perryville
            Road between Cherry Valley and Rockford due
            to flooding from unnamed creek.

1206 AM     Rain             1 W Cherry Valley       42.24N 88.98W
07/14/2024  M4.06 Inch       Winnebago          IL   Trained Spotter

            Trained spotter reports 4.06 inches of rain
            so far west of Cherry Valley.

1207 AM     Flash Flood      3 W Cherry Valley       42.24N 89.02W
07/14/2024                   Winnebago          IL   Public

            Drainage ditch near Harrison Avenue and
            Alpine Road overlfowing in southeast
            Rockford. Public report of 5 inches of rain
            so far, with rainfall began about 1035 PM.

1213 AM     Flash Flood      1 W Loves Park          42.32N 89.08W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue near Riverside Boulevard and
            Latham Street due to flash flooding in
            Rockford.

1230 AM     Flash Flood      3 WNW Cherry Valley     42.26N 89.01W
07/14/2024                   Winnebago          IL   Public

            Public report of flooded residences near
            Javelin Drive and Woodridge Driive in
            Rockford. Also damage to nearby parking lot
            pavement. Time estimated by radar and nearby
            reports.

1230 AM     Flash Flood      3 SSE Loves Park        42.28N 89.04W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue near Chelsea Avenue and Arden
            Court in Rockford due to flash flooding.

1233 AM     Flash Flood      2 S Rockford            42.24N 89.09W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Kishwaukee Street impassable at 23rd Avenue
            due to flood waters.

1240 AM     Flash Flood      1 ENE Elmhurst          41.91N 87.92W
07/14/2024                   DuPage             IL   Public

            Report on social media of North Avenue
            flooded with several feet of water near
            I-290.

1240 AM     Flood            1 SW Chicago Loop       41.87N 87.64W
07/14/2024                   Cook               IL   Public

            Report on social media of water covering
            multiple lanes of I-90 near Roosevelt Road
            in Chicago.

1240 AM     Flash Flood      2 ESE Rockford          42.26N 89.06W
07/14/2024                   Winnebago          IL   Public

            Corrects location of previous flash flood
            report from 2 NNW Cherry Valley. Multiple
            public reports of several cars and an
            ambulance stuck in flood waters near Sams
            Pizza on Charles Street.

1245 AM     Flood            1 S South Lawndale - Ch 41.83N 87.72W
07/14/2024                   Cook               IL   Public

            Standing water on at least some lanes of
            I-55 near Pulaski Road.

1254 AM     Rain             3 ENE Rockford Airport  42.22N 89.04W
07/14/2024  M4.73 Inch       Winnebago          IL   Public

            Privatge weather station KILCHERR15 reported
            4.73 inches of rain so far since 10 PM.

1255 AM     Flash Flood      2 E Rockford            42.27N 89.06W
07/14/2024                   Winnebago          IL   Public

            Video showing several inches of water on
            State Street just west of Rockford Avenue.

0100 AM     Flash Flood      1 ESE Rockford          42.27N 89.08W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Water entering a few structures near
            downtown Rockford including along Benton
            Street and State Street.

0100 AM     Flash Flood      2 ESE Rockford          42.26N 89.05W
07/14/2024                   Winnebago          IL   Public

            A video shared via social media shows a car
            submerged in floodwater in the Schnucks
            parking lot off of Charles St.

0105 AM     Flash Flood      3 NW Cherry Valley      42.27N 88.99W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue near State Street and Trainer
            Road in Rockford due to flash flooding.

0106 AM     Rain             3 WNW Cherry Valley     42.25N 89.02W
07/14/2024  M5.03 Inch       Winnebago          IL   Public

            Private weather station KILROCKF122 reported
            5.03 inches of rain so far since 10 PM.

0111 AM     Tstm Wnd Dmg     3 NNE DeKalb            41.97N 88.74W
07/14/2024                   De Kalb            IL   Trained Spotter

            Reasonably healthy 12 inch diameter tree
            downed just south of 1st Street and Bethany
            Road.

0111 AM     Flash Flood      3 E Rockford            42.26N 89.04W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue reported at Don Carter Lanes on
            State Street.

0115 AM     Flood            1 NNW Greater Grand Cro 41.77N 87.63W
07/14/2024                   Cook               IL   Public

            Relayed via social media, the left express
            lane of I-90/94 was flooded near 67th St.

0119 AM     Flash Flood      2 NW Rockford           42.29N 89.12W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue near Auburn Street and Central
            Avenue in Rockford due to flash flooding.

0122 AM     Flash Flood      2 NNW Rockford          42.30N 89.11W
07/14/2024                   Winnebago          IL   Public

            Water rescue on the 3400 block of Garfield
            Dr due to flash flooding.

0124 AM     Flash Flood      4 WSW Cherry Valley     42.22N 89.03W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Water rescue reported at Sandy Hollow Road
            and Alpine Road.

0125 AM     Flood            1 NW Pullman - Chicago  41.71N 87.61W
07/14/2024                   Cook               IL   Public

            Report via social media of flooding across
            all lanes of I-94 at Cottage Grove in
            Chicago.

0134 AM     Rain             3 WNW Rockford          42.28N 89.15W
07/14/2024  M6.15 Inch       Winnebago          IL   Public

            Private weather station KILROCKF160 reported
            6.15 inches rain so far since 10 PM.

0137 AM     Flash Flood      2 ESE Rockford          42.26N 89.06W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Several water rescues reported on the 600
            block of St. Louis Avenue.

0140 AM     Flash Flood      2 NNW Rockford          42.29N 89.11W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Numerous homes surrounded by water due to
            flash flooding along Northwest Drainage
            Ditch in northwest Rockford. Water rescues
            via boat ongoing.

0143 AM     Flash Flood      2 SE Rockford           42.26N 89.07W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Flood waters up to houses doorways on the
            1000 block of 14th Street. Residents being
            evacuated.

0145 AM     Rain             1 W Cherry Valley       42.24N 88.98W
07/14/2024  M5.39 Inch       Winnebago          IL   Trained Spotter

            Rainfall total observed by trained spotter
            between 10:12 PM and 1:45 AM.

0145 AM     Flash Flood      2 ESE Rockford          42.26N 89.07W
07/14/2024                   Winnebago          IL   Fire Dept/Rescue

            Multiple homes surrounded by water from
            flash flooding of Keith Creek between 11th
            Street and 18th Street in Rockford.

0312 AM     Rain             2 NW Cherry Valley      42.26N 88.99W
07/14/2024  M5.50 Inch       Winnebago          IL   Public

            Private weather station KILROCKF188 reported
            5.5 inches of rain.

0316 AM     Rain             3 SSE Loves Park        42.28N 89.04W
07/14/2024  M5.62 Inch       Winnebago          IL   Public

            Private weather station KILROCKF217 reported
            5.62 inches of rainfall.

0320 AM     Rain             2 WSW Cherry Valley     42.23N 89.00W
07/14/2024  M5.35 Inch       Winnebago          IL   Public

            Private weather station KILROCKF201 reported
            5.35 inches of rainfall.

0329 AM     Marine Tstm Wind 2 NE Navy Pier          41.92N 87.57W
07/14/2024  M51 MPH          LMZ741             IL   C-Man Station

0630 AM     Rain             3 WSW Rockford          42.25N 89.15W
07/14/2024  M3.81 Inch       Winnebago          IL   Cocorahs

            Cocorahs station IL-WN-40 Rockford 3 WSW.

0635 AM     Tstm Wnd Dmg     1 SW Oregon             42.00N 89.35W
07/14/2024                   Ogle               IL   Trained Spotter

            Trees downed onto power lines along Pines
            Road west of Oregon.

0700 AM     Rain             2 WNW Loves Park        42.32N 89.09W
07/14/2024  M4.87 Inch       Winnebago          IL   Cocorahs

            Cocorahs station IL-WN-48 4 NNW Rockford.

0716 AM     Tstm Wnd Gst     6 SE Ashton             41.80N 89.16W
07/14/2024  M41 MPH          Lee                IL   Public

            Personal weather station recorded a gust of
            41 mph.

0727 AM     Tstm Wnd Gst     2 SE Compton            41.68N 89.06W
07/14/2024  M43 MPH          Lee                IL   Public

            Personal weather station recorded a gust of
            43 mph.

0730 AM     Flood            3 NNE Fairdale          42.14N 88.90W
07/14/2024                   De Kalb            IL   Public

            Photo shared on social media shows roadway
            flooding due to Trimble Run near Irene Road
            and McNeal Road northwest of Kirkland.
            Relayed by broadcast media.

0742 AM     Tstm Wnd Gst     3 NNE Leland            41.66N 88.78W
07/14/2024  M45 MPH          De Kalb            IL   Public

            Personal weather station recorded a gust of
            45 mph.

0745 AM     Tstm Wnd Gst     3 WSW Leland            41.59N 88.85W
07/14/2024  M46 MPH          La Salle           IL   Public

            Personal weather station recorded a wind
            gust of 46 mph.

0756 AM     Tstm Wnd Gst     Leland                  41.61N 88.80W
07/14/2024  M42 MPH          La Salle           IL   Public

            Personal weather station record a wind gust
            of 42 mph.

0811 AM     Tstm Wnd Gst     3 ENE Norway            41.48N 88.62W
07/14/2024  M45 MPH          La Salle           IL   Public

            Personal weather station recorded a wind
            gust of 45 mph.

0813 AM     Tstm Wnd Gst     3 NE Marseilles         41.36N 88.66W
07/14/2024  M41 MPH          La Salle           IL   Public

            Personal weather station recorded a wind
            gust of 41 mph.

0829 AM     Tstm Wnd Gst     1 ENE Minooka           41.46N 88.25W
07/14/2024  M42 MPH          Will               IL   Public

            Personal weather station recorded a wind
            gust of 42 mph.

0832 AM     Tstm Wnd Gst     1 WSW Minooka           41.45N 88.28W
07/14/2024  M43 MPH          Grundy             IL   Public

            Personal weather station recorded a wind
            gust of 43 mph.

0832 AM     Tstm Wnd Gst     2 SW Minooka            41.43N 88.29W
07/14/2024  M40 MPH          Grundy             IL   Public

            Personal weather station recorded a wind
            gust of 40 mph.

0839 AM     Tstm Wnd Dmg     1 W Joliet              41.53N 88.10W
07/14/2024                   Will               IL   Trained Spotter

            Multiple reports of tree damage across the
            west side of Joliet, including snapped trees
            and downed limbs. Time estimated from radar.

0840 AM     Tstm Wnd Gst     2 N Rockdale            41.53N 88.12W
07/14/2024  E60 MPH          Will               IL   Trained Spotter

            Several branches down and lost power.

0843 AM     Tstm Wnd Dmg     Joliet                  41.53N 88.08W
07/14/2024                   Will               IL   Emergency Mngr

            Updates previous tstm wnd dmg report from
            Joliet. Photos relayed by EM show about half
            of the roof blown off the Illinois Rock and
            Roll Museum. The roof and roofing material
            was blown to the southeast. Time estimated
            based on radar.

0853 AM     Tstm Wnd Gst     2 NNW Manhattan         41.45N 88.00W
07/14/2024  M43 MPH          Will               IL   Public

            Personal weather station recorded a wind
            gust of 42 mph.

0855 AM     Tstm Wnd Gst     3 SSE Symerton          41.29N 88.04W
07/14/2024  M40 MPH          Will               IL   Public

            Personal weather station recorded a wind
            gust of 40 mph.

0900 AM     Rain             3 WNW Rockford          42.28N 89.15W
07/14/2024  M6.30 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF47.

0900 AM     Rain             2 ENE Rockford          42.28N 89.06W
07/14/2024  M6.24 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF128.

0900 AM     Rain             3 WNW Cherry Valley     42.26N 89.01W
07/14/2024  M5.74 Inch       Winnebago          IL   Amateur Radio

0900 AM     Rain             3 SSE Loves Park        42.28N 89.04W
07/14/2024  M5.69 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF217.

0900 AM     Rain             2 NW Cherry Valley      42.26N 88.99W
07/14/2024  M5.66 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF188.

0900 AM     Rain             2 WSW Cherry Valley     42.23N 89.00W
07/14/2024  M5.54 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF201.

0900 AM     Rain             2 WNW Cherry Valley     42.25N 89.00W
07/14/2024  M5.31 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF215.

0900 AM     Rain             3 WNW Cherry Valley     42.25N 89.02W
07/14/2024  M5.30 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF122.

0900 AM     Rain             3 ENE Winnebago         42.28N 89.18W
07/14/2024  M4.95 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILWINNE48.

0900 AM     Rain             3 ENE Rockford Airport  42.22N 89.04W
07/14/2024  M4.85 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILCHERR15.

0900 AM     Rain             4 N Herbert             42.21N 88.78W
07/14/2024  M4.80 Inch       Boone              IL   Mesonet

            Event total from personal weather station
            KILBELVI57.

0900 AM     Rain             2 WNW Loves Park        42.32N 89.10W
07/14/2024  M4.48 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF141.

0900 AM     Rain             3 WNW Loves Park        42.33N 89.11W
07/14/2024  M4.45 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF164.

0900 AM     Rain             3 E Loves Park          42.31N 89.01W
07/14/2024  M4.22 Inch       Winnebago          IL   Mesonet

            Event total from personal weather station
            KILROCKF125.

0900 AM     Rain             5 SSW Marengo           42.19N 88.64W
07/14/2024  M4.21 Inch       McHenry            IL   Mesonet

            Event total from personal weather station
            KILMAREN25.

0900 AM     Rain             3 SW Herbert            42.13N 88.82W
07/14/2024  M4.13 Inch       De Kalb            IL   Mesonet

            Event total from personal weather station
            KILKINGS11.

0925 AM     Tstm Wnd Gst     Grant Park              41.24N 87.65W
07/14/2024  M49 MPH          Kankakee           IL   Public

            Personal weather station recorded a wind
            gust of 49 mph. Site ID: KILGRANT12.

0925 AM     Tstm Wnd Dmg     1 E Grant Park          41.24N 87.63W
07/14/2024                   Kankakee           IL   Trained Spotter

            Trees and large tree limbs downed in and
            near Grant Park. Patches of corn also
            flattened east of Grant Park.

0939 AM     Tstm Wnd Gst     1 NW Lowell             41.30N 87.44W
07/14/2024  M60 MPH          Lake               IN   Trained Spotter

            Measured on a personal weather station.

&&

Special Weather Statement
National Weather Service Chicago/Romeoville
801 PM CDT Sun Jul 14 2024

ILZ004-150130-
Boone IL-
801 PM CDT Sun Jul 14 2024

...A STRONG THUNDERSTORM WILL IMPACT SOUTHERN BOONE COUNTY THROUGH
830 PM CDT...

At 800 PM CDT, Doppler radar was tracking a strong thunderstorm over
Belvidere, moving northeast at 10 mph.

HAZARD...Nickel size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vegetation is possible.

Locations impacted include...
Belvidere.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 100 AM CDT for
north central Illinois.

&&

LAT...LON 4216 8891 4223 8894 4234 8878 4217 8872
TIME...MOT...LOC 0100Z 242DEG 10KT 4222 8888

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...<30 MPH

Kluber