Isolated severe thunderstorms and widespread showers may produce flash flooding across the Southern Plains through Thursday. Numerous instances of flash flooding are expected in south-central Texas, including portions of the Hill Country; and an additional area across eastern Oklahoma into the Ozarks on Thursday. Heavy rainfall and mountain snow will return to southern California on Thursday. Read More >
Overview
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Scattered thunderstorms quickly became numerous along the I-88 corridor on the early afternoon of Friday, July 29th. These were extremely slow moving, leading to large totals in a short amount of time. With antecedent wet conditions, this rainfall brought flash flooding to DeKalb, Kane, DuPage, and Cook Counties. Some of the flooding persisted into the day after. In addition, the DuPage River at Bolingbrook reached a top 10 crest in its ~20 year period of record. |
 Rainfall Estimated from Bias-Corrected Radar |
Flooding:
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| Sycamore, IL (via social media share) |
Batavia, IL Matt Piechota |
Batavia, IL Matt Piechota |
Batavia, IL Matt Piechota |
Rain Reports
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| Rainfall Estimated from Bias-Corrected Radar | Rainfall Interpolated from Observers |
Public Information Statement
National Weather Service Chicago IL
1019 AM CDT Sat Jul 30 2016
...Morning Rainfall Roundup...
The following are rain amounts for the previous 24-hours
as measured in the morning by NWS Cooperative Observers
and CoCoRaHS observers.
Observations are usually taken between 6 AND 8 AM.
24-hour rainfall amounts
for Saturday(07/30/16)...
Illinois Rain
Location (County): fall (inches)
North Aurora 2NE (Kane)......................3.40
Darien (Du Page).............................3.34
Bolingbrook 3NE (Du Page)....................3.07
Homewood (Cook)..............................3.00
Aurora 4NE (Du Page).........................2.70
Naperville 2ESE (Du Page)....................2.65
Aurora (Kane)................................2.59
Lisle 1SE (Du Page)..........................2.49
Batavia 1WSW (Kane)..........................2.41
Batavia (Kane)...............................2.09
Naperville 2SE (Du Page).....................2.03
Lisle (Du Page)..............................1.89
Geneva 4WSW (Kane)...........................1.86
Naperville 1NW (Du Page).....................1.79
Westmont (Du Page)...........................1.64
Alsip (Cook).................................1.58
Elburn (Kane)................................1.50
Geneva 1SSW (Kane)...........................1.46
Beecher 3SSE (Will)..........................1.45
Burr Ridge 2SW (Du Page).....................1.44
Batavia 2WNW (Kane)..........................1.39
Batavia 1WNW (Kane)..........................1.36
La Salle (La Salle)..........................1.35
Elburn (Kane)................................1.33
Downers Grove 1S (Du Page)...................1.24
Lansing (Cook)...............................1.23
Genoa (De Kalb)..............................1.18
Lily Lake 2E (Kane)..........................1.18
Joliet Lock/dam (Will).......................1.10
Midway Coop (Cook)...........................1.08
Worth (Cook).................................1.07
Oak Lawn 2WNW (Cook).........................1.07
Glen Ellyn 2SSE (Du Page)....................0.99
Bourbonnais (Kankakee).......................0.97
Downers Grove 0.4NNE (Du Page)...............0.97
Beecher 3ENE (Will)..........................0.95
Rockford (Winnebago).........................0.94
Willow Springs (Cook)........................0.92
Oak Lawn (Cook)..............................0.88
Palos Park 1SW (Cook)........................0.83
Peru 1SW (La Salle)..........................0.83
Homer Glen 1ENE (Will).......................0.76
Hampshire (Kane).............................0.75
Elgin 8WSW (Kane)............................0.73
Channahon 1NNE (Will)........................0.72
Manhattan 1ESE (Will)........................0.71
Naperville 4SSW (Will).......................0.71
Winfield (Du Page)...........................0.66
Ottawa (La Salle)............................0.65
Capron (Boone)...............................0.64
Byron 3N (Ogle)..............................0.60
Manhattan 2SE (Will).........................0.59
De Kalb (De Kalb)............................0.57
Morris (Grundy)..............................0.56
West Chicago (Du Page).......................0.53
St. Charles (Kane)...........................0.53
Lombard 1NNW (Du Page).......................0.45
Romeoville (Will)............................0.45
Marseilles (La Salle)........................0.43
Carol Stream (Du Page).......................0.42
St. Charles 6NW (Kane).......................0.40
Rockford 3NE (Winnebago).....................0.39
Aurora 4SE (Du Page).........................0.38
Channahon 2SSE (Will)........................0.37
Aurora (Kane)................................0.36
Aurora 4SE (Du Page).........................0.35
Midway (Cook)................................0.33
Indiana Rain
Location (County): fall (inches)
Valparaiso 2WNW (Porter).....................3.11
Valparaiso 1NNW (Porter).....................3.01
Valparaiso 2NW (Porter)......................2.74
Rensselaer 8ENE (Jasper).....................1.82
Gary 4SSW (Lake).............................1.66
Valparaiso 3WSW (Porter).....................1.58
Valparaiso 1NE (Porter)......................1.57
Hobart 1SSW (Lake)...........................1.27
Gary 5ENE (Lake).............................1.20
Valparaiso 1SE (Porter)......................1.18
Portage 3E (Porter)..........................1.13
Chesterton 4E (Porter).......................1.12
Valparaiso 5WSW (Porter).....................1.02
Crown Point 1N (Lake)........................1.00
Valparaiso 6WSW (Porter).....................0.98
(w9opr)Wheatfield 1ENE (Jasper)..............0.90
Valparaiso 4SW (Porter)......................0.85
Valparaiso 7WSW (Porter).....................0.84
Rensselaer 10NNE (Jasper)....................0.76
Hobart 1NNW (Lake)...........................0.63
St. John (Lake)..............................0.61
Lake Village (Newton)........................0.60
Crown Point 2WSW (Lake)......................0.52
Valparaiso 6NW (Porter)......................0.52
De Motte 6S (Jasper).........................0.48
Portage 1ESE (Porter)........................0.48
Winfield 1NE (Lake)..........................0.45
(w9mal)Merrillville 2NNW (Lake)..............0.43
Schererville 1E (Lake).......................0.42
Rensselaer (Jasper)..........................0.34
Rensselaer 2SSW (Jasper).....................0.30
Radar:
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| July 29 Radar Loop at 15 minute intervals: 11:15 a.m. - 7:00 p.m. |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
750 AM CDT SAT JUL 30 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0156 PM HEAVY RAIN LANSING 41.57N 87.55W
07/29/2016 M0.96 INCH COOK IL CO-OP OBSERVER
RAINFALL IN 30 MINUTES
0230 PM FLASH FLOOD BOLINGBROOK 41.70N 88.08W
07/29/2016 WILL IL TRAINED SPOTTER
SECTION OF JANES AVE IMPASSABLE BETWEEN 75TH AND
BOUGHTON.
0230 PM FLASH FLOOD BATAVIA 41.85N 88.30W
07/29/2016 KANE IL TRAINED SPOTTER
WATER UP TO TOP OF TIRES ON RT 25 EAST OF WILSON ROAD
0233 PM FLASH FLOOD BOLINGBROOK 41.70N 88.08W
07/29/2016 WILL IL TRAINED SPOTTER
WATER UP TO BASE OF CAR DOORS IN PARKING LOT AT BOUGHTON
AND JANES
0255 PM HEAVY RAIN 3 NE BOLINGBROOK 41.73N 88.04W
07/29/2016 M3.01 INCH DUPAGE IL COCORAHS
RAINFALL IN LAST 45 MINUTES.
0300 PM FLOOD SYCAMORE 41.98N 88.70W
07/29/2016 DEKALB IL PUBLIC
DITCHES AND PARKING LOTS FULL OF WATER ON CORNER OF RT 23
AND BETHANY. REPORT RELAYED VIA SOCIAL MEDIA.
0300 PM FLASH FLOOD DARIEN 41.75N 87.98W
07/29/2016 DUPAGE IL PUBLIC
MULTIPLE ROADS FLOODED INCLUDING CASS AND CLARENDON HILLS
ROADS.
0304 PM HEAVY RAIN 2 WNW VALPARAISO 41.49N 87.09W
07/29/2016 M2.96 INCH PORTER IN COCORAHS
2.96 INCHES OF RAIN IN 1.5 HOURS. ALSO WIND GUST OF 40
MPH AT 211 PM.
0320 PM HEAVY RAIN 1 SE VALPARAISO 41.47N 87.04W
07/29/2016 M1.11 INCH PORTER IN COCORAHS
PAST 30 MINUTES
0345 PM HEAVY RAIN 3 SW MIDWAY AIRPORT 41.75N 87.79W
07/29/2016 M1.07 INCH COOK IL CO-OP OBSERVER
STORM TOTAL THROUGH 345 PM.
0400 PM FLOOD VALPARAISO 41.48N 87.05W
07/29/2016 PORTER IN LAW ENFORCEMENT
MINOR STREET FLOODING.
0440 PM HEAVY RAIN HOMEWOOD 41.56N 87.66W
07/29/2016 M2.59 INCH COOK IL COCORAHS
STORM TOTAL THIS AFTERNOON SO FAR.
0440 PM FLOOD HOMEWOOD 41.56N 87.66W
07/29/2016 COOK IL COCORAHS
SEVERAL INCHES OF WATER ON 183RD...HALSTED AND AT RIDGE
AND RIEGEL ROADS.
0444 PM HEAVY RAIN 4 WSW LISLE 41.77N 88.17W
07/29/2016 M1.76 INCH DUPAGE IL COCORAHS
PAST 3 AND A HALF HOURS.
0444 PM TSTM WND DMG 3 NE NEW MILLFORD 42.21N 89.02W
07/29/2016 WINNEBAGO IL TRAINED SPOTTER
ONE LARGE TREE BLOWN DOWN ON LINDEN ROAD.
0444 PM HEAVY RAIN 1 NW NAPERVILLE 41.77N 88.17W
07/29/2016 M1.76 INCH DUPAGE IL COCORAHS
RAIN FELL IN 3.5 HOURS
0445 PM FLOOD WOODRIDGE 41.74N 88.04W
07/29/2016 DUPAGE IL PUBLIC
SOUTHBOUND ROUTE 53 CLOSED NEAR 83RD STREET DUE TO
FLOODING. VIA SOCIAL MEDIA.
0525 PM HEAVY RAIN 1 NE NORTH AURORA 41.81N 88.32W
07/29/2016 M3.38 INCH KANE IL COCORAHS
RAINFALL OVER ABOUT 3 HOURS BETWEEN 225 PM AND 525 PM
CDT.
0530 PM FLASH FLOOD SOUTH HOLLAND 41.60N 87.60W
07/29/2016 COOK IL PUBLIC
168TH EAST OF STATE STREET WAS CLOSED DUE TO QUICK RISING
WATER.
0555 PM HEAVY RAIN 4 SSE ROCKFORD 42.22N 89.03W
07/29/2016 M2.62 INCH WINNEBAGO IL COCORAHS
RAIN FELL IN PAST 2 HOURS.
0648 PM FLOOD WOODRIDGE 41.74N 88.04W
07/29/2016 DUPAGE IL EMERGENCY MNGR
MULTIPLE ROADS BLOCKED BY FLOOD WATERS ACROSS SOUTHERN
DUPAGE COUNTY. WORST IS GENERALLY ALONG AND SOUTH OF 75TH
STREET.
1000 PM FLOOD DARIEN 41.75N 87.98W
07/29/2016 DUPAGE IL EMERGENCY MNGR
DAMAGE TO AN ELECTRICAL SUBSTATION BECAUSE OF CONTINUED
RISING WATERS.
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MTF
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