Widespread life-threatening flash and urban flooding continues in south-central Texas, with considerable flooding impacts possible across central Texas. Wildfire smoke is impacting air quality across much of the Great Lakes region into southern New England and the Mid-Atlantic. Monsoonal thunderstorms may produce isolated to scattered flash flooding across the Southwest into the Great Basin. Read More >
Overview
Several rounds of thunderstorms producing heavy rainfall occurred from the evening of August 31st through the early morning of September 2nd. The most significant rainfall amounts occurred the evening of September 1st through the early morning of September 2nd over far northern Illinois. Additional heavy rainfall is expected late Sunday afternoon through at least Monday morning, especially into portions of northwest and north central Illinois. Finally, there was a very isolated area of wind damage over parts of the far northwest side of Chicago during the Saturday morning thunderstorms.
Fast Facts
Radar:
Regional Radar Loop
 |
| Radar Loop from 7 pm Aug. 31 to 11:30 pm Sept 3 |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 112 PM CDT SUN SEP 2 2018 ..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON... ..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE.... ..REMARKS.. 0846 AM HEAVY RAIN 1 E ROCKFORD 42.27N 89.04W 09/02/2018 M2.00 INCH WINNEBAGO IL TRAINED SPOTTER 12 HOUR TOTAL. 0846 AM HEAVY RAIN 4 SSE LOVES PARK 42.28N 88.97W 09/02/2018 M2.95 INCH WINNEBAGO IL TRAINED SPOTTER 24 HOUR TOTAL NEAR TULIP AND TRAVERTINE. 0800 AM HEAVY RAIN BULL VALLEY 42.31N 88.35W 09/02/2018 M4.16 INCH MCHENRY IL COCORAHS 24 HOUR RAIN TOTAL. FIELDS FLOODED WITH ESTIMATED 6-8 INCHES STANDING WATER. 0753 AM HEAVY RAIN LIBERTYVILLE 42.28N 87.97W 09/02/2018 M2.28 INCH LAKE IL PUBLIC 36 HOUR RAINFALL AMOUNT RELAYED VIA TWITTER. 0740 AM HEAVY RAIN HUNTLEY 42.17N 88.42W 09/02/2018 M3.15 INCH MCHENRY IL TRAINED SPOTTER RAINFALL TOTAL SINCE EARLY SATURDAY MORNING. 0954 PM HEAVY RAIN LIBERTYVILLE 42.28N 87.97W 09/01/2018 M0.51 INCH LAKE IL EMERGENCY MNGR RAINFALL OF 0.51 INCHES WAS MEASURED IN 8 MINUTES. 0815 AM TSTM WND DMG 5 N FOREST PARK 41.94N 87.82W 09/01/2018 COOK IL BROADCAST MEDIA SEVERAL LARGE TREES AND TREE LIMBS DOWN IN A VERY LOCALIZED AREA OF THE BELMONT HEIGHTS NEIGHBORHOOD ON THE FAR NORTHWEST SIDE OF CHICAGO. MOST OF THE DAMAGE FOCUSED NEAR THE 3500 BLOCK OF NORTH OPAL AVENUE. TIME ESTIMATED BY RADAR. && $$
Rain Reports
 |
| Observed Rainfall September 1-2 |
Public Information Statement
National Weather Service Chicago IL
1043 AM CDT Sun Sep 02 2018
...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 Sunday(09/02/18)...
Illinois Rain
Location (County): fall (inches)
Marengo (McHenry)............................5.14
Woodstock (McHenry)..........................4.08
Roscoe 2SE (Winnebago).......................2.89
Capron (Boone)...............................2.80
McHenry (McHenry)............................2.30
Mundelein (Lake).............................2.24
Rockford (Winnebago).........................2.10
Winnebago 1SE (Winnebago)....................1.56
Wheeling (Cook)..............................1.47
Genoa (De Kalb)..............................1.38
Elgin (Kane).................................1.21
Lake Zurich (Lake)...........................1.18
Waukegan (Lake)..............................1.15
Elgin (Kane).................................0.78
Paw Paw (Lee)................................0.78
Botanic Gardens (Cook).......................0.74
Steward (Lee)................................0.52
Westmont (Du Page)...........................0.46
Shabbona (De Kalb)...........................0.43
Aurora (Kane)................................0.37
Batavia (Kane)...............................0.35
West Chicago (Du Page).......................0.35
Elburn (Kane)................................0.35
Rochelle (Ogle)..............................0.33
De Kalb (De Kalb)............................0.32
Mendota (La Salle)...........................0.29
Dekalb (De Kalb).............................0.26
Romeoville (Will)............................0.25
Aurora (Kane)................................0.24
Willow Springs (Cook)........................0.20
Morris (Grundy)..............................0.18
Romeoville (Will)............................0.17
Marseilles (La Salle)........................0.16
Ohare (Cook).................................0.16
Joliet 2n (Will).............................0.13
Midway Coop (Cook)...........................0.13
Dwight (Livingston)..........................0.10
Peru (La Salle)..............................0.10
$$
 |
| Observed Rainfall August 31-September 2 |
Public Information Statement
National Weather Service Chicago/Romeoville IL
1035 AM CDT Sun Sep 02 2018
...2-Day Rainfall Round-up...
The following are rainfall amounts for the previous 2 days as
measured in the morning by NWS Cooperative observers and CoCoRaHS
observers. Observations are usually taken between 6 AM and 8 AM.
2-day rain totals for Sunday (09/02/18)
as of 10:25 AM CDT
ILLINOIS 2-Day rainfall
Location (County): Amt(inches) reports
Marengo (McHenry)............................5.78 (2)
Woodstock (McHenry)..........................4.08 (1)
Roscoe 2SE (Winnebago).......................2.92 (2)
Capron (Boone)...............................2.80 (2)
McHenry (McHenry)............................2.34 (2)
Mundelein (Lake).............................2.24 (1)
Rockford (Winnebago).........................2.16 (2)
Bourbonnais (Kankakee).......................2.05 (1)
Elmwood Park 1ESE (Cook).....................1.99 (1)
Elmwood Park 1NNW (Cook).....................1.70 (1)
Winnebago 1SE (Winnebago)....................1.65 (2)
Wheeling (Cook)..............................1.50 (2)
Manteno 2NW (Kankakee).......................1.50 (1)
Genoa (De Kalb)..............................1.48 (2)
Mazon 0.5ENE (Grundy)........................1.34 (1)
Midway Coop (Cook)...........................1.29 (2)
Chebanse (Kankakee)..........................1.27 (1)
Coal City (Grundy)...........................1.26 (1)
Elgin (Kane).................................1.25 (2)
Wilmington 3SE (Will)........................1.24 (1)
Berwyn 1NW (Cook)............................1.24 (1)
Oak Park 1SW (Cook)..........................1.21 (1)
Lake Zurich (Lake)...........................1.18 (1)
Dwight 4NNW (Grundy).........................1.18 (1)
Waukegan (Lake)..............................1.15 (1)
Oak Park 1NNE (Cook).........................1.14 (1)
Midway (Cook)................................1.11 (2)
Oak Park 2S (Cook)...........................1.10 (1)
Cicero 2SSW (Cook)...........................1.10 (1)
Dixon 3NNW (Lee).............................1.04 (1)
Morris 6ESE (Grundy).........................0.94 (1)
Oak Lawn 2WNW (Cook).........................0.92 (1)
Oak Lawn 1N (Cook)...........................0.91 (1)
Flossmoor (Cook).............................0.90 (1)
Bridgeview 1NNW (Cook).......................0.90 (1)
Oak Lawn 2NW (Cook)..........................0.89 (1)
Botanic Gardens (Cook).......................0.87 (2)
Paw Paw (Lee)................................0.86 (2)
Coal City 4NNW (Grundy)......................0.82 (2)
Kankakee (Kankakee)..........................0.82 (1)
Chicago Ridge (Cook).........................0.81 (1)
Carbon Hill 3.1N (Grundy)....................0.79 (1)
Harwood Heights (Cook).......................0.79 (1)
Worth (Cook).................................0.79 (1)
Glen Ellyn (Du Page).........................0.79 (1)
Elgin (Kane).................................0.78 (1)
Coal City 3N (Grundy)........................0.75 (1)
Midlothian (Cook)............................0.75 (1)
Homewood (Cook)..............................0.67 (1)
Flossmoor 1ESE (Cook)........................0.67 (1)
Alsip (Cook).................................0.67 (1)
Park Forest 1NNE (Cook)......................0.66 (1)
Park Ridge (Cook)............................0.61 (1)
Park Forest (Cook)...........................0.60 (1)
Steward (Lee)................................0.59 (2)
Peotone (Will)...............................0.58 (2)
Oak Lawn 2SE (Cook)..........................0.57 (1)
Oak Lawn (Cook)..............................0.56 (1)
Shabbona (De Kalb)...........................0.55 (2)
Chicago 6ESE (Cook)..........................0.55 (1)
Naperville 1NW (Du Page).....................0.54 (1)
Watseka 6.9WNW (Iroquois)....................0.53 (1)
Manhattan 2SE (Will).........................0.51 (1)
Riverwoods (Lake)............................0.51 (1)
Manhattan 1ESE (Will)........................0.49 (1)
Midlothian 1SE (Cook)........................0.49 (1)
Ravenswood Manor (Cook)......................0.47 (1)
Westmont (Du Page)...........................0.46 (1)
De Kalb (De Kalb)............................0.46 (2)
Herscher 3E (Kankakee).......................0.43 (1)
Rochelle (Ogle)..............................0.39 (2)
Manhattan (Will).............................0.39 (2)
Lake Forest 2NNE (Lake)......................0.39 (1)
Manhattan 5ENE (Will)........................0.37 (1)
Bannockburn (Lake)...........................0.37 (1)
Aurora (Kane)................................0.37 (2)
Mendota (La Salle)...........................0.36 (2)
Countryside 1ENE (Cook)......................0.35 (1)
Park Ridge 1WNW (Cook).......................0.35 (1)
Elburn (Kane)................................0.35 (1)
West Chicago (Du Page).......................0.35 (1)
Batavia (Kane)...............................0.35 (1)
Pontiac 1SE (Livingston).....................0.34 (1)
Morris 2SSE (Grundy).........................0.34 (1)
Lincolnwood 2E (Cook)........................0.34 (1)
Morris (Grundy)..............................0.34 (2)
Ashkum 5.6E (Iroquois).......................0.33 (1)
Winnetka 1ESE (Cook).........................0.33 (1)
Rogers Park 2SW (Cook).......................0.32 (1)
Evanston 1N (Cook)...........................0.31 (1)
Dekalb (De Kalb).............................0.31 (2)
Lansing (Cook)...............................0.30 (2)
Homer Glen 1ENE (Will).......................0.30 (1)
New Lenox 2SE (Will).........................0.29 (1)
New Lenox 3ENE (Will)........................0.27 (1)
Palos Park 1SW (Cook)........................0.27 (1)
Paxton (Ford)................................0.26 (2)
Monee (Will).................................0.25 (1)
Romeoville (Will)............................0.25 (2)
INDIANA 2-Day rainfall
Location (County): Amt(inches) reports
Winfield 1NE (Lake)..........................0.80 (1)
Portage 1ESE (Porter)........................0.66 (1)
Valparaiso 2WSW (Porter).....................0.55 (1)
Crown Point (Lake)...........................0.54 (2)
Valparaiso 6NW (Porter)......................0.44 (1)
Valparaiso 2WNW (Porter).....................0.44 (1)
Hobart 2E (Lake).............................0.44 (1)
Valparaiso 6WSW (Porter).....................0.43 (1)
(w9mal)Merrillville 2NNW (Lake)..............0.43 (1)
Valparaiso 2NW (Porter)......................0.39 (1)
Portage 3E (Porter)..........................0.37 (1)
Hebron 1NE (Porter)..........................0.36 (1)
Valparaiso 4SW (Porter)......................0.36 (1)
Porter 1S (Porter)...........................0.35 (1)
Kentland 2SSE (Newton).......................0.35 (1)
Schererville 1E (Lake).......................0.33 (1)
Dyer 1WNW (Lake).............................0.33 (1)
Valparaiso 2N (Porter).......................0.31 (1)
De Motte 6S (Jasper).........................0.30 (1)
Valparaiso 3WSW (Porter).....................0.29 (1)
Hebron 4NE (Porter)..........................0.28 (1)
Gary 5ENE (Lake).............................0.27 (1)
Crown Point 2WSW (Lake)......................0.27 (1)
Schererville 1E (Lake).......................0.26 (1)
Fair Oaks 6SW (Newton).......................0.25 (1)
Munster 2NNW (Lake)..........................0.25 (1)
$$
4-Day Rain Total Map
 |
| Observed Rainfall from 7 am August 31- 7 am September 4 |
 |
Media use of NWS Web News Stories is encouraged! Please acknowledge the NWS as the source of any news information accessed from this site. |
|
Follow us on X
Follow us on Facebook
Follow us on YouTube
LOT RSS Feed