Overview
Two rounds of thunderstorms moved through the region on Thursday, July 21st. The first grazed northeast Illinois and northwest Indiana, bringing isolated gusty winds and locally heavy rainfall. This also brought rain-cooled air into these areas, including downtown Chicago, which briefly brought relief from heat. The second round of storms was far more widespread and moved southward through the area that evening. Gusty winds and heavy rainfall were the main hazards, with reports of tree damage in isolated locations.
Photos:
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| Shelf Cloud Along Boone IL-Rock WI county line Tyler Sebree-WTVO |
Shelf Cloud S of DeKallb, IL Alex Hoffman |
Shelf Cloud SE of Hinckley, IL Bob Waszak |
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Wind Damage in Streator, IL Streator Fire Department |
Wind Damage in Streator, IL Streator Fire Department |
Radar:
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| Regional Radar Loop: 5:42 PM-12:00 AM CDT | Local Radar Loop (courtesy of NWS Quad Cities) |
Storm Reports
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
833 AM CDT FRI JUL 22 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1210 PM TSTM WND GST 5 SSE BEACH PARK 42.36N 87.81W
07/21/2016 M42.00 MPH LMZ740 IL C-MAN STATION
MEASURED AT WAUKEGAN HARBOR.
1230 PM TSTM WND GST 6 E GLENCOE 42.13N 87.65W
07/21/2016 M40.00 MPH LMZ740 IL BUOY
MEASURED AT WILMETTE BUOY.
1252 PM HEAVY RAIN HOMEWOOD 41.56N 87.66W
07/21/2016 M0.89 INCH COOK IL COCORAHS
RAIN FELL IN 18 MINUTES.
0100 PM HEAVY RAIN 1 SSW HAMMOND 41.61N 87.50W
07/21/2016 M0.97 INCH LAKE IN COCORAHS
RAIN FELL IN 20 MINUTES
0104 PM TSTM WND DMG HAMMOND 41.62N 87.49W
07/21/2016 LAKE IN PUBLIC
TWO LARGE TREES DOWNED IN RESIDENTIAL NEIGHBORHOOD NEAR
165TH STREET AND CLINE AVENUE. TIME ESTIMATED PER RADAR.
0108 PM TSTM WND GST HAMMOND 41.62N 87.49W
07/21/2016 E50.00 MPH LAKE IN TRAINED SPOTTER
0114 PM TSTM WND GST GARY 41.60N 87.34W
07/21/2016 M62.00 MPH LAKE IN AWOS
MEASURED AT GARY AIRPORT.
0138 PM TSTM WND DMG CHESTERTON 41.60N 87.06W
07/21/2016 PORTER IN EMERGENCY MNGR
NUMEROUS BRANCHES DOWN OFF TREES.
0138 PM TSTM WND DMG SOUTH HAVEN 41.54N 87.13W
07/21/2016 PORTER IN EMERGENCY MNGR
SEVERAL MEDIUM SIZE TREE BRANCHES AND POWER LINES DOWN.
TIME ESTIMATED OFF RADAR.
0140 PM TSTM WND GST 3 NNW BURNS HARBOR 41.65N 87.15W
07/21/2016 M39.00 MPH PORTER IN BUOY
0215 PM HEAVY RAIN 1 SE VALPARAISO 41.47N 87.04W
07/21/2016 M1.32 INCH PORTER IN COCORAHS
RAIN FELL IN 20 MINUTES.
0704 PM TSTM WND DMG RICHMOND 42.48N 88.31W
07/21/2016 MCHENRY IL LAW ENFORCEMENT
TREES DOWN RT 173 AND KEYSTONE ROAD.
0724 PM TSTM WND DMG WOODSTOCK 42.31N 88.44W
07/21/2016 MCHENRY IL LAW ENFORCEMENT
TREES DOWN NELSON AND ROSE FARM ROADS.
0734 PM TSTM WND DMG RICHMOND 42.48N 88.31W
07/21/2016 MCHENRY IL LAW ENFORCEMENT
TREES DOWN PIONEER AND HART ROADS.
0743 PM TSTM WND GST SOUTH BELOIT 42.48N 89.03W
07/21/2016 M60.00 MPH WINNEBAGO IL AMATEUR RADIO
HAYES AND LISTEN AVENUES.
0745 PM TSTM WND DMG LINDENHURST 42.42N 88.03W
07/21/2016 LAKE IL PUBLIC
SMALL TO MEDIUM SIZE TREE LIMBS BLOWN DOWN. TIME
ESTIMATED.
0758 PM TSTM WND DMG ELGIN 42.04N 88.29W
07/21/2016 KANE IL PUBLIC
POWER LINES BLOWN DOWN. TIME ESTIMATED.
0758 PM TSTM WND DMG ELGIN 42.04N 88.29W
07/21/2016 KANE IL TRAINED SPOTTER
TREE LIMBS 4 TO 6 INCH DIAMETER BLOWN DOWN. ESTIMATED
WINDS 50 MPH.
0810 PM TSTM WND DMG DURAND 42.44N 89.33W
07/21/2016 WINNEBAGO IL PUBLIC
TWO TREES DOWN ACROSS ROAD WITH ONE UTILITY POLE PULLED
DOWN BY TREES. TIME ESTIMATED. VIA FACEBOOK.
0850 PM TSTM WND GST LELAND 41.61N 88.80W
07/21/2016 E50.00 MPH LA SALLE IL TRAINED SPOTTER
WIND GUSTS ESTIAMTED 45-50 MPH
0900 PM TSTM WND GST 2 SE NAPERVILLE 41.74N 88.13W
07/21/2016 M50.00 MPH DUPAGE IL TRAINED SPOTTER
0902 PM TSTM WND GST BATAVIA 42.19N 87.87W
07/21/2016 M51.00 MPH LAKE IL TRAINED SPOTTER
0902 PM TSTM WND GST BATAVIA 41.85N 88.30W
07/21/2016 M51.00 MPH KANE IL TRAINED SPOTTER
0907 PM TSTM WND GST MIDWAY AIRPORT 41.78N 87.75W
07/21/2016 M47.00 MPH COOK IL ASOS
0908 PM LIGHTNING N NAPERVILLE 41.76N 88.15W
07/21/2016 DUPAGE IL EMERGENCY MNGR
STRUCK A GAS LINE STARTING A FIRE.
0915 PM HEAVY RAIN WOODSTOCK 42.31N 88.44W
07/21/2016 M1.07 INCH MCHENRY IL CO-OP OBSERVER
STORM TOTAL 1.07 INCHES.
0951 PM TSTM WND GST 5 SSE BEACH PARK 42.36N 87.81W
07/21/2016 M52.00 MPH LMZ740 IL C-MAN STATION
MEASURED AT WAUKEGAN HARBOR.
1002 PM LIGHTNING CRESTWOOD 41.65N 87.74W
07/21/2016 COOK IL PUBLIC
TRANSFORMER STRUCK BY LIGHTNING.
1002 PM TSTM WND DMG TINLEY PARK 41.57N 87.80W
07/21/2016 COOK IL PUBLIC
POWER LINES BLOWN DOWN.
1018 PM TSTM WND DMG STREATOR 41.13N 88.83W
07/21/2016 LA SALLE IL 911 CALL CENTER
MULTIPLE POWER POLES...POWER LINES...AND TREES DOWN.
SEVERAL TREES ON HOUSES.
1020 PM TSTM WND GST 3 NNW BURNS HARBOR 41.65N 87.15W
07/21/2016 M39.00 MPH PORTER IN C-MAN STATION
1130 PM HEAVY RAIN 1 NE NORTH AURORA 41.81N 88.32W
07/21/2016 M1.78 INCH KANE IL COCORAHS
RAINFALL TOTAL THUS FAR.
&&
$$
MTF
Rain Reports:
Public Information Statement
National Weather Service Chicago IL
1155 AM CDT Fri Jul 22 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 Friday(07/22/16)...
Illinois Rain
Location (County): fall (inches)
Plainfield 5SW (Kendall).....................2.43
Minooka (Grundy).............................2.11
Channahon 1NNE (Will)........................2.00
Joliet 2n (Will).............................2.00
Oswego 5SSE (Kendall)........................1.95
North Aurora 2NE (Kane)......................1.88
Plainfield 3ESE (Will).......................1.87
Rochelle (Ogle)..............................1.79
Coal City 3N (Grundy)........................1.77
Byron 3N (Ogle)..............................1.77
Joliet 3WNW (Will)...........................1.75
Oregon (Ogle)................................1.75
Batavia 2WNW (Kane)..........................1.71
Plainfield 2SSE (Will).......................1.71
Yorkville 2SE (Kendall)......................1.71
Aurora (Kane)................................1.70
Channahon 2SSE (Will)........................1.68
Joliet Lock/dam (Will).......................1.68
Montgomery 1SSE (Kendall)....................1.66
Lockport 3ESE (Will).........................1.66
Belvidere (Boone)............................1.65
Yorkville 2SSE (Kendall).....................1.64
Plainfield 3SE (Will)........................1.64
Aurora 4NE (Du Page).........................1.63
Woodstock 4SW (McHenry)......................1.62
Roscoe 2ESE (Winnebago)......................1.62
Roscoe 2se (Winnebago).......................1.62
Homewood (Cook)..............................1.59
Rockford 6S (Winnebago)......................1.59
Steward (Lee)................................1.58
Coal City 4NNW (Grundy)......................1.56
Carbon Hill 3.1N (Grundy)....................1.56
Batavia (Kane)...............................1.55
Wilmington 6NW (Will)........................1.55
Cortland (De Kalb)...........................1.54
Rockford 3NE (Winnebago).....................1.54
Geneva 1SSW (Kane)...........................1.53
Batavia 1WSW (Kane)..........................1.52
Ashton (Lee).................................1.52
Somonauk 2NE (De Kalb).......................1.48
De Kalb (De Kalb)............................1.47
De Kalb (De Kalb)............................1.45
Romeoville (Will)............................1.45
Bourbonnais (Kankakee).......................1.44
Joliet 2WNW (Will)...........................1.44
Morris 2N (Grundy)...........................1.42
Geneva 2WSW (Kane)...........................1.42
Sugar Grove 1ENE (Kane)......................1.38
Elk Grove Village 2WSW (Cook)................1.37
Aurora (Kane)................................1.36
North Utica 6N (La Salle)....................1.36
Plainfield 1SW (Will)........................1.36
Manteno 2SSE (Kankakee)......................1.35
Lockport 1SE (Will)..........................1.35
Joliet (Will)................................1.35
Rockford (Winnebago).........................1.35
Woodstock 5nw (McHenry)......................1.34
Rockford 2ENE (Winnebago)....................1.33
Elgin 8WSW (Kane)............................1.31
Genoa (De Kalb)..............................1.30
St. Charles 6NW (Kane).......................1.30
Paw Paw (Lee)................................1.30
Lansing (Cook)...............................1.29
La Salle (La Salle)..........................1.29
Elmhurst (Du Page)...........................1.28
Flossmoor (Cook).............................1.27
Streamwood 1W (Cook).........................1.27
Wilmington 3SE (Will)........................1.26
Rochelle (Ogle)..............................1.26
Park Ridge 1WNW (Cook).......................1.25
Plano (Kendall)..............................1.25
Sugar Grove 1NE (Kane).......................1.25
Libertyville 2ESE (Lake).....................1.24
Sublette (Lee)...............................1.23
Woodstock (McHenry)..........................1.23
St. Charles (Kane)...........................1.20
Plainfield 3NNW (Will).......................1.19
Park Ridge (Cook)............................1.18
Braceville (Grundy)..........................1.18
Pontiac 1SE (Livingston).....................1.18
Woodstock 1SSW (McHenry).....................1.18
Lansing (Cook)...............................1.18
Aurora 3W (Kane).............................1.17
Highwood 1S (Lake)...........................1.17
Plainfield (Will)............................1.17
Aurora 4SE (Du Page).........................1.16
Naperville 1NW (Du Page).....................1.16
Roselle 1W (Du Page).........................1.16
Mendota (La Salle)...........................1.16
Park Forest (Cook)...........................1.16
Amboy (Lee)..................................1.15
Naperville 4SSW (Will).......................1.15
Winfield (Du Page)...........................1.14
Streator (Livingston)........................1.13
Elburn (Kane)................................1.12
Peru 1SW (La Salle)..........................1.12
Mendota 2SE (La Salle).......................1.12
Marseilles (La Salle)........................1.12
West Chicago (Du Page).......................1.11
Carol Stream (Du Page).......................1.11
Morris 2SSE (Grundy).........................1.11
Algonquin 2W (McHenry).......................1.11
New Lenox 3E (Will)..........................1.11
Elmhurst 2SE (Du Page).......................1.10
Morris 6ESE (Grundy).........................1.10
Montgomery 2SSE (Kendall)....................1.10
Elmhurst 1ESE (Du Page)......................1.09
Lisle 1SE (Du Page)..........................1.09
Arlington Heights 1SW (Cook).................1.08
Naperville 2ESE (Du Page)....................1.07
Roselle 1ESE (Du Page).......................1.07
Momence 6SSW (Kankakee)......................1.07
Algonquin 1N (McHenry).......................1.07
Cary (McHenry)...............................1.07
Peru (La Salle)..............................1.07
Manhattan 1ESE (Will)........................1.06
Rockford 1NW (Winnebago).....................1.06
Earlville 3S (La Salle)......................1.05
Elgin (Kane).................................1.04
Harvard (McHenry)............................1.04
Lincolnwood 2E (Cook)........................1.04
Lake Bluff 1W (Lake).........................1.04
Ohare (Cook).................................1.04
Pontiac (Livingston).........................1.04
Bolingbrook 3NE (Du Page)....................1.03
Mendota 1N (La Salle)........................1.03
Homer Glen 1ENE (Will).......................1.03
St Anne (Kankakee)...........................1.03
Downers Grove 0.4NNE (Du Page)...............1.02
Amboy (Lee)..................................1.02
New Lenox 2SE (Will).........................1.02
Barrington (Lake)............................1.01
Schaumburg 2E (Cook).........................1.01
Bannockburn (Lake)...........................1.01
Sheridan 3SSE (La Salle).....................1.01
Wonder Lake 1WNW (McHenry)...................1.01
Mundelein (Lake).............................1.01
Polo (Ogle)..................................1.01
Lisle Morton Arb (Du Page)...................1.01
Morris (Grundy)..............................1.00
Pontiac 1ESE (Livingston)....................1.00
Ottawa (La Salle)............................1.00
Mundelein 2WNW (Lake)........................0.99
Streator 1WSW (La Salle).....................0.99
Lisle (Du Page)..............................0.98
Villa Park 1NW (Du Page).....................0.98
Mazon 0.5ENE (Grundy)........................0.98
Elgin 2WNW (Kane)............................0.98
Gilberts (Kane)..............................0.98
Manhattan 2SE (Will).........................0.98
Morris (Grundy)..............................0.98
Elk Grove Village 1ESE (Cook)................0.97
Downers Grove 1S (Du Page)...................0.97
Streator 4ENE (La Salle).....................0.97
Marseilles 5WNW (La Salle)...................0.97
Glen Ellyn (Du Page).........................0.95
Glencoe (Cook)...............................0.95
Winthrop Harbor 1SSW (Lake)..................0.95
Ottawa 1NW (La Salle)........................0.95
Lincolnwood 3E (Cook)........................0.94
Riverwoods (Lake)............................0.94
Oglesby 1ESE (La Salle)......................0.94
New Lenox 4SE (Will).........................0.94
Monee (Will).................................0.94
Hebron (McHenry).............................0.93
Harwood Heights 2NNE (Cook)..................0.93
Crete 3E (Will)..............................0.93
Dwight (Livingston)..........................0.92
Lisbon 4NE (Kendall).........................0.92
Bonfield 4WSW (Kankakee).....................0.92
Ottawa 2N (La Salle).........................0.92
Mchenry (McHenry)............................0.92
Oak Park 2S (Cook)...........................0.90
Lake Zurich (Lake)...........................0.90
Geneva 4WSW (Kane)...........................0.89
Antioch 4W (Lake)............................0.88
Palos Park 1SW (Cook)........................0.88
Glen Ellyn 2SSE (Du Page)....................0.88
Chicago 6NNE (Cook)..........................0.87
Capron (Boone)...............................0.86
Hoffman Estates 5W (Cook)....................0.86
Park Forest 1SW (Cook).......................0.86
Buffalo Grove 2N (Lake)......................0.86
Winthrop Harbor (Lake).......................0.86
Dwight 4NNW (Grundy).........................0.85
Sterling 4NE (Lee)...........................0.85
Lake Forest 2NNE (Lake)......................0.85
Gurnee 2W (Lake).............................0.84
Botanic Gardens (Cook).......................0.83
Oak Park 1SW (Cook)..........................0.82
Peotone (Will)...............................0.82
Zion (Lake)..................................0.81
Alsip (Cook).................................0.80
Oak Park 1NNE (Cook).........................0.80
Elgin 2W (Kane)..............................0.80
Manhattan (Will).............................0.80
Midway Coop (Cook)...........................0.80
Burnham-hegewisch 2NNW (Cook)................0.79
Oak Lawn (Cook)..............................0.78
Chicago 5NE (Cook)...........................0.78
Coal City (Grundy)...........................0.78
Beecher 3SSE (Will)..........................0.78
Chicago 6ESE (Cook)..........................0.77
Lake Villa 2WSW (Lake).......................0.77
Bridgeview 1NNW (Cook).......................0.76
Palatine 1E (Cook)...........................0.76
Oak Lawn 2WNW (Cook).........................0.76
Winnetka 1ESE (Cook).........................0.75
Darien (Du Page).............................0.75
Worth (Cook).................................0.74
Midway (Cook)................................0.74
La Grange Park 1SSW (Cook)...................0.72
Lake Villa 1SSW (Lake).......................0.72
Seneca 1NNE (La Salle).......................0.71
Chicago Ridge (Cook).........................0.70
Dixon 3NNW (Lee).............................0.70
Seneca 2SSW (La Salle).......................0.70
Watseka (Iroquois)...........................0.70
Lombard 1NNW (Du Page).......................0.68
Lakemoor 2SE (Lake)..........................0.68
Lakemoor 2NW (McHenry).......................0.68
Burr Ridge 2SW (Du Page).....................0.66
Westmont (Du Page)...........................0.64
Wheeling (Cook)..............................0.62
Dixon (Lee)..................................0.61
Oak Lawn 2SE (Cook)..........................0.61
Ashkum 5.6E (Iroquois).......................0.61
Chebanse (Kankakee)..........................0.61
Fox Lake 2SE (Lake)..........................0.60
Cicero 2SSW (Cook)...........................0.58
Waukegan 2N (Lake)...........................0.54
Beach Park 1W (Lake).........................0.50
Wadsworth 1SSE (Lake)........................0.50
Milford (Iroquois)...........................0.50
Waukegan (Lake)..............................0.49
Watseka 6.9WNW (Iroquois)....................0.41
Gibson 6NE (Ford)............................0.32
Gibson 3WNW (Ford)...........................0.30
Buckley (Iroquois)...........................0.30
Cissna Park 1S (Iroquois)....................0.23
Paxton (Ford)................................0.20
Indiana Rain
Location (County): fall (inches)
Valparaiso 1SE (Porter)......................2.52
Wheatfield 3S (Jasper).......................1.94
Portage 3E (Porter)..........................1.92
(w9opr)Wheatfield 1ENE (Jasper)..............1.85
(wv90)Hobart 1ENE (Lake).....................1.83
Hobart 2E (Lake).............................1.80
Valparaiso 2NW (Porter)......................1.71
Valparaiso 2WNW (Porter).....................1.58
Crown Point 2WSW (Lake)......................1.55
Winfield 1NE (Lake)..........................1.54
Crown Point 1N (Lake)........................1.49
Hobart 1NNW (Lake)...........................1.45
Crown Point (Lake)...........................1.43
Schererville 2ESE (Lake).....................1.35
Valparaiso 6WSW (Porter).....................1.35
Hobart 1SSW (Lake)...........................1.34
Portage 1ESE (Porter)........................1.30
Gary 5ENE (Lake).............................1.28
Porter 1S (Porter)...........................1.27
De Motte 3SE (Jasper)........................1.25
Wheatfield 5W (Jasper).......................1.24
Gary 4SSW (Lake).............................1.24
Hebron 1NW (Porter)..........................1.23
Valparaiso 4SW (Porter)......................1.22
Rensselaer 8NE (Jasper)......................1.15
Rensselaer 10NNE (Jasper)....................1.14
Valparaiso 3WSW (Porter).....................1.12
Valparaiso (Porter)..........................1.08
Chesterton 4E (Porter).......................1.06
Rensselaer 2N (Jasper).......................1.04
Valparaiso 6SSW (Porter).....................1.04
Dyer 1WNW (Lake).............................1.02
Valparaiso 5WSW (Porter).....................1.02
(w9mal)Merrillville 2NNW (Lake)..............0.98
Rensselaer 8ENE (Jasper).....................0.94
Rensselaer 2SSW (Jasper).....................0.91
Rensselaer (Jasper)..........................0.75
De Motte 6S (Jasper).........................0.65
De Motte 1NNW (Jasper).......................0.64
Lake Village (Newton)........................0.64
De Motte 1SSW (Jasper).......................0.61
Remington (Jasper)...........................0.61
Rensselaer 4N (Jasper).......................0.60
Kentland (Newton)............................0.48
Kentland 2SSE (Newton).......................0.47
Remington (Jasper)...........................0.46
Morocco (Newton).............................0.46
Rensselaer 5NW (Jasper)......................0.38
Brook 4W (Newton)............................0.31
Mount Ayr 2NNE (Newton)......................0.23
Environment
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| Environmental Analysis at 5 pm Ahead of Main Thunderstorm Complex | 7 pm NWS Davenport, IA Weather Balloon Data |
Heat Indices:
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| Maximum Heat Indices from July 21st |
Public Information Statement National Weather Service Chicago IL 520 PM CDT THU JUL 21 2016 /620 PM EDT THU JUL 21 2016/ ...Maximum Heat Index Reports From Thursday July 21st... Location Temp Time/Date Provider --------------------------------------------------------------- Gary Airport 117 F 1245 PM 07/21 AWOS Pontiac Airport 116 F 0135 PM 07/21 AWOS Joliet Airport 114 F 0435 PM 07/21 AWOS Rockford Airport 110 F 0254 PM 07/21 ASOS De Kalb Airport 109 F 0335 PM 07/21 AWOS Morris Airport 109 F 0355 PM 07/21 AWOS Sugar Grove - Aurora Airport 109 F 0152 PM 07/21 ASOS Rochelle Airport 108 F 0355 PM 07/21 AWOS Peru Airport 108 F 1255 PM 07/21 AWOS Rensselaer Airport 103 F 0135 PM 07/21 AWOS Dupage Airport 103 F 0152 PM 07/21 ASOS Chicago Midway 103 F 1253 PM 07/21 ASOS Romeoville - Lewis Aiprort 103 F 0355 PM 07/21 AWOS Chicago O`Hare 102 F 1251 PM 07/21 ASOS Valparaiso Airport 101 F 1204 PM 07/21 ASOS Wheeling - Chi Exec Airport 101 F 1052 AM 07/21 ASOS Lansing Airport 101 F 1235 PM 07/21 AWOS Waukegan Airport 99 F 1055 AM 07/21 ASOS Chicago Northerly Island 97 F 1200 PM 07/21 NWS Observations are collected from a variety of sources with varying equipment and exposures. Not all data listed are considered official. $$ MTF
Additional Information
The Forecast
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| SPC Day 1 Categorical Outlook | SPC Day 1 Tornado Outlook | SPC Day 1 Hail Outlook | SPC Day 1 Wind Outlook |
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| NWS Chicago Graphical NOWcast issued at 5:45 pm |
Summaries From Other NWS Offices
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