Illinois storm reports for July 21, 2017

Name: NOAA storm reports, Illinois, July 21, 2017
Creator: NOAA/NWS Storm Prediction Center

NOAA recorded 7 hail reports, 18 wind reports and 1 tornado report in Illinois on July 21, 2017.

in Illinois; 26
Storm reports: About 24 miles from Chicago, IL; 1.25 in
Largest hail: About 20 miles from Chicago, IL; 90 mph
Highest gust: Highest rating EF1, about 31 miles from Davenport, IA; 1
Tornado reports

Hail, inches

0.75
1
1.5
2
2.5
3+

Dots: reports.

Wind report
Tornado and its path
Surveyed tornado path

Sources: NOAA/NWS Storm Prediction Center reports; damage surveys from the NWS Damage Assessment Toolkit

Hail, inches

0.75
1
1.5
2
2.5
3+

Dots: reports.

Wind report
Tornado and its path
Surveyed tornado path

Source: NOAA/NWS Storm Prediction Center, final severe weather database (from NOAA's Storm Data). Report day: 12:00 UTC on July 21, 2017 to 12:00 UTC the next day. Times are Central.

Select a dot or a path for the report. NWS survey teams walked the shaded paths after the storm; each is drawn at the widest width they found, so it can look wider than the damage at any one spot.

Reports by hour

Hail7, most at 4 PM

Wind18, most at 7 PM

Tornado1, most at 7 PM

Reports per hour, Central time. Each row has its own scale.

Every report

Source: NOAA/NWS Storm Prediction Center.

Time	Rating	Where	Path
7:19 PM	EF1	About 31 miles from Davenport, IA	3.72 mi long, 150 yd wide

Time	Size	Where
4:17 PM	0.75 in	About 36 miles from Rockford, IL
4:25 PM	1.0 in	About 37 miles from Rockford, IL
4:49 PM	1.25 in	About 24 miles from Chicago, IL
4:50 PM	1.0 in	About 20 miles from Chicago, IL
4:55 PM	1.25 in	About 20 miles from Chicago, IL
4:58 PM	1.0 in	About 17 miles from Chicago, IL
5:00 PM	1.25 in	About 20 miles from Chicago, IL

Time	Gust	Where
2:53 PM	69 mph	About 4 miles from Rockford, IL
4:25 PM	70 mph	About 37 miles from Rockford, IL
4:25 PM	81 mph	About 33 miles from Chicago, IL
4:51 PM	63 mph	About 22 miles from Chicago, IL
4:55 PM	90 mph	About 20 miles from Chicago, IL
4:55 PM	90 mph	About 20 miles from Chicago, IL
4:58 PM	74 mph	About 20 miles from Chicago, IL
6:32 PM	58 mph	About 28 miles from Rockford, IL
7:16 PM	58 mph	About 10 miles from Davenport, IA
7:18 PM	58 mph	About 11 miles from Davenport, IA
7:20 PM	58 mph	About 8 miles from Davenport, IA
7:21 PM	70 mph	About 32 miles from Davenport, IA

Show all 18 wind reports

Time	Gust	Where
7:24 PM	70 mph	About 34 miles from Davenport, IA
7:25 PM	71 mph	About 9 miles from Davenport, IA
7:34 PM	58 mph	About 7 miles from Davenport, IA
7:48 PM	58 mph	About 42 miles from Rockford, IL
12:15 AM	75 mph	Near 40.91, -87.73, IL
1:20 AM	63 mph	About 32 miles from Chicago, IL

Cities with reports nearby

Reports within 15 miles of the center of each city we track.

City	Largest hail	Highest gust	Tornado reports
Rockford, IL	None	69 mph	0

Reports are what observers recorded near a location, not a complete record of every storm. They don’t describe conditions at any building.