Radar:       Or click here for map
Radar: Detroit MI
42.68 N - 83.47W
Period: 1980 - 2006      Range: 124 nm

Database Overview
All reports in the domain All severe weather reports during the period are plotted. Blue dots represent damaging wind, green dots represent large hail, and red dots represent tornadoes. [Click to enlarge]
  All Rpts Sig Rpts Avg Days
Hail
3599
103 26
Wind
7626
247 36
Tornadoes
537
111 10
Total
11762
461 45
Significant severe reports Significant severe weather reports during the period are plotted. Only tornadoes F2 or stronger, wind gusts of 65 knots or stronger, and hail of 2" diameter or larger are plotted. [Click to enlarge]
Category
Rank*
Freq/mi2
Any Severe
59
1:111
Sig Severe
67
1:2,829
Tornadoes
N/A
1:2,429
F2+ Torn
54
1:11,750
* Compared to 141 national radar coverage areas studied.

Annual Report Information
Annual severe weather reports
Plot of annual severe weather reports in the search area. The dashed magenta line denotes a 5 year running average of all reports.

20 year report increase: 210%
10 year report increase: 122%
5 year report increase: 41%

See annual table below

Daily Report Information
Annual severe weather reports
Plot of daily severe weather reports in the search area. Lines denote a 7 day running mean.

Maximum daily value:
4.6 on 18 Jul

Primary Season:
May 02 - Aug 31

See monthly table below

Hourly Report Information
Annual severe weather reports
Plot of hourly severe weather reports in the search area. Values are in percent of total, and have been rounded to the nearest hour (UTC).

Maximum hourly value:
12% at 22 UTC

See hourly table below

Climatological Threat Potential
Threat
Avg Prob of Occurrence
Return Interval
Natl Rank
Any Tornado
0.012%
8160 yrs
67
F2+ Tornado
0.010%
10520 yrs
67
This table represents the average annual probability and return interval of each event for any point within the search domain.

Read details of computational method

Annual Totals
Year
Hail
Wind
Tornado
Total
 
Rpt
Days
Rpt
Days
Rpt
Days
Rpt
Days
1980
58
17
186
32
29
16
116
37
1981
13
7
54
21
5
3
23
22
1982
45
15
117
19
17
9
79
28
1983
86
15
283
30
22
12
130
34
1984
31
12
79
29
20
12
71
39
1985
103
16
158
22
13
9
129
31
1986
72
21
165
36
34
19
140
46
1987
30
16
196
31
16
13
62
38
1988
75
22
198
35
19
10
113
40
1989
32
17
128
30
19
13
70
38
1990
33
16
141
21
23
12
79
27
1991
78
24
320
39
29
10
136
46
1992
66
24
262
32
52
16
170
42
1993
61
22
168
29
8
7
77
37
1994
159
30
239
37
12
8
183
48
1995
76
27
272
41
8
5
92
48
1996
120
35
244
41
14
8
148
56
1997
118
30
330
39
21
5
160
45
1998
270
36
595
39
28
16
326
52
1999
165
28
385
40
15
9
195
45
2000
292
30
381
46
16
9
324
53
2001
198
39
356
53
41
11
280
66
2002
145
39
394
53
22
6
189
62
2003
359
42
559
47
17
12
393
55
2004
326
45
489
45
22
10
370
60
2005
164
32
523
38
3
3
170
48
2006
424
50
404
49
12
9
448
70
AVG
133
26
282
36
20
10
436
45


Violent Tornadoes
Date
F
Deaths
Injuries
2002 10-Nov 2015 UTC
F4
4
17

Monthly Averages
Month
Hail
Wind
Torn
Total
Jan
0
2
0
2
Feb
0
1
0
1
Mar
5
6
1
12
Apr
15
14
1
30
May
35
38
4
77
Jun
31
62
4
97
Jul
23
85
4
113
Aug
14
41
2
57
Sep
6
21
1
28
Oct
2
4
0
7
Nov
1
5
1
7
Dec
0
1
0
1

Hourly Averages
UTC
Hail
Wind
Torn
Total
00
321
787
54
1162
01
246
586
47
879
02
130
424
22
576
03
117
344
21
482
04
61
262
7
330
05
79
194
10
283
06
60
138
10
208
07
45
143
2
190
08
31
110
0
141
09
26
104
4
134
10
27
117
4
148
11
25
113
3
141
12
25
66
1
92
13
36
57
3
96
14
27
58
3
88
15
49
56
8
113
16
77
107
6
190
17
101
197
9
307
18
161
296
18
475
19
271
416
27
714
20
381
587
62
1030
21
438
780
59
1277
22
464
811
93
1368
23
401
873
64
1338

Click Here for tabular data (F2+ tornadoes).
Page Updated: Saturday 10-27-2007
If you have comments regarding this information, contact John Hart of the Storm Prediction Center.
Go to SPC web page Go to NWS web site Go to NOAA web site