Radar:       Or click here for map
Radar: Dover AFB DE
38.82 N - 75.43W
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
2045
75 19
Wind
7714
240 42
Tornadoes
615
94 10
Total
10374
409 47
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
63
1:126
Sig Severe
73
1:3,189
Tornadoes
73
1:2,121
F2+ Torn
61
1:13,875
* 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: 470%
10 year report increase: 31%
5 year report increase: 43%

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:
4.0 on 18 Jul

Primary Season:
Apr 24 - Sep 03

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:
15% at 22 UTC

See hourly table below

Climatological Threat Potential
Threat
Avg Prob of Occurrence
Return Interval
Natl Rank
Any Tornado
0.007%
13630 yrs
N/A
F2+ Tornado
0.003%
29363 yrs
N/A
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
39
18
118
42
11
7
61
47
1981
8
5
33
18
9
9
26
23
1982
11
6
97
30
6
5
23
33
1983
22
7
162
31
13
8
48
34
1984
10
5
78
21
14
6
38
25
1985
45
10
85
20
8
6
61
23
1986
24
10
95
27
2
2
28
32
1987
45
17
118
27
10
7
65
35
1988
44
16
183
35
13
10
70
40
1989
21
11
314
37
26
13
73
42
1990
57
15
326
43
29
10
115
46
1991
51
18
291
44
9
6
69
45
1992
35
20
385
45
39
10
113
48
1993
87
22
225
46
38
14
163
54
1994
86
25
396
58
50
18
186
61
1995
58
19
376
59
42
18
142
63
1996
97
27
386
51
44
17
185
57
1997
72
17
227
36
11
8
94
40
1998
136
25
350
40
29
14
194
49
1999
98
20
361
46
14
12
126
50
2000
251
34
360
53
15
12
281
62
2001
81
26
381
47
22
10
125
53
2002
177
28
578
52
17
9
211
56
2003
90
33
558
56
36
17
162
67
2004
133
34
433
61
79
18
291
69
2005
75
21
314
52
15
5
105
56
2006
192
36
484
53
14
10
220
63
AVG
76
19
286
42
23
10
384
47


Violent Tornadoes
Date
F
Deaths
Injuries
2001 24-Sep 1903 UTC
F4
0
2
2002 28-Apr 2256 UTC
F4
3
122

Monthly Averages
Month
Hail
Wind
Torn
Total
Jan
0
5
0
6
Feb
0
2
0
3
Mar
2
6
0
9
Apr
11
14
1
27
May
20
41
3
64
Jun
17
61
3
80
Jul
14
77
5
96
Aug
7
46
3
57
Sep
2
14
3
19
Oct
0
6
1
7
Nov
1
12
1
14
Dec
0
1
0
1

Hourly Averages
UTC
Hail
Wind
Torn
Total
00
187
852
78
1117
01
113
554
25
692
02
68
397
24
489
03
34
232
14
280
04
21
120
5
146
05
16
111
12
139
06
6
68
3
77
07
2
46
5
53
08
4
29
6
39
09
4
24
4
32
10
3
20
6
29
11
0
39
5
44
12
3
40
9
52
13
5
35
4
44
14
7
62
4
73
15
15
71
6
92
16
14
102
12
128
17
31
140
15
186
18
69
222
25
316
19
187
473
47
707
20
276
790
72
1138
21
340
1074
71
1485
22
315
1155
88
1558
23
325
1058
75
1458

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.
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