Radar:       Or click here for map
Radar: Roanoke VA
37.02 N - 80.27W
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
4812
 151 35
Wind
7476
 260 49
Tornadoes
343
 67 7
Total
12631
 478 61
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
54
1:103
Sig Severe
65
1:2,729
Tornadoes
N/A
1:3,802
F2+ Torn
N/A
1:19,466
* 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: 668%
10 year report increase: 113%
5 year report increase: 208%
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:
4.8 on 06 Jun

Primary Season:
Apr 03 - Aug 28
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:
14% at 22 UTC
See hourly table below

Climatological Threat Potential
Threat
Avg Prob of Occurrence
Return Interval
Natl Rank
Any Tornado
0.010%
9806 yrs
74
F2+ Tornado
0.007%
14921 yrs
73
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
31
12
68
27
8
5
47
34
1981
17
11
35
19
7
2
31
24
1982
26
15
56
23
7
6
40
31
1983
35
17
138
36
13
9
61
41
1984
58
18
100
33
7
7
72
43
1985
143
28
173
31
4
4
151
40
1986
53
23
140
42
5
4
63
51
1987
63
26
122
50
2
2
67
60
1988
110
31
131
40
10
8
130
54
1989
75
23
299
43
21
9
117
49
1990
120
33
172
52
15
13
150
65
1991
28
15
147
41
7
4
42
48
1992
110
35
150
40
12
4
134
53
1993
158
32
306
57
4
4
166
67
1994
128
43
162
56
15
9
158
67
1995
218
45
371
59
10
6
238
79
1996
258
41
432
79
22
14
302
89
1997
141
37
262
45
2
1
145
57
1998
522
56
346
51
37
11
596
70
1999
191
47
355
55
10
6
211
62
2000
283
52
548
62
12
7
307
74
2001
164
41
323
47
6
5
176
59
2002
396
40
444
60
4
2
404
68
2003
398
59
600
75
21
10
440
91
2004
202
46
398
71
43
12
288
89
2005
197
45
381
60
23
7
243
73
2006
687
74
817
77
16
8
719
98
AVG
178
35
277
49
13
7
468
61


Violent Tornadoes
Date
F
Deaths
Injuries
1988 28-Nov 0600 UTC
F4
4
154
1989 05-May 2254 UTC
F4
4
52
1989 06-May 0001 UTC
F4
1
6
1998 07-May 2149 UTC
F4
0
2

Monthly Averages
Month
Hail
Wind
Torn
Total
Jan
1
5
0
6
Feb
1
4
0
5
Mar
8
8
1
17
Apr
27
21
1
48
May
58
49
3
110
Jun
39
60
2
100
Jul
25
71
2
98
Aug
12
38
1
52
Sep
5
8
2
14
Oct
1
2
0
3
Nov
1
9
1
11
Dec
0
1
0
1

Hourly Averages
UTC
Hail
Wind
Torn
Total
00
472
829
36
1337
01
291
573
27
891
02
174
367
8
549
03
98
219
6
323
04
54
145
7
206
05
43
122
8
173
06
34
115
5
154
07
27
78
6
111
08
15
63
4
82
09
17
56
5
78
10
20
33
4
57
11
23
44
2
69
12
23
56
3
82
13
20
57
2
79
14
31
63
2
96
15
16
66
4
86
16
53
68
6
127
17
116
136
12
264
18
209
241
15
465
19
417
505
12
934
20
616
726
38
1380
21
752
939
38
1729
22
711
1037
50
1798
23
580
938
43
1561

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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