Radar:       Or click here for map
Radar: Columbia SC
33.93 N - 81.12W
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
5485
 160 39
Wind
9617
 373 63
Tornadoes
800
 132 11
Total
15902
 665 73
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
32
1:82
Sig Severe
55
1:1,961
Tornadoes
57
1:1,630
F2+ Torn
43
1:9,881
* 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: 529%
10 year report increase: 132%
5 year report increase: 189%
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:
5.4 on 06 May

Primary Season:
Apr 18 - Aug 25
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
0.031%
3255 yrs
29
F2+ Tornado
0.025%
4000 yrs
29
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
12
6
63
38
22
14
56
47
1981
9
9
50
26
16
9
41
34
1982
55
21
86
37
14
10
83
50
1983
23
12
177
54
19
13
61
61
1984
115
26
214
46
28
7
171
53
1985
194
29
263
47
12
6
218
52
1986
73
24
197
53
6
5
85
58
1987
99
30
168
57
2
2
103
66
1988
146
34
250
60
7
6
160
71
1989
69
30
438
59
31
10
131
70
1990
151
44
320
68
18
12
187
80
1991
87
25
230
51
18
8
123
60
1992
104
26
231
53
22
10
148
61
1993
176
33
195
57
18
10
212
64
1994
121
32
309
67
56
17
233
77
1995
231
51
556
75
60
18
351
88
1996
294
48
420
90
34
16
362
95
1997
268
58
443
75
22
8
312
88
1998
434
66
558
75
67
17
568
92
1999
333
54
397
66
29
14
391
79
2000
283
61
521
78
27
17
337
92
2001
156
42
425
72
19
9
194
77
2002
260
53
623
81
15
6
290
87
2003
460
64
746
87
37
12
534
101
2004
137
42
420
74
123
18
383
87
2005
376
59
448
61
30
12
436
79
2006
819
75
869
84
48
16
915
102
AVG
203
39
356
63
30
11
589
73


Violent Tornadoes
Date
F
Deaths
Injuries
1984 28-Mar 2300 UTC
F4
5
49
1984 28-Mar 2320 UTC
F4
0
36
1984 28-Mar 2345 UTC
F4
0
24
1984 29-Mar 0010 UTC
F4
7
100
1984 29-Mar 0020 UTC
F4
4
395
1989 05-May 2220 UTC
F4
2
35
1989 05-May 2254 UTC
F4
4
52
1989 06-May 0001 UTC
F4
1
6
1992 22-Nov 2145 UTC
F4
5
86
1995 07-Nov 2205 UTC
F4
0
1
1998 07-May 2149 UTC
F4
0
2

Monthly Averages
Month
Hail
Wind
Torn
Total
Jan
3
7
1
11
Feb
3
12
1
16
Mar
15
19
3
37
Apr
35
27
3
65
May
67
56
5
127
Jun
37
75
3
116
Jul
23
84
2
110
Aug
12
45
2
59
Sep
3
11
5
19
Oct
1
3
0
4
Nov
1
13
3
17
Dec
2
4
0
7

Hourly Averages
UTC
Hail
Wind
Torn
Total
00
476
932
76
1484
01
326
645
48
1019
02
227
398
22
647
03
163
245
20
428
04
94
191
19
304
05
57
133
17
207
06
27
139
11
177
07
39
121
13
173
08
24
87
14
125
09
21
59
11
91
10
36
67
17
120
11
41
60
12
113
12
26
78
11
115
13
20
96
13
129
14
27
102
15
144
15
30
114
16
160
16
46
116
13
175
17
114
151
28
293
18
251
353
46
650
19
449
648
57
1154
20
708
1046
65
1819
21
789
1343
89
2221
22
829
1381
101
2311
23
665
1112
66
1843

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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