Radar:       Or click here for map
Radar: St Louis MO
38.68 N - 90.67W
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
6679
314 38
Wind
8155
384 46
Tornadoes
1107
186 13
Total
15941
884 59
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
31
1:82
Sig Severe
34
1:1,475
Tornadoes
24
1:1,178
F2+ Torn
26
1:7,012
* 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: 706%
10 year report increase: 191%
5 year report increase: 133%

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:
5.1 on 28 May

Primary Season:
Mar 29 - Jul 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 23 UTC

See hourly table below

Climatological Threat Potential
Threat
Avg Prob of Occurrence
Return Interval
Natl Rank
Any Tornado
0.031%
3208 yrs
28
F2+ Tornado
0.024%
4170 yrs
30
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
55
27
166
44
13
5
81
50
1981
57
23
170
38
26
15
109
52
1982
144
36
300
53
62
21
268
64
1983
77
27
121
33
22
5
121
47
1984
150
31
179
33
45
16
240
50
1985
102
22
81
31
10
8
122
41
1986
89
26
130
31
17
9
123
42
1987
57
15
134
37
10
5
77
42
1988
54
14
156
18
16
7
86
22
1989
87
17
68
17
15
9
117
28
1990
74
23
132
41
47
18
168
50
1991
110
34
172
44
17
13
144
61
1992
157
32
254
39
23
11
203
54
1993
151
39
346
57
36
17
223
71
1994
126
27
249
39
25
6
176
45
1995
200
46
354
53
48
15
296
67
1996
312
48
294
55
48
16
408
72
1997
157
43
189
42
21
7
199
62
1998
349
51
512
46
83
24
515
65
1999
238
35
372
42
63
13
364
50
2000
372
55
570
67
43
20
458
80
2001
356
63
432
69
28
13
412
84
2002
405
52
395
51
45
12
495
69
2003
742
63
484
63
99
18
940
77
2004
485
50
551
55
74
22
633
69
2005
518
51
644
66
24
11
566
76
2006
1055
70
700
73
147
25
1349
94
AVG
247
38
302
46
41
13
590
59


Violent Tornadoes
Date
F
Deaths
Injuries
1981 04-Apr 0450 UTC
F4
0
32
1982 29-May 2005 UTC
F4
10
181
1990 02-Jun 2245 UTC
F4
0
2
1990 02-Jun 2307 UTC
F4
0
6
1990 02-Jun 2320 UTC
F4
1
12
1995 13-May 2255 UTC
F4
0
45
2002 24-Apr 2113 UTC
F4
0
16
2003 07-May 0232 UTC
F4
2
33
2006 13-Mar 0343 UTC
F4
0
0
2006 22-Sep 2113 UTC
F4
0
6

Monthly Averages
Month
Hail
Wind
Torn
Total
Jan
2
3
1
7
Feb
5
4
0
10
Mar
22
12
3
37
Apr
67
33
10
110
May
69
49
11
129
Jun
29
63
6
97
Jul
17
61
3
81
Aug
12
38
1
51
Sep
10
17
1
28
Oct
4
4
1
9
Nov
6
11
2
19
Dec
2
2
1
5

Hourly Averages
UTC
Hail
Wind
Torn
Total
00
652
928
151
1731
01
544
761
117
1422
02
457
581
86
1124
03
305
481
58
844
04
274
339
41
654
05
147
272
34
453
06
120
192
13
325
07
79
161
11
251
08
70
168
6
244
09
70
144
7
221
10
56
144
6
206
11
49
115
9
173
12
56
131
6
193
13
72
81
8
161
14
107
91
7
205
15
69
103
8
180
16
77
102
8
187
17
133
130
20
283
18
207
184
31
422
19
288
304
44
636
20
533
453
61
1047
21
652
629
84
1365
22
843
806
126
1775
23
819
855
165
1839

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