Radar:       Or click here for map
Radar: Altus AFB (Frederick) OK
34.35 N - 98.97W
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
14558
1156 60
Wind
6929
649 49
Tornadoes
1456
198 18
Total
22943
2003 74
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
6
1:57
Sig Severe
5
1:651
Tornadoes
6
1:896
F2+ Torn
19
1:6,587
* 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: -12%
10 year report increase: -28%
5 year report increase: -36%

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:
9.8 on 29 May

Primary Season:
Mar 23 - Jul 05

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 00 UTC

See hourly table below

Climatological Threat Potential
Threat
Avg Prob of Occurrence
Return Interval
Natl Rank
Any Tornado
0.034%
2955 yrs
24
F2+ Tornado
0.028%
3599 yrs
25
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
131
32
70
31
45
19
221
51
1981
103
31
51
25
64
29
231
52
1982
136
44
124
39
105
22
346
58
1983
231
47
182
42
84
26
399
63
1984
272
47
148
49
36
17
344
66
1985
385
59
133
47
34
16
453
71
1986
705
61
180
48
72
20
849
78
1987
316
66
187
49
27
16
370
85
1988
282
44
135
38
12
9
306
61
1989
612
65
243
46
41
15
694
73
1990
495
63
171
48
65
18
625
79
1991
578
63
213
52
37
15
652
80
1992
724
91
265
55
36
18
796
94
1993
635
66
292
48
49
20
733
76
1994
725
68
387
62
44
15
813
85
1995
736
69
302
50
121
25
978
78
1996
769
75
346
63
54
24
877
92
1997
446
56
338
59
74
19
594
74
1998
490
58
313
62
40
16
570
78
1999
809
74
325
61
96
21
1001
89
2000
674
61
293
39
42
17
758
74
2001
726
72
520
53
58
17
842
81
2002
539
57
402
49
26
12
591
68
2003
993
62
347
53
76
16
1145
75
2004
851
75
346
48
62
20
975
84
2005
651
58
340
46
35
15
721
67
2006
544
52
276
63
21
11
586
78
AVG
539
60
257
49
54
18
850
74


Violent Tornadoes
Date
F
Deaths
Injuries
1980 02-Apr 1810 UTC
F4
0
0
1981 23-May 0049 UTC
F4
0
0
1990 25-Apr 2144 UTC
F4
0
0
1995 08-Jun 2131 UTC
F4
0
7
1995 08-Jun 2335 UTC
F4
0
0
1995 09-Jun 0045 UTC
F4
0
0
1999 03-May 2326 UTC
F5
36
583
1999 04-May 0210 UTC
F4
1
11
1999 04-May 0225 UTC
F4
2
26
2003 08-May 2210 UTC
F4
0
134

Monthly Averages
Month
Hail
Wind
Torn
Total
Jan
4
0
0
4
Feb
8
6
0
14
Mar
54
13
4
71
Apr
113
23
9
146
May
164
57
24
245
Jun
106
69
10
185
Jul
21
28
1
49
Aug
14
29
1
44
Sep
20
17
1
39
Oct
15
4
2
21
Nov
9
5
1
15
Dec
4
2
0
7

Hourly Averages
UTC
Hail
Wind
Torn
Total
00
1894
667
234
2795
01
1763
738
228
2729
02
1420
739
170
2329
03
1112
667
103
1882
04
893
532
56
1481
05
596
434
36
1066
06
414
328
19
761
07
278
290
4
572
08
193
253
5
451
09
165
155
3
323
10
112
139
8
259
11
113
96
2
211
12
88
58
4
150
13
92
31
3
126
14
110
41
3
154
15
115
49
8
172
16
152
72
11
235
17
186
61
12
259
18
244
51
25
320
19
324
101
32
457
20
514
197
65
776
21
804
295
98
1197
22
1312
388
130
1830
23
1664
547
197
2408

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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