Radar:       Or click here for map
Radar: Portland ME
43.88 N - 70.25W
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
812
 20 9
Wind
2378
 77 17
Tornadoes
69
 10 2
Total
3259
 107 21
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
N/A
1:400
Sig Severe
N/A
1:12,189
Tornadoes
N/A
1:18,902
F2+ Torn
N/A
1:130,424
* 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: 254%
10 year report increase: 575%
5 year report increase: 219%
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:
1.9 on 19 Jul

Primary Season:
May 20 - Aug 30
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:
16% at 20 UTC
See hourly table below

Climatological Threat Potential
Threat
Avg Prob of Occurrence
Return Interval
Natl Rank
Any Tornado
0.001%
N/A
N/A
F2+ Tornado
0.000%
N/A
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
10
3
15
11
1
1
12
14
1981
7
4
20
12
3
2
13
13
1982
3
3
16
4
1
1
5
6
1983
23
8
75
19
1
1
25
23
1984
6
4
16
7
5
3
16
11
1985
22
4
15
9
1
1
24
12
1986
42
8
97
14
6
3
54
16
1987
30
9
63
13
0
0
30
18
1988
22
8
105
22
4
2
30
25
1989
6
6
80
20
9
3
24
20
1990
27
9
59
16
3
2
33
19
1991
9
7
68
12
3
3
15
16
1992
18
8
38
13
0
0
18
17
1993
17
10
100
18
3
2
23
21
1994
32
11
113
28
1
1
34
33
1995
4
2
88
21
1
1
6
22
1996
29
13
46
11
1
1
31
18
1997
36
12
62
19
5
4
46
26
1998
37
18
138
21
2
2
41
27
1999
40
10
167
23
3
2
46
25
2000
64
13
69
15
2
2
68
22
2001
59
13
99
16
3
2
65
21
2002
56
17
175
23
2
2
60
29
2003
16
7
61
16
0
0
16
17
2004
30
10
97
21
3
3
36
26
2005
16
9
138
20
2
1
20
24
2006
151
25
358
34
4
3
159
37
AVG
30
9
88
17
3
2
121
21


Violent Tornadoes
Date
F
Deaths
Injuries

Monthly Averages
Month
Hail
Wind
Torn
Total
Jan
0
0
0
0
Feb
0
0
0
0
Mar
0
0
0
0
Apr
0
1
0
1
May
3
8
0
11
Jun
10
22
0
33
Jul
12
33
1
46
Aug
3
19
1
23
Sep
1
3
0
4
Oct
0
0
0
0
Nov
0
0
0
0
Dec
0
1
0
1

Hourly Averages
UTC
Hail
Wind
Torn
Total
00
47
179
4
230
01
25
112
1
138
02
15
85
3
103
03
10
64
0
74
04
3
19
1
23
05
1
14
0
15
06
0
12
0
12
07
2
4
1
7
08
3
23
0
26
09
0
32
0
32
10
4
7
0
11
11
1
9
1
11
12
3
19
0
22
13
2
10
1
13
14
6
9
1
16
15
5
7
0
12
16
28
14
1
43
17
31
54
1
86
18
85
147
7
239
19
124
249
10
383
20
150
356
10
516
21
98
331
11
440
22
101
354
10
465
23
68
268
6
342

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