south carolina state climate office mark malsick severe weather liaison ( [email protected]) south...
TRANSCRIPT
South Carolina State Climate Office
Mark MalsickSevere Weather Liaison
South Carolina’s Tornado Climatology 1950-2009
South Carolina’s Tornado Climatology: 1950-2009
• GOAL: CONSOLIDATED SC TORNADO LIST
• NOAA-NWS STORM PREDICTION CENTER US SEVERE WEATHER DATABASE. (WCM Page)
• 871 SOUTH CAROLINA TORNADOES
• CROSS-CHECKED WITH NCDC DATABASE.
• SIMPLIFIED MULTI-COUNTY TORNADOES
• CONVERTED TIME FROM CST TO EST
TX KS AL IA MO IL FL NE MS OK CO AR MN LA GA ND SD NC SC TN WI KY VA IN OH0.0
20.0
40.0
60.0
80.0
100.0
120.0
140.0
160.0
145.2
110.8
62.6 60.4 58.8 57.8 57.5 55.3 55.1
47.644.6 44.5 43.2 42.7
38.534.5 32.4 31.2 29.4 28.9
25.5 24.2 23.7 22.5
15.9
2000-2009 US Annual Tornado Average: Top 25
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
0
10
20
30
40
50
60
70
80
90
SOUTH CAROLINA TORNADOES 1950-2009AVERAGES:
1950-2009: 14.5/year
1950-1993: 8.7/year
1994-2009: 30.5/year
2000-2009: 29.4/year
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
0
2
4
6
8
10
12
14
16
18
1
0 0
1
0
3
1
3
1
0
2
1
2
3
4
3
2
6
2
3
0 0 0
16
1
4
2
0
2
3
4
1 1 1
10
2
0
1 1
8
1
4
2
1
13
7
2
3
9
1 1 1 1
0
7
1 1 1
8
3
EF2, 3, 4 TORNADOES
AVERAGES:
1950-2009: 2.7/year
1950-1993: 2.3/year
1994-2009: 3.7/year
2000-2009: 2.4/year
0
5
10
15
20
25
30
35
40
45
50
47
38 38
3433
31 3130
29 29
26
1413 13
12
109 9
8 8 8
20
12 12
17
19
24
14
17
19
1211
67
8 87
2
5
7
4 4
1950-2009
1994-2009
TORNADOES BY COUNTY – 10 Most, 10 Least
(E)F4 (E)F3 (E)F2 (E)F1 (E)F00
50
100
150
200
250
300
350
400
1028
124
355 354
114
44
164
265
SC TORNADOES BY INTENSITY
1950-2009
1994-2009
JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC0
20
40
60
80
100
120
140
26
43
116119
130
81
57
75
120
18
64
2221
11
62 62 61
46
32
41
95
8
43
6
Monthly Tornado Distribution
1950-20091994-2009
0 100 200 300 400 500 600 700 800 900 100011001200130014001500160017001800190020002100220023000
20
40
60
80
100
120
18
9
16
11 10
1614
1822
10
2325
33
58 58
85
105
98
87
62
30
1923
1211
4 5 6 9
13
7
12 13
7
13 14
20
34 31
48
5761
4037
129
117
TORNADO OCCURENCE TIME
1950-2009
1994-2009
010
020
030
040
050
060
070
080
090
010
0011
0012
0013
0014
0015
0016
0017
0018
0019
0020
0021
0022
0023
000
20
40
60
80
100
120
INTENSITY - TIME (1950-2009)
(E)F4
(E)F3
(E)F2
(E)F1
(E)F0
19941995
19961997
19981999
20002001
20022003
20042005
20062007
20082009
0
10
20
30
40
50
60
70
80
90
100
40
54
24
17
42
1720
1412
18
86
14
36
18
57
1923
0 1
7 6
04
10
14
76
25
0
8
0
Tornado Total
Tropical Related
2004 - Charley, Francis (47), Gaston, Ivan, Jeanne (17)1994 – Beryl (23)
“TROPICAL” TORNADOES*
*Tornadoes triggered by decaying tropical storms over land.
South Carolina’s Tornado Climatology: 1950-2009
SOUTH CAROLINA TORNADO CLIMATE BASICS:
• Annual climate feature, Spring preferred, any month fair game.
• Afternoons preferred, any hour fair game.
• EF0 and EF1 tornadoes: 81% (65-110 mph, EF4: 166-200 mph) .
• Short, narrow tracks, short lived (AVG: 3.5 miles, 110 yds.). But…
• Longest: 62 miles, (400yds wide, F3, McCrmck-Edgfld-Slda, 11 NOV 1992)
• Widest: 2600yds, (5 miles, F4, Marlboro, 28 MAR 1984)
• “Tropical” tornadoes a significant inland threat.
• Midlands and Piedmont preferred, any County fair game.