Historical Tornado Cases for North America
1970-1984

                                                                    1936-1949
                                                                    1950-1959
                                                                    1960-1969
                                                                    1985-2004

* Recently added cases
 New!   May 11  1970 Lubbock  tornado  revisited
Event Details SFC LI      
SBCAPE      
850mb 700mb 500mb (400) jet level  Skew T  Affected States Pictures Surface obs
04-17-70    18Z    21Z 0Z     03Z -7 to-9 12Z 17
0Z 18
12Z18
TX NM LBB
04-26-70    21Z -12 12Z     00Z TX OK
05-11-70     * 22Z     22Z   00Z
02Z
-7
3000
12Z       00Z
12Z
TX KS
06-11-70 19Z -6 to-8 00Z 12 OK AR
06-12-70 21Z -9 
3000
12Z     00Z MO
06-13-70 21Z -10 12Z    0Z 14 KS
06-14-70 20Z -11 12Z    0Z 15 KS
02-21-71 21Z -7 00Z 22 MS LA TN AR
04-18-71 00Z -7 to -8 00Z     12Z NM TX  WY
04-27-71 20Z -8.5 to -10
3700-4500
12Z      00Z IL KY IN
05-07-71 23Z -8 to -10 00Z 08 TN
05-09-71 21Z -8 to -10 12Z     00Z KS MS AR Ed1   Ed2
05-17-71 18Z     0Z  -8 to -9 00Z KS
07-12-71 21Z -11 to -12 12Z     00Z IA
10-17-71 23Z 12Z       00Z
 
12Z
TX CO KS
04-30-72 21Z -10 to -12 12Z 
00Z 01
KS
03-13-73 20Z -6 to-7
OK
12Z     00Z OK KS 
04-15-73 07Z TX 
05-06-73   21Z -7 TX 12Z    00Z CO TX OK
05-24-73 00Z OK
05-26-73 21Z -11 to -13
-12 KS
00Z 27 OK AR KS
06-18-73 21Z 12Z      00Z OK
09-25-73 21Z -10 00Z 26 KS NE
11-19-73 00Z 20 -9

12Z      0Z  12Z 20 KS OK
03-09-74 19Z 12Z       00 TX 
04-03-74 20Z -10to-12AL
-9to-10 IN
12Z     00Z MIDWEST/SOUTH
06-07-74   23Z 0Z TX
06-08-74 19Z -9 to-10OK
-8 KS
0Z      12Z   0Z OK KS
01-10-75 14Z -4 to -5 12Z     00Z MS AL
02-22-75 04Z elevated 00Z    12Z OK
03-26-75 21Z    00Z  03Z
05Z
-8 to -10 00Z    12Z TX
06-13-75      * 23Z 12Z     00Z OK
05-06-75 18Z -8 to -9 12Z     00Z NE SD IA
06-18-75 00Z -10 to -11 12Z     00Z LBF00zmod. NE
12-05-75 20Z -7 to -9 12Z3  12Z4    0Z5  12Z5   00Z6 OK
03-12-76 19Z -2.5 to -4.5 12Z      00Z IL IN MI
03-20-76 18Z -6  to -7.5
1600-2200
12Z       00Z IN IL MI MS AL LA
04-17-76 00Z     07Z -6 to -7 12Z      00Z 12Z KS OK TX
04-19-76     * 21Z 12Z      00Z TX
05-25-76     * 20Z 12Z     00Z TX
06-13-76 19Z -13 to -15 12Z approx. IA
07-11-76 20Z 00Z 12 PA
02-23-77 20Z -7 12Z    00Z MS AL OK AR
04-02-77 19Z -5 to -6 00Z 03 MI WI KY
04-04-77 20Z -4 to -5 00Z 05 MS AL GA NC
04-11-77 20Z -5 to -7 00Z 12 DEN00zmod. CO
05-15-77    21Z   0Z -7 to -8 00Z15   12Z
00Z16
OK
05-18-77 18Z -11 to -12 12Z    00Z CO OK  KS
06-05-77 00Z -7 00Z WI 
04-08-79    22Z -9 to -10 12Z     00Z AR
04-10-79 16Z    19Z 21Z    23Z
23Zmax
-8 to -9 00Z OK TX
06-24-79 20Z -8 to -9 12Z CO
06-28-79 21Z -8 to -9 12Z     00Z IA MN
08-28-79 21Z -8 to -9 12Z     00Z KS
07-16-79 20Z -6 00Z 17 WY
08-07-79 21Z -7 00Z 08 ONTARIO Woodstock
02-07-80 22Z -7 to -8 00Z 08 TX 
04-07-80 00Z -5 to -7
1000-1300
MO
1500-2000
AR
00Z      12Z OK MO MS
IL AR TX
05-28-80   21Z -8 to -9 00Z 29 TX
06-03-80   23Z -11 12Z      00Z NE
07-09-80   22Z -8 00Z IN
04-03-81 00Z -6
1500
00Z     12Z IL WI STL
04-22-81 -7 to -8
2400
12Z      00Z MO
05-17-81   23Z -8 to -9 12Z    00Z OK
05-22-81   22Z -11 00Z OK
03-18-82 00Z -6 12Z 18
0Z 19   06Z
12Z 19
approx. TX KS
04-02-82 18Z    20Z 22Z -8 to -9 12Z    00Z OK TX AR MO TN
05-09-82   22Z -7 to -9 12Z       00Z TX 
05-11-82   22Z -8 to -10 00Z TX OK
05-19-82 21Z -9 to -10 12Z  00Z KS CO TX
06-05-82 00Z 6 ? 00Z  WY SD TX
12-02-82   21Z -5
2200
12Z      00Z AR MO IL CGI&STL
04-01-83   21Z -4 to -5 12Z      00Z LA
05-01-83 20Z -5 to -6
1800-2200
12Z     00Z MO IL MI
03-28-84 23Z -8 to -11
2000-3200
00Z 28
12Z 28
00Z 29
approx. SC NC
04-25-84 20Z -6 to -7CO 12Z CO NE
04-26-84
04-26-84(2)
23Z -7 to-10OK
-6 to -9MN
12     0Z  12Z MN IA OK KS
04-27-84 20Z -6 WI IL 12      0Z   0Z WI IL
04-29-84 20Z -8 to -10 OK
-8
2100 MO
12      0Z OK KS MO
05-01-84   22Z -6 to -8 0Z TX
06-08-84 05Z -2 to -3 12Z 08 WI 
06-13-84 22Z -8 00Z 14 WY
11-09-84 22Z -8
1600-2000
0Z MO IL AR