1936-1949
                                                                       1950-1959
                                                                       1970-1984
                                                                       1985-2004

*Recently added cases
*Work in progress
 

Event Details	SFC	LI CAPE	850mb	700mb	500mb(400)	250mb	Skew T	Affected States	Surface Obs	Pictures
02-09-60	22Z	-6 1500			00Z 10			MO IL AR	Farmington
04-12-60	23Z	-8			00Z 13			TX
04-23-60	18Z    21Z 01Z	-7			00Z 23    12Z 23 00Z 24			WY	CYS
05-04-60	20Z	-7 to -8			12Z    00Z			OK TX
05-05-60	20Z	-7 to -9			12Z    00Z			OK AR
06-20-60	21Z	-8 to -9		00Z 21	00Z 21	00Z 21		NE CO
06-27-60	21Z	-9			00Z 28			NE CO
11-27-60	00Z	-5 to -6			12Z    00Z			KS
02-17-61	22Z	-6 to -8			12Z     00Z			OK
05-04-61	20Z	-10 to-11			12Z     00Z			OK TX
05-05-61	21Z	-9			12Z     00Z			OK AR
05-30-61	21Z				12Z      00Z			NE
06-03-61	21Z	-10 to -11			00Z			TX  NM
05-14-62	23Z	-6 to -7			00Z 15			NE SD	GLD
05-17-62	21Z	-7 to -8			12Z    00Z			NM OK KS CO
05-21-62	23Z	-11			12Z    00Z			NE SD
05-25-62    *	21Z				12Z      00Z			OK TX
05-26-62    *	23Z				12Z     00Z			OK TX
05-27-62    *	21Z				12Z      00Z			OK TX KS
06-16-62	00Z	-7			12Z 16        00Z 17			KS
08-06-62	22Z	-12 to -14 8600			00Z 7		00Z	KS
04-17-63    *	21Z							IL IN
04-22-63    *	22Z				00Z			IL IN TX
05-26-63    *	21Z				12Z      00Z			OK
11-21-63	23Z	-6			12Z     00Z    12Z			KS
03-04-64	16Z	-6 to -8			12Z     00Z			AR MO TN KY
04-03-64	20Z	-11 to-13			12Z 3       00Z 4			TX
04-12-64	21Z	-10			00Z 13			KS MO IA OK
04-19-64	22Z	-10 to-11			12Z    00Z			KS
04-26-64	18Z	-5 to -7			12Z    00Z			NE IA
05-05-64	21Z	-11			12Z 05 00Z 06			MN  to OK
06-11-64	22Z	-9 to -11			00Z 12			NM TX
08-31-64	23Z	-9 to -10			00Z 01			KS
11-14-64	22Z	-6 to -7			12Z 14 00Z 15			KS OK
03-16-65	21Z	-5 to -7			00Z 17			KS OK TX
04-11-65	22Z	-7 to -9			00Z 12			IA WI IN OH MI
05-05-65	21Z				00Z 6			MN IA WI ND
05-06-65	00Z				00Z 7			MN TX OK
05-07-65	07Z  8				00Z   12Z			CO WY  KS
05-08-65	21Z	-11 to -13			00Z 9			NE SD CO
05-25-65	21Z	-7 to -8			12Z    00Z			OK TX NE KS	DDC	PrattTOR
06-02-65	02Z				12Z        00Z 12Z			TX	LBB
06-16-65	20Z	-6 to -8			0Z     12Z  0Z			CO	COS
06-17-65	18Z	-10 to-12			12Z     00Z			CO
06-25-65	23Z	?			00Z 26			NM TX
08-26-65	23Z	-12 to -14			12Z    00Z			IA
11-12-65	19Z	-3			12Z    00Z			IL IN
03-03-66	21Z	-7			00Z 4			MS AL
05-10-66	22Z	-5 to -7			12Z    00Z			TX NE
06-11-66	22Z	-7 to -8			00Z 12			MN
07-10-66	22Z	-10 to -12			00Z 11			MN WI
10-14-66	20Z	-12 IA -4 STL 1100			12Z   00Z			MN IA IL MO	STL
01-24-67	20Z	-5 1400			12Z   00Z			IA MO WI IL	STL
01-25-67	00Z	-4 to -6			00Z    12Z  00Z26			OK
03-12-67	10Z	-3 to -5			00Z  12Z			KY TN SC
04-12-67	20Z	-6			12Z    0Z 13		RAP00Zmod.	WY OK
04-30-67	18Z     21Z	-10			00Z 01		approx.	IA MN SD
06-09-67	23Z	-11 to -12			12Z    00Z			KS NE IA
06-10-67    *	21Z				12Z    00Z			OK CO KS
06-23-67	22Z	-8 to -11			00Z 24	00Z	00Z	KS
12-21-67	06Z	-3.5 to -5 800-1100			00Z     12Z			IL MO AR	STL
04-02-68	22Z	-7 to -8			12Z   00Z			TX  OK
04-21-68	20Z	-7			12Z 00Z			KS OK
05-06-68    *	19Z				00Z			TX
05-13-68	19Z	-10			12Z    00Z			KS OK NE		Gov1 Gov2
05-15-68	20Z	-9to-10AR -11 IL IA 3100-3400 at 03Z IL			12Z    00Z			MO AR IL IA	MDH&VLA
05-31-68	22Z				12Z      00			TX
06-08-68	21Z				12Z        00Z			TX
06-13-68	23Z	-9			00Z 14		approx.	MN IA
01-23-69	12Z	-6			12Z 23			MS
05-06-69	21Z	-10			12Z      00Z			TX		Earth
06-22-69	22Z	-9 to -10.5 4000			12Z    00Z			MO
06-23-69	21Z	-11 to -13			12Z     00Z			OK KS	GAG-ICT-IAB
06-24-69	00Z 25	-9 to -10			00Z 25			KS NE
08-06-69	22Z	-13			00Z 07		STC00zmod.	MN	BRD
08-09-69	23Z	-9			00Z 10			OH KY