AL
$5,000 TO $50,000
F1
MODERATE DAMAGE (73-112 MPH)
1 - 3.1 MILES
18 - 55 YDS
CST
15 MIN
TORNADO
NOT CONFIRMED
$50,000 TO $500,000
F2
SIGNIFICANT DAMAGE (113-157 MPH)
10 - 31.9 MILES
F3
SEVERE DAMAGE (158-206 MPH)
176 - 527 YDS
600
< 18 YDS
3.2 - 9.9 MILES
56 - 175 YDS
500
30
$500 TO $5,000
30 MIN
WITH LARGE HAIL
< 1 MILE
WATERSPOUT MOVING ASHORE
100
50
450
300
EST
WITH HEAVY RAIN
750
WITH LARGE HAIL AND HEAVY RAIN
2 HRS
F4
DEVASTATING DAMAGE (207-260 MPH)
528 - 1759 YDS
2000
1320
$500,000 TO $5,000,000
2640
32 - 99.9 MILES
1000
$50 TO $500
1800
1200
> 2 HRS
800
150
1 HR 15 MI
F0
LIGHT DAMAGE (40-72 MPH)
900
NO DAMAGE REPORTED
1 HR
250
TORNADO MOVING OVER A LARGE BO
WITH NO RAIN OR HAIL
20
1500
110
< $50
AR
1250
2500
> 1760 YDS
5280
120
80
90
45 MIN
$5,000,000 TO $50,000,000
10
60
200
CONE SHAPED
400
ROPELIKE
AZ
FROM NEWSPAPER CLIPPINGS
CA
FROM STORM DATA
CO
1 HR 30 MI
NO VISIBLE SIGN
550
60 DEGREES TO THE RIGHT
CT
360
DE
FL
230
210
180
520
3000
70
380
SINUSOIDAL
350
1350
GA
540
130
2400
9
45 DEGREES TO THE LEFT
40
700
IA
1050
2250
F5
INCREDIBLE DAMAGE (261-318 MPH)
430
ID
0
THIN COLUMN
IL
> 100 MILES
390
4800
170
240
220
THICK COLUMN
COUNTER-CLOCKWISE
3600
480
IN
1650
3900
4200
30 DEGREES TO THE RIGHT
530
1580
FROM NWS SURVEY
KS
EDT
1980
3960
260
$50,000,000 TO $500,000,000
140
960
660
45 DEGREES TO THE RIGHT
2100
1080
2700
KY
OTHER
LA
850
GMT
MA
840
MD
ME
MI
6000
CLOCKWISE
MN
MODERATE COLUMN
670
OBSCURED BY HEAVY RAIN
190
4500
60 DEGREES TO THE LEFT
8800
30 DEGREES TO THE LEFT
580
160
370
MO
270
CONFIRMED
MS
690
330
420
MT
LEFT TURN LOOP
NC
RIGHT TURN LOOP
ND
NON-TORNADIC WINDS > 50 KTS
NE
1 HR 45 MI
FUNNEL CLOUD
NH
NJ
NM
1300
2600
NV
NY
OH
830
1100
OK
2200
650
OR
PA
SC
280
SD
2450
3500
MDT
730
1940
440
630
490
760
8000
TN
560
980
TX
1550
4000
UT
VA
VT
WA
WI
WV
WY