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
FROM STORM DATA
2250
180
90
120
FROM NEWSPAPER CLIPPINGS
230
2400
2700
$5,000,000 TO $50,000,000
> 100 MILES
60
80
200
210
360
F5
INCREDIBLE DAMAGE (261-318 MPH)
1050
2100
10
OBSCURED BY HEAVY RAIN
FROM NWS SURVEY
240
1650
660
1260
220
45 MIN
ROPELIKE
THIN COLUMN
70
MODERATE COLUMN
NO VISIBLE SIGN
COUNTER-CLOCKWISE
420
40
270
1420
380
0
CLOCKWISE
830
390
CONFIRMED
130
$50,000,000 TO $500,000,000
STRAIGHT
AR
1250
2500
> 1760 YDS
5280
CONE SHAPED
400
OTHER
SINUSOIDAL
THICK COLUMN
LEFT TURN LOOP
45 DEGREES TO THE RIGHT
3960
5120
1980
700
480
880
1300
CDT
AZ
45 DEGREES TO THE LEFT
3000
4500
MST
CA
PST
160
3900
PDT
CO
1 HR 30 MI
550
60 DEGREES TO THE RIGHT
30 DEGREES TO THE LEFT
330
1 HR 45 MI
190
CT
350
4200
DE
EDT
1290
FL
520
1350
GA
540
9
30 DEGREES TO THE RIGHT
IA
430
6600
RIGHT TURN LOOP
260
670
530
1600
4600
ID
IL
4800
170
3600
1760
7890
2550
1700
690
370
310
IN
1580
510
KS
140
960
1080
1400
60 DEGREES TO THE LEFT
990
840
630
KY
UNKNOWN
LA
850
GMT
490
MA
MD
ME
MI
6000
3300
280
1840
440
720
MN
8800
580
2140
2600
MO
5100
1020
MS
4750
3690
MT
MDT
NC
2540
4220
3670
ND
NON-TORNADIC WINDS > 50 KTS
NE
FUNNEL CLOUD
7920
NH
NJ
NM
NV
NY
940
320
OH
1100
OK
2200
650
810
1590
4000
OR
PA
1280
730
2730
RI
SC
290
1550
2610
7800
1060
SD
2450
3500
1940
760
8000
410
870
TN
560
980
7500
TX
640
1120
8
5200
7000
5000
3150
1340
3700
UT
VA
VT
WA
WI
WV
WY
7650