|
KNOTS to MPH or KPH |
|
| Temperature |
| Celsius |
Fahrenheit |
Celsius |
Fahrenheit |
Celsius |
Fahrenheit |
| 40 |
104 |
21 |
69.8
|
2 |
35.6 |
| 39 |
102.2
|
20 |
68 |
1 |
33.8 |
| 37 |
98.6
|
18 |
64.4 |
-1 |
30.2 |
| 36 |
96.8
|
17 |
62 |
-2 |
28.4 |
| 35 |
95
|
16 |
60.8 |
-3 |
26.6 |
| 34 |
93.3
|
15 |
59 |
-4 |
24.8 |
| 33 |
91.4
|
14 |
57.2 |
-5 |
23 |
| 32 |
89.6
|
13 |
55.4 |
-6 |
21.2 |
| 31 |
87.8
|
12 |
53.6 |
-7 |
19.7 |
| 30 |
86
|
11 |
51.8 |
-8 |
17.6 |
| 29 |
84.2
|
10 |
50 |
-9 |
15.8 |
| 28 |
82.4
|
9 |
48.2 |
-10 |
14 |
| 27 |
80.6
|
8 |
46.4 |
-11 |
12.2 |
| 26 |
78.8
|
7 |
44.6 |
-12 |
10.4 |
| 25 |
77
|
6 |
42.8 |
-13 |
8.6 |
| 24 |
75.2
|
5 |
41 |
-14 |
6.8 |
| 23 |
73.4
|
4 |
39.2 |
-15 |
5 |
| 22 |
71.6
|
3 |
37.4 |
-16 |
3.2 |
|
Kts X 1.1507771555 = Mph Mph /
1.150777155 = Kts
Mph X 1.609344 = Kph Kph /
1.609344 = Mph
Kts X 1.85198479488 = Kph
Kph / 1.85198479488 = Kts |
|
Beaufort Wind Scale | |
Force |
Wind Speed |
Description |
Effects Land
/ Sea | |
mph |
km/hr |
knots | |
0 |
0 |
0 |
0 |
Calm |
Still, calm air, smoke will rise vertically. Water
is mirror-like. | |
1 |
1-3
mph |
1-5
kph |
1-3
knots |
Light
Air |
Rising smoke drifts, wind vane is inactive. Small
ripples appear on water surface. |
|
2 |
4-7
mph |
6-11
kph |
4-6
knots |
Light
Breeze |
Leaves rustle, can feel wind on your face, wind
vanes begin to move. Small wavelets develop, crests
are glassy. |
|
3 |
8-12
mph |
12-19
kph |
7-10
knots |
Gentle
Breeze |
Leaves and small twigs move, light weight flags
extend. Large wavelets, crests start to break, some
whitecaps. |
|
4 |
13-18
mph |
20-28
kph |
11-16
knots |
Moderate Breeze |
Small branches move, raises dust, leaves and paper.
Small waves develop, becoming longer, whitecaps. |
|
5 |
19-24
mph |
29-38
kph |
17-21
knots |
Fresh
Breeze |
Small trees sway. White crested wavelets (whitecaps)
form, some spray. | |
6 |
25-31
mph |
39-49
kph |
22-27
knots |
Strong
Breeze |
Large tree branches move, telephone wires
begin to "whistle", umbrellas are difficult to keep
under control. Larger waves form, whitecaps
prevalent, spray. | |
7 |
32-38
mph |
50-61
kph |
28-33
knots |
Moderate or Near Gale |
Large trees sway, becoming difficult to walk. Larger
waves develop, white foam from breaking waves begins
to be blown. | |
8 |
39-46
mph |
62-74
kph |
34-40
knots |
Gale or
Fresh Gale |
Twigs and small branches are broken from trees,
walking is difficult. Moderately large waves with
blown foam. |
|
9 |
47-54
mph |
75-88
kph |
41-47
knots |
Strong
Gale |
Slight damage occurs to buildings, shingles are
blown off of roofs. High waves (6 metres), rolling
seas, dense foam, Blowing spray reduces visibility. | |
10 |
55-63
mph |
89-102
kph |
48-55
knots |
Whole
Gale or Storm |
Trees are broken or uprooted, building damage is
considerable. Large waves (6-9 metres), overhanging
crests, sea becomes white with foam, heavy rolling,
reduced visibility. | |
11 |
64-72
mph |
103-117
kph |
56-63
knots |
Violent
Storm |
Extensive widespread damage. Large waves (9-14
metres), white foam, visibility further reduced. |
|
12 |
73+
mph |
118+
kph |
64+
knots |
Hurricane |
Extreme destruction, devastation. Large waves over
14 metres, air filled with foam, sea white with foam
and driving spray, little visibility. |
Hurricane Scale
|
|
1
|
74-95
|
119-153
|
64-82
|
980+
| |
2
|
96-110
|
154-177
|
83-95
|
979-965
| |
3
|
111-130
|
178-209
|
96-113
|
964-945
| |
4
|
131-155
|
210-249
|
114-135
|
944-920
| |
5
|
156+
|
250+
|
136+
|
below 920
|
|
|
Millibars to Inches
1 millibar = .03 inches | 1019 mb = 30.10 in
1018 mb = 30.07 in
1017 mb = 30.04 in
1016 mb = 30.01 in
1015 mb = 29.98 in
1014 mb = 29.95 in
1013 mb = 29.92 in
1012 mb = 29.89 in
1011 mb = 29.86 in
1010 mb = 29.83 in
1009 mb = 29.80 in
1008 mb = 29.77 in
1007 mb = 29.74 in
1006 mb = 29.71 in
1005 mb = 29.68 in
1004 mb = 29.65 in
1003 mb = 29.62 in
1002 mb = 29.59 in
1001 mb = 29.56 in
1000 mb = 29.53 in
999 mb = 29.50 in
998 mb = 29.47 in
997 mb = 29.44 in
996 mb = 29.41 in
995 mb = 29.38 in
994 mb = 29.35 in
993 mb = 29.32 in
992 mb =
29.29 in
991 mb = 29.26 in
990 mb = 29.23 in
989 mb = 29.20 in
988 mb = 29.17 in
987 mb = 29.14 in
986 mb = 29.11 in
985 mb = 29.08 in
984 mb = 29.05 in
983 mb = 29.02 in
982 mb = 28.99 in
981 mb = 28.96 in
980 mb = 28.93 in
979 mb = 28.90 in
978 mb = 28.87 in
977 mb = 28.84 in
976 mb = 28.81 in
975 mb = 28.78 in
974 mb = 28.75 in
973 mb =
28.72 in
972 mb = 28.69 in
971 mb = 28.66 in
970 mb = 28.63 in
969 mb = 28.60 in
968 mb = 28.57 in
967 mb = 28.54 in
966 mb = 28.51 in
965 mb = 28.48 in
964 mb = 28.45 in
963 mb = 28.42 in
962 mb = 28.39 in
961 mb = 28.36 in
960 mb = 28.33 in
959 mb = 28.30 in
958 mb = 28.27 in
957 mb = 28.24 in
956 mb = 28.21 in
955 mb = 28.18 in
954 mb =
28.15 in | 953 mb = 28.12 in
952 mb = 28.09 in
951 mb = 28.06 in
950 mb = 28.03 in
949 mb = 28.00 in
948 mb = 27.97 in
947 mb = 27.94 in
946 mb = 27.91 in
945 mb = 27.88 in
944 mb
= 27.85 in
943 mb = 27.82 in
942 mb = 27.79 in
941 mb = 27.76 in
940 mb = 27.73 in
939 mb = 27.70 in
938 mb = 27.67 in
937 mb = 27.64 in
936 mb = 27.61 in
935 mb = 27.58 in
934 mb = 27.55 in
933 mb = 27.52 in
932 mb = 27.49 in
931 mb = 27.46 in
930 mb = 27.43 in
929 mb = 27.40 in
928 mb = 27.37 in
927 mb = 27.34 in
926 mb = 27.31 in
925 mb =
27.28 in
924 mb = 27.25 in
923 mb = 27.22 in
922 mb = 27.19 in
921 mb = 27.16 in
920 mb = 27.13 in
919 mb = 27.10 in
918 mb = 27.07 in
917 mb = 27.04 in
916 mb = 27.01 in
915 mb = 26.98 in
914 mb = 26.95 in
913 mb = 26.92 in
912 mb = 26.89 in
911 mb = 26.86 in
910 mb = 26.83 in
909 mb = 26.80 in
908 mb = 26.77 in
907 mb = 26.74 in
906 mb =
26.71 in
905 mb = 26.68 in
904 mb = 26.65 in
903 mb = 26.62 in
902 mb = 26.59 in
901 mb = 26.56 in
900 mb = 26.53 in
899 mb = 26.50 in
898 mb = 26.47 in
897 mb = 26.44 in
896 mb = 26.41 in
895 mb = 26.38 in
894 mb = 26.35 in
893 mb = 26.32 in
892 mb = 26.29 in
891 mb = 26.26 in
890 mb = 26.23 in
889 mb = 26.20 in
888 mb = 26.17 in |
|
