Weather Tips

 
Wind Chill Table:

Last newsletter we wrote about figuring out wind speeds in nature. This week we are adding a wind chill table to help you play safe in the great outdoors.

 
Actual Temp.

Calm

5 MPH

10 MPH

15 MPH

20 MPH

25 MPH

30 MPH

35 MPH

40 MPH

+50

50

48

40

36

32

30

28

27

26

+40

40

37

28

22

18

16

13

11

10

+30

30

27

16

9

4

0

-2

-4

-6

+20

20

16

4

-5

-10

-15

-18

-20

-21

+10

10

6

-9

-18

-25

-29

-33

-35

-37

0

0

-5

-21

-36

-39

-44

-48

-49

-53

-10

-10

-15

-33

-45

-53

-59

-63

-67

-69

-20

-20

-26

-46

-58

-67

-74

-79

-82

-85

-30

-30

-36

-58

-72

-82

-88

-94

-98

-100

-40

-40

-47

-70

-88

-96

-104

-109

-113

-116

-50

-50

-57

-85

-99

-110

-118

-125

-129

-132

Wind Scale:

During my many years as a scout leader I've found that the Wind Scale they teach the scouts in their field book is one of the best to help you determine wind chill.

Description Wind Speed MPH
Smoke or Steam Rising Up

0

Smoke or Steam Drifting

1-3

Leaves Rustle/Flag Stir

4-7

Leaves and Twigs Move

8-12

Branches move/ Flag Flaps

13-18

Small Trees Sway/ Flag Ripples

19-24

Large Branches Move/Flag Beats

25-31

Whole Tree Moves/ Flag Stands Fully Extended

32-38