RF Cafe Software
About RF Cafe
1996 - 2022
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...
All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
Try Using SEARCH
to Find What You Need.
There are 1,000s of Pages Indexed on RF Cafe !
|Beaufort Number||Wind speed||Description||Wave Height||Sea Conditions||Land Conditions|
|0||0||0||0||0-0.2||Calm||0/0||Flat||Calm, smoke rises vertically|
|1||1-3||1-6||1-3||0.3-1.5||Light Air||0.1/0.33||Ripples without crests||Wind motion visible in smoke|
|0.2/0.66||Small wavelets, crests of glassy appearance, not breaking||Wind felt on exposed skin, leaves rustle|
|0.6/2||Large wavelets, crests begin to break, scattered whitecaps||Leaves and smaller twigs in constant motion|
|1/3.3||Small waves||Dust and loose paper raised. Small branches begin to move.|
|2/6.6||Moderate (1.2 m) longer waves, some foam and spray||Smaller trees sway|
|3/9.9||Large waves with foam crests and some spray||Large branches in motion, whistling heard in overhead wires, umbrella use becomes difficult|
|4/13.1||Sea heaps up and foam begins to streak||Whole trees in motion, effort needed to walk against the wind|
|8||34-40||63-75||39-46||17.2-20.7||Gale||5.5/18||Moderately high waves with breaking crests forming spindrift, streaks of foam||Twigs broken from trees, cars veer on road|
|7/23||High waves (2.75 m) with dense foam, wave crests start to roll over, considerable spray||Light structure damage|
|10||48-55||88-102||55-63||24.5-28.4||Storm||9/29.5||Very high waves, sea surface is white with considerable tumbling, visibility reduced||Trees uprooted. Considerable structural damage|
|11.5/37.7||Exceptionally high waves||Widespread structural damage|
|12||>63||>117||>72||>32.7||Hurricane||14+/46+||Huge waves, air filled with foam and spray, sea completely white with driving spray, visibility very greatly reduced||Massive and widespread damage to structures|