PONCA CITY, OK-WEATHER SITE
PONCA CITY, OK-WEATHER SITE


The Ponca City News
300 North 3rd street
Ponca City, Oklahoma 74601

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 BEAUFORT SCALE CHART

Beaufort Force 

Speed (mph)

 Wind Description State of Sea Effects on Land

0

Less 1

 Calm Mirror-like Smoke rises vertically

1

1-3

 Light Air Ripples look like scales; No crests of foam Smoke drift shows direction of wind, but wind vanes do not

2

4-7

 Light Breeze Small but pronounced wavelets; Crests do not break Wind vanes move; Leaves rustle; You can feel wind on the face

3

8-12

 Gentle Breeze Large Wavelets; Crests break; Glassy foam; A few whitecaps Leaves and small twigs move constantly; Small, light flags are extended

4

13-18

 Moderate Breeze Longer waves; Whitecaps Wind lifts dust and loose paper; Small branches move

5

19-24

 Fresh Breeze Moderate, long waves; Many whitecaps; Some spray Small trees with leaves begin to move

6

25-31

 Strong Breeze Some large waves; Crests of white foam; Spray Large branches move; Telegraph wires whistle; Hard to hold umbrellas

7

32-38

 Near Gale White foam from breaking waves blows in streaks with the wind Whole trees move; Resistance felt walking into wind

8

39-46

 Gale Waves high and moderately long; Crests break into spin drift, blowing foam in well marked streaks Twigs and small branches break off trees; Difficult to walk

9

47-54

 Strong Gale High waves with wave crests that tumble; Dense streaks of foam in wind; Poor visibility from spray Slight structural damage

10

55-63

 Storm Very high waves with long, curling crests; Sea surface appears white from blowing foam; Heavy tumbling of sea; Poor visibility Trees broken or uprooted; Considerable structural damage

11

64-73

 Violent Storm Waves high enough to hide small and medium sized ships; Sea covered with patches of white foam; Edges of wave crests blown into froth; Poor visibility Seldom experienced inland; Considerable structural damage

12

>74

 Hurricane Sea white with spray. Foam and spray render visibility almost non-existent Widespread damage. Very rarely experienced on land.
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