கேள்வி: போஃபார்ட்டு காற்றுவீச்சு அளவீடு - நவீன அளவீடு குறித்து விரிவாக சொல்லுங்கள்.
பதில்: {| class="wikitable" border=1 ! போஃபோர்ட்டு எண்Beaufort number !! விளக்கம் !! காற்றுவீச்சின் விரைவு !! அலை உயரம் !! width="130" | கடலின் நிலை !! width="120"|நிலத்தின் நிலை !! கடல்நிலை ஒளிப்படம் !! எச்சரிக்கைக் கொடி |- ! style="background-color: #FFFFFF; font-size: large;" rowspan=4 id="Beaufort_Number_9" | 0 |rowspan=4| அமைதி || moderate gale,near gale || 50–61&nbsp;km/h||rowspan=2| 4–5.5 m ||rowspan=4| Sea heaps up. Some foam from breaking waves is blown into streaks along wind direction. Moderate amounts of airborne spray. ||rowspan=4| Whole trees in motion. Effort needed to walk against the wind.||rowspan=4| File:beaufort scale 7.jpg ||rowspan=4| File:Gale pennant.svg |- | 32–38&nbsp;mph |- | 28–33 knots ||rowspan=2| 13–19&nbsp;ft |- | 13.9–17.1&nbsp;m/s |- ! style="background-color: #FFCC00; font-size: large;" rowspan=4 id="Beaufort_Number_8" | 8 |rowspan=4| Gale,fresh gale || 62–74&nbsp;km/h ||rowspan=2| 5.5–7.5 m ||rowspan=4| Moderately high waves with breaking crests forming spindrift. Well-marked streaks of foam are blown along wind direction. Considerable airborne spray. ||rowspan=4| Some twigs broken from trees. Cars veer on road. Progress on foot is seriously impeded. ||rowspan=4| File:beaufort scale 8.jpg ||rowspan=4| File:Gale pennant.svgFile:Gale pennant.svg |- | 39–46&nbsp;mph |- | 34–40 knots ||rowspan=2| 18–25&nbsp;ft |- | 17.2–20.7&nbsp;m/s |- ! style="background-color: #FF9900; font-size: large;" rowspan=4 id="Beaufort_Number_9" | 9 |rowspan=4| Strong/severe gale || 75–88&nbsp;km/h ||rowspan=2| 7–10 m ||rowspan=4| High waves whose crests sometimes roll over. Dense foam is blown along wind direction. Large amounts of airborne spray may begin to reduce visibility. ||rowspan=4| Some branches break off trees, and some small trees blow over. Construction/temporary signs and barricades blow over. ||rowspan=4| File:beaufort scale 9.jpg ||rowspan=4| File:Gale pennant.svgFile:Gale pennant.svg |- | 47–54&nbsp;mph |- | 41–47 knots ||rowspan=2| 23–32&nbsp;ft |- | 20.8–24.4&nbsp;m/s |- |+ ! style="background-color: #FF6600; font-size: large;" rowspan=4 id="Beaufort_Number_10" | 10 |rowspan=4| Storm,The names "storm" and "hurricane" on the Beaufort scale refer only to wind strength, and do not necessarily mean that other severe weather (for instance, a இடியுடன் கூடிய மழை or வெப்ப மண்டலச் சூறாவளி) is present. To avoid confusion, strong wind warnings will often speak of e.g. "hurricane-force winds".whole gale || 89–102&nbsp;km/h ||rowspan=2| 9–12.5 m ||rowspan=4| Very high waves with overhanging crests. Large patches of foam from wave crests give the sea a white appearance. Considerable tumbling of waves with heavy impact. Large amounts of airborne spray reduce visibility. ||rowspan=4| Trees are broken off or uprooted, structural damage likely. ||rowspan=4| File:beaufort scale 10.jpg ||rowspan=4| File:Storm warning.svg |- | 55–63&nbsp;mph |- | 48–55 knots ||rowspan=2| 29–41&nbsp;ft |- | 24.5–28.4&nbsp;m/s |- ! style="background-color: #FF3300; font-size: large;" rowspan=4 id="Beaufort_Number_11" | 11 |rowspan=4| Violent storm || 103–117&nbsp;km/h ||rowspan=2| 11.5–16 m ||rowspan=4| Exceptionally high waves. Very large patches of foam, driven before the wind, cover much of the sea surface. Very large amounts of airborne spray severely reduce visibility. ||rowspan=4| Widespread vegetation and structural damage likely.||rowspan=4| File:beaufort scale 11.jpg ||rowspan=4| File:Storm warning.svg |- | 64–72&nbsp;mph |- | 56–63 knots ||rowspan=2| 37–52&nbsp;ft |- | 28.5–32.6&nbsp;m/s |- |+ ! style="background-color: #FF0000; font-size: large;" rowspan=4 id="Beaufort_Number_12" | 12 |rowspan=4| வெப்ப மண்டலச் சூறாவளி force || ≥ 118&nbsp;km/h ||rowspan=2| ≥ 14 m ||rowspan=4| Huge waves. Sea is completely white with foam and spray. Air is filled with driving spray, greatly reducing visibility. ||rowspan=4| Severe widespread damage to vegetation and structures. Debris and unsecured objects are hurled about. ||rowspan=4| File:beaufort scale 12.jpg ||rowspan=4| File:Storm warning.svgFile:Storm warning.svg |- | ≥ 73&nbsp;mph |- | ≥ 64 knots ||rowspan=2| ≥ 46&nbsp;ft |- | ≥ 32.7&nbsp;m/s |- ! colspan="8" | References: Met Office, Royal Meteorological Society, ''Encyclopædia Britannica'' |}