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No. 09 Increasing Gale or Storm Signal

Signal No. 9's icon as shown on media and NMBILN's official documents when the signal is in force.

Signal No. 9 Increasing Gale or Storm (Traditional Chinese: 九號烈風或暴風增強信號), colloquially as Signal No. 9 (Traditional Chinese: 九號風球), is a tropical cyclone warning signal issued by National Meteorology Bureau of the Imaginary Lands of Nicholas (NMBILN). It is the second lowest stage of all tropical cyclone warning signals, the next higher one is Signal No. 10 Hurricane, the next lower one is Signal No. 8 Gale or Storm. It has only been issued 3 times since 2012.

When the light system was still in place, Signal No. 9 was indicated by a series of flashing lights at the top of the lighthouse in a harbour. The sequence of the lights are "Green", "Green", "Green".

When a severe tropical storm or a weak typhoon makes a landfall in the warning area, this signal is typically issued.

MeaningEdit

The official meaning of Signal No. 9 Increasing Gale of Storm is that "there has been storm winds (88 - 117 km/h) blowing in the area, and is expected to persist and/or to strengthen". Gales may exceed hurricane strength (118 km/h) frequently, occasionally exceeding 200 km/h.

Signal No. 9 is not always issued even if storm winds are occurring in the area, as signal no. 8's definition includes storm winds as well. It is critical that the gale winds are increasing (strengthening) to warrant a signal no. 9.

Signal No. 9 is often seen as a precursor to the highest tropical cyclone signal, Signal No. 10 Hurricane.

For this signal to be in force, a majority of the anemometer stations must record a 10-minute sustained wind speed over 88 km/h, and the wind speeds have an overall trend of increasing. Each anemometer station is assigned a weighting when factoring the wind speed, this weighting is dependent on the local population. If the weighting is over half of that area's population for the stations recording over 88 km/h of wind speed, a Signal No. 9 may also be warranted. Likewise, if the majority recorded over 117 km/h (hurricane winds), then the signal would be "upgraded" to Signal No. 10 Hurricane; the signal would be "downgraded" to Signal No. 8 Gale or Storm if the majority is recording winds less than 88 km/h, and/or the winds are no longer increasing in strength.

Precautions and ImpactsEdit

According to the Cyclone Safety Act, when a Signal No. 9 is in force, the precaution measurements largely follow that of Signal No. 8:

  • All classes from all educational institutes are cancelled.
  • All firms providing non-essential services are to be closed.
  • Television broadcasting companies / radio channels are required to reserve at least one channel in the area to continuously air the newest updates of the storm. (Signal No. 9 only)
  • Only government public services and other certified businesses can remain open.
  • Ferry services are suspended.
  • Boats are securely berthed at typhoon shelters.
  • All public transport services, excluding underground metro sections and selected bus routes, are suspended.
  • Bridges are closed.
  • Roads remained open, but travelling is strongly not recommended.
  • Taxis may provide limited service, at driver's own discretion.
  • Seaports are closed.
  • Trading is suspended in stock exchanges.
  • Airports remain opened, but most flights are likely to be cancelled or delayed.

ExtremesEdit

Issued History since 2012Edit

Tropical Cyclone Issued Time Cancelled Time Duration Replacing Replaced with
2012
Severe Typhoon Kay-Dooblurvay
(強颱風吉古拉斯)
12 Jun 16:27 13 Jun 17:18 1 day, 51 mins No. 8 Southeast Gale or Storm Signal.png Signal No. 8 Southeast Gale or Storm No. 8 Northeast Gale or Storm Signal.png Signal No. 8 Northeast Gale or Storm
Super Typhoon Eigen
(超強颱風艾格)
08 Aug 20:28 09 Aug 01:45 5 hrs, 17 mins No. 8 Southeast Gale or Storm Signal.png Signal No. 8 Southeast Gale or Storm No. 8 Southwest Gale or Storm Signal.png Signal No. 8 Southwest Gale or Storm
2016
Super Typhoon Eason
(超強颱風醫神)
20 Oct 22:25 21 Oct 08:05 9 hrs, 40 mins No. 8 Northeast Gale or Storm Signal.png Signal No. 8 Northeast Gale or Storm No. 8 Southwest Gale or Storm Signal.png Signal No. 8 Southwest Gale or Storm


National Meteorology Bureau of the Imaginary Lands of Nicholas Weather warnings and signals

Tropical cyclone warning signal

No. 01 Standby Signal.png Signal No. 1 StandbyNo. 03 Strong Wind Signal.png Signal No. 3 Strong WindsNo. 8 Northeast Gale or Storm Signal.pngNo. 8 Southeast Gale or Storm Signal.pngNo. 8 Northwest Gale or Storm Signal.pngNo. 8 Southwest Gale or Storm Signal.png Signal No. 8 Gale or Storm
No. 09 Increasing Gale or Storm Signal.png Signal No. 9 Increasing Gale or StormNo. 10 Hurricane Signal.png Signal No. 10 Hurricane

Storm Surge

Amber Storm SurgeRed Storm SurgeBlack Storm Surge

Rainfall

Amber RainstormRed RainstormBlack RainstormRainfall WatchRainfall Warning
Landslip WarningLow Lying Areas Flooding Advisory

Snowfall and Winter Storms

Snowfall WatchSnowfall Warning • Snowsqualls (AmberRedBlack)
Blizzard WarningBlowing Snow WarningFreezing Rain WarningWinter Storm WatchWinter Storm Warning

Temperature

Humidex AdvisoryVery Hot (> 33°C)
Arctic Outflow WarningFlash Freeze WarningFrost WarningVery Cold (< - 12°C) • Wind Chill Warning

Severe Thunderstorm

Severe Thunderstorm WatchSevere Thunderstorm WarningTornado WatchTornado Warning

Fire Danger

Amber Fire DangerRed Fire Danger

Winds

Strong Monsoon SignalWind Warning

Other

Dust Storm WarningFog AdvisorySmog AdvisorySpecial Weather StatementTsunami Warning

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