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Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 06:02 HKT 22/Nov/2017

At 6 a.m. at the Hong Kong Observatory the air temperature was 19 degrees Celsius and the relative humidity 73 per cent.

The air temperatures at other places were:

King's Park 18 degrees;
Wong Chuk Hang 19 degrees;
Ta Kwu Ling 16 degrees;
Lau Fau Shan 17 degrees;
Tai Po 17 degrees;
Sha Tin 17 degrees;
Tuen Mun 17 degrees;
Tseung Kwan O 17 degrees;
Sai Kung 18 degrees;
Cheung Chau 18 degrees;
Chek Lap Kok 18 degrees;
Tsing Yi 18 degrees;
Shek Kong 17 degrees;
Tsuen Wan Ho Koon 16 degrees;
Tsuen Wan Shing Mun Valley 18 degrees;
Hong Kong Park 19 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 17 degrees;
Happy Valley 19 degrees;
Wong Tai Sin 18 degrees;
Stanley 19 degrees;
Kwun Tong 18 degrees;
Sham Shui Po 18 degrees;
Kai Tak Runway Park 19 degrees;
Yuen Long Park 17 degrees;
Tai Mei Tuk 17 degrees.


Note: The data above is provisional. Only limited data validation has been carried out.


Climatological Information for 22 Nov


Local Weather Forecast
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Local Weather Forecast

Automatic Regional Weather Forecast in Hong Kong & Pearl River Delta Region

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UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 05:45 HKT 22/Nov/2017

Here is the latest weather bulletin issued by the Hong Kong Observatory.

The northeast monsoon persists over the coast of Guangdong.

Weather forecast for today

Mainly cloudy. Sunny intervals during the day with a maximum temperature of around 22 degrees. Moderate northerly winds, fresh offshore at night.

Outlook : Mainly cloudy in the next few days. Cooler in the morning and at night.


(The above forecast period is valid up to 23:59 HKT today, 22/11/2017; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)



MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 21/Nov/2017

GALE WARNING AREAS: KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS AND BALINTANG.

GENERAL SITUATION AT 210900 UTC:
THE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 211300 UTC:

HONG KONG= N TO NE 5-6. SEA 2-3 M. SWELL NE 2 M. TEMP 18-22 C. =
KWANGTUNG= NE 6-7, 7-8 IN E LATER. RAIN PATCHES. SEA 3-4 M, UP TO 6 M IN E LATER. SWELL NE 2-3 M. =
TAIWAN STRAIT= NE 6-7, 7-8 LATER. RAIN PATCHES. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 3 M. =
BASHI= NE 6-7, 7-8 LATER. RAIN PATCHES. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 2-3 M. =
PRATAS= NE 6-7, 7-8 LATER. RAIN PATCHES. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 2-3 M. =
BALINTANG= NE 6-7, 7-8 LATER. RAIN PATCHES. SEA 3-4 M, UP TO 6 M LATER. SWELL NE 2-3 M. =
SCARBOROUGH= NE 5-6. ISOL SHOWERS AND TS. SEA 2-3 M. SWELL NE 2-3 M. =
PARACEL= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2-3 M. =
TONKIN= N TO NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2 M. =
DANANG= NE 6-7. ISOL SHOWERS AND TS. SEA 3-4 M. SWELL NE 2-3 M. =
NNNN
Abbreviations:
KT, VRB, SLW, FRQ - knot, variable, slow, frequent STNR, QSTNR, C - stationary, quasi-stationary, degrees celsius WKN, INTSF, INTST, NC - weaken, intensify, intensity, no change LGT, ISOL, SCT, OCNL - light, isolated, scattered, occasional CLD, DZ, TS - cloudy, drizzle, thunderstorm

The date and time are specified by a 6-digit number DDHHMM. DD stands for the day of month, HH represents the hour while MM indicates the minute in UTC.



SOUTH CHINA COASTAL WATERS
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South China Coastal Waters

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9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

Bulletin issued at 05:30 HKT 22/Nov/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 5:30 a.m. on 22 November 2017

Warnings:
Gale force winds in Nan'ao and Shanwei. Strong winds in Hong Kong adjacent waters, south of Hong Kong and Shangchuan Dao.

Weather Situation:
A replenishment of the northeast monsoon will reach the south China coastal waters later today.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
North to northeast force 5 to 6.
Moderate to rough seas.

Nan'ao and Shanwei:
Northeast force 6 to 7, up to force 8 later.
Rough to very rough seas.

South of Hong Kong and Shangchuan Dao:
Northeast force 6 to 7.
Rough seas.

Outlook for the next 48 hours
North to northeasterly winds of force 7 to 8.

Latest reports from south China coastal weather stations
--------------------------------------------------------

Waglan Island Wind north force 4
  Visibility 24 Kilometres

Shantou Wind north-northeast force 2
  Visibility 30 Kilometres

Dongsha Wind north-northeast force 4
  Visibility 10 Kilometres

Huangmaozhou Wind north-northwest force 4

Macau Wind north force 3
  Visibility 9 Kilometres

Xisha Wind east-northeast force 2
  Visibility 14 Kilometres


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 01:30 HKT 22/NOV/2017
(Next update at 9:00-9:30 HKT 22/NOV/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     NIL
II.  SYNOPSIS OF THE WEATHER SITUATION :
     THE NORTHEAST MONSOON IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 0200 TO 1200 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/10
       OFFSHORE:  020/15-20                            18-22
   B.   2000 FT:  050/10-15                            16
   C.   5000 FT:  250/10                               14
   D.  10000 FT:  260/20-25                            9
   E.  18000 FT:  270/25-30                            MS3
   F.  24000 FT:  280/30-35                            MS15
   G.  30000 FT:  270/40-45                            MS28
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      2600-4700 FT
   I. WEATHER       : 
      MAINLY CLOUDY. SUNNY INTERVALS DURING THE DAY.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3500 FT
   K. VISIBILITY    : 8 KM.
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 9600 FT
   M. TURBULENCE    : MOD OFFSHORE
   N. SEA STATE     : 1.5-2.5 M     SEA TEMPERATURE    : 22 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE NORTH TO NORTHEASTERLY WINDS, FRESH
     OFFSHORE. MAINLY CLOUDY. SUNNY INTERVALS DURING
     THE DAY.=
===================================================================
Note: The forecast could be updated before the next issue time 
whenever there is newly expected occurrence or non-occurrence 
of significant weather as described below which may be hazardous 
to aircraft within 100-km radius of Hong Kong:

(a) Change of the tropical cyclone category
(b) Strong, Gale, Storm, and Hurricane force winds
(c) Thunderstorm/CBs
(d) Severe gusts
(e) Severe turbulence
(f) Significant low stratus
(g) Fog or thick haze/sandstorm/duststorm 
    causing significant reduction of visibility
(h) Volcanic ash
(i) Radioactive cloud
===================================================================
Aviation Weather Observation and Forecast Information for Hong Kong International Airport
To know more about clouds, please see Commonly observed clouds in Hong Kong.


sigmet
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Significant Weather Information (SIGMET)

The Airport Meteorological Office is responsible for monitoring hazardous weather and phenomena in the atmosphere that may affect the safety of aircraft operations within a designated airspace over the northern part of the South China Sea. Weather forecasters at the Airport Meteorological Office issues SIGMET information when hazardous weather and phenomena in the atmosphere such as thunderstorms, tropical cyclones, turbulence, icing occur or are expected to occur in the airspace.

The latest significant weather information
issued by the Hong Kong Observatory at 10:00 HKT on 15 Nov 17

VHHK SIGMET Z99 VALID 150200/150210 VHHH- VHHK HONG KONG FIR THIS IS A TEST SIGMET, PLEASE DISREGARD=

Please click here for more about the SIGMET


Tropical Cyclone Warning
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Tropical Cyclone Warning

There is no tropical cyclone warning signal.

For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.


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Last revision date: <20 Nov 2017> 

TROPICAL CYCLONE WARNING FOR SHIPPING
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Tropical Cyclone Warning for Shipping

There is no tropical cyclone warning for shipping*.




*Tropical cyclone warnings for shipping are issued by the Hong Kong Observatory for tropical cyclones located within the area bounded by 105E and 125E , 10N and 30N.




For other tropical cyclone related information, please visit the World Meteorological Organization Web Site - Severe Weather Information Centre.


YESTERDAY'S WEATHER AND RADIATION LEVEL Skip to main content
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Yesterday's Weather and Radiation Level

Bulletin issued at 00:15 HKT 22/Nov/2017
HKO Readings & Radiation Level

Yesterday's Weather and Radiation Level:
------------------------------------------------------

Hong Kong Observatory
Maximum Air Temperature                     21.4 C
Minimum Air Temperature                     17.5 C
Grass Minimum Temperature                   18.8 C
Relative Humidity                        72 - 81 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2571.8 mm
Against an average of                     2364.2 mm

Other Stations                Min                  Max
King's Park                  16.8 C               21.5 C
Wong Chuk Hang               18.3 C               22.0 C
Ta Kwu Ling                  14.2 C               21.4 C
Tai Po                       14.8 C               20.6 C
Sha Tin                      15.7 C               21.3 C
Tuen Mun                     15.6 C               21.6 C
Tseung Kwan O                16.6 C               21.4 C
Sai Kung                     15.9 C               20.8 C
Cheung Chau                  16.5 C               22.0 C
Chek Lap Kok                 16.1 C               21.4 C
Tsing Yi                     17.5 C               22.1 C
Shek Kong                    15.0 C               21.7 C
Tsuen Wan Ho Koon            14.8 C               20.5 C
Tsuen Wan Shing Mun Valley   16.3 C               21.8 C
Hong Kong Park               18.0 C               21.2 C
Shau Kei Wan                 16.7 C               21.0 C
Kowloon City                 16.0 C               21.8 C
Happy Valley                 18.3 C               21.9 C
Wong Tai Sin                 15.9 C               21.7 C
Stanley                      17.5 C               21.9 C
Kwun Tong                    16.4 C               21.3 C
Sham Shui Po                 16.7 C               22.1 C
Kai Tak Runway Park          18.0 C               21.7 C
Yuen Long Park               15.0 C               21.5 C
Tai Mei Tuk               15.7 C               21.6 C

Duration of sunshine (King's Park):              0.6 H
The mean UV index recorded at King's Park yesterday was 1,
the UV intensity was Low.
The maximum UV index for yesterday was 4.
Sea surface temperature (Waglan Island):        22.8 C 

Yesterday's (21 Nov 2017) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.15 microsievert per hour.  These are within the normal
range of fluctuation of the background radiation level in
Hong Kong (see Note). The average dose rates measured at the
radiation monitoring stations over various parts of the
territory were as follows :

Station                     Yesterday's average
                            (microsievert/hour)
Ping Chau                           0.08
Tap Mun                             0.09
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.12
Sha Tau Kok                         0.11
Kwun Tong                           0.12
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.15

Note
  1. From readings taken at various locations in Hong Kong during the period 1987-2016, the background ambient gamma radiation levels may vary between 0.06 and 0.30 microsievert per hour.
  2. The extent of health effects to a person as a result of exposure to radiation is expressed by a physical quantity called equivalent dose, in unit of sievert. Protective action may be required if there is an increase in the ambient gamma dose rate above background such that the total additional dose is expected to exceed 5000 microsieverts in a relatively short period of time. For example, a dose of 5000 microsieverts may be reached when the ambient gamma dose rate is 1000 microsieverts per hour (several thousand times above background) and lasts for 5 hours.
  3. The readings of ambient gamma radiation level from instrument are expressed in unit of gray, which is numerically equal to the gamma dose expressed in sievert.
Climatological Information for 21 Nov
Last revision date: <22 Nov 2017> 

From Weather Underground