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

Local Weather Forecast | Regional Temperature Forecast in HK
9-day Weather Forecast | UV Index Forecast
Weather Information for South China Coastal Waters

Bulletin issued at 09:02 HKT 23/Nov/2017

At 9 a.m. at the Hong Kong Observatory the air temperature was 16 degrees Celsius and the relative humidity 67 per cent.
During the past hour the mean UV Index recorded at King's Park was 1. The intensity of UV radiation was low.

The air temperatures at other places were:

King's Park 16 degrees;
Wong Chuk Hang 18 degrees;
Ta Kwu Ling 15 degrees;
Lau Fau Shan 15 degrees;
Tai Po 16 degrees;
Sha Tin 16 degrees;
Tuen Mun 17 degrees;
Tseung Kwan O 18 degrees;
Sai Kung 16 degrees;
Cheung Chau 16 degrees;
Chek Lap Kok 17 degrees;
Tsing Yi 16 degrees;
Shek Kong 16 degrees;
Tsuen Wan Ho Koon 14 degrees;
Tsuen Wan Shing Mun Valley 16 degrees;
Hong Kong Park 17 degrees;
Shau Kei Wan 19 degrees;
Kowloon City 17 degrees;
Happy Valley 18 degrees;
Wong Tai Sin 16 degrees;
Stanley 18 degrees;
Kwun Tong 18 degrees;
Sham Shui Po 18 degrees;
Kai Tak Runway Park 17 degrees;
Yuen Long Park 17 degrees;
Tai Mei Tuk 17 degrees.

Between midnight and 9 a.m. the minimum temperature was 15.5 degrees Celsius at the Hong Kong Observatory.


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


Climatological Information for 23 Nov


Local Weather Forecast
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Local Weather Forecast

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

Current Weather | Regional Temperature Forecast in HK |  9-day Weather Forecast
UV Index Forecast |  Weather Information for South China Coastal Waters

Bulletin updated at 08:45 HKT 23/Nov/2017

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

The northeast monsoon is bringing cool weather to the south China coast. Locally, the minimum temperature recorded at the Observatory this morning was 15.5 degrees, the lowest so far this autumn.

Weather forecast for today

Dry and mainly fine. Cool in the morning and at night. The maximum temperature will be about 21 degrees. Moderate to fresh northerly winds, occasionally strong offshore.

Outlook : Becoming cloudy in the next couple of days, cool in the morning and at night.


(The above forecast period is valid up to 23:59 HKT today, 23/11/2017; 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 09:00 HKT 23/Nov/2017

GALE WARNING AREAS: HONG KONG, KWANGTUNG, TAIWAN STRAIT, BASHI, PRATAS, BALINTANG, SCARBOROUGH, PARACEL, TONKIN AND DANANG.

GENERAL SITUATION AT 222100 UTC:
AN INTENSE NORTHEAST MONSOON IS AFFECTING THE FORECAST AREAS.

MARINE FORECAST FOR 24 HOURS FROM 230100 UTC:

HONG KONG= N 6-7, OCNL 8. FINE. SEA UP TO 6 M. SWELL N TO NE 2 M, 3 M LATER. TEMP 21-16 C. =
KWANGTUNG= N 7-8. FINE. SEA 4-6 M. SWELL N TO NE 2-3 M. =
TAIWAN STRAIT= N 8, OCNL 9. FINE. SEA UP TO 8 M. SWELL N 3 M. =
BASHI= N 8. ISOL SHOWERS AND TS. SEA 6 M. SWELL N 3 M. =
PRATAS= N 8. FINE. SEA 6 M. SWELL N 3 M. =
BALINTANG= N 8. ISOL SHOWERS AND TS. SEA 6 M. SWELL N TO NE 3 M. =
SCARBOROUGH= N TO NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL N TO NE 3-4 M. =
PARACEL= N TO NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL N TO NE 2-3 M. =
TONKIN= N 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL N 2-3 M. =
DANANG= N 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL N 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

Current Weather | Local Weather Forecast | Regional Temperature Forecast in HK
9-day Weather Forecast | UV Index Forecast | Weather Information for Fishermen

Bulletin issued at 09:30 HKT 23/Nov/2017

Weather information for south China coastal waters issued by the Hong Kong Observatory at 9:30 a.m. on 23 November 2017

Warnings:
Gale force winds in all areas.

Weather Situation:
An intense northeast monsoon is affecting the south China coastal waters.

Area forecasts for the next 24 hours

Hong Kong Adjacent Waters:
North force 6 to 7, occasionally force 8.
Rough to very rough seas.

Nan'ao, Shanwei, South of Hong Kong and Shangchuan Dao:
North force 7 to 8.
Rough to very 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 5
  Visibility 14 Kilometres

Huangmaozhou Wind north-northeast force 5

Macau Wind north force 4
  Visibility 9 Kilometres

Xisha Wind northeast force 3
  Visibility 11 Kilometres in showers


WEATHER FORECAST FOR LOCAL AVIATION
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Weather Forecast for Local Aviation

Bulletin issued at 09:30 HKT 23/NOV/2017
(Next update at 17:30 HKT 23/NOV/2017)
I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     AN INTENSE NORTHEAST MONSOON IS AFFECTING THE
     SOUTH CHINA COASTAL AREAS.
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1000 TO 2000 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  360/10-15
       OFFSHORE:  360/25-30                            17-21
   B.   2000 FT:  030/20-25                            13
   C.   5000 FT:  20/10                                12
   D.  10000 FT:  240/15                               7
   E.  18000 FT:  250/30                               MS6
   F.  24000 FT:  250/40                               MS16
   G.  30000 FT:  260/45                               MS31
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      4200-4800 FT
   I. WEATHER       : 
      MAINLY FINE.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 3000 FT.
   K. VISIBILITY    : 10 KM.
   L. 0 DEG. C LEVEL: 14000,16000 FT10 DEG. C LEVEL(S) : 7800 FT
   M. TURBULENCE    : MOD TO SEV OFFSHORE AND NEAR HILLS.
   N. SEA STATE     : 3.5-5.0 M     SEA TEMPERATURE    : 24 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHERLY WINDS, STRONG
     OFFSHORE. MAINLY FINE.=
===================================================================
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 23/Nov/2017
HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     22.9 C
Minimum Air Temperature                     17.3 C
Grass Minimum Temperature                   17.2 C
Relative Humidity                        63 - 76 Percent
Rainfall                                       0 mm 
Total rainfall since 1st January          2571.8 mm
Against an average of                     2364.9 mm

Other Stations                Min                  Max
King's Park                  16.7 C               23.4 C
Wong Chuk Hang               17.9 C               24.8 C
Ta Kwu Ling                  15.3 C               22.2 C
Lau Fau Shan                 15.7 C               20.8 C
Tai Po                       16.2 C               21.6 C
Sha Tin                      16.8 C               23.0 C
Tuen Mun                     16.5 C               22.6 C
Tseung Kwan O                16.1 C               25.0 C
Sai Kung                     16.3 C               22.2 C
Cheung Chau                  16.2 C               23.5 C
Chek Lap Kok                 17.1 C               22.1 C
Tsing Yi                     17.3 C               23.5 C
Shek Kong                    15.9 C               23.5 C
Tsuen Wan Ho Koon            15.2 C               21.4 C
Tsuen Wan Shing Mun Valley   16.8 C               25.8 C
Hong Kong Park               17.7 C               23.8 C
Shau Kei Wan                 16.9 C               23.4 C
Kowloon City                 16.3 C               24.3 C
Happy Valley                 17.7 C               24.7 C
Wong Tai Sin                 16.5 C               23.5 C
Stanley                      18.0 C               24.9 C
Kwun Tong                    16.3 C               24.5 C
Sham Shui Po                 17.6 C               24.3 C
Kai Tak Runway Park          17.2 C               24.2 C
Yuen Long Park               15.8 C               23.1 C
Tai Mei Tuk               15.8 C               24.0 C

Duration of sunshine (King's Park):              9.0 H
The mean UV index recorded at King's Park yesterday was 3,
the UV intensity was Moderate.
The maximum UV index for yesterday was 6.
Sea surface temperature (Waglan Island):        22.6 C 

Yesterday's (22 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                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.10
King's Park                         0.15
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.14
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 22 Nov
Last revision date: <23 Nov 2017> 

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