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Bulletin issued at 00:02 HKT 23/Mar/2019

At midnight at the Hong Kong Observatory the air temperature was 25 degrees Celsius and the relative humidity 89 per cent.

The air temperatures at other places were:

King's Park 25 degrees;
Wong Chuk Hang 24 degrees;
Ta Kwu Ling 23 degrees;
Lau Fau Shan 25 degrees;
Tai Po 22 degrees;
Sha Tin 24 degrees;
Tuen Mun 25 degrees;
Tseung Kwan O 23 degrees;
Sai Kung 22 degrees;
Cheung Chau 23 degrees;
Chek Lap Kok 26 degrees;
Tsing Yi 25 degrees;
Shek Kong 25 degrees;
Tsuen Wan Ho Koon 24 degrees;
Tsuen Wan Shing Mun Valley 25 degrees;
Hong Kong Park 25 degrees;
Shau Kei Wan 23 degrees;
Kowloon City 24 degrees;
Happy Valley 25 degrees;
Wong Tai Sin 24 degrees;
Stanley 24 degrees;
Kwun Tong 23 degrees;
Sham Shui Po 25 degrees;
Kai Tak Runway Park 23 degrees;
Yuen Long Park 25 degrees;
Tai Mei Tuk 22 degrees.

Between 10:45 and 11:45 p.m., the rainfall recorded in various regions were:

Sai Kung 0 to 5 mm.


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


Climatological Information for 23 Mar

Regional Weather in Hong Kong

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Hong Kong Climatology


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Local Weather Forecast

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

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Bulletin updated at 00:00 HKT 23/Mar/2019

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

A maritime airstream affected the coast of Guangdong yesterday morning. Locally, it was mainly cloudy with one or two showers. There was coastal fog in the morning. Visibility at Waglan Island fell below 1000 metres. Besides, a cold front moved across inland Guangdong and the eastern coast during the day, and brought appreciably cooler and rainy weather to the region. The cold front arrived on the vicinity of the Pearl River Estuary last night. The associated northeast monsoon is expected to bring appreciably cooler weather to southern China during the weekend.

Weather forecast for Hong Kong (Saturday, 23 Mar 2019)

Cloudy with a few rain patches. Moderate to fresh east to northeasterly winds. Rain will be more frequent with isolated thunderstorms at first. Winds will strengthen gradually later. It will be appreciably cooler with temperatures falling gradually from about 25 degrees at first to around 18 degrees at night.

Outlook : Still a few rain patches on Sunday with windy and cooler weather. Temperatures rising gradually early to midweek next week.


(The above forecast period is valid up to 23:59 HKT today, 23/03/2019; Regular update at : around 45 minutes past each hour, 16:15 HKT and 23:15 HKT)

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MARINE FORECAST
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Marine Forecast

Weather Information for the Marine Community

Bulletin issued at 21:00 HKT 22/Mar/2019

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

GENERAL SITUATION AT 220900 UTC:
COLD FRONT 23N 108E 23N 115E 22N 117E 23N 125E S 5KT.

MARINE FORECAST FOR 24 HOURS FROM 221300 UTC:

HONG KONG= S 3-4, BEC E TO NE 6-7. A FEW SHOWERS AND TS. SEA BEC 3-4 M. SWELL NE UP TO 2 M LATER. TEMP 26-19 C. =
KWANGTUNG= E TO NE 6-7, OCNL 8, S 4-5 IN W AT FIRST. ISOL SHOWERS AND TS. SEA UP TO 6 M, 2 M IN W AT FIRST. SWELL NE 2 M. =
TAIWAN STRAIT= NE 7-8. ISOL SHOWERS AND TS. SEA 4-6 M. SWELL NE 2-3 M. =
BASHI= E TO NE 5-6, BEC 7-8. ISOL SHOWERS. SEA 2-3 M, BEC 4-6 M. SWELL E TO NE 2 M, 3 M LATER. =
PRATAS= E TO NE 6-7, OCNL 8. ISOL SHOWERS. SEA UP TO 6 M. SWELL E TO NE 2-3 M. =
BALINTANG= E TO NE 5-6, 7-8 LATER. FINE. SEA 2-3 M, 4-6 M LATER. SWELL E TO NE 2 M, 3 M LATER. =
SCARBOROUGH= NE 4-5, 6-7 LATER. FINE. SEA 2 M, 3-4 M LATER. SWELL NE 2 M. =
PARACEL= S TO SE 4-5, E UP TO 6 LATER. ISOL SHOWERS AND TS. DOWN TO 500 M IN FOG PATCHES AT FIRST. SEA 2 M, UP TO 3 M LATER. SWELL E TO NE 2 M. =
TONKIN= E TO SE 4-5, BEC N TO NE 6. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA 2 M, BEC 3 M. =
DANANG= S TO SE 4-5, E 4-5 LATER. DOWN TO 500 M IN FOG OR RAIN PATCHES. SEA UP TO 2 M. SWELL E TO NE UP TO 2 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.


  • Map showing the 10 forecast areas
  • Tidal Information

    • 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 23:30 HKT 22/Mar/2019

    Weather information for south China coastal waters issued by the Hong Kong Observatory at 11:30 p.m. on 22 March 2019

    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 cold front is crossing the vicinity of the Pearl River Estuary. The associated northeast monsoon is bringing rainy weather to south China coastal waters.

    Area forecasts for the next 24 hours

    Hong Kong Adjacent Waters:
    East to northeast force 6, occasionally force 7.
    A few showers and thunderstorms.
    Rough seas.

    Nan'ao:
    East to northeast force 7 to 8.
    Isolated showers and thunderstorms.
    Rough to very rough seas.

    Shanwei:
    East to northeast force 6 to 7, occasionally force 8.
    Isolated showers and thunderstorms.
    Rough to very rough seas.

    South of Hong Kong:
    East to northeast force 6 to 7.
    Isolated showers and thunderstorms.
    Rough seas.

    Shangchuan Dao:
    South force 4 to 5, becoming east to northeast force 6 to 7.
    Isolated showers and thunderstorms.
    Moderate seas, becoming rough.

    Outlook for the next 48 hours
    East to northeasterly winds of force 6 to 7, occasionally force 8. Isolated showers and thunderstorms.

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

    Waglan Island Wind east-southeast force 3
      Visibility 5000 Metres

    Shantou Wind east-northeast force 2
      Visibility 24 Kilometres

    Huangmaozhou Wind southeast force 3

    Macau Wind south force 3
      Visibility 6 Kilometres

    Xisha Wind south-southeast force 1
      Visibility 23 Kilometres

  • Explanation of Seas or Sea Waves
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  • Descriptive Terms of Wind Speeds
  • Visibility Readings in Hong Kong Waters
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    • WEATHER FORECAST FOR LOCAL AVIATION
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    Weather Forecast for Local Aviation

    Bulletin issued at 17:30 HKT 22/MAR/2019
    (Next update at 01:30 HKT 23/MAR/2019)
    I.   SIGNIFICANT WEATHER WITHIN 100 KILOMETER RADIUS OF H.K :
     STRONG WINDS AND SEV TURB. ISOL CUNIM/TS AND
     ASSOCIATED HAZARDS.
II.  SYNOPSIS OF THE WEATHER SITUATION :
     A SOUTHERLY AIRSTREAM IS AFFECTING THE SOUTH
     CHINA COASTAL AREAS. BESIDES, A COLD FRONT OVER
     INLAND AND THE EASTERN PARTS OF GUANGDONG IS
     EXPECTED TO MOVE ACROSS THE PEARL RIVER ESTUARY
     TONIGHT.
     
III. FORECAST FOR 100-KILOMETER RADIUS AROUND HONG KONG
     FROM 1800 TO 0400 HKT:
             WIND                           TEMPERATURE (DEG. C)
   A.   SURFACE:  170/5-10
                  BECMG 040/15-20
       OFFSHORE:  170/10
                  BECMG 060/20-25                      27-20
   B.   2000 FT:  220/15-20                            19
   C.   5000 FT:  210/20                               16
   D.  10000 FT:  220/20                               8
   E.  18000 FT:  250/35                               MS3
   F.  24000 FT:  260/50                               MS16
   G.  30000 FT:  250/60                               MS25
   H. INVERSION LEVEL(S) (ONLY WHEN BELOW 5000 FEET) : 
      NIL
   I. WEATHER       : 
      MAINLY CLOUDY WITH ISOLATED SHOWERS AND
      THUNDERSTORMS. LOCALISED MIST AT NIGHT.
   J. CLOUD (HEIGHT ABOVE MSL) : 
      FEW 1200 FT SCT 2500 FT. TEMPO FEW CB 1000 FT
      SCT 2000 FT BKN 4000 FT
   K. VISIBILITY    : 7 KM. TEMPO 3500 M IN MIST/SHOWERS. TEMPO 2500 M IN TS
   L. 0 DEG. C LEVEL: 17000 FT      10 DEG. C LEVEL(S) : 9200 FT
   M. TURBULENCE    : MOD TO SEV NEAR CUNIM/TS AND OFFSHORE. MOD NEAR HILLS
   N. SEA STATE     : 1.0-2.0 M     SEA TEMPERATURE    : 21 DEG
IV.  FURTHER OUTLOOK: 
     MODERATE TO FRESH NORTHEASTERLIES, OCCASIONALLY
     STRONG OFFSHORE. CLOUDY WITH SHOWERS.=

    ===================================================================
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.

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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.

    There is no Significant Weather Information (SIGMET)

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    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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    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/Mar/2019 
    HKO Readings & Radiation Level

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

Hong Kong Observatory
Maximum Air Temperature                     27.5 C
Minimum Air Temperature                     24.8 C
Grass Minimum Temperature                   22.6 C
Relative Humidity                        79 - 89 Percent
Rainfall                                      Trace 
Total rainfall since 1st January           240.7 mm
Against an average of                      124.1 mm

Other Stations                Min                  Max
King's Park                  24.1 C               27.5 C
Wong Chuk Hang               23.7 C               26.3 C
Ta Kwu Ling                  22.4 C               28.4 C
Lau Fau Shan                 23.1 C               28.0 C
Tai Po                       21.9 C               28.0 C
Sha Tin                      23.3 C               28.2 C
Tuen Mun                     23.3 C               27.0 C
Tseung Kwan O                22.5 C               27.3 C
Sai Kung                     22.2 C               25.6 C
Cheung Chau                  22.6 C               26.9 C
Chek Lap Kok                 23.6 C               27.9 C
Tsing Yi                     23.8 C               27.2 C
Shek Kong                    22.8 C               28.9 C
Tsuen Wan Ho Koon            23.3 C               25.5 C
Tsuen Wan Shing Mun Valley   23.7 C               26.6 C
Hong Kong Park               24.5 C               27.1 C
Shau Kei Wan                 22.4 C               27.2 C
Kowloon City                 23.8 C               27.5 C
Happy Valley                 24.8 C               27.7 C
Wong Tai Sin                 23.9 C               27.8 C
Stanley                      23.1 C               27.2 C
Kwun Tong                    22.8 C               27.6 C
Sham Shui Po                 24.0 C               27.8 C
Kai Tak Runway Park          23.4 C               26.6 C
Yuen Long Park               22.7 C               28.5 C
Tai Mei Tuk               21.7 C               28.1 C

Duration of sunshine (King's Park):              0.9 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.
 

Yesterday's (22 Mar 2019) average ambient gamma radiation
dose rate taken outdoors in Hong Kong ranged from 0.08 to
0.14 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                           0.09
Tap Mun                             0.08
Kat O                               0.10
Yuen Ng Fan                         0.12
Tai Mei Tuk                         0.11
Sha Tau Kok                         0.10
Kwun Tong                           0.12
Sai Wan Ho                          0.09
King's Park                         0.14
Tsim Bei Tsui                       0.13
Cape D'Aguilar                      0.13
Chek Lap Kok                        0.14

Note

      

    1. From readings taken at various locations in Hong Kong in the
past, the hourly mean ambient gamma radiation dose rate may
vary between 0.06 and 0.3 microsievert per hour. (1
microsievert = 0.000001 sievert = 0.001 millisievert)

    2. Temporal variations are generally caused by changes in
meteorological conditions such as rainfall, wind and
barometric pressure.

    3. Spatial variations are generally caused by differences in
the radioactive content of local rock and soil.

    4. The data displayed is provisional. Only limited data
validation has been carried out.
    Climatological Information for 22 Mar
     2003copy right image | Important notices | Privacy policy Last revision date: <23 Mar 2019> 

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